d971ae51a5
The patches to the /dev/crypto engine were commited to openssl master, and will be in the next major version (3.0). Changes: - Optimization in computing a digest in one operation, saving an ioctl - Runtime configuration options for the choice of algorithms to use - Command to dump useful information about the algorithms supported by the engine and the system. - Build the devcrypto engine as a dynamic module, like other engines. The devcrypto engine is built as a separate package by default, but options were added to allow building the engines into the main library. Signed-off-by: Eneas U de Queiroz <cote2004-github@yahoo.com> [refresh patches] Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2694 lines
86 KiB
Diff
2694 lines
86 KiB
Diff
From 37a5c14aad5051201e4bd18faf1a4b25a824cc30 Mon Sep 17 00:00:00 2001
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From: Eneas U de Queiroz <cote2004-github@yahoo.com>
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Date: Tue, 6 Nov 2018 10:57:03 -0200
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Subject: [PATCH 4/4] e_devcrypto: make the /dev/crypto engine dynamic
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Engine has been moved from crypto/engine/eng_devcrypto.c to
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engines/e_devcrypto.c.
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Signed-off-by: Eneas U de Queiroz <cote2004-github@yahoo.com>
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--- a/crypto/engine/build.info
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+++ b/crypto/engine/build.info
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@@ -6,6 +6,3 @@ SOURCE[../../libcrypto]=\
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tb_cipher.c tb_digest.c tb_pkmeth.c tb_asnmth.c tb_eckey.c \
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eng_openssl.c eng_cnf.c eng_dyn.c \
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eng_rdrand.c
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-IF[{- !$disabled{devcryptoeng} -}]
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- SOURCE[../../libcrypto]=eng_devcrypto.c
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-ENDIF
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--- a/crypto/init.c
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+++ b/crypto/init.c
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@@ -330,18 +330,6 @@ DEFINE_RUN_ONCE_STATIC(ossl_init_engine_
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engine_load_openssl_int();
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return 1;
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}
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-# ifndef OPENSSL_NO_DEVCRYPTOENG
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-static CRYPTO_ONCE engine_devcrypto = CRYPTO_ONCE_STATIC_INIT;
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-DEFINE_RUN_ONCE_STATIC(ossl_init_engine_devcrypto)
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-{
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-# ifdef OPENSSL_INIT_DEBUG
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- fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_devcrypto: "
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- "engine_load_devcrypto_int()\n");
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-# endif
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- engine_load_devcrypto_int();
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- return 1;
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-}
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-# endif
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# ifndef OPENSSL_NO_RDRAND
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static CRYPTO_ONCE engine_rdrand = CRYPTO_ONCE_STATIC_INIT;
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@@ -366,6 +354,18 @@ DEFINE_RUN_ONCE_STATIC(ossl_init_engine_
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return 1;
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}
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# ifndef OPENSSL_NO_STATIC_ENGINE
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+# ifndef OPENSSL_NO_DEVCRYPTOENG
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+static CRYPTO_ONCE engine_devcrypto = CRYPTO_ONCE_STATIC_INIT;
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+DEFINE_RUN_ONCE_STATIC(ossl_init_engine_devcrypto)
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+{
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+# ifdef OPENSSL_INIT_DEBUG
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+ fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_devcrypto: "
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+ "engine_load_devcrypto_int()\n");
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+# endif
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+ engine_load_devcrypto_int();
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+ return 1;
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+}
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+# endif
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# if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_HW_PADLOCK)
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static CRYPTO_ONCE engine_padlock = CRYPTO_ONCE_STATIC_INIT;
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DEFINE_RUN_ONCE_STATIC(ossl_init_engine_padlock)
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@@ -714,11 +714,6 @@ int OPENSSL_init_crypto(uint64_t opts, c
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if ((opts & OPENSSL_INIT_ENGINE_OPENSSL)
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&& !RUN_ONCE(&engine_openssl, ossl_init_engine_openssl))
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return 0;
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-# if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_DEVCRYPTOENG)
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- if ((opts & OPENSSL_INIT_ENGINE_CRYPTODEV)
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- && !RUN_ONCE(&engine_devcrypto, ossl_init_engine_devcrypto))
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- return 0;
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-# endif
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# ifndef OPENSSL_NO_RDRAND
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if ((opts & OPENSSL_INIT_ENGINE_RDRAND)
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&& !RUN_ONCE(&engine_rdrand, ossl_init_engine_rdrand))
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@@ -728,6 +723,11 @@ int OPENSSL_init_crypto(uint64_t opts, c
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&& !RUN_ONCE(&engine_dynamic, ossl_init_engine_dynamic))
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return 0;
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# ifndef OPENSSL_NO_STATIC_ENGINE
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+# ifndef OPENSSL_NO_DEVCRYPTOENG
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+ if ((opts & OPENSSL_INIT_ENGINE_CRYPTODEV)
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+ && !RUN_ONCE(&engine_devcrypto, ossl_init_engine_devcrypto))
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+ return 0;
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+# endif
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# if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_HW_PADLOCK)
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if ((opts & OPENSSL_INIT_ENGINE_PADLOCK)
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&& !RUN_ONCE(&engine_padlock, ossl_init_engine_padlock))
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--- a/engines/build.info
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+++ b/engines/build.info
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@@ -10,6 +10,9 @@ IF[{- !$disabled{"engine"} -}]
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IF[{- !$disabled{afalgeng} -}]
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SOURCE[../libcrypto]=e_afalg.c
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ENDIF
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+ IF[{- !$disabled{"devcryptoeng"} -}]
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+ SOURCE[../libcrypto]=e_devcrypto.c
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+ ENDIF
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ELSE
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ENGINES=padlock
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SOURCE[padlock]=e_padlock.c {- $target{padlock_asm_src} -}
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@@ -27,6 +30,12 @@ IF[{- !$disabled{"engine"} -}]
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DEPEND[afalg]=../libcrypto
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INCLUDE[afalg]= ../include
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ENDIF
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+ IF[{- !$disabled{"devcryptoeng"} -}]
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+ ENGINES=devcrypto
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+ SOURCE[devcrypto]=e_devcrypto.c
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+ DEPEND[devcrypto]=../libcrypto
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+ INCLUDE[devcrypto]=../include
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+ ENDIF
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ENGINES_NO_INST=ossltest dasync
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SOURCE[dasync]=e_dasync.c
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--- a/crypto/engine/eng_devcrypto.c
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+++ /dev/null
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@@ -1,1264 +0,0 @@
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-/*
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- * Copyright 2017-2019 The OpenSSL Project Authors. All Rights Reserved.
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- *
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- * Licensed under the OpenSSL license (the "License"). You may not use
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- * this file except in compliance with the License. You can obtain a copy
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- * in the file LICENSE in the source distribution or at
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- * https://www.openssl.org/source/license.html
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- */
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-
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-#include "e_os.h"
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-#include <string.h>
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-#include <sys/types.h>
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-#include <sys/stat.h>
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-#include <fcntl.h>
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-#include <sys/ioctl.h>
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-#include <unistd.h>
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-#include <assert.h>
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-
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-#include <openssl/conf.h>
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-#include <openssl/evp.h>
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-#include <openssl/err.h>
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-#include <openssl/engine.h>
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-#include <openssl/objects.h>
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-#include <crypto/cryptodev.h>
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-
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-#include "internal/engine.h"
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-
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-/* #define ENGINE_DEVCRYPTO_DEBUG */
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-
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-#ifdef CRYPTO_ALGORITHM_MIN
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-# define CHECK_BSD_STYLE_MACROS
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-#endif
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-
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-/*
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- * ONE global file descriptor for all sessions. This allows operations
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- * such as digest session data copying (see digest_copy()), but is also
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- * saner... why re-open /dev/crypto for every session?
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- */
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-static int cfd;
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-#define DEVCRYPTO_REQUIRE_ACCELERATED 0 /* require confirmation of acceleration */
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-#define DEVCRYPTO_USE_SOFTWARE 1 /* allow software drivers */
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-#define DEVCRYPTO_REJECT_SOFTWARE 2 /* only disallow confirmed software drivers */
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-
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-#define DEVCRYPTO_DEFAULT_USE_SOFDTRIVERS DEVCRYPTO_REJECT_SOFTWARE
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-static int use_softdrivers = DEVCRYPTO_DEFAULT_USE_SOFDTRIVERS;
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-
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-/*
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- * cipher/digest status & acceleration definitions
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- * Make sure the defaults are set to 0
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- */
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-struct driver_info_st {
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- enum devcrypto_status_t {
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- DEVCRYPTO_STATUS_FAILURE = -3, /* unusable for other reason */
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- DEVCRYPTO_STATUS_NO_CIOCCPHASH = -2, /* hash state copy not supported */
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- DEVCRYPTO_STATUS_NO_CIOCGSESSION = -1, /* session open failed */
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- DEVCRYPTO_STATUS_UNKNOWN = 0, /* not tested yet */
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- DEVCRYPTO_STATUS_USABLE = 1 /* algo can be used */
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- } status;
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-
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- enum devcrypto_accelerated_t {
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- DEVCRYPTO_NOT_ACCELERATED = -1, /* software implemented */
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- DEVCRYPTO_ACCELERATION_UNKNOWN = 0, /* acceleration support unkown */
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- DEVCRYPTO_ACCELERATED = 1 /* hardware accelerated */
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- } accelerated;
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-
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- char *driver_name;
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-};
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-
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-static int clean_devcrypto_session(struct session_op *sess) {
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- if (ioctl(cfd, CIOCFSESSION, &sess->ses) < 0) {
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- SYSerr(SYS_F_IOCTL, errno);
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- return 0;
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- }
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- memset(sess, 0, sizeof(struct session_op));
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- return 1;
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-}
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-
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-/******************************************************************************
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- *
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- * Ciphers
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- *
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- * Because they all do the same basic operation, we have only one set of
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- * method functions for them all to share, and a mapping table between
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- * NIDs and cryptodev IDs, with all the necessary size data.
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- *
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- *****/
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-
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-struct cipher_ctx {
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- struct session_op sess;
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- int op; /* COP_ENCRYPT or COP_DECRYPT */
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- unsigned long mode; /* EVP_CIPH_*_MODE */
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-
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- /* to handle ctr mode being a stream cipher */
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- unsigned char partial[EVP_MAX_BLOCK_LENGTH];
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- unsigned int blocksize, num;
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-};
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-
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-static const struct cipher_data_st {
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- int nid;
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- int blocksize;
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- int keylen;
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- int ivlen;
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- int flags;
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- int devcryptoid;
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-} cipher_data[] = {
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-#ifndef OPENSSL_NO_DES
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- { NID_des_cbc, 8, 8, 8, EVP_CIPH_CBC_MODE, CRYPTO_DES_CBC },
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- { NID_des_ede3_cbc, 8, 24, 8, EVP_CIPH_CBC_MODE, CRYPTO_3DES_CBC },
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-#endif
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-#ifndef OPENSSL_NO_BF
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- { NID_bf_cbc, 8, 16, 8, EVP_CIPH_CBC_MODE, CRYPTO_BLF_CBC },
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-#endif
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-#ifndef OPENSSL_NO_CAST
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- { NID_cast5_cbc, 8, 16, 8, EVP_CIPH_CBC_MODE, CRYPTO_CAST_CBC },
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-#endif
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- { NID_aes_128_cbc, 16, 128 / 8, 16, EVP_CIPH_CBC_MODE, CRYPTO_AES_CBC },
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- { NID_aes_192_cbc, 16, 192 / 8, 16, EVP_CIPH_CBC_MODE, CRYPTO_AES_CBC },
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- { NID_aes_256_cbc, 16, 256 / 8, 16, EVP_CIPH_CBC_MODE, CRYPTO_AES_CBC },
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-#ifndef OPENSSL_NO_RC4
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- { NID_rc4, 1, 16, 0, EVP_CIPH_STREAM_CIPHER, CRYPTO_ARC4 },
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-#endif
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-#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_AES_CTR)
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- { NID_aes_128_ctr, 16, 128 / 8, 16, EVP_CIPH_CTR_MODE, CRYPTO_AES_CTR },
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- { NID_aes_192_ctr, 16, 192 / 8, 16, EVP_CIPH_CTR_MODE, CRYPTO_AES_CTR },
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- { NID_aes_256_ctr, 16, 256 / 8, 16, EVP_CIPH_CTR_MODE, CRYPTO_AES_CTR },
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-#endif
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-#if 0 /* Not yet supported */
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- { NID_aes_128_xts, 16, 128 / 8 * 2, 16, EVP_CIPH_XTS_MODE, CRYPTO_AES_XTS },
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- { NID_aes_256_xts, 16, 256 / 8 * 2, 16, EVP_CIPH_XTS_MODE, CRYPTO_AES_XTS },
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-#endif
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-#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_AES_ECB)
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- { NID_aes_128_ecb, 16, 128 / 8, 0, EVP_CIPH_ECB_MODE, CRYPTO_AES_ECB },
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- { NID_aes_192_ecb, 16, 192 / 8, 0, EVP_CIPH_ECB_MODE, CRYPTO_AES_ECB },
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- { NID_aes_256_ecb, 16, 256 / 8, 0, EVP_CIPH_ECB_MODE, CRYPTO_AES_ECB },
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-#endif
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-#if 0 /* Not yet supported */
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- { NID_aes_128_gcm, 16, 128 / 8, 16, EVP_CIPH_GCM_MODE, CRYPTO_AES_GCM },
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- { NID_aes_192_gcm, 16, 192 / 8, 16, EVP_CIPH_GCM_MODE, CRYPTO_AES_GCM },
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- { NID_aes_256_gcm, 16, 256 / 8, 16, EVP_CIPH_GCM_MODE, CRYPTO_AES_GCM },
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-#endif
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-#ifndef OPENSSL_NO_CAMELLIA
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- { NID_camellia_128_cbc, 16, 128 / 8, 16, EVP_CIPH_CBC_MODE,
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- CRYPTO_CAMELLIA_CBC },
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- { NID_camellia_192_cbc, 16, 192 / 8, 16, EVP_CIPH_CBC_MODE,
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- CRYPTO_CAMELLIA_CBC },
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- { NID_camellia_256_cbc, 16, 256 / 8, 16, EVP_CIPH_CBC_MODE,
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- CRYPTO_CAMELLIA_CBC },
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-#endif
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-};
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-
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-static size_t find_cipher_data_index(int nid)
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-{
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- size_t i;
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-
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- for (i = 0; i < OSSL_NELEM(cipher_data); i++)
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- if (nid == cipher_data[i].nid)
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- return i;
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- return (size_t)-1;
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-}
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-
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-static size_t get_cipher_data_index(int nid)
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-{
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- size_t i = find_cipher_data_index(nid);
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-
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- if (i != (size_t)-1)
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- return i;
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-
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- /*
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- * Code further down must make sure that only NIDs in the table above
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- * are used. If any other NID reaches this function, there's a grave
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- * coding error further down.
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- */
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- assert("Code that never should be reached" == NULL);
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- return -1;
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-}
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-
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-static const struct cipher_data_st *get_cipher_data(int nid)
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-{
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- return &cipher_data[get_cipher_data_index(nid)];
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-}
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-
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-/*
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- * Following are the three necessary functions to map OpenSSL functionality
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- * with cryptodev.
