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path: root/Cryptlib/OpenSSL/crypto/hmac/hmac.c
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Diffstat (limited to 'Cryptlib/OpenSSL/crypto/hmac/hmac.c')
-rw-r--r--Cryptlib/OpenSSL/crypto/hmac/hmac.c152
1 files changed, 124 insertions, 28 deletions
diff --git a/Cryptlib/OpenSSL/crypto/hmac/hmac.c b/Cryptlib/OpenSSL/crypto/hmac/hmac.c
index 639fd8c3..51a0a3ef 100644
--- a/Cryptlib/OpenSSL/crypto/hmac/hmac.c
+++ b/Cryptlib/OpenSSL/crypto/hmac/hmac.c
@@ -61,30 +61,70 @@
#include "cryptlib.h"
#include <openssl/hmac.h>
-#ifndef OPENSSL_FIPS
+#ifdef OPENSSL_FIPS
+# include <openssl/fips.h>
+#endif
-void HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len,
- const EVP_MD *md, ENGINE *impl)
+int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len,
+ const EVP_MD *md, ENGINE *impl)
{
int i, j, reset = 0;
unsigned char pad[HMAC_MAX_MD_CBLOCK];
+#ifdef OPENSSL_FIPS
+ /* If FIPS mode switch to approved implementation if possible */
+ if (FIPS_mode()) {
+ const EVP_MD *fipsmd;
+ if (md) {
+ fipsmd = FIPS_get_digestbynid(EVP_MD_type(md));
+ if (fipsmd)
+ md = fipsmd;
+ }
+ }
+
+ if (FIPS_mode()) {
+ /* If we have an ENGINE need to allow non FIPS */
+ if ((impl || ctx->i_ctx.engine)
+ && !(ctx->i_ctx.flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)) {
+ EVPerr(EVP_F_HMAC_INIT_EX, EVP_R_DISABLED_FOR_FIPS);
+ return 0;
+ }
+ /*
+ * Other algorithm blocking will be done in FIPS_cmac_init, via
+ * FIPS_hmac_init_ex().
+ */
+ if (!impl && !ctx->i_ctx.engine)
+ return FIPS_hmac_init_ex(ctx, key, len, md, NULL);
+ }
+#endif
+ /* If we are changing MD then we must have a key */
+ if (md != NULL && md != ctx->md && (key == NULL || len < 0))
+ return 0;
+
if (md != NULL) {
reset = 1;
ctx->md = md;
- } else
+ } else if (ctx->md) {
md = ctx->md;
+ } else {
+ return 0;
+ }
if (key != NULL) {
reset = 1;
j = EVP_MD_block_size(md);
OPENSSL_assert(j <= (int)sizeof(ctx->key));
if (j < len) {
- EVP_DigestInit_ex(&ctx->md_ctx, md, impl);
- EVP_DigestUpdate(&ctx->md_ctx, key, len);
- EVP_DigestFinal_ex(&(ctx->md_ctx), ctx->key, &ctx->key_length);
+ if (!EVP_DigestInit_ex(&ctx->md_ctx, md, impl))
+ goto err;
+ if (!EVP_DigestUpdate(&ctx->md_ctx, key, len))
+ goto err;
+ if (!EVP_DigestFinal_ex(&(ctx->md_ctx), ctx->key,
+ &ctx->key_length))
+ goto err;
} else {
- OPENSSL_assert(len >= 0 && len <= (int)sizeof(ctx->key));
+ if (len < 0 || len > (int)sizeof(ctx->key))
+ return 0;
memcpy(ctx->key, key, len);
ctx->key_length = len;
}
@@ -96,38 +136,67 @@ void HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len,
if (reset) {
for (i = 0; i < HMAC_MAX_MD_CBLOCK; i++)
pad[i] = 0x36 ^ ctx->key[i];
- EVP_DigestInit_ex(&ctx->i_ctx, md, impl);
- EVP_DigestUpdate(&ctx->i_ctx, pad, EVP_MD_block_size(md));
+ 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;
for (i = 0; i < HMAC_MAX_MD_CBLOCK; i++)
pad[i] = 0x5c ^ ctx->key[i];
- EVP_DigestInit_ex(&ctx->o_ctx, md, impl);
- EVP_DigestUpdate(&ctx->o_ctx, pad, EVP_MD_block_size(md));
+ 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_copy_ex(&ctx->md_ctx, &ctx->i_ctx);
+ if (!EVP_MD_CTX_copy_ex(&ctx->md_ctx, &ctx->i_ctx))
