diff options
Diffstat (limited to 'main/openssl/0001-crypto-hmac-support-EVP_MD_CTX_FLAG_ONESHOT-and-set-.patch')
| -rw-r--r-- | main/openssl/0001-crypto-hmac-support-EVP_MD_CTX_FLAG_ONESHOT-and-set-.patch | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/main/openssl/0001-crypto-hmac-support-EVP_MD_CTX_FLAG_ONESHOT-and-set-.patch b/main/openssl/0001-crypto-hmac-support-EVP_MD_CTX_FLAG_ONESHOT-and-set-.patch new file mode 100644 index 000000000..514ed0d83 --- /dev/null +++ b/main/openssl/0001-crypto-hmac-support-EVP_MD_CTX_FLAG_ONESHOT-and-set-.patch @@ -0,0 +1,82 @@ +From 16a40910dd3ae5ab702ee1274f9e2f08362e4474 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Timo=20Ter=C3=A4s?= <timo.teras@iki.fi> +Date: Fri, 4 Jun 2010 09:48:39 +0300 +Subject: [PATCH 1/3] crypto/hmac: support EVP_MD_CTX_FLAG_ONESHOT and set it properly + +Some engines (namely VIA C7 Padlock) work only if EVP_MD_CTX_FLAG_ONESHOT +is set before final update. This is because some crypto accelerators cannot +perform non-finalizing transform of the digest. + +The usage of EVP_MD_CTX_FLAG_ONESHOT is used semantically slightly +differently here. It is set before the final EVP_DigestUpdate call, not +necessarily before EVP_DigestInit call. This will not cause any problems +though. +--- + crypto/hmac/hmac.c | 14 +++++++++++--- + 1 files changed, 11 insertions(+), 3 deletions(-) + +diff --git a/crypto/hmac/hmac.c b/crypto/hmac/hmac.c +index 45015fe..7ce2a50 100644 +--- a/crypto/hmac/hmac.c ++++ b/crypto/hmac/hmac.c +@@ -66,6 +66,7 @@ int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len, + { + int i,j,reset=0; + unsigned char pad[HMAC_MAX_MD_CBLOCK]; ++ unsigned long flags; + + if (md != NULL) + { +@@ -82,6 +83,7 @@ int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len, + OPENSSL_assert(j <= (int)sizeof(ctx->key)); + if (j < len) + { ++ EVP_MD_CTX_set_flags(&ctx->md_ctx, EVP_MD_CTX_FLAG_ONESHOT); + if (!EVP_DigestInit_ex(&ctx->md_ctx,md, impl)) + goto err; + if (!EVP_DigestUpdate(&ctx->md_ctx,key,len)) +@@ -105,17 +107,22 @@ int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len, + { + for (i=0; i<HMAC_MAX_MD_CBLOCK; i++) + pad[i]=0x36^ctx->key[i]; ++ flags = EVP_MD_CTX_test_flags(&ctx->i_ctx, EVP_MD_CTX_FLAG_ONESHOT); ++ EVP_MD_CTX_clear_flags(&ctx->i_ctx, EVP_MD_CTX_FLAG_ONESHOT); + if (!EVP_DigestInit_ex(&ctx->i_ctx,md, impl)) + goto err; + if (!EVP_DigestUpdate(&ctx->i_ctx,pad,EVP_MD_block_size(md))) + goto err; ++ EVP_MD_CTX_set_flags(&ctx->i_ctx, flags); + + for (i=0; i<HMAC_MAX_MD_CBLOCK; i++) + pad[i]=0x5c^ctx->key[i]; ++ EVP_MD_CTX_clear_flags(&ctx->o_ctx, EVP_MD_CTX_FLAG_ONESHOT); + if (!EVP_DigestInit_ex(&ctx->o_ctx,md, impl)) + goto err; + if (!EVP_DigestUpdate(&ctx->o_ctx,pad,EVP_MD_block_size(md))) + goto err; ++ EVP_MD_CTX_set_flags(&ctx->o_ctx, EVP_MD_CTX_FLAG_ONESHOT); + } + if (!EVP_MD_CTX_copy_ex(&ctx->md_ctx,&ctx->i_ctx)) + goto err; +@@ -197,7 +204,8 @@ unsigned char *HMAC(const EVP_MD *evp_md, const void *key, int key_len, + + if (md == NULL) md=m; + HMAC_CTX_init(&c); +- if (!HMAC_Init(&c,key,key_len,evp_md)) ++ HMAC_CTX_set_flags(&c, EVP_MD_CTX_FLAG_ONESHOT); ++ if (!HMAC_Init_ex(&c,key,key_len,evp_md,NULL)) + goto err; + if (!HMAC_Update(&c,d,n)) + goto err; +@@ -212,6 +220,6 @@ unsigned char *HMAC(const EVP_MD *evp_md, const void *key, int key_len, + void HMAC_CTX_set_flags(HMAC_CTX *ctx, unsigned long flags) + { + EVP_MD_CTX_set_flags(&ctx->i_ctx, flags); +- EVP_MD_CTX_set_flags(&ctx->o_ctx, flags); +- EVP_MD_CTX_set_flags(&ctx->md_ctx, flags); ++ EVP_MD_CTX_set_flags(&ctx->o_ctx, flags & ~EVP_MD_CTX_FLAG_ONESHOT); ++ EVP_MD_CTX_set_flags(&ctx->md_ctx, flags & ~EVP_MD_CTX_FLAG_ONESHOT); + } +-- +1.7.0.4 + |