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- */
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-
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-static int cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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- const unsigned char *iv, int enc)
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-{
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- struct cipher_ctx *cipher_ctx =
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- (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
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- const struct cipher_data_st *cipher_d =
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- get_cipher_data(EVP_CIPHER_CTX_nid(ctx));
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-
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- /* cleanup a previous session */
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- if (cipher_ctx->sess.ses != 0 &&
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- clean_devcrypto_session(&cipher_ctx->sess) == 0)
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- return 0;
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-
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- cipher_ctx->sess.cipher = cipher_d->devcryptoid;
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- cipher_ctx->sess.keylen = cipher_d->keylen;
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- cipher_ctx->sess.key = (void *)key;
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- cipher_ctx->op = enc ? COP_ENCRYPT : COP_DECRYPT;
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- cipher_ctx->mode = cipher_d->flags & EVP_CIPH_MODE;
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- cipher_ctx->blocksize = cipher_d->blocksize;
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- if (ioctl(cfd, CIOCGSESSION, &cipher_ctx->sess) < 0) {
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- SYSerr(SYS_F_IOCTL, errno);
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- return 0;
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- }
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-
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- return 1;
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-}
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-
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-static int cipher_do_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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- const unsigned char *in, size_t inl)
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-{
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- struct cipher_ctx *cipher_ctx =
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- (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
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- struct crypt_op cryp;
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- unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx);
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-#if !defined(COP_FLAG_WRITE_IV)
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- unsigned char saved_iv[EVP_MAX_IV_LENGTH];
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- const unsigned char *ivptr;
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- size_t nblocks, ivlen;
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-#endif
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-
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- memset(&cryp, 0, sizeof(cryp));
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- cryp.ses = cipher_ctx->sess.ses;
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- cryp.len = inl;
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- cryp.src = (void *)in;
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- cryp.dst = (void *)out;
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- cryp.iv = (void *)iv;
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- cryp.op = cipher_ctx->op;
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-#if !defined(COP_FLAG_WRITE_IV)
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- cryp.flags = 0;
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-
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- ivlen = EVP_CIPHER_CTX_iv_length(ctx);
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- if (ivlen > 0)
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- switch (cipher_ctx->mode) {
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- case EVP_CIPH_CBC_MODE:
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- assert(inl >= ivlen);
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- if (!EVP_CIPHER_CTX_encrypting(ctx)) {
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- ivptr = in + inl - ivlen;
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- memcpy(saved_iv, ivptr, ivlen);
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- }
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- break;
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-
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- case EVP_CIPH_CTR_MODE:
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- break;
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-
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- default: /* should not happen */
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- return 0;
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- }
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-#else
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- cryp.flags = COP_FLAG_WRITE_IV;
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-#endif
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-
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- if (ioctl(cfd, CIOCCRYPT, &cryp) < 0) {
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- SYSerr(SYS_F_IOCTL, errno);
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- return 0;
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- }
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-
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-#if !defined(COP_FLAG_WRITE_IV)
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- if (ivlen > 0)
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- switch (cipher_ctx->mode) {
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- case EVP_CIPH_CBC_MODE:
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- assert(inl >= ivlen);
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- if (EVP_CIPHER_CTX_encrypting(ctx))
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- ivptr = out + inl - ivlen;
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- else
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- ivptr = saved_iv;
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-
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- memcpy(iv, ivptr, ivlen);
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- break;
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-
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- case EVP_CIPH_CTR_MODE:
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- nblocks = (inl + cipher_ctx->blocksize - 1)
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- / cipher_ctx->blocksize;
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- do {
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- ivlen--;
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- nblocks += iv[ivlen];
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- iv[ivlen] = (uint8_t) nblocks;
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- nblocks >>= 8;
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- } while (ivlen);
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- break;
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-
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- default: /* should not happen */
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- return 0;
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- }
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-#endif
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-
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- return 1;
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-}
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-
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-static int ctr_do_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
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- const unsigned char *in, size_t inl)
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-{
|
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- struct cipher_ctx *cipher_ctx =
|
|
- (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
|
|
- size_t nblocks, len;
|
|
-
|
|
- /* initial partial block */
|
|
- while (cipher_ctx->num && inl) {
|
|
- (*out++) = *(in++) ^ cipher_ctx->partial[cipher_ctx->num];
|
|
- --inl;
|
|
- cipher_ctx->num = (cipher_ctx->num + 1) % cipher_ctx->blocksize;
|
|
- }
|
|
-
|
|
- /* full blocks */
|
|
- if (inl > (unsigned int) cipher_ctx->blocksize) {
|
|
- nblocks = inl/cipher_ctx->blocksize;
|
|
- len = nblocks * cipher_ctx->blocksize;
|
|
- if (cipher_do_cipher(ctx, out, in, len) < 1)
|
|
- return 0;
|
|
- inl -= len;
|
|
- out += len;
|
|
- in += len;
|
|
- }
|
|
-
|
|
- /* final partial block */
|
|
- if (inl) {
|
|
- memset(cipher_ctx->partial, 0, cipher_ctx->blocksize);
|
|
- if (cipher_do_cipher(ctx, cipher_ctx->partial, cipher_ctx->partial,
|
|
- cipher_ctx->blocksize) < 1)
|
|
- return 0;
|
|
- while (inl--) {
|
|
- out[cipher_ctx->num] = in[cipher_ctx->num]
|
|
- ^ cipher_ctx->partial[cipher_ctx->num];
|
|
- cipher_ctx->num++;
|
|
- }
|
|
- }
|
|
-
|
|
- return 1;
|
|
-}
|
|
-
|
|
-static int cipher_ctrl(EVP_CIPHER_CTX *ctx, int type, int p1, void* p2)
|
|
-{
|
|
- struct cipher_ctx *cipher_ctx =
|
|
- (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
|
|
- EVP_CIPHER_CTX *to_ctx = (EVP_CIPHER_CTX *)p2;
|
|
- struct cipher_ctx *to_cipher_ctx;
|
|
-
|
|
- switch (type) {
|
|
- case EVP_CTRL_COPY:
|
|
- if (cipher_ctx == NULL)
|
|
- return 1;
|
|
- /* when copying the context, a new session needs to be initialized */
|
|
- to_cipher_ctx =
|
|
- (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(to_ctx);
|
|
- memset(&to_cipher_ctx->sess, 0, sizeof(to_cipher_ctx->sess));
|
|
- return cipher_init(to_ctx, cipher_ctx->sess.key, EVP_CIPHER_CTX_iv(ctx),
|
|
- (cipher_ctx->op == COP_ENCRYPT));
|
|
-
|
|
- case EVP_CTRL_INIT:
|
|
- memset(&cipher_ctx->sess, 0, sizeof(cipher_ctx->sess));
|
|
- return 1;
|
|
-
|
|
- default:
|
|
- break;
|
|
- }
|
|
-
|
|
- return -1;
|
|
-}
|
|
-
|
|
-static int cipher_cleanup(EVP_CIPHER_CTX *ctx)
|
|
-{
|
|
- struct cipher_ctx *cipher_ctx =
|
|
- (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
|
|
-
|
|
- return clean_devcrypto_session(&cipher_ctx->sess);
|
|
-}
|
|
-
|
|
-/*
|
|
- * Keep tables of known nids, associated methods, selected ciphers, and driver
|
|
- * info.
|
|
- * Note that known_cipher_nids[] isn't necessarily indexed the same way as
|
|
- * cipher_data[] above, which the other tables are.
|
|
- */
|
|
-static int known_cipher_nids[OSSL_NELEM(cipher_data)];
|
|
-static int known_cipher_nids_amount = -1; /* -1 indicates not yet initialised */
|
|
-static EVP_CIPHER *known_cipher_methods[OSSL_NELEM(cipher_data)] = { NULL, };
|
|
-static int selected_ciphers[OSSL_NELEM(cipher_data)];
|
|
-static struct driver_info_st cipher_driver_info[OSSL_NELEM(cipher_data)];
|
|
-
|
|
-
|
|
-static int devcrypto_test_cipher(size_t cipher_data_index)
|
|
-{
|
|
- return (cipher_driver_info[cipher_data_index].status == DEVCRYPTO_STATUS_USABLE
|
|
- && selected_ciphers[cipher_data_index] == 1
|
|
- && (cipher_driver_info[cipher_data_index].accelerated
|
|
- == DEVCRYPTO_ACCELERATED
|
|
- || use_softdrivers == DEVCRYPTO_USE_SOFTWARE
|
|
- || (cipher_driver_info[cipher_data_index].accelerated
|
|
- != DEVCRYPTO_NOT_ACCELERATED
|
|
- && use_softdrivers == DEVCRYPTO_REJECT_SOFTWARE)));
|
|
-}
|
|
-
|
|
-static void prepare_cipher_methods(void)
|
|
-{
|
|
- size_t i;
|
|
- struct session_op sess;
|
|
- unsigned long cipher_mode;
|
|
-#ifdef CIOCGSESSINFO
|
|
- struct session_info_op siop;
|
|
-#endif
|
|
-
|
|
- memset(&cipher_driver_info, 0, sizeof(cipher_driver_info));
|
|
-
|
|
- memset(&sess, 0, sizeof(sess));
|
|
- sess.key = (void *)"01234567890123456789012345678901234567890123456789";
|
|
-
|
|
- for (i = 0, known_cipher_nids_amount = 0;
|
|
- i < OSSL_NELEM(cipher_data); i++) {
|
|
-
|
|
- selected_ciphers[i] = 1;
|
|
- /*
|
|
- * Check that the cipher is usable
|
|
- */
|
|
- sess.cipher = cipher_data[i].devcryptoid;
|
|
- sess.keylen = cipher_data[i].keylen;
|
|
- if (ioctl(cfd, CIOCGSESSION, &sess) < 0) {
|
|
- cipher_driver_info[i].status = DEVCRYPTO_STATUS_NO_CIOCGSESSION;
|
|
- continue;
|
|
- }
|
|
-
|
|
- cipher_mode = cipher_data[i].flags & EVP_CIPH_MODE;
|
|
-
|
|
- if ((known_cipher_methods[i] =
|
|
- EVP_CIPHER_meth_new(cipher_data[i].nid,
|
|
- cipher_mode == EVP_CIPH_CTR_MODE ? 1 :
|
|
- cipher_data[i].blocksize,
|
|
- cipher_data[i].keylen)) == NULL
|
|
- || !EVP_CIPHER_meth_set_iv_length(known_cipher_methods[i],
|
|
- cipher_data[i].ivlen)
|
|
- || !EVP_CIPHER_meth_set_flags(known_cipher_methods[i],
|
|
- cipher_data[i].flags
|
|
- | EVP_CIPH_CUSTOM_COPY
|
|
- | EVP_CIPH_CTRL_INIT
|
|
- | EVP_CIPH_FLAG_DEFAULT_ASN1)
|
|
- || !EVP_CIPHER_meth_set_init(known_cipher_methods[i], cipher_init)
|
|
- || !EVP_CIPHER_meth_set_do_cipher(known_cipher_methods[i],
|
|
- cipher_mode == EVP_CIPH_CTR_MODE ?
|
|
- ctr_do_cipher :
|
|
- cipher_do_cipher)
|
|
- || !EVP_CIPHER_meth_set_ctrl(known_cipher_methods[i], cipher_ctrl)
|
|
- || !EVP_CIPHER_meth_set_cleanup(known_cipher_methods[i],
|
|
- cipher_cleanup)
|
|
- || !EVP_CIPHER_meth_set_impl_ctx_size(known_cipher_methods[i],
|
|
- sizeof(struct cipher_ctx))) {
|
|
- cipher_driver_info[i].status = DEVCRYPTO_STATUS_FAILURE;
|
|
- EVP_CIPHER_meth_free(known_cipher_methods[i]);
|
|
- known_cipher_methods[i] = NULL;
|
|
- } else {
|
|
- cipher_driver_info[i].status = DEVCRYPTO_STATUS_USABLE;
|
|
-#ifdef CIOCGSESSINFO
|
|
- siop.ses = sess.ses;
|
|
- if (ioctl(cfd, CIOCGSESSINFO, &siop) < 0) {
|
|
- cipher_driver_info[i].accelerated = DEVCRYPTO_ACCELERATION_UNKNOWN;
|
|
- } else {
|
|
- cipher_driver_info[i].driver_name =
|
|
- OPENSSL_strndup(siop.cipher_info.cra_driver_name,
|
|
- CRYPTODEV_MAX_ALG_NAME);
|
|
- if (!(siop.flags & SIOP_FLAG_KERNEL_DRIVER_ONLY))
|
|
- cipher_driver_info[i].accelerated = DEVCRYPTO_NOT_ACCELERATED;
|
|
- else
|
|
- cipher_driver_info[i].accelerated = DEVCRYPTO_ACCELERATED;
|
|
- }
|
|
-#endif /* CIOCGSESSINFO */
|
|
- }
|
|
- ioctl(cfd, CIOCFSESSION, &sess.ses);
|
|
- if (devcrypto_test_cipher(i)) {
|
|
- known_cipher_nids[known_cipher_nids_amount++] =
|
|
- cipher_data[i].nid;
|
|
- }
|
|
- }
|
|
-}
|
|
-
|
|
-static void rebuild_known_cipher_nids(ENGINE *e)
|
|
-{
|
|
- size_t i;
|
|
-
|
|
- for (i = 0, known_cipher_nids_amount = 0; i < OSSL_NELEM(cipher_data); i++) {
|
|
- if (devcrypto_test_cipher(i))
|
|
- known_cipher_nids[known_cipher_nids_amount++] = cipher_data[i].nid;
|
|
- }
|
|
- ENGINE_unregister_ciphers(e);
|
|
- ENGINE_register_ciphers(e);
|
|
-}
|
|
-
|
|
-static const EVP_CIPHER *get_cipher_method(int nid)
|
|
-{
|
|
- size_t i = get_cipher_data_index(nid);
|
|
-
|
|
- if (i == (size_t)-1)
|
|
- return NULL;
|
|
- return known_cipher_methods[i];
|
|
-}
|
|
-
|
|
-static int get_cipher_nids(const int **nids)
|
|
-{
|
|
- *nids = known_cipher_nids;
|
|
- return known_cipher_nids_amount;
|
|
-}
|
|
-
|
|
-static void destroy_cipher_method(int nid)
|
|
-{
|
|
- size_t i = get_cipher_data_index(nid);
|
|
-
|
|
- EVP_CIPHER_meth_free(known_cipher_methods[i]);
|
|
- known_cipher_methods[i] = NULL;
|
|
-}
|
|
-
|
|
-static void destroy_all_cipher_methods(void)
|
|
-{
|
|
- size_t i;
|
|
-
|
|
- for (i = 0; i < OSSL_NELEM(cipher_data); i++) {
|
|
- destroy_cipher_method(cipher_data[i].nid);
|
|
- OPENSSL_free(cipher_driver_info[i].driver_name);
|
|
- cipher_driver_info[i].driver_name = NULL;
|
|
- }
|
|
-}
|
|
-
|
|
-static int devcrypto_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
|
|
- const int **nids, int nid)
|
|
-{
|
|
- if (cipher == NULL)
|
|
- return get_cipher_nids(nids);
|
|
-
|
|
- *cipher = get_cipher_method(nid);
|
|
-
|
|
- return *cipher != NULL;
|
|
-}
|
|
-
|
|
-static void devcrypto_select_all_ciphers(int *cipher_list)
|
|
-{
|
|
- size_t i;
|
|
-
|
|
- for (i = 0; i < OSSL_NELEM(cipher_data); i++)
|
|
- cipher_list[i] = 1;
|
|
-}
|
|
-
|
|
-static int cryptodev_select_cipher_cb(const char *str, int len, void *usr)
|
|
-{
|
|
- int *cipher_list = (int *)usr;
|
|
- char *name;
|
|
- const EVP_CIPHER *EVP;
|
|
- size_t i;
|
|
-
|
|
- if (len == 0)
|
|
- return 1;
|
|
- if (usr == NULL || (name = OPENSSL_strndup(str, len)) == NULL)
|
|
- return 0;
|
|
- EVP = EVP_get_cipherbyname(name);
|
|
- if (EVP == NULL)
|
|
- fprintf(stderr, "devcrypto: unknown cipher %s\n", name);
|
|
- else if ((i = find_cipher_data_index(EVP_CIPHER_nid(EVP))) != (size_t)-1)
|
|
- cipher_list[i] = 1;
|
|
- else
|
|
- fprintf(stderr, "devcrypto: cipher %s not available\n", name);
|
|
- OPENSSL_free(name);
|
|
- return 1;
|
|
-}
|
|
-
|
|
-static void dump_cipher_info(void)
|
|
-{
|
|
- size_t i;
|
|
- const char *name;
|
|
-
|
|
- fprintf (stderr, "Information about ciphers supported by the /dev/crypto"
|
|
- " engine:\n");
|
|
-#ifndef CIOCGSESSINFO
|
|
- fprintf(stderr, "CIOCGSESSINFO (session info call) unavailable\n");
|
|
-#endif
|
|
- for (i = 0; i < OSSL_NELEM(cipher_data); i++) {
|
|
- name = OBJ_nid2sn(cipher_data[i].nid);
|
|
- fprintf (stderr, "Cipher %s, NID=%d, /dev/crypto info: id=%d, ",
|
|
- name ? name : "unknown", cipher_data[i].nid,
|
|
- cipher_data[i].devcryptoid);
|
|
- if (cipher_driver_info[i].status == DEVCRYPTO_STATUS_NO_CIOCGSESSION ) {
|
|
- fprintf (stderr, "CIOCGSESSION (session open call) failed\n");
|
|
- continue;
|
|
- }
|
|
- fprintf (stderr, "driver=%s ", cipher_driver_info[i].driver_name ?