+ goto err;
+ return 1;
+ err:
+ return 0;
}
-void HMAC_Init(HMAC_CTX *ctx, const void *key, int len, const EVP_MD *md)
+int HMAC_Init(HMAC_CTX *ctx, const void *key, int len, const EVP_MD *md)
{
if (key && md)
HMAC_CTX_init(ctx);
- HMAC_Init_ex(ctx, key, len, md, NULL);
+ return HMAC_Init_ex(ctx, key, len, md, NULL);
}
-void HMAC_Update(HMAC_CTX *ctx, const unsigned char *data, size_t len)
+int HMAC_Update(HMAC_CTX *ctx, const unsigned char *data, size_t len)
{
- EVP_DigestUpdate(&ctx->md_ctx, data, len);
+#ifdef OPENSSL_FIPS
+ if (FIPS_mode() && !ctx->i_ctx.engine)
+ return FIPS_hmac_update(ctx, data, len);
+#endif
+ if (!ctx->md)
+ return 0;
+
+ return EVP_DigestUpdate(&ctx->md_ctx, data, len);
}
-void HMAC_Final(HMAC_CTX *ctx, unsigned char *md, unsigned int *len)
+int HMAC_Final(HMAC_CTX *ctx, unsigned char *md, unsigned int *len)
{
unsigned int i;
unsigned char buf[EVP_MAX_MD_SIZE];
+#ifdef OPENSSL_FIPS
+ if (FIPS_mode() && !ctx->i_ctx.engine)
+ return FIPS_hmac_final(ctx, md, len);
+#endif
+
+ if (!ctx->md)
+ goto err;
- EVP_DigestFinal_ex(&ctx->md_ctx, buf, &i);
- EVP_MD_CTX_copy_ex(&ctx->md_ctx, &ctx->o_ctx);
- EVP_DigestUpdate(&ctx->md_ctx, buf, i);
- EVP_DigestFinal_ex(&ctx->md_ctx, md, len);
+ if (!EVP_DigestFinal_ex(&ctx->md_ctx, buf, &i))
+ goto err;
+ if (!EVP_MD_CTX_copy_ex(&ctx->md_ctx, &ctx->o_ctx))
+ goto err;
+ if (!EVP_DigestUpdate(&ctx->md_ctx, buf, i))
+ goto err;
+ if (!EVP_DigestFinal_ex(&ctx->md_ctx, md, len))
+ goto err;
+ return 1;
+ err:
+ return 0;
}
void HMAC_CTX_init(HMAC_CTX *ctx)
@@ -135,10 +204,33 @@ void HMAC_CTX_init(HMAC_CTX *ctx)
EVP_MD_CTX_init(&ctx->i_ctx);
EVP_MD_CTX_init(&ctx->o_ctx);
EVP_MD_CTX_init(&ctx->md_ctx);
+ ctx->md = NULL;
+}
+
+int HMAC_CTX_copy(HMAC_CTX *dctx, HMAC_CTX *sctx)
+{
+ if (!EVP_MD_CTX_copy(&dctx->i_ctx, &sctx->i_ctx))
+ goto err;
+ if (!EVP_MD_CTX_copy(&dctx->o_ctx, &sctx->o_ctx))
+ goto err;
+ if (!EVP_MD_CTX_copy(&dctx->md_ctx, &sctx->md_ctx))
+ goto err;
+ memcpy(dctx->key, sctx->key, HMAC_MAX_MD_CBLOCK);
+ dctx->key_length = sctx->key_length;
+ dctx->md = sctx->md;
+ return 1;
+ err:
+ return 0;
}
void HMAC_CTX_cleanup(HMAC_CTX *ctx)
{
+#ifdef OPENSSL_FIPS
+ if (FIPS_mode() && !ctx->i_ctx.engine) {
+ FIPS_hmac_ctx_cleanup(ctx);
+ return;
+ }
+#endif
EVP_MD_CTX_cleanup(&ctx->i_ctx);
EVP_MD_CTX_cleanup(&ctx->o_ctx);
EVP_MD_CTX_cleanup(&ctx->md_ctx);
@@ -155,11 +247,17 @@ unsigned char *HMAC(const EVP_MD *evp_md, const void *key, int key_len,
if (md == NULL)
md = m;
HMAC_CTX_init(&c);
- HMAC_Init(&c, key, key_len, evp_md);
- HMAC_Update(&c, d, n);
- HMAC_Final(&c, md, md_len);
+ if (!HMAC_Init(&c, key, key_len, evp_md))
+ goto err;
+ if (!HMAC_Update(&c, d, n))
+ goto err;
+ if (!HMAC_Final(&c, md, md_len))
+ goto err;
+ HMAC_CTX_cleanup(&c);
+ return md;
+ err:
HMAC_CTX_cleanup(&c);
- return (md);
+ return NULL;
}
void HMAC_CTX_set_flags(HMAC_CTX *ctx, unsigned long flags)
@@ -168,5 +266,3 @@ void HMAC_CTX_set_flags(HMAC_CTX *ctx, unsigned long flags)
EVP_MD_CTX_set_flags(&ctx->o_ctx, flags);
EVP_MD_CTX_set_flags(&ctx->md_ctx, flags);
}
-
-#endif
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-17 04:32:25 +0000