diff options
Diffstat (limited to 'lib/crypto/c_src/hmac.c')
| -rw-r--r-- | lib/crypto/c_src/hmac.c | 19 |
1 files changed, 6 insertions, 13 deletions
diff --git a/lib/crypto/c_src/hmac.c b/lib/crypto/c_src/hmac.c index 3b3e0bf894..3ea7c1f5dc 100644 --- a/lib/crypto/c_src/hmac.c +++ b/lib/crypto/c_src/hmac.c @@ -28,7 +28,7 @@ * ****************************************************************/ -#ifndef HAS_EVP_PKEY_CTX +#if !defined(HAS_EVP_PKEY_CTX) || DISABLE_EVP_HMAC #include "hmac.h" #include "digest.h" @@ -233,18 +233,19 @@ int hmac_low_level(ErlNifEnv* env, const EVP_MD *md, { unsigned int size_int; size_t size; + unsigned char buff[EVP_MAX_MD_SIZE]; - /* Find the needed space */ if (HMAC(md, key_bin.data, (int)key_bin.size, text.data, text.size, - NULL, &size_int) == NULL) + buff, &size_int) == NULL) { - *return_term = EXCP_ERROR(env, "Get HMAC size failed"); + *return_term = EXCP_ERROR(env, "HMAC sign failed"); return 0; } size = (size_t)size_int; /* Otherwise "size" is unused in 0.9.8.... */ + ASSERT(0 < size && size <= EVP_MAX_MD_SIZE); if (!enif_alloc_binary(size, ret_bin)) { *return_term = EXCP_ERROR(env, "Alloc binary"); @@ -252,15 +253,7 @@ int hmac_low_level(ErlNifEnv* env, const EVP_MD *md, } *ret_bin_alloc = 1; - /* And do the real HMAC calc */ - if (HMAC(md, - key_bin.data, (int)key_bin.size, - text.data, text.size, - ret_bin->data, &size_int) == NULL) - { - *return_term = EXCP_ERROR(env, "HMAC sign failed"); - return 0; - } + memcpy(ret_bin->data, buff, size); return 1; } |