|
|
- cipher_driver_info[i].driver_name : "unknown");
|
|
- if (cipher_driver_info[i].accelerated == DEVCRYPTO_ACCELERATED)
|
|
- fprintf(stderr, "(hw accelerated)");
|
|
- else if (cipher_driver_info[i].accelerated == DEVCRYPTO_NOT_ACCELERATED)
|
|
- fprintf(stderr, "(software)");
|
|
- else
|
|
- fprintf(stderr, "(acceleration status unknown)");
|
|
- if (cipher_driver_info[i].status == DEVCRYPTO_STATUS_FAILURE)
|
|
- fprintf (stderr, ". Cipher setup failed");
|
|
- fprintf(stderr, "\n");
|
|
- }
|
|
- fprintf(stderr, "\n");
|
|
-}
|
|
-
|
|
-/*
|
|
- * We only support digests if the cryptodev implementation supports multiple
|
|
- * data updates and session copying. Otherwise, we would be forced to maintain
|
|
- * a cache, which is perilous if there's a lot of data coming in (if someone
|
|
- * wants to checksum an OpenSSL tarball, for example).
|
|
- */
|
|
-#if defined(CIOCCPHASH) && defined(COP_FLAG_UPDATE) && defined(COP_FLAG_FINAL)
|
|
-#define IMPLEMENT_DIGEST
|
|
-
|
|
-/******************************************************************************
|
|
- *
|
|
- * Digests
|
|
- *
|
|
- * Because they all do the same basic operation, we have only one set of
|
|
- * method functions for them all to share, and a mapping table between
|
|
- * NIDs and cryptodev IDs, with all the necessary size data.
|
|
- *
|
|
- *****/
|
|
-
|
|
-struct digest_ctx {
|
|
- struct session_op sess;
|
|
- /* This signals that the init function was called, not that it succeeded. */
|
|
- int init_called;
|
|
- unsigned char digest_res[HASH_MAX_LEN];
|
|
-};
|
|
-
|
|
-static const struct digest_data_st {
|
|
- int nid;
|
|
- int blocksize;
|
|
- int digestlen;
|
|
- int devcryptoid;
|
|
-} digest_data[] = {
|
|
-#ifndef OPENSSL_NO_MD5
|
|
- { NID_md5, /* MD5_CBLOCK */ 64, 16, CRYPTO_MD5 },
|
|
-#endif
|
|
- { NID_sha1, SHA_CBLOCK, 20, CRYPTO_SHA1 },
|
|
-#ifndef OPENSSL_NO_RMD160
|
|
-# if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_RIPEMD160)
|
|
- { NID_ripemd160, /* RIPEMD160_CBLOCK */ 64, 20, CRYPTO_RIPEMD160 },
|
|
-# endif
|
|
-#endif
|
|
-#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_SHA2_224)
|
|
- { NID_sha224, SHA256_CBLOCK, 224 / 8, CRYPTO_SHA2_224 },
|
|
-#endif
|
|
-#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_SHA2_256)
|
|
- { NID_sha256, SHA256_CBLOCK, 256 / 8, CRYPTO_SHA2_256 },
|
|
-#endif
|
|
-#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_SHA2_384)
|
|
- { NID_sha384, SHA512_CBLOCK, 384 / 8, CRYPTO_SHA2_384 },
|
|
-#endif
|
|
-#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_SHA2_512)
|
|
- { NID_sha512, SHA512_CBLOCK, 512 / 8, CRYPTO_SHA2_512 },
|
|
-#endif
|
|
-};
|
|
-
|
|
-static size_t find_digest_data_index(int nid)
|
|
-{
|
|
- size_t i;
|
|
-
|
|
- for (i = 0; i < OSSL_NELEM(digest_data); i++)
|
|
- if (nid == digest_data[i].nid)
|
|
- return i;
|
|
- return (size_t)-1;
|
|
-}
|
|
-
|
|
-static size_t get_digest_data_index(int nid)
|
|
-{
|
|
- size_t i = find_digest_data_index(nid);
|
|
-
|
|
- if (i != (size_t)-1)
|
|
- return i;
|
|
-
|
|
- /*
|
|
- * Code further down must make sure that only NIDs in the table above
|
|
- * are used. If any other NID reaches this function, there's a grave
|
|
- * coding error further down.
|
|
- */
|
|
- assert("Code that never should be reached" == NULL);
|
|
- return -1;
|
|
-}
|
|
-
|
|
-static const struct digest_data_st *get_digest_data(int nid)
|
|
-{
|
|
- return &digest_data[get_digest_data_index(nid)];
|
|
-}
|
|
-
|
|
-/*
|
|
- * Following are the five necessary functions to map OpenSSL functionality
|
|
- * with cryptodev: init, update, final, cleanup, and copy.
|
|
- */
|
|
-
|
|
-static int digest_init(EVP_MD_CTX *ctx)
|
|
-{
|
|
- struct digest_ctx *digest_ctx =
|
|
- (struct digest_ctx *)EVP_MD_CTX_md_data(ctx);
|
|
- const struct digest_data_st *digest_d =
|
|
- get_digest_data(EVP_MD_CTX_type(ctx));
|
|
-
|
|
- digest_ctx->init_called = 1;
|
|
-
|
|
- memset(&digest_ctx->sess, 0, sizeof(digest_ctx->sess));
|
|
- digest_ctx->sess.mac = digest_d->devcryptoid;
|
|
- if (ioctl(cfd, CIOCGSESSION, &digest_ctx->sess) < 0) {
|
|
- SYSerr(SYS_F_IOCTL, errno);
|
|
- return 0;
|
|
- }
|
|
-
|
|
- return 1;
|
|
-}
|
|
-
|
|
-static int digest_op(struct digest_ctx *ctx, const void *src, size_t srclen,
|
|
- void *res, unsigned int flags)
|
|
-{
|
|
- struct crypt_op cryp;
|
|
-
|
|
- memset(&cryp, 0, sizeof(cryp));
|
|
- cryp.ses = ctx->sess.ses;
|
|
- cryp.len = srclen;
|
|
- cryp.src = (void *)src;
|
|
- cryp.dst = NULL;
|
|
- cryp.mac = res;
|
|
- cryp.flags = flags;
|
|
- return ioctl(cfd, CIOCCRYPT, &cryp);
|
|
-}
|
|
-
|
|
-static int digest_update(EVP_MD_CTX *ctx, const void *data, size_t count)
|
|
-{
|
|
- struct digest_ctx *digest_ctx =
|
|
- (struct digest_ctx *)EVP_MD_CTX_md_data(ctx);
|
|
-
|
|
- if (count == 0)
|
|
- return 1;
|
|
-
|
|
- if (digest_ctx == NULL)
|
|
- return 0;
|
|
-
|
|
- if (EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_ONESHOT)) {
|
|
- if (digest_op(digest_ctx, data, count, digest_ctx->digest_res, 0) >= 0)
|
|
- return 1;
|
|
- } else if (digest_op(digest_ctx, data, count, NULL, COP_FLAG_UPDATE) >= 0) {
|
|
- return 1;
|
|
- }
|
|
-
|
|
- SYSerr(SYS_F_IOCTL, errno);
|
|
- return 0;
|
|
-}
|
|
-
|
|
-static int digest_final(EVP_MD_CTX *ctx, unsigned char *md)
|
|
-{
|
|
- struct digest_ctx *digest_ctx =
|
|
- (struct digest_ctx *)EVP_MD_CTX_md_data(ctx);
|
|
-
|
|
- if (md == NULL || digest_ctx == NULL)
|
|
- return 0;
|
|
-
|
|
- if (EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_ONESHOT)) {
|
|
- memcpy(md, digest_ctx->digest_res, EVP_MD_CTX_size(ctx));
|
|
- } else if (digest_op(digest_ctx, NULL, 0, md, COP_FLAG_FINAL) < 0) {
|
|
- SYSerr(SYS_F_IOCTL, errno);
|
|
- return 0;
|
|
- }
|
|
-
|
|
- return 1;
|
|
-}
|
|
-
|
|
-static int digest_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
|
|
-{
|
|
- struct digest_ctx *digest_from =
|
|
- (struct digest_ctx *)EVP_MD_CTX_md_data(from);
|
|
- struct digest_ctx *digest_to =
|
|
- (struct digest_ctx *)EVP_MD_CTX_md_data(to);
|
|
- struct cphash_op cphash;
|
|
-
|
|
- if (digest_from == NULL || digest_from->init_called != 1)
|
|
- return 1;
|
|
-
|
|
- if (!digest_init(to)) {
|
|
- SYSerr(SYS_F_IOCTL, errno);
|
|
- return 0;
|
|
- }
|
|
-
|
|
- cphash.src_ses = digest_from->sess.ses;
|
|
- cphash.dst_ses = digest_to->sess.ses;
|
|
- if (ioctl(cfd, CIOCCPHASH, &cphash) < 0) {
|
|
- SYSerr(SYS_F_IOCTL, errno);
|
|
- return 0;
|
|
- }
|
|
- return 1;
|
|
-}
|
|
-
|
|
-static int digest_cleanup(EVP_MD_CTX *ctx)
|
|
-{
|
|
- struct digest_ctx *digest_ctx =
|
|
- (struct digest_ctx *)EVP_MD_CTX_md_data(ctx);
|
|
-
|
|
- if (digest_ctx == NULL)
|
|
- return 1;
|
|
-
|
|
- return clean_devcrypto_session(&digest_ctx->sess);
|
|
-}
|
|
-
|
|
-/*
|
|
- * Keep tables of known nids, associated methods, selected digests, and
|
|
- * driver info.
|
|
- * Note that known_digest_nids[] isn't necessarily indexed the same way as
|
|
- * digest_data[] above, which the other tables are.
|
|
- */
|
|
-static int known_digest_nids[OSSL_NELEM(digest_data)];
|
|
-static int known_digest_nids_amount = -1; /* -1 indicates not yet initialised */
|
|
-static EVP_MD *known_digest_methods[OSSL_NELEM(digest_data)] = { NULL, };
|
|
-static int selected_digests[OSSL_NELEM(digest_data)];
|
|
-static struct driver_info_st digest_driver_info[OSSL_NELEM(digest_data)];
|
|
-
|
|
-static int devcrypto_test_digest(size_t digest_data_index)
|
|
-{
|
|
- return (digest_driver_info[digest_data_index].status == DEVCRYPTO_STATUS_USABLE
|
|
- && selected_digests[digest_data_index] == 1
|
|
- && (digest_driver_info[digest_data_index].accelerated
|
|
- == DEVCRYPTO_ACCELERATED
|
|
- || use_softdrivers == DEVCRYPTO_USE_SOFTWARE
|
|
- || (digest_driver_info[digest_data_index].accelerated
|
|
- != DEVCRYPTO_NOT_ACCELERATED
|
|
- && use_softdrivers == DEVCRYPTO_REJECT_SOFTWARE)));
|
|
-}
|
|
-
|
|
-static void rebuild_known_digest_nids(ENGINE *e)
|
|
-{
|
|
- size_t i;
|
|
-
|
|
- for (i = 0, known_digest_nids_amount = 0; i < OSSL_NELEM(digest_data); i++) {
|
|
- if (devcrypto_test_digest(i))
|
|
- known_digest_nids[known_digest_nids_amount++] = digest_data[i].nid;
|
|
- }
|
|
- ENGINE_unregister_digests(e);
|
|
- ENGINE_register_digests(e);
|
|
-}
|
|
-
|
|
-static void prepare_digest_methods(void)
|
|
-{
|
|
- size_t i;
|
|
- struct session_op sess1, sess2;
|
|
-#ifdef CIOCGSESSINFO
|
|
- struct session_info_op siop;
|
|
-#endif
|
|
- struct cphash_op cphash;
|
|
-
|
|
- memset(&digest_driver_info, 0, sizeof(digest_driver_info));
|
|
-
|
|
- memset(&sess1, 0, sizeof(sess1));
|
|
- memset(&sess2, 0, sizeof(sess2));
|
|
-
|
|
- for (i = 0, known_digest_nids_amount = 0; i < OSSL_NELEM(digest_data);
|
|
- i++) {
|
|
-
|
|
- selected_digests[i] = 1;
|
|
-
|
|
- /*
|
|
- * Check that the digest is usable
|
|
- */
|
|
- sess1.mac = digest_data[i].devcryptoid;
|
|
- sess2.ses = 0;
|
|
- if (ioctl(cfd, CIOCGSESSION, &sess1) < 0) {
|
|
- digest_driver_info[i].status = DEVCRYPTO_STATUS_NO_CIOCGSESSION;
|
|
- goto finish;
|
|
- }
|
|
-
|
|
-#ifdef CIOCGSESSINFO
|
|
- /* gather hardware acceleration info from the driver */
|
|
- siop.ses = sess1.ses;
|
|
- if (ioctl(cfd, CIOCGSESSINFO, &siop) < 0) {
|
|
- digest_driver_info[i].accelerated = DEVCRYPTO_ACCELERATION_UNKNOWN;
|
|
- } else {
|
|
- digest_driver_info[i].driver_name =
|
|
- OPENSSL_strndup(siop.hash_info.cra_driver_name,
|
|
- CRYPTODEV_MAX_ALG_NAME);
|
|
- if (siop.flags & SIOP_FLAG_KERNEL_DRIVER_ONLY)
|
|
- digest_driver_info[i].accelerated = DEVCRYPTO_ACCELERATED;
|
|
- else
|
|
- digest_driver_info[i].accelerated = DEVCRYPTO_NOT_ACCELERATED;
|
|
- }
|
|
-#endif
|
|
-
|
|
- /* digest must be capable of hash state copy */
|
|
- sess2.mac = sess1.mac;
|
|
- if (ioctl(cfd, CIOCGSESSION, &sess2) < 0) {
|
|
- digest_driver_info[i].status = DEVCRYPTO_STATUS_FAILURE;
|
|
- goto finish;
|
|
- }
|
|
- cphash.src_ses = sess1.ses;
|
|
- cphash.dst_ses = sess2.ses;
|
|
- if (ioctl(cfd, CIOCCPHASH, &cphash) < 0) {
|
|
- digest_driver_info[i].status = DEVCRYPTO_STATUS_NO_CIOCCPHASH;
|
|
- goto finish;
|
|
- }
|
|
- if ((known_digest_methods[i] = EVP_MD_meth_new(digest_data[i].nid,
|
|
- NID_undef)) == NULL
|
|
- || !EVP_MD_meth_set_input_blocksize(known_digest_methods[i],
|
|
- digest_data[i].blocksize)
|
|
- || !EVP_MD_meth_set_result_size(known_digest_methods[i],
|
|
- digest_data[i].digestlen)
|
|
- || !EVP_MD_meth_set_init(known_digest_methods[i], digest_init)
|
|
- || !EVP_MD_meth_set_update(known_digest_methods[i], digest_update)
|
|
- || !EVP_MD_meth_set_final(known_digest_methods[i], digest_final)
|
|
- || !EVP_MD_meth_set_copy(known_digest_methods[i], digest_copy)
|
|
- || !EVP_MD_meth_set_cleanup(known_digest_methods[i], digest_cleanup)
|
|
- || !EVP_MD_meth_set_app_datasize(known_digest_methods[i],
|
|
- sizeof(struct digest_ctx))) {
|
|
- digest_driver_info[i].status = DEVCRYPTO_STATUS_FAILURE;
|
|
- EVP_MD_meth_free(known_digest_methods[i]);
|
|
- known_digest_methods[i] = NULL;
|
|
- goto finish;
|
|
- }
|
|
- digest_driver_info[i].status = DEVCRYPTO_STATUS_USABLE;
|
|
-finish:
|
|
- ioctl(cfd, CIOCFSESSION, &sess1.ses);
|
|
- if (sess2.ses != 0)
|
|
- ioctl(cfd, CIOCFSESSION, &sess2.ses);
|
|
- if (devcrypto_test_digest(i))
|
|
- known_digest_nids[known_digest_nids_amount++] = digest_data[i].nid;
|
|
- }
|
|
-}
|
|
-
|
|
-static const EVP_MD *get_digest_method(int nid)
|
|
-{
|
|
- size_t i = get_digest_data_index(nid);
|
|
-
|
|
- if (i == (size_t)-1)
|
|
- return NULL;
|
|
- return known_digest_methods[i];
|
|
-}
|
|
-
|
|
-static int get_digest_nids(const int **nids)
|
|
-{
|
|
- *nids = known_digest_nids;
|
|
- return known_digest_nids_amount;
|
|
-}
|
|
-
|
|
-static void destroy_digest_method(int nid)
|
|
-{
|
|
- size_t i = get_digest_data_index(nid);
|
|
-
|
|
- EVP_MD_meth_free(known_digest_methods[i]);
|
|
- known_digest_methods[i] = NULL;
|
|
-}
|
|
-
|
|
-static void destroy_all_digest_methods(void)
|
|
-{
|
|
- size_t i;
|
|
-
|
|
- for (i = 0; i < OSSL_NELEM(digest_data); i++) {
|
|
- destroy_digest_method(digest_data[i].nid);
|
|
- OPENSSL_free(digest_driver_info[i].driver_name);
|
|
- digest_driver_info[i].driver_name = NULL;
|
|
- }
|
|
-}
|
|
-
|
|
-static int devcrypto_digests(ENGINE *e, const EVP_MD **digest,
|
|
- const int **nids, int nid)
|
|
-{
|
|
- if (digest == NULL)
|
|
- return get_digest_nids(nids);
|
|
-
|
|
- *digest = get_digest_method(nid);
|
|
-
|
|
- return *digest != NULL;
|
|
-}
|
|
-
|
|
-static void devcrypto_select_all_digests(int *digest_list)
|
|
-{
|
|
- size_t i;
|
|
-
|
|
- for (i = 0; i < OSSL_NELEM(digest_data); i++)
|
|
- digest_list[i] = 1;
|
|
-}
|
|
-
|
|
-static int cryptodev_select_digest_cb(const char *str, int len, void *usr)
|
|
-{
|
|
- int *digest_list = (int *)usr;
|
|
- char *name;
|
|
- const EVP_MD *EVP;
|
|
- size_t i;
|
|
-
|
|
- if (len == 0)
|
|
- return 1;
|
|
- if (usr == NULL || (name = OPENSSL_strndup(str, len)) == NULL)
|
|
- return 0;
|
|
- EVP = EVP_get_digestbyname(name);
|
|
- if (EVP == NULL)
|
|
- fprintf(stderr, "devcrypto: unknown digest %s\n", name);
|
|
- else if ((i = find_digest_data_index(EVP_MD_type(EVP))) != (size_t)-1)
|
|
- digest_list[i] = 1;
|
|
- else
|
|
- fprintf(stderr, "devcrypto: digest %s not available\n", name);
|
|
- OPENSSL_free(name);
|
|
- return 1;
|
|
-}
|
|
-
|
|
-static void dump_digest_info(void)
|
|
-{
|
|
- size_t i;
|
|
- const char *name;
|
|
-
|
|
- fprintf (stderr, "Information about digests supported by the /dev/crypto"
|
|
- " engine:\n");
|
|
-#ifndef CIOCGSESSINFO
|
|
- fprintf(stderr, "CIOCGSESSINFO (session info call) unavailable\n");
|
|
-#endif
|
|
-
|
|
- for (i = 0; i < OSSL_NELEM(digest_data); i++) {
|
|
- name = OBJ_nid2sn(digest_data[i].nid);
|
|
- fprintf (stderr, "Digest %s, NID=%d, /dev/crypto info: id=%d, driver=%s",
|
|
- name ? name : "unknown", digest_data[i].nid,
|
|
- digest_data[i].devcryptoid,
|
|
- digest_driver_info[i].driver_name ? digest_driver_info[i].driver_name : "unknown");
|
|
- if (digest_driver_info[i].status == DEVCRYPTO_STATUS_NO_CIOCGSESSION) {
|
|
- fprintf (stderr, ". CIOCGSESSION (session open) failed\n");
|
|
- continue;
|
|
- }
|
|
- if (digest_driver_info[i].accelerated == DEVCRYPTO_ACCELERATED)
|
|
- fprintf(stderr, " (hw accelerated)");
|
|
- else if (digest_driver_info[i].accelerated == DEVCRYPTO_NOT_ACCELERATED)
|
|
- fprintf(stderr, " (software)");
|
|
- else
|
|
- fprintf(stderr, " (acceleration status unknown)");
|
|
- if (cipher_driver_info[i].status == DEVCRYPTO_STATUS_FAILURE)
|
|
- fprintf (stderr, ". Cipher setup failed\n");
|
|
- else if (digest_driver_info[i].status == DEVCRYPTO_STATUS_NO_CIOCCPHASH)
|
|
- fprintf(stderr, ", CIOCCPHASH failed\n");
|
|
- else
|
|
- fprintf(stderr, ", CIOCCPHASH capable\n");
|
|
- }
|
|
- fprintf(stderr, "\n");
|
|
-}
|
|
-
|
|
-#endif
|
|
-
|
|
-/******************************************************************************
|
|
- *
|
|
- * CONTROL COMMANDS
|
|
- *
|
|
- *****/
|
|
-
|
|
-#define DEVCRYPTO_CMD_USE_SOFTDRIVERS ENGINE_CMD_BASE
|
|
-#define DEVCRYPTO_CMD_CIPHERS (ENGINE_CMD_BASE + 1)
|
|
-#define DEVCRYPTO_CMD_DIGESTS (ENGINE_CMD_BASE + 2)
|
|
-#define DEVCRYPTO_CMD_DUMP_INFO (ENGINE_CMD_BASE + 3)
|
|
-
|
|
-/* Helper macros for CPP string composition */
|
|
-#ifndef OPENSSL_MSTR
|
|
-# define OPENSSL_MSTR_HELPER(x) #x
|
|
-# define OPENSSL_MSTR(x) OPENSSL_MSTR_HELPER(x)
|
|
-#endif
|
|
-
|
|
-static const ENGINE_CMD_DEFN devcrypto_cmds[] = {
|
|
-#ifdef CIOCGSESSINFO
|
|
- {DEVCRYPTO_CMD_USE_SOFTDRIVERS,
|
|
- "USE_SOFTDRIVERS",
|
|
- "specifies whether to use software (not accelerated) drivers ("
|
|
- OPENSSL_MSTR(DEVCRYPTO_REQUIRE_ACCELERATED) "=use only accelerated drivers, "
|
|
- OPENSSL_MSTR(DEVCRYPTO_USE_SOFTWARE) "=allow all drivers, "
|
|
- OPENSSL_MSTR(DEVCRYPTO_REJECT_SOFTWARE)
|
|
- "=use if acceleration can't be determined) [default="
|
|
- OPENSSL_MSTR(DEVCRYPTO_DEFAULT_USE_SOFDTRIVERS) "]",
|
|
- ENGINE_CMD_FLAG_NUMERIC},
|
|
-#endif
|
|
-
|
|
- {DEVCRYPTO_CMD_CIPHERS,
|
|
- "CIPHERS",
|
|
- "either ALL, NONE, or a comma-separated list of ciphers to enable [default=ALL]",
|
|
- ENGINE_CMD_FLAG_STRING},
|
|
-
|
|
-#ifdef IMPLEMENT_DIGEST
|
|
- {DEVCRYPTO_CMD_DIGESTS,
|
|
- "DIGESTS",
|
|
- "either ALL, NONE, or a comma-separated list of digests to enable [default=ALL]",
|
|
- ENGINE_CMD_FLAG_STRING},
|
|
-#endif
|
|
-
|
|
- {DEVCRYPTO_CMD_DUMP_INFO,
|
|
- "DUMP_INFO",
|
|
- "dump info about each algorithm to stderr; use 'openssl engine -pre DUMP_INFO devcrypto'",
|
|
- ENGINE_CMD_FLAG_NO_INPUT},
|
|
-
|
|
- {0, NULL, NULL, 0}
|
|
-};
|
|
-
|
|
-static int devcrypto_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) (void))
|
|
-{
|
|
- int *new_list;
|
|
- switch (cmd) {
|
|
-#ifdef CIOCGSESSINFO
|
|
- case DEVCRYPTO_CMD_USE_SOFTDRIVERS:
|
|
- switch (i) {
|
|
- case DEVCRYPTO_REQUIRE_ACCELERATED:
|
|
- case DEVCRYPTO_USE_SOFTWARE:
|
|
- case DEVCRYPTO_REJECT_SOFTWARE:
|
|
- break;
|
|
- default:
|
|
- fprintf(stderr, "devcrypto: invalid value (%ld) for USE_SOFTDRIVERS\n", i);
|
|
- return 0;
|
|
- }
|
|
- if (use_softdrivers == i)
|
|
- return 1;
|
|
- use_softdrivers = i;
|
|
-#ifdef IMPLEMENT_DIGEST
|
|
- rebuild_known_digest_nids(e);
|
|
-#endif
|
|
- rebuild_known_cipher_nids(e);
|
|
- return 1;
|
|
-#endif /* CIOCGSESSINFO */
|
|
-
|
|
- case DEVCRYPTO_CMD_CIPHERS:
|
|
- if (p == NULL)
|
|
- return 1;
|
|
- if (strcasecmp((const char *)p, "ALL") == 0) {
|
|
- devcrypto_select_all_ciphers(selected_ciphers);
|
|
- } else if (strcasecmp((const char*)p, "NONE") == 0) {
|
|
- memset(selected_ciphers, 0, sizeof(selected_ciphers));
|
|
- } else {
|
|
- new_list=OPENSSL_zalloc(sizeof(selected_ciphers));
|
|
- if (!CONF_parse_list(p, ',', 1, cryptodev_select_cipher_cb, new_list)) {
|
|
- OPENSSL_free(new_list);
|
|
- return 0;
|
|
- }
|
|
- memcpy(selected_ciphers, new_list, sizeof(selected_ciphers));
|
|
- OPENSSL_free(new_list);
|
|
- }
|
|
- rebuild_known_cipher_nids(e);
|
|
- return 1;
|
|
-
|
|
-#ifdef IMPLEMENT_DIGEST
|
|
- case DEVCRYPTO_CMD_DIGESTS:
|
|
- if (p == NULL)
|
|
- return 1;
|
|
- if (strcasecmp((const char *)p, "ALL") == 0) {
|
|
- devcrypto_select_all_digests(selected_digests);
|
|
- } else if (strcasecmp((const char*)p, "NONE") == 0) {
|
|
- memset(selected_digests, 0, sizeof(selected_digests));
|
|
- } else {
|
|
- new_list=OPENSSL_zalloc(sizeof(selected_digests));
|
|
- if (!CONF_parse_list(p, ',', 1, cryptodev_select_digest_cb, new_list)) {
|
|
- OPENSSL_free(new_list);
|
|
- return 0;
|
|
- }
|
|
- memcpy(selected_digests, new_list, sizeof(selected_digests));
|
|
- OPENSSL_free(new_list);
|
|
- }
|
|
- rebuild_known_digest_nids(e);
|
|
- return 1;
|
|
-#endif /* IMPLEMENT_DIGEST */
|
|
-
|
|
- case DEVCRYPTO_CMD_DUMP_INFO:
|
|
- dump_cipher_info();
|
|
-#ifdef IMPLEMENT_DIGEST
|
|
- dump_digest_info();
|
|
-#endif
|
|
- return 1;
|
|
-
|
|
- default:
|
|
- break;
|
|
- }
|
|
- return 0;
|
|
-}
|
|
-
|
|
-/******************************************************************************
|
|
- *
|
|
- * LOAD / UNLOAD
|
|
- *
|
|
- *****/
|
|
-
|
|
-static int devcrypto_unload(ENGINE *e)
|
|
-{
|
|
- destroy_all_cipher_methods();
|
|
-#ifdef IMPLEMENT_DIGEST
|
|
- destroy_all_digest_methods();
|
|
-#endif
|
|
-
|
|
- close(cfd);
|
|
-
|
|
- return 1;
|
|
-}
|
|
-/*
|
|
- * This engine is always built into libcrypto, so it doesn't offer any
|
|
- * ability to be dynamically loadable.
|
|
- */
|
|
-void engine_load_devcrypto_int()
|
|
-{
|
|
- ENGINE *e = NULL;
|
|
-
|
|
- if ((cfd = open("/dev/crypto", O_RDWR, 0)) < 0) {
|
|
-#ifndef ENGINE_DEVCRYPTO_DEBUG
|
|
- if (errno != ENOENT)
|
|
-#endif
|
|
- fprintf(stderr, "Could not open /dev/crypto: %s\n", strerror(errno));
|
|
- return;
|
|
- }
|
|
-
|
|
- if ((e = ENGINE_new()) == NULL
|
|
- || !ENGINE_set_destroy_function(e, devcrypto_unload)) {
|
|
- ENGINE_free(e);
|
|
- /*
|
|
- * We know that devcrypto_unload() won't be called when one of the
|
|
- * above two calls have failed, so we close cfd explicitly here to
|
|
- * avoid leaking resources.
|
|
- */
|
|
- close(cfd);
|
|
- return;
|
|
- }
|
|
-
|
|
- prepare_cipher_methods();
|
|
-#ifdef IMPLEMENT_DIGEST
|
|
- prepare_digest_methods();
|
|
-#endif
|
|
-
|
|
- if (!ENGINE_set_id(e, "devcrypto")
|
|
- || !ENGINE_set_name(e, "/dev/crypto engine")
|
|
- || !ENGINE_set_cmd_defns(e, devcrypto_cmds)
|
|
- || !ENGINE_set_ctrl_function(e, devcrypto_ctrl)
|
|
-
|
|
-/*
|
|
- * Asymmetric ciphers aren't well supported with /dev/crypto. Among the BSD
|
|
- * implementations, it seems to only exist in FreeBSD, and regarding the
|
|
- * parameters in its crypt_kop, the manual crypto(4) has this to say:
|
|
- *
|
|
- * The semantics of these arguments are currently undocumented.
|
|
- *
|
|
- * Reading through the FreeBSD source code doesn't give much more than
|
|
- * their CRK_MOD_EXP implementation for ubsec.
|
|
- *
|
|
- * It doesn't look much better with cryptodev-linux. They have the crypt_kop
|
|
- * structure as well as the command (CRK_*) in cryptodev.h, but no support
|
|
- * seems to be implemented at all for the moment.
|
|
- *
|
|
- * At the time of writing, it seems impossible to write proper support for
|
|
- * FreeBSD's asym features without some very deep knowledge and access to
|
|
- * specific kernel modules.
|
|
- *
|
|
- * /Richard Levitte, 2017-05-11
|
|
- */
|
|
-#if 0
|
|
-# ifndef OPENSSL_NO_RSA
|
|
- || !ENGINE_set_RSA(e, devcrypto_rsa)
|
|
-# endif
|
|
-# ifndef OPENSSL_NO_DSA
|
|
- || !ENGINE_set_DSA(e, devcrypto_dsa)
|
|
-# endif
|
|
-# ifndef OPENSSL_NO_DH
|
|
- || !ENGINE_set_DH(e, devcrypto_dh)
|
|
-# endif
|
|
-# ifndef OPENSSL_NO_EC
|
|
- || !ENGINE_set_EC(e, devcrypto_ec)
|
|
-# endif
|
|
-#endif
|
|
- || !ENGINE_set_ciphers(e, devcrypto_ciphers)
|
|
-#ifdef IMPLEMENT_DIGEST
|
|
- || !ENGINE_set_digests(e, devcrypto_digests)
|
|
-#endif
|
|
- ) {
|
|
- ENGINE_free(e);
|
|
- return;
|
|
- }
|
|
-
|
|
- ENGINE_add(e);
|
|
- ENGINE_free(e); /* Loose our local reference */
|
|
- ERR_clear_error();
|
|
-}
|
|
--- /dev/null
|
|
+++ b/engines/e_devcrypto.c
|
|
@@ -0,0 +1,1315 @@
|
|
+/*
|
|
+ * Copyright 2017-2019 The OpenSSL Project Authors. All Rights Reserved.
|
|
+ *
|
|
+ * Licensed under the OpenSSL license (the "License"). You may not use
|
|
+ * this file except in compliance with the License. You can obtain a copy
|
|
+ * in the file LICENSE in the source distribution or at
|
|
+ * https://www.openssl.org/source/license.html
|
|
+ */
|
|
+
|
|
+#include "../e_os.h"
|
|
+#include <string.h>
|
|
+#include <sys/types.h>
|
|
+#include <sys/stat.h>
|
|
+#include <fcntl.h>
|
|
+#include <sys/ioctl.h>
|
|
+#include <unistd.h>
|
|
+#include <assert.h>
|
|
+
|
|
+#include <openssl/conf.h>
|
|
+#include <openssl/evp.h>
|
|
+#include <openssl/err.h>
|
|
+#include <openssl/engine.h>
|
|
+#include <openssl/objects.h>
|
|
+#include <crypto/cryptodev.h>
|
|
+
|
|
+/* #define ENGINE_DEVCRYPTO_DEBUG */
|
|
+
|
|
+#ifdef CRYPTO_ALGORITHM_MIN
|
|
+# define CHECK_BSD_STYLE_MACROS
|
|
+#endif
|
|
+
|
|
+#define engine_devcrypto_id "devcrypto"
|
|
+
|
|
+/*
|
|
+ * ONE global file descriptor for all sessions. This allows operations
|
|
+ * such as digest session data copying (see digest_copy()), but is also
|
|
+ * saner... why re-open /dev/crypto for every session?
|
|
+ */
|
|
+static int cfd = -1;
|
|
+#define DEVCRYPTO_REQUIRE_ACCELERATED 0 /* require confirmation of acceleration */
|
|
+#define DEVCRYPTO_USE_SOFTWARE 1 /* allow software drivers */
|
|
+#define DEVCRYPTO_REJECT_SOFTWARE 2 /* only disallow confirmed software drivers */
|
|
+
|
|
+#define DEVCRYPTO_DEFAULT_USE_SOFTDRIVERS DEVCRYPTO_REJECT_SOFTWARE
|
|
+static int use_softdrivers = DEVCRYPTO_DEFAULT_USE_SOFTDRIVERS;
|
|
+
|
|
+/*
|
|
+ * cipher/digest status & acceleration definitions
|
|
+ * Make sure the defaults are set to 0
|
|
+ */
|
|
+struct driver_info_st {
|
|
+ enum devcrypto_status_t {
|
|
+ DEVCRYPTO_STATUS_FAILURE = -3, /* unusable for other reason */
|
|
+ DEVCRYPTO_STATUS_NO_CIOCCPHASH = -2, /* hash state copy not supported */
|
|
+ DEVCRYPTO_STATUS_NO_CIOCGSESSION = -1, /* session open failed */
|
|
+ DEVCRYPTO_STATUS_UNKNOWN = 0, /* not tested yet */
|
|
+ DEVCRYPTO_STATUS_USABLE = 1 /* algo can be used */
|
|
+ } status;
|
|
+
|
|
+ enum devcrypto_accelerated_t {
|
|
+ DEVCRYPTO_NOT_ACCELERATED = -1, /* software implemented */
|
|
+ DEVCRYPTO_ACCELERATION_UNKNOWN = 0, /* acceleration support unkown */
|
|
+ DEVCRYPTO_ACCELERATED = 1 /* hardware accelerated */
|
|
+ } accelerated;
|
|
+
|
|
+ char *driver_name;
|
|
+};
|
|
+
|
|
+#ifdef OPENSSL_NO_DYNAMIC_ENGINE
|
|
+void engine_load_devcrypto_int(void);
|
|
+#endif
|
|
+
|
|
+static int clean_devcrypto_session(struct session_op *sess) {
|
|
+ if (ioctl(cfd, CIOCFSESSION, &sess->ses) < 0) {
|
|
+ SYSerr(SYS_F_IOCTL, errno);
|
|
+ return 0;
|
|
+ }
|
|
+ memset(sess, 0, sizeof(struct session_op));
|
|
+ return 1;
|
|
+}
|
|
+
|
|
+/******************************************************************************
|
|
+ *
|
|
+ * Ciphers
|
|
+ *
|
|
+ * Because they all do the same basic operation, we have only one set of
|
|
+ * method functions for them all to share, and a mapping table between
|
|
+ * NIDs and cryptodev IDs, with all the necessary size data.
|
|
+ *
|
|
+ *****/
|
|
+
|
|
+struct cipher_ctx {
|
|
+ struct session_op sess;
|
|
+ int op; /* COP_ENCRYPT or COP_DECRYPT */
|
|
+ unsigned long mode; /* EVP_CIPH_*_MODE */
|
|
+
|
|
+ /* to handle ctr mode being a stream cipher */
|
|
+ unsigned char partial[EVP_MAX_BLOCK_LENGTH];
|
|
+ unsigned int blocksize, num;
|
|
+};
|
|
+
|
|
+static const struct cipher_data_st {
|
|
+ int nid;
|
|
+ int blocksize;
|
|
+ int keylen;
|
|
+ int ivlen;
|
|
+ int flags;
|
|
+ int devcryptoid;
|
|
+} cipher_data[] = {
|
|
+#ifndef OPENSSL_NO_DES
|
|
+ { NID_des_cbc, 8, 8, 8, EVP_CIPH_CBC_MODE, CRYPTO_DES_CBC },
|
|
+ { NID_des_ede3_cbc, 8, 24, 8, EVP_CIPH_CBC_MODE, CRYPTO_3DES_CBC },
|
|
+#endif
|
|
+#ifndef OPENSSL_NO_BF
|
|
+ { NID_bf_cbc, 8, 16, 8, EVP_CIPH_CBC_MODE, CRYPTO_BLF_CBC },
|
|
+#endif
|
|
+#ifndef OPENSSL_NO_CAST
|
|
+ { NID_cast5_cbc, 8, 16, 8, EVP_CIPH_CBC_MODE, CRYPTO_CAST_CBC },
|
|
+#endif
|
|
+ { NID_aes_128_cbc, 16, 128 / 8, 16, EVP_CIPH_CBC_MODE, CRYPTO_AES_CBC },
|
|
+ { NID_aes_192_cbc, 16, 192 / 8, 16, EVP_CIPH_CBC_MODE, CRYPTO_AES_CBC },
|
|
+ { NID_aes_256_cbc, 16, 256 / 8, 16, EVP_CIPH_CBC_MODE, CRYPTO_AES_CBC },
|
|
+#ifndef OPENSSL_NO_RC4
|
|
+ { NID_rc4, 1, 16, 0, EVP_CIPH_STREAM_CIPHER, CRYPTO_ARC4 },
|
|
+#endif
|
|
+#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_AES_CTR)
|
|
+ { NID_aes_128_ctr, 16, 128 / 8, 16, EVP_CIPH_CTR_MODE, CRYPTO_AES_CTR },
|
|
+ { NID_aes_192_ctr, 16, 192 / 8, 16, EVP_CIPH_CTR_MODE, CRYPTO_AES_CTR },
|
|
+ { NID_aes_256_ctr, 16, 256 / 8, 16, EVP_CIPH_CTR_MODE, CRYPTO_AES_CTR },
|
|
+#endif
|
|
+#if 0 /* Not yet supported */
|
|
+ { NID_aes_128_xts, 16, 128 / 8 * 2, 16, EVP_CIPH_XTS_MODE, CRYPTO_AES_XTS },
|
|
+ { NID_aes_256_xts, 16, 256 / 8 * 2, 16, EVP_CIPH_XTS_MODE, CRYPTO_AES_XTS },
|
|
+#endif
|
|
+#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_AES_ECB)
|
|
+ { NID_aes_128_ecb, 16, 128 / 8, 0, EVP_CIPH_ECB_MODE, CRYPTO_AES_ECB },
|
|
+ { NID_aes_192_ecb, 16, 192 / 8, 0, EVP_CIPH_ECB_MODE, CRYPTO_AES_ECB },
|
|
+ { NID_aes_256_ecb, 16, 256 / 8, 0, EVP_CIPH_ECB_MODE, CRYPTO_AES_ECB },
|
|
+#endif
|
|
+#if 0 /* Not yet supported */
|
|
+ { NID_aes_128_gcm, 16, 128 / 8, 16, EVP_CIPH_GCM_MODE, CRYPTO_AES_GCM },
|
|
+ { NID_aes_192_gcm, 16, 192 / 8, 16, EVP_CIPH_GCM_MODE, CRYPTO_AES_GCM },
|
|
+ { NID_aes_256_gcm, 16, 256 / 8, 16, EVP_CIPH_GCM_MODE, CRYPTO_AES_GCM },
|
|
+#endif
|
|
+#ifndef OPENSSL_NO_CAMELLIA
|
|
+ { NID_camellia_128_cbc, 16, 128 / 8, 16, EVP_CIPH_CBC_MODE,
|
|
+ CRYPTO_CAMELLIA_CBC },
|
|
+ { NID_camellia_192_cbc, 16, 192 / 8, 16, EVP_CIPH_CBC_MODE,
|
|
+ CRYPTO_CAMELLIA_CBC },
|
|
+ { NID_camellia_256_cbc, 16, 256 / 8, 16, EVP_CIPH_CBC_MODE,
|
|
+ CRYPTO_CAMELLIA_CBC },
|
|
+#endif
|
|
+};
|
|
+
|
|
+static size_t find_cipher_data_index(int nid)
|
|
+{
|
|
+ size_t i;
|
|
+
|
|
+ for (i = 0; i < OSSL_NELEM(cipher_data); i++)
|
|
+ if (nid == cipher_data[i].nid)
|
|
+ return i;
|
|
+ return (size_t)-1;
|
|
+}
|
|
+
|
|
+static size_t get_cipher_data_index(int nid)
|
|
+{
|
|
+ size_t i = find_cipher_data_index(nid);
|
|
+
|
|
+ if (i != (size_t)-1)
|
|
+ return i;
|
|
+
|
|
+ /*
|
|
+ * Code further down must make sure that only NIDs in the table above
|
|
+ * are used. If any other NID reaches this function, there's a grave
|
|
+ * coding error further down.
|
|
+ */
|
|
+ assert("Code that never should be reached" == NULL);
|
|
+ return -1;
|
|
+}
|
|
+
|
|
+static const struct cipher_data_st *get_cipher_data(int nid)
|
|
+{
|
|
+ return &cipher_data[get_cipher_data_index(nid)];
|
|
+}
|
|
+
|
|
+/*
|
|
+ * Following are the three necessary functions to map OpenSSL functionality
|
|
+ * with cryptodev.
|
|
+ */
|
|
+
|
|
+static int cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
+ const unsigned char *iv, int enc)
|
|
+{
|
|
+ struct cipher_ctx *cipher_ctx =
|
|
+ (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
|
|
+ const struct cipher_data_st *cipher_d =
|
|
+ get_cipher_data(EVP_CIPHER_CTX_nid(ctx));
|
|
+
|
|
+ /* cleanup a previous session */
|
|
+ if (cipher_ctx->sess.ses != 0 &&
|
|
+ clean_devcrypto_session(&cipher_ctx->sess) == 0)
|
|
+ return 0;
|
|
+
|
|
+ cipher_ctx->sess.cipher = cipher_d->devcryptoid;
|
|
+ cipher_ctx->sess.keylen = cipher_d->keylen;
|
|
+ cipher_ctx->sess.key = (void *)key;
|
|
+ cipher_ctx->op = enc ? COP_ENCRYPT : COP_DECRYPT;
|
|
+ cipher_ctx->mode = cipher_d->flags & EVP_CIPH_MODE;
|
|
+ cipher_ctx->blocksize = cipher_d->blocksize;
|
|
+ if (ioctl(cfd, CIOCGSESSION, &cipher_ctx->sess) < 0) {
|
|
+ SYSerr(SYS_F_IOCTL, errno);
|
|
+ return 0;
|
|
+ }
|
|
+
|
|
+ return 1;
|
|
+}
|
|
+
|
|
+static int cipher_do_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
+ const unsigned char *in, size_t inl)
|
|
+{
|
|
+ struct cipher_ctx *cipher_ctx =
|
|
+ (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
|
|
+ struct crypt_op cryp;
|
|
+ unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx);
|
|
+#if !defined(COP_FLAG_WRITE_IV)
|
|
+ unsigned char saved_iv[EVP_MAX_IV_LENGTH];
|
|
+ const unsigned char *ivptr;
|
|
+ size_t nblocks, ivlen;
|
|
+#endif
|
|
+
|
|
+ memset(&cryp, 0, sizeof(cryp));
|
|
+ cryp.ses = cipher_ctx->sess.ses;
|
|
+ cryp.len = inl;
|
|
+ cryp.src = (void *)in;
|
|
+ cryp.dst = (void *)out;
|
|
+ cryp.iv = (void *)iv;
|
|
+ cryp.op = cipher_ctx->op;
|
|
+#if !defined(COP_FLAG_WRITE_IV)
|
|
+ cryp.flags = 0;
|
|
+
|
|
+ ivlen = EVP_CIPHER_CTX_iv_length(ctx);
|
|
+ if (ivlen > 0)
|
|
+ switch (cipher_ctx->mode) {
|
|
+ case EVP_CIPH_CBC_MODE:
|
|
+ assert(inl >= ivlen);
|
|
+ if (!EVP_CIPHER_CTX_encrypting(ctx)) {
|
|
+ ivptr = in + inl - ivlen;
|
|
+ memcpy(saved_iv, ivptr, ivlen);
|
|
+ }
|
|
+ break;
|
|
+
|
|
+ case EVP_CIPH_CTR_MODE:
|
|
+ break;
|
|
+
|
|
+ default: /* should not happen */
|
|
+ return 0;
|
|
+ }
|
|
+#else
|
|
+ cryp.flags = COP_FLAG_WRITE_IV;
|
|
+#endif
|
|
+
|
|
+ if (ioctl(cfd, CIOCCRYPT, &cryp) < 0) {
|
|
+ SYSerr(SYS_F_IOCTL, errno);
|
|
+ return 0;
|
|
+ }
|
|
+
|
|
+#if !defined(COP_FLAG_WRITE_IV)
|
|
+ if (ivlen > 0)
|
|
+ switch (cipher_ctx->mode) {
|
|
+ case EVP_CIPH_CBC_MODE:
|
|
+ assert(inl >= ivlen);
|
|
+ if (EVP_CIPHER_CTX_encrypting(ctx))
|
|
+ ivptr = out + inl - ivlen;
|
|
+ else
|
|
+ ivptr = saved_iv;
|
|
+
|
|
+ memcpy(iv, ivptr, ivlen);
|
|
+ break;
|
|
+
|
|
+ case EVP_CIPH_CTR_MODE:
|
|
+ nblocks = (inl + cipher_ctx->blocksize - 1)
|
|
+ / cipher_ctx->blocksize;
|
|
+ do {
|
|
+ ivlen--;
|
|
+ nblocks += iv[ivlen];
|
|
+ iv[ivlen] = (uint8_t) nblocks;
|
|
+ nblocks >>= 8;
|
|
+ } while (ivlen);
|
|
+ break;
|
|
+
|
|
+ default: /* should not happen */
|
|
+ return 0;
|
|
+ }
|
|
+#endif
|
|
+
|
|
+ return 1;
|
|
+}
|
|
+
|
|
+static int ctr_do_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
+ const unsigned char *in, size_t inl)
|
|
+{
|
|
+ struct cipher_ctx *cipher_ctx =
|
|
+ (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
|
|
+ size_t nblocks, len;
|
|
+
|
|
+ /* initial partial block */
|
|
+ while (cipher_ctx->num && inl) {
|
|
+ (*out++) = *(in++) ^ cipher_ctx->partial[cipher_ctx->num];
|
|
+ --inl;
|
|
+ cipher_ctx->num = (cipher_ctx->num + 1) % cipher_ctx->blocksize;
|
|
+ }
|
|
+
|
|
+ /* full blocks */
|
|
+ if (inl > (unsigned int) cipher_ctx->blocksize) {
|
|
+ nblocks = inl/cipher_ctx->blocksize;
|
|
+ len = nblocks * cipher_ctx->blocksize;
|
|
+ if (cipher_do_cipher(ctx, out, in, len) < 1)
|
|
+ return 0;
|
|
+ inl -= len;
|
|
+ out += len;
|
|
+ in += len;
|
|
+ }
|
|
+
|
|
+ /* final partial block */
|
|
+ if (inl) {
|
|
+ memset(cipher_ctx->partial, 0, cipher_ctx->blocksize);
|
|
+ if (cipher_do_cipher(ctx, cipher_ctx->partial, cipher_ctx->partial,
|
|
+ cipher_ctx->blocksize) < 1)
|
|
+ return 0;
|
|
+ while (inl--) {
|
|
+ out[cipher_ctx->num] = in[cipher_ctx->num]
|
|
+ ^ cipher_ctx->partial[cipher_ctx->num];
|
|
+ cipher_ctx->num++;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ return 1;
|
|
+}
|
|
+
|
|
+static int cipher_ctrl(EVP_CIPHER_CTX *ctx, int type, int p1, void* p2)
|
|
+{
|
|
+ struct cipher_ctx *cipher_ctx =
|
|
+ (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
|
|
+ EVP_CIPHER_CTX *to_ctx = (EVP_CIPHER_CTX *)p2;
|
|
+ struct cipher_ctx *to_cipher_ctx;
|
|
+
|
|
+ switch (type) {
|
|
+
|
|
+ case EVP_CTRL_COPY:
|
|
+ if (cipher_ctx == NULL)
|
|
+ return 1;
|
|
+ /* when copying the context, a new session needs to be initialized */
|
|
+ to_cipher_ctx =
|
|
+ (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(to_ctx);
|
|
+ memset(&to_cipher_ctx->sess, 0, sizeof(to_cipher_ctx->sess));
|
|
+ return cipher_init(to_ctx, cipher_ctx->sess.key, EVP_CIPHER_CTX_iv(ctx),
|
|
+ (cipher_ctx->op == COP_ENCRYPT));
|
|
+
|
|
+ case EVP_CTRL_INIT:
|
|
+ memset(&cipher_ctx->sess, 0, sizeof(cipher_ctx->sess));
|
|
+ return 1;
|
|
+
|
|
+ default:
|
|
+ break;
|
|
+ }
|
|
+
|
|
+ return -1;
|
|
+}
|
|
+
|
|
+static int cipher_cleanup(EVP_CIPHER_CTX *ctx)
|
|
+{
|
|
+ struct cipher_ctx *cipher_ctx =
|
|
+ (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
|
|
+
|
|
+ return clean_devcrypto_session(&cipher_ctx->sess);
|
|
+}
|
|
+
|
|
+/*
|
|
+ * Keep tables of known nids, associated methods, selected ciphers, and driver
|
|
+ * info.
|
|
+ * Note that known_cipher_nids[] isn't necessarily indexed the same way as
|
|
+ * cipher_data[] above, which the other tables are.
|
|
+ */
|
|
+static int known_cipher_nids[OSSL_NELEM(cipher_data)];
|
|
+static int known_cipher_nids_amount = -1; /* -1 indicates not yet initialised */
|
|
+static EVP_CIPHER *known_cipher_methods[OSSL_NELEM(cipher_data)] = { NULL, };
|
|
+static int selected_ciphers[OSSL_NELEM(cipher_data)];
|
|
+static struct driver_info_st cipher_driver_info[OSSL_NELEM(cipher_data)];
|
|
+
|
|
+
|
|
+static int devcrypto_test_cipher(size_t cipher_data_index)
|
|
+{
|
|
+ return (cipher_driver_info[cipher_data_index].status == DEVCRYPTO_STATUS_USABLE
|
|
+ && selected_ciphers[cipher_data_index] == 1
|
|
+ && (cipher_driver_info[cipher_data_index].accelerated
|
|
+ == DEVCRYPTO_ACCELERATED
|
|
+ || use_softdrivers == DEVCRYPTO_USE_SOFTWARE
|
|
+ || (cipher_driver_info[cipher_data_index].accelerated
|
|
+ != DEVCRYPTO_NOT_ACCELERATED
|
|
+ && use_softdrivers == DEVCRYPTO_REJECT_SOFTWARE)));
|
|
+}
|
|
+
|
|
+static void prepare_cipher_methods(void)
|
|
+{
|
|
+ size_t i;
|
|
+ struct session_op sess;
|
|
+ unsigned long cipher_mode;
|
|
+#ifdef CIOCGSESSINFO
|
|
+ struct session_info_op siop;
|
|
+#endif
|
|
+
|
|
+ memset(&cipher_driver_info, 0, sizeof(cipher_driver_info));
|
|
+
|
|
+ memset(&sess, 0, sizeof(sess));
|
|
+ sess.key = (void *)"01234567890123456789012345678901234567890123456789";
|
|
+
|
|
+ for (i = 0, known_cipher_nids_amount = 0;
|
|
+ i < OSSL_NELEM(cipher_data); i++) {
|
|
+
|
|
+ selected_ciphers[i] = 1;
|
|
+ /*
|
|
+ * Check that the cipher is usable
|
|
+ */
|
|
+ sess.cipher = cipher_data[i].devcryptoid;
|
|
+ sess.keylen = cipher_data[i].keylen;
|
|
+ if (ioctl(cfd, CIOCGSESSION, &sess) < 0) {
|
|
+ cipher_driver_info[i].status = DEVCRYPTO_STATUS_NO_CIOCGSESSION;
|
|
+ continue;
|
|
+ }
|
|
+
|
|
+ cipher_mode = cipher_data[i].flags & EVP_CIPH_MODE;
|
|
+
|
|
+ if ((known_cipher_methods[i] =
|
|
+ EVP_CIPHER_meth_new(cipher_data[i].nid,
|
|
+ cipher_mode == EVP_CIPH_CTR_MODE ? 1 :
|
|
+ cipher_data[i].blocksize,
|
|
+ cipher_data[i].keylen)) == NULL
|
|
+ || !EVP_CIPHER_meth_set_iv_length(known_cipher_methods[i],
|
|
+ cipher_data[i].ivlen)
|
|
+ || !EVP_CIPHER_meth_set_flags(known_cipher_methods[i],
|
|
+ cipher_data[i].flags
|
|
+ | EVP_CIPH_CUSTOM_COPY
|
|
+ | EVP_CIPH_CTRL_INIT
|
|
+ | EVP_CIPH_FLAG_DEFAULT_ASN1)
|
|
+ || !EVP_CIPHER_meth_set_init(known_cipher_methods[i], cipher_init)
|
|
+ || !EVP_CIPHER_meth_set_do_cipher(known_cipher_methods[i],
|
|
+ cipher_mode == EVP_CIPH_CTR_MODE ?
|
|
+ ctr_do_cipher :
|
|
+ cipher_do_cipher)
|
|
+ || !EVP_CIPHER_meth_set_ctrl(known_cipher_methods[i], cipher_ctrl)
|
|
+ || !EVP_CIPHER_meth_set_cleanup(known_cipher_methods[i],
|
|
+ cipher_cleanup)
|
|
+ || !EVP_CIPHER_meth_set_impl_ctx_size(known_cipher_methods[i],
|
|
+ sizeof(struct cipher_ctx))) {
|
|
+ cipher_driver_info[i].status = DEVCRYPTO_STATUS_FAILURE;
|
|
+ EVP_CIPHER_meth_free(known_cipher_methods[i]);
|
|
+ known_cipher_methods[i] = NULL;
|
|
+ } else {
|
|
+ cipher_driver_info[i].status = DEVCRYPTO_STATUS_USABLE;
|
|
+#ifdef CIOCGSESSINFO
|
|
+ siop.ses = sess.ses;
|
|
+ if (ioctl(cfd, CIOCGSESSINFO, &siop) < 0) {
|
|
+ cipher_driver_info[i].accelerated = DEVCRYPTO_ACCELERATION_UNKNOWN;
|
|
+ } else {
|
|
+ cipher_driver_info[i].driver_name =
|
|
+ OPENSSL_strndup(siop.cipher_info.cra_driver_name,
|
|
+ CRYPTODEV_MAX_ALG_NAME);
|
|
+ if (!(siop.flags & SIOP_FLAG_KERNEL_DRIVER_ONLY))
|
|
+ cipher_driver_info[i].accelerated = DEVCRYPTO_NOT_ACCELERATED;
|
|
+ else
|
|
+ cipher_driver_info[i].accelerated = DEVCRYPTO_ACCELERATED;
|
|
+ }
|
|
+#endif /* CIOCGSESSINFO */
|
|
+ }
|
|
+ ioctl(cfd, CIOCFSESSION, &sess.ses);
|
|
+ if (devcrypto_test_cipher(i)) {
|
|
+ known_cipher_nids[known_cipher_nids_amount++] =
|
|
+ cipher_data[i].nid;
|
|
+ }
|
|
+ }
|
|
+}
|
|
+
|
|
+static void rebuild_known_cipher_nids(ENGINE *e)
|
|
+{
|
|
+ size_t i;
|
|
+
|
|
+ for (i = 0, known_cipher_nids_amount = 0; i < OSSL_NELEM(cipher_data); i++) {
|
|
+ if (devcrypto_test_cipher(i))
|
|
+ known_cipher_nids[known_cipher_nids_amount++] = cipher_data[i].nid;
|
|
+ }
|
|
+ ENGINE_unregister_ciphers(e);
|
|
+ ENGINE_register_ciphers(e);
|
|
+}
|
|
+
|
|
+static const EVP_CIPHER *get_cipher_method(int nid)
|
|
+{
|
|
+ size_t i = get_cipher_data_index(nid);
|
|
+
|
|
+ if (i == (size_t)-1)
|
|
+ return NULL;
|
|
+ return known_cipher_methods[i];
|
|
+}
|
|
+
|
|
+static int get_cipher_nids(const int **nids)
|
|
+{
|
|
+ *nids = known_cipher_nids;
|
|
+ return known_cipher_nids_amount;
|
|
+}
|
|
+
|
|
+static void destroy_cipher_method(int nid)
|
|
+{
|
|
+ size_t i = get_cipher_data_index(nid);
|
|
+
|
|
+ EVP_CIPHER_meth_free(known_cipher_methods[i]);
|
|
+ known_cipher_methods[i] = NULL;
|
|
+}
|
|
+
|
|
+static void destroy_all_cipher_methods(void)
|
|
+{
|
|
+ size_t i;
|
|
+
|
|
+ for (i = 0; i < OSSL_NELEM(cipher_data); i++) {
|
|
+ destroy_cipher_method(cipher_data[i].nid);
|
|
+ OPENSSL_free(cipher_driver_info[i].driver_name);
|
|
+ cipher_driver_info[i].driver_name = NULL;
|
|
+ }
|
|
+}
|
|
+
|
|
+static int devcrypto_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
|
|
+ const int **nids, int nid)
|
|
+{
|
|
+ if (cipher == NULL)
|
|
+ return get_cipher_nids(nids);
|
|
+
|
|
+ *cipher = get_cipher_method(nid);
|
|
+
|
|
+ return *cipher != NULL;
|
|
+}
|
|
+
|
|
+static void devcrypto_select_all_ciphers(int *cipher_list)
|
|
+{
|
|
+ size_t i;
|
|
+
|
|
+ for (i = 0; i < OSSL_NELEM(cipher_data); i++)
|
|
+ cipher_list[i] = 1;
|
|
+}
|
|
+
|
|
+static int cryptodev_select_cipher_cb(const char *str, int len, void *usr)
|
|
+{
|
|
+ int *cipher_list = (int *)usr;
|
|
+ char *name;
|
|
+ const EVP_CIPHER *EVP;
|
|
+ size_t i;
|
|
+
|
|
+ if (len == 0)
|
|
+ return 1;
|
|
+ if (usr == NULL || (name = OPENSSL_strndup(str, len)) == NULL)
|
|
+ return 0;
|
|
+ EVP = EVP_get_cipherbyname(name);
|
|
+ if (EVP == NULL)
|
|
+ fprintf(stderr, "devcrypto: unknown cipher %s\n", name);
|
|
+ else if ((i = find_cipher_data_index(EVP_CIPHER_nid(EVP))) != (size_t)-1)
|
|
+ cipher_list[i] = 1;
|
|
+ else
|
|
+ fprintf(stderr, "devcrypto: cipher %s not available\n", name);
|
|
+ OPENSSL_free(name);
|
|
+ return 1;
|
|
+}
|
|
+
|
|
+static void dump_cipher_info(void)
|
|
+{
|
|
+ size_t i;
|
|
+ const char *name;
|
|
+
|
|
+ fprintf (stderr, "Information about ciphers supported by the /dev/crypto"
|
|
+ " engine:\n");
|
|
+#ifndef CIOCGSESSINFO
|
|
+ fprintf(stderr, "CIOCGSESSINFO (session info call) unavailable\n");
|
|
+#endif
|
|
+ for (i = 0; i < OSSL_NELEM(cipher_data); i++) {
|
|
+ name = OBJ_nid2sn(cipher_data[i].nid);
|
|
+ fprintf (stderr, "Cipher %s, NID=%d, /dev/crypto info: id=%d, ",
|
|
+ name ? name : "unknown", cipher_data[i].nid,
|
|
+ cipher_data[i].devcryptoid);
|
|
+ if (cipher_driver_info[i].status == DEVCRYPTO_STATUS_NO_CIOCGSESSION ) {
|
|
+ fprintf (stderr, "CIOCGSESSION (session open call) failed\n");
|
|
+ continue;
|
|
+ }
|
|
+ fprintf (stderr, "driver=%s ", cipher_driver_info[i].driver_name ?
|
|
+ cipher_driver_info[i].driver_name : "unknown");
|
|
+ if (cipher_driver_info[i].accelerated == DEVCRYPTO_ACCELERATED)
|
|
+ fprintf(stderr, "(hw accelerated)");
|
|
+ else if (cipher_driver_info[i].accelerated == DEVCRYPTO_NOT_ACCELERATED)
|
|
+ fprintf(stderr, "(software)");
|
|
+ else
|
|
+ fprintf(stderr, "(acceleration status unknown)");
|
|
+ if (cipher_driver_info[i].status == DEVCRYPTO_STATUS_FAILURE)
|
|
+ fprintf (stderr, ". Cipher setup failed");
|
|
+ fprintf(stderr, "\n");
|
|
+ }
|
|
+ fprintf(stderr, "\n");
|
|
+}
|
|
+
|
|
+/*
|
|
+ * We only support digests if the cryptodev implementation supports multiple
|
|
+ * data updates and session copying. Otherwise, we would be forced to maintain
|
|
+ * a cache, which is perilous if there's a lot of data coming in (if someone
|
|
+ * wants to checksum an OpenSSL tarball, for example).
|
|
+ */
|
|
+#if defined(CIOCCPHASH) && defined(COP_FLAG_UPDATE) && defined(COP_FLAG_FINAL)
|
|
+#define IMPLEMENT_DIGEST
|
|
+
|
|
+/******************************************************************************
|
|
+ *
|
|
+ * Digests
|
|
+ *
|
|
+ * Because they all do the same basic operation, we have only one set of
|
|
+ * method functions for them all to share, and a mapping table between
|
|
+ * NIDs and cryptodev IDs, with all the necessary size data.
|
|
+ *
|
|
+ *****/
|
|
+
|
|
+struct digest_ctx {
|
|
+ struct session_op sess;
|
|
+ /* This signals that the init function was called, not that it succeeded. */
|
|
+ int init_called;
|
|
+ unsigned char digest_res[HASH_MAX_LEN];
|
|
+};
|
|
+
|
|
+static const struct digest_data_st {
|
|
+ int nid;
|
|
+ int blocksize;
|
|
+ int digestlen;
|
|
+ int devcryptoid;
|
|
+} digest_data[] = {
|
|
+#ifndef OPENSSL_NO_MD5
|
|
+ { NID_md5, /* MD5_CBLOCK */ 64, 16, CRYPTO_MD5 },
|
|
+#endif
|
|
+ { NID_sha1, SHA_CBLOCK, 20, CRYPTO_SHA1 },
|
|
+#ifndef OPENSSL_NO_RMD160
|
|
+# if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_RIPEMD160)
|
|
+ { NID_ripemd160, /* RIPEMD160_CBLOCK */ 64, 20, CRYPTO_RIPEMD160 },
|
|
+# endif
|
|
+#endif
|
|
+#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_SHA2_224)
|
|
+ { NID_sha224, SHA256_CBLOCK, 224 / 8, CRYPTO_SHA2_224 },
|
|
+#endif
|
|
+#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_SHA2_256)
|
|
+ { NID_sha256, SHA256_CBLOCK, 256 / 8, CRYPTO_SHA2_256 },
|
|
+#endif
|
|
+#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_SHA2_384)
|
|
+ { NID_sha384, SHA512_CBLOCK, 384 / 8, CRYPTO_SHA2_384 },
|
|
+#endif
|
|
+#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_SHA2_512)
|
|
+ { NID_sha512, SHA512_CBLOCK, 512 / 8, CRYPTO_SHA2_512 },
|
|
+#endif
|
|
+};
|
|
+
|
|
+static size_t find_digest_data_index(int nid)
|
|
+{
|
|
+ size_t i;
|
|
+
|
|
+ for (i = 0; i < OSSL_NELEM(digest_data); i++)
|
|
+ if (nid == digest_data[i].nid)
|
|
+ return i;
|
|
+ return (size_t)-1;
|
|
+}
|
|
+
|
|
+static size_t get_digest_data_index(int nid)
|
|
+{
|
|
+ size_t i = find_digest_data_index(nid);
|
|
+
|
|
+ if (i != (size_t)-1)
|
|
+ return i;
|
|
+
|
|
+ /*
|
|
+ * Code further down must make sure that only NIDs in the table above
|
|
+ * are used. If any other NID reaches this function, there's a grave
|
|
+ * coding error further down.
|
|
+ */
|
|
+ assert("Code that never should be reached" == NULL);
|
|
+ return -1;
|
|
+}
|
|
+
|
|
+static const struct digest_data_st *get_digest_data(int nid)
|
|
+{
|
|
+ return &digest_data[get_digest_data_index(nid)];
|
|
+}
|
|
+
|
|
+/*
|
|
+ * Following are the five necessary functions to map OpenSSL functionality
|
|
+ * with cryptodev: init, update, final, cleanup, and copy.
|
|
+ */
|
|
+
|
|
+static int digest_init(EVP_MD_CTX *ctx)
|
|
+{
|
|
+ struct digest_ctx *digest_ctx =
|
|
+ (struct digest_ctx *)EVP_MD_CTX_md_data(ctx);
|
|
+ const struct digest_data_st *digest_d =
|
|
+ get_digest_data(EVP_MD_CTX_type(ctx));
|
|
+
|
|
+ digest_ctx->init_called = 1;
|
|
+
|
|
+ memset(&digest_ctx->sess, 0, sizeof(digest_ctx->sess));
|
|
+ digest_ctx->sess.mac = digest_d->devcryptoid;
|
|
+ if (ioctl(cfd, CIOCGSESSION, &digest_ctx->sess) < 0) {
|
|
+ SYSerr(SYS_F_IOCTL, errno);
|
|
+ return 0;
|
|
+ }
|
|
+ return 1;
|
|
+}
|
|
+
|
|
+static int digest_op(struct digest_ctx *ctx, const void *src, size_t srclen,
|
|
+ void *res, unsigned int flags)
|
|
+{
|
|
+ struct crypt_op cryp;
|
|
+
|
|
+ memset(&cryp, 0, sizeof(cryp));
|
|
+ cryp.ses = ctx->sess.ses;
|
|
+ cryp.len = srclen;
|
|
+ cryp.src = (void *)src;
|
|
+ cryp.dst = NULL;
|
|
+ cryp.mac = res;
|
|
+ cryp.flags = flags;
|
|
+ return ioctl(cfd, CIOCCRYPT, &cryp);
|
|
+}
|
|
+
|
|
+static int digest_update(EVP_MD_CTX *ctx, const void *data, size_t count)
|
|
+{
|
|
+ struct digest_ctx *digest_ctx =
|
|
+ (struct digest_ctx *)EVP_MD_CTX_md_data(ctx);
|
|
+
|
|
+ if (count == 0)
|
|
+ return 1;
|
|
+
|
|
+ if (digest_ctx == NULL)
|
|
+ return 0;
|
|
+
|
|
+ if (EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_ONESHOT)) {
|
|
+ if (digest_op(digest_ctx, data, count, digest_ctx->digest_res, 0) >= 0)
|
|
+ return 1;
|
|
+ } else if (digest_op(digest_ctx, data, count, NULL, COP_FLAG_UPDATE) >= 0) {
|
|
+ return 1;
|
|
+ }
|
|
+
|
|
+ SYSerr(SYS_F_IOCTL, errno);
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int digest_final(EVP_MD_CTX *ctx, unsigned char *md)
|
|
+{
|
|
+ struct digest_ctx *digest_ctx =
|
|
+ (struct digest_ctx *)EVP_MD_CTX_md_data(ctx);
|
|
+
|
|
+ if (md == NULL || digest_ctx == NULL)
|
|
+ return 0;
|
|
+
|
|
+ if (EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_ONESHOT)) {
|
|
+ memcpy(md, digest_ctx->digest_res, EVP_MD_CTX_size(ctx));
|
|
+ } else if (digest_op(digest_ctx, NULL, 0, md, COP_FLAG_FINAL) < 0) {
|
|
+ SYSerr(SYS_F_IOCTL, errno);
|
|
+ return 0;
|
|
+ }
|
|
+
|
|
+ return 1;
|
|
+}
|
|
+
|
|
+static int digest_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
|
|
+{
|
|
+ struct digest_ctx *digest_from =
|
|
+ (struct digest_ctx *)EVP_MD_CTX_md_data(from);
|
|
+ struct digest_ctx *digest_to =
|
|
+ (struct digest_ctx *)EVP_MD_CTX_md_data(to);
|
|
+ struct cphash_op cphash;
|
|
+
|
|
+ if (digest_from == NULL || digest_from->init_called != 1)
|
|
+ return 1;
|
|
+
|
|
+ if (!digest_init(to)) {
|
|
+ SYSerr(SYS_F_IOCTL, errno);
|
|
+ return 0;
|
|
+ }
|
|
+
|
|
+ cphash.src_ses = digest_from->sess.ses;
|
|
+ cphash.dst_ses = digest_to->sess.ses;
|
|
+ if (ioctl(cfd, CIOCCPHASH, &cphash) < 0) {
|
|
+ SYSerr(SYS_F_IOCTL, errno);
|
|
+ return 0;
|
|
+ }
|
|
+ return 1;
|
|
+}
|
|
+
|
|
+static int digest_cleanup(EVP_MD_CTX *ctx)
|
|
+{
|
|
+ struct digest_ctx *digest_ctx =
|
|
+ (struct digest_ctx *)EVP_MD_CTX_md_data(ctx);
|
|
+
|
|
+ if (digest_ctx == NULL)
|
|
+ return 1;
|
|
+
|
|
+ return clean_devcrypto_session(&digest_ctx->sess);
|
|
+}
|
|
+
|
|
+/*
|
|
+ * Keep tables of known nids, associated methods, selected digests, and
|
|
+ * driver info.
|
|
+ * Note that known_digest_nids[] isn't necessarily indexed the same way as
|
|
+ * digest_data[] above, which the other tables are.
|
|
+ */
|
|
+static int known_digest_nids[OSSL_NELEM(digest_data)];
|
|
+static int known_digest_nids_amount = -1; /* -1 indicates not yet initialised */
|
|
+static EVP_MD *known_digest_methods[OSSL_NELEM(digest_data)] = { NULL, };
|
|
+static int selected_digests[OSSL_NELEM(digest_data)];
|
|
+static struct driver_info_st digest_driver_info[OSSL_NELEM(digest_data)];
|
|
+
|
|
+static int devcrypto_test_digest(size_t digest_data_index)
|
|
+{
|
|
+ return (digest_driver_info[digest_data_index].status == DEVCRYPTO_STATUS_USABLE
|
|
+ && selected_digests[digest_data_index] == 1
|
|
+ && (digest_driver_info[digest_data_index].accelerated
|
|
+ == DEVCRYPTO_ACCELERATED
|
|
+ || use_softdrivers == DEVCRYPTO_USE_SOFTWARE
|
|
+ || (digest_driver_info[digest_data_index].accelerated
|
|
+ != DEVCRYPTO_NOT_ACCELERATED
|
|
+ && use_softdrivers == DEVCRYPTO_REJECT_SOFTWARE)));
|
|
+}
|
|
+
|
|
+static void rebuild_known_digest_nids(ENGINE *e)
|
|
+{
|
|
+ size_t i;
|
|
+
|
|
+ for (i = 0, known_digest_nids_amount = 0; i < OSSL_NELEM(digest_data); i++) {
|
|
+ if (devcrypto_test_digest(i))
|
|
+ known_digest_nids[known_digest_nids_amount++] = digest_data[i].nid;
|
|
+ }
|
|
+ ENGINE_unregister_digests(e);
|
|
+ ENGINE_register_digests(e);
|
|
+}
|
|
+
|
|
+static void prepare_digest_methods(void)
|
|
+{
|
|
+ size_t i;
|
|
+ struct session_op sess1, sess2;
|
|
+#ifdef CIOCGSESSINFO
|
|
+ struct session_info_op siop;
|
|
+#endif
|
|
+ struct cphash_op cphash;
|
|
+
|
|
+ memset(&digest_driver_info, 0, sizeof(digest_driver_info));
|
|
+
|
|
+ memset(&sess1, 0, sizeof(sess1));
|
|
+ memset(&sess2, 0, sizeof(sess2));
|
|
+
|
|
+ for (i = 0, known_digest_nids_amount = 0; i < OSSL_NELEM(digest_data);
|
|
+ i++) {
|
|
+
|
|
+ selected_digests[i] = 1;
|
|
+
|
|
+ /*
|
|
+ * Check that the digest is usable
|
|
+ */
|
|
+ sess1.mac = digest_data[i].devcryptoid;
|
|
+ sess2.ses = 0;
|
|
+ if (ioctl(cfd, CIOCGSESSION, &sess1) < 0) {
|
|
+ digest_driver_info[i].status = DEVCRYPTO_STATUS_NO_CIOCGSESSION;
|
|
+ goto finish;
|
|
+ }
|
|
+
|
|
+#ifdef CIOCGSESSINFO
|
|
+ /* gather hardware acceleration info from the driver */
|
|
+ siop.ses = sess1.ses;
|
|
+ if (ioctl(cfd, CIOCGSESSINFO, &siop) < 0) {
|
|
+ digest_driver_info[i].accelerated = DEVCRYPTO_ACCELERATION_UNKNOWN;
|
|
+ } else {
|
|
+ digest_driver_info[i].driver_name =
|
|
+ OPENSSL_strndup(siop.hash_info.cra_driver_name,
|
|
+ CRYPTODEV_MAX_ALG_NAME);
|
|
+ if (siop.flags & SIOP_FLAG_KERNEL_DRIVER_ONLY)
|
|
+ digest_driver_info[i].accelerated = DEVCRYPTO_ACCELERATED;
|
|
+ else
|
|
+ digest_driver_info[i].accelerated = DEVCRYPTO_NOT_ACCELERATED;
|
|
+ }
|
|
+#endif
|
|
+
|
|
+ /* digest must be capable of hash state copy */
|
|
+ sess2.mac = sess1.mac;
|
|
+ if (ioctl(cfd, CIOCGSESSION, &sess2) < 0) {
|
|
+ digest_driver_info[i].status = DEVCRYPTO_STATUS_FAILURE;
|
|
+ goto finish;
|
|
+ }
|
|
+ cphash.src_ses = sess1.ses;
|
|
+ cphash.dst_ses = sess2.ses;
|
|
+ if (ioctl(cfd, CIOCCPHASH, &cphash) < 0) {
|
|
+ digest_driver_info[i].status = DEVCRYPTO_STATUS_NO_CIOCCPHASH;
|
|
+ goto finish;
|
|
+ }
|
|
+ if ((known_digest_methods[i] = EVP_MD_meth_new(digest_data[i].nid,
|
|
+ NID_undef)) == NULL
|
|
+ || !EVP_MD_meth_set_input_blocksize(known_digest_methods[i],
|
|
+ digest_data[i].blocksize)
|
|
+ || !EVP_MD_meth_set_result_size(known_digest_methods[i],
|
|
+ digest_data[i].digestlen)
|
|
+ || !EVP_MD_meth_set_init(known_digest_methods[i], digest_init)
|
|
+ || !EVP_MD_meth_set_update(known_digest_methods[i], digest_update)
|
|
+ || !EVP_MD_meth_set_final(known_digest_methods[i], digest_final)
|
|
+ || !EVP_MD_meth_set_copy(known_digest_methods[i], digest_copy)
|
|
+ || !EVP_MD_meth_set_cleanup(known_digest_methods[i], digest_cleanup)
|
|
+ || !EVP_MD_meth_set_app_datasize(known_digest_methods[i],
|
|
+ sizeof(struct digest_ctx))) {
|
|
+ digest_driver_info[i].status = DEVCRYPTO_STATUS_FAILURE;
|
|
+ EVP_MD_meth_free(known_digest_methods[i]);
|
|
+ known_digest_methods[i] = NULL;
|
|
+ goto finish;
|
|
+ }
|
|
+ digest_driver_info[i].status = DEVCRYPTO_STATUS_USABLE;
|
|
+finish:
|
|
+ ioctl(cfd, CIOCFSESSION, &sess1.ses);
|
|
+ if (sess2.ses != 0)
|
|
+ ioctl(cfd, CIOCFSESSION, &sess2.ses);
|
|
+ if (devcrypto_test_digest(i))
|
|
+ known_digest_nids[known_digest_nids_amount++] = digest_data[i].nid;
|
|
+ }
|
|
+}
|
|
+
|
|
+static const EVP_MD *get_digest_method(int nid)
|
|
+{
|
|
+ size_t i = get_digest_data_index(nid);
|
|
+
|
|
+ if (i == (size_t)-1)
|
|
+ return NULL;
|
|
+ return known_digest_methods[i];
|
|
+}
|
|
+
|
|
+static int get_digest_nids(const int **nids)
|
|
+{
|
|
+ *nids = known_digest_nids;
|
|
+ return known_digest_nids_amount;
|
|
+}
|
|
+
|
|
+static void destroy_digest_method(int nid)
|
|
+{
|
|
+ size_t i = get_digest_data_index(nid);
|
|
+
|
|
+ EVP_MD_meth_free(known_digest_methods[i]);
|
|
+ known_digest_methods[i] = NULL;
|
|
+}
|
|
+
|
|
+static void destroy_all_digest_methods(void)
|
|
+{
|
|
+ size_t i;
|
|
+
|
|
+ for (i = 0; i < OSSL_NELEM(digest_data); i++) {
|
|
+ destroy_digest_method(digest_data[i].nid);
|
|
+ OPENSSL_free(digest_driver_info[i].driver_name);
|
|
+ digest_driver_info[i].driver_name = NULL;
|
|
+ }
|
|
+}
|
|
+
|
|
+static int devcrypto_digests(ENGINE *e, const EVP_MD **digest,
|
|
+ const int **nids, int nid)
|
|
+{
|
|
+ if (digest == NULL)
|
|
+ return get_digest_nids(nids);
|
|
+
|
|
+ *digest = get_digest_method(nid);
|
|
+
|
|
+ return *digest != NULL;
|
|
+}
|
|
+
|
|
+static void devcrypto_select_all_digests(int *digest_list)
|
|
+{
|
|
+ size_t i;
|
|
+
|
|
+ for (i = 0; i < OSSL_NELEM(digest_data); i++)
|
|
+ digest_list[i] = 1;
|
|
+}
|
|
+
|
|
+static int cryptodev_select_digest_cb(const char *str, int len, void *usr)
|
|
+{
|
|
+ int *digest_list = (int *)usr;
|
|
+ char *name;
|
|
+ const EVP_MD *EVP;
|
|
+ size_t i;
|
|
+
|
|
+ if (len == 0)
|
|
+ return 1;
|
|
+ if (usr == NULL || (name = OPENSSL_strndup(str, len)) == NULL)
|
|
+ return 0;
|
|
+ EVP = EVP_get_digestbyname(name);
|
|
+ if (EVP == NULL)
|
|
+ fprintf(stderr, "devcrypto: unknown digest %s\n", name);
|
|
+ else if ((i = find_digest_data_index(EVP_MD_type(EVP))) != (size_t)-1)
|
|
+ digest_list[i] = 1;
|
|
+ else
|
|
+ fprintf(stderr, "devcrypto: digest %s not available\n", name);
|
|
+ OPENSSL_free(name);
|
|
+ return 1;
|
|
+}
|
|
+
|
|
+static void dump_digest_info(void)
|
|
+{
|
|
+ size_t i;
|
|
+ const char *name;
|
|
+
|
|
+ fprintf (stderr, "Information about digests supported by the /dev/crypto"
|
|
+ " engine:\n");
|
|
+#ifndef CIOCGSESSINFO
|
|
+ fprintf(stderr, "CIOCGSESSINFO (session info call) unavailable\n");
|
|
+#endif
|
|
+
|
|
+ for (i = 0; i < OSSL_NELEM(digest_data); i++) {
|
|
+ name = OBJ_nid2sn(digest_data[i].nid);
|
|
+ fprintf (stderr, "Digest %s, NID=%d, /dev/crypto info: id=%d, driver=%s",
|
|
+ name ? name : "unknown", digest_data[i].nid,
|
|
+ digest_data[i].devcryptoid,
|
|
+ digest_driver_info[i].driver_name ? digest_driver_info[i].driver_name : "unknown");
|
|
+ if (digest_driver_info[i].status == DEVCRYPTO_STATUS_NO_CIOCGSESSION) {
|
|
+ fprintf (stderr, ". CIOCGSESSION (session open) failed\n");
|
|
+ continue;
|
|
+ }
|
|
+ if (digest_driver_info[i].accelerated == DEVCRYPTO_ACCELERATED)
|
|
+ fprintf(stderr, " (hw accelerated)");
|
|
+ else if (digest_driver_info[i].accelerated == DEVCRYPTO_NOT_ACCELERATED)
|
|
+ fprintf(stderr, " (software)");
|
|
+ else
|
|
+ fprintf(stderr, " (acceleration status unknown)");
|
|
+ if (cipher_driver_info[i].status == DEVCRYPTO_STATUS_FAILURE)
|
|
+ fprintf (stderr, ". Cipher setup failed\n");
|
|
+ else if (digest_driver_info[i].status == DEVCRYPTO_STATUS_NO_CIOCCPHASH)
|
|
+ fprintf(stderr, ", CIOCCPHASH failed\n");
|
|
+ else
|
|
+ fprintf(stderr, ", CIOCCPHASH capable\n");
|
|
+ }
|
|
+ fprintf(stderr, "\n");
|
|
+}
|
|
+
|
|
+#endif
|
|
+
|
|
+/******************************************************************************
|
|
+ *
|
|
+ * CONTROL COMMANDS
|
|
+ *
|
|
+ *****/
|
|
+
|
|
+#define DEVCRYPTO_CMD_USE_SOFTDRIVERS ENGINE_CMD_BASE
|
|
+#define DEVCRYPTO_CMD_CIPHERS (ENGINE_CMD_BASE + 1)
|
|
+#define DEVCRYPTO_CMD_DIGESTS (ENGINE_CMD_BASE + 2)
|
|
+#define DEVCRYPTO_CMD_DUMP_INFO (ENGINE_CMD_BASE + 3)
|
|
+
|
|
+/* Helper macros for CPP string composition */
|
|
+#ifndef OPENSSL_MSTR
|
|
+# define OPENSSL_MSTR_HELPER(x) #x
|
|
+# define OPENSSL_MSTR(x) OPENSSL_MSTR_HELPER(x)
|
|
+#endif
|
|
+
|
|
+static const ENGINE_CMD_DEFN devcrypto_cmds[] = {
|
|
+#ifdef CIOCGSESSINFO
|
|
+ {DEVCRYPTO_CMD_USE_SOFTDRIVERS,
|
|
+ "USE_SOFTDRIVERS",
|
|
+ "specifies whether to use software (not accelerated) drivers ("
|
|
+ OPENSSL_MSTR(DEVCRYPTO_REQUIRE_ACCELERATED) "=use only accelerated drivers, "
|
|
+ OPENSSL_MSTR(DEVCRYPTO_USE_SOFTWARE) "=allow all drivers, "
|
|
+ OPENSSL_MSTR(DEVCRYPTO_REJECT_SOFTWARE)
|
|
+ "=use if acceleration can't be determined) [default="
|
|
+ OPENSSL_MSTR(DEVCRYPTO_DEFAULT_USE_SOFTDRIVERS) "]",
|
|
+ ENGINE_CMD_FLAG_NUMERIC},
|
|
+#endif
|
|
+
|
|
+ {DEVCRYPTO_CMD_CIPHERS,
|
|
+ "CIPHERS",
|
|
+ "either ALL, NONE, or a comma-separated list of ciphers to enable [default=ALL]",
|
|
+ ENGINE_CMD_FLAG_STRING},
|
|
+
|
|
+#ifdef IMPLEMENT_DIGEST
|
|
+ {DEVCRYPTO_CMD_DIGESTS,
|
|
+ "DIGESTS",
|
|
+ "either ALL, NONE, or a comma-separated list of digests to enable [default=ALL]",
|
|
+ ENGINE_CMD_FLAG_STRING},
|
|
+#endif
|
|
+
|
|
+ {DEVCRYPTO_CMD_DUMP_INFO,
|
|
+ "DUMP_INFO",
|
|
+ "dump info about each algorithm to stderr; use 'openssl engine -pre DUMP_INFO devcrypto'",
|
|
+ ENGINE_CMD_FLAG_NO_INPUT},
|
|
+
|
|
+ {0, NULL, NULL, 0}
|
|
+};
|
|
+
|
|
+static int devcrypto_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) (void))
|
|
+{
|
|
+ int *new_list;
|
|
+ switch (cmd) {
|
|
+#ifdef CIOCGSESSINFO
|
|
+ case DEVCRYPTO_CMD_USE_SOFTDRIVERS:
|
|
+ switch (i) {
|
|
+ case DEVCRYPTO_REQUIRE_ACCELERATED:
|
|
+ case DEVCRYPTO_USE_SOFTWARE:
|
|
+ case DEVCRYPTO_REJECT_SOFTWARE:
|
|
+ break;
|
|
+ default:
|
|
+ fprintf(stderr, "devcrypto: invalid value (%ld) for USE_SOFTDRIVERS\n", i);
|
|
+ return 0;
|
|
+ }
|
|
+ if (use_softdrivers == i)
|
|
+ return 1;
|
|
+ use_softdrivers = i;
|
|
+#ifdef IMPLEMENT_DIGEST
|
|
+ rebuild_known_digest_nids(e);
|
|
+#endif
|
|
+ rebuild_known_cipher_nids(e);
|
|
+ return 1;
|
|
+#endif /* CIOCGSESSINFO */
|
|
+
|
|
+ case DEVCRYPTO_CMD_CIPHERS:
|
|
+ if (p == NULL)
|
|
+ return 1;
|
|
+ if (strcasecmp((const char *)p, "ALL") == 0) {
|
|
+ devcrypto_select_all_ciphers(selected_ciphers);
|
|
+ } else if (strcasecmp((const char*)p, "NONE") == 0) {
|
|
+ memset(selected_ciphers, 0, sizeof(selected_ciphers));
|
|
+ } else {
|
|
+ new_list=OPENSSL_zalloc(sizeof(selected_ciphers));
|
|
+ if (!CONF_parse_list(p, ',', 1, cryptodev_select_cipher_cb, new_list)) {
|
|
+ OPENSSL_free(new_list);
|
|
+ return 0;
|
|
+ }
|
|
+ memcpy(selected_ciphers, new_list, sizeof(selected_ciphers));
|
|
+ OPENSSL_free(new_list);
|
|
+ }
|
|
+ rebuild_known_cipher_nids(e);
|
|
+ return 1;
|
|
+
|
|
+#ifdef IMPLEMENT_DIGEST
|
|
+ case DEVCRYPTO_CMD_DIGESTS:
|
|
+ if (p == NULL)
|
|
+ return 1;
|
|
+ if (strcasecmp((const char *)p, "ALL") == 0) {
|
|
+ devcrypto_select_all_digests(selected_digests);
|
|
+ } else if (strcasecmp((const char*)p, "NONE") == 0) {
|
|
+ memset(selected_digests, 0, sizeof(selected_digests));
|
|
+ } else {
|
|
+ new_list=OPENSSL_zalloc(sizeof(selected_digests));
|
|
+ if (!CONF_parse_list(p, ',', 1, cryptodev_select_digest_cb, new_list)) {
|
|
+ OPENSSL_free(new_list);
|
|
+ return 0;
|
|
+ }
|
|
+ memcpy(selected_digests, new_list, sizeof(selected_digests));
|
|
+ OPENSSL_free(new_list);
|
|
+ }
|
|
+ rebuild_known_digest_nids(e);
|
|
+ return 1;
|
|
+#endif /* IMPLEMENT_DIGEST */
|
|
+
|
|
+ case DEVCRYPTO_CMD_DUMP_INFO:
|
|
+ dump_cipher_info();
|
|
+#ifdef IMPLEMENT_DIGEST
|
|
+ dump_digest_info();
|
|
+#endif
|
|
+ return 1;
|
|
+
|
|
+ default:
|
|
+ break;
|
|
+ }
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+/******************************************************************************
|
|
+ *
|
|
+ * LOAD / UNLOAD
|
|
+ *
|
|
+ *****/
|
|
+
|
|
+/*
|
|
+ * Opens /dev/crypto
|
|
+ */
|
|
+static int open_devcrypto(void)
|
|
+{
|
|
+ if (cfd >= 0)
|
|
+ return 1;
|
|
+
|
|
+ if ((cfd = open("/dev/crypto", O_RDWR, 0)) < 0) {
|
|
+#ifndef ENGINE_DEVCRYPTO_DEBUG
|
|
+ if (errno != ENOENT)
|
|
+#endif
|
|
+ fprintf(stderr, "Could not open /dev/crypto: %s\n", strerror(errno));
|
|
+ return 0;
|
|
+ }
|
|
+
|
|
+ return 1;
|
|
+}
|
|
+
|
|
+static int close_devcrypto(void)
|
|
+{
|
|
+ int ret;
|
|
+
|
|
+ if (cfd < 0)
|
|
+ return 1;
|
|
+ ret = close(cfd);
|
|
+ cfd = -1;
|
|
+ if (ret != 0) {
|
|
+ fprintf(stderr, "Error closing /dev/crypto: %s\n", strerror(errno));
|
|
+ return 0;
|
|
+ }
|
|
+ return 1;
|
|
+}
|
|
+
|
|
+static int devcrypto_unload(ENGINE *e)
|
|
+{
|
|
+ destroy_all_cipher_methods();
|
|
+#ifdef IMPLEMENT_DIGEST
|
|
+ destroy_all_digest_methods();
|
|
+#endif
|
|
+
|
|
+ close_devcrypto();
|
|
+
|
|
+ return 1;
|
|
+}
|
|
+
|
|
+static int bind_devcrypto(ENGINE *e) {
|
|
+
|
|
+ if (!ENGINE_set_id(e, engine_devcrypto_id)
|
|
+ || !ENGINE_set_name(e, "/dev/crypto engine")
|
|
+ || !ENGINE_set_destroy_function(e, devcrypto_unload)
|
|
+ || !ENGINE_set_cmd_defns(e, devcrypto_cmds)
|
|
+ || !ENGINE_set_ctrl_function(e, devcrypto_ctrl))
|
|
+ return 0;
|
|
+
|
|
+ prepare_cipher_methods();
|
|
+#ifdef IMPLEMENT_DIGEST
|
|
+ prepare_digest_methods();
|
|
+#endif
|
|
+
|
|
+ return (ENGINE_set_ciphers(e, devcrypto_ciphers)
|
|
+#ifdef IMPLEMENT_DIGEST
|
|
+ && ENGINE_set_digests(e, devcrypto_digests)
|
|
+#endif
|
|
+/*
|
|
+ * Asymmetric ciphers aren't well supported with /dev/crypto. Among the BSD
|
|
+ * implementations, it seems to only exist in FreeBSD, and regarding the
|
|
+ * parameters in its crypt_kop, the manual crypto(4) has this to say:
|
|
+ *
|
|
+ * The semantics of these arguments are currently undocumented.
|
|
+ *
|
|
+ * Reading through the FreeBSD source code doesn't give much more than
|
|
+ * their CRK_MOD_EXP implementation for ubsec.
|
|
+ *
|
|
+ * It doesn't look much better with cryptodev-linux. They have the crypt_kop
|
|
+ * structure as well as the command (CRK_*) in cryptodev.h, but no support
|
|
+ * seems to be implemented at all for the moment.
|
|
+ *
|
|
+ * At the time of writing, it seems impossible to write proper support for
|
|
+ * FreeBSD's asym features without some very deep knowledge and access to
|
|
+ * specific kernel modules.
|
|
+ *
|
|
+ * /Richard Levitte, 2017-05-11
|
|
+ */
|
|
+#if 0
|
|
+# ifndef OPENSSL_NO_RSA
|
|
+ && ENGINE_set_RSA(e, devcrypto_rsa)
|
|
+# endif
|
|
+# ifndef OPENSSL_NO_DSA
|
|
+ && ENGINE_set_DSA(e, devcrypto_dsa)
|
|
+# endif
|
|
+# ifndef OPENSSL_NO_DH
|
|
+ && ENGINE_set_DH(e, devcrypto_dh)
|
|
+# endif
|
|
+# ifndef OPENSSL_NO_EC
|
|
+ && ENGINE_set_EC(e, devcrypto_ec)
|
|
+# endif
|
|
+#endif
|
|
+ );
|
|
+}
|
|
+
|
|
+#ifdef OPENSSL_NO_DYNAMIC_ENGINE
|
|
+/*
|
|
+ * In case this engine is built into libcrypto, then it doesn't offer any
|
|
+ * ability to be dynamically loadable.
|
|
+ */
|
|
+void engine_load_devcrypto_int(void)
|
|
+{
|
|
+ ENGINE *e = NULL;
|
|
+
|
|
+ if (!open_devcrypto())
|
|
+ return;
|
|
+
|
|
+ if ((e = ENGINE_new()) == NULL
|
|
+ || !bind_devcrypto(e)) {
|
|
+ close_devcrypto();
|
|
+ ENGINE_free(e);
|
|
+ return;
|
|
+ }
|
|
+
|
|
+ ENGINE_add(e);
|
|
+ ENGINE_free(e); /* Loose our local reference */
|
|
+ ERR_clear_error();
|
|
+}
|
|
+
|
|
+#else
|
|
+
|
|
+static int bind_helper(ENGINE *e, const char *id)
|
|
+{
|
|
+ if ((id && (strcmp(id, engine_devcrypto_id) != 0))
|
|
+ || !open_devcrypto())
|
|
+ return 0;
|
|
+ if (!bind_devcrypto(e)) {
|
|
+ close_devcrypto();
|
|
+ return 0;
|
|
+ }
|
|
+ return 1;
|
|
+}
|
|
+
|
|
+IMPLEMENT_DYNAMIC_CHECK_FN()
|
|
+IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
|
|
+
|
|
+#endif
|