X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;ds=sidebyside;f=crypto%2Fhmac%2Fhmac.c;h=dc28d8da872972a755118b5f861b6020faef2f29;hb=b263f2124607c42a1013b6b342341196b2bdec8d;hp=a2a49d986a21d7fe60b66943103d337fc837c33b;hpb=20d2186c87dabec56c6da48961a779843724a019;p=oweals%2Fopenssl.git

diff --git a/crypto/hmac/hmac.c b/crypto/hmac/hmac.c
index a2a49d986a..dc28d8da87 100644
--- a/crypto/hmac/hmac.c
+++ b/crypto/hmac/hmac.c
@@ -55,13 +55,17 @@
  * copied and put under another distribution licence
  * [including the GNU Public Licence.]
  */
+
+#define OPENSSL_FIPSAPI
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include "cryptlib.h"
 #include <openssl/hmac.h>
 
-void HMAC_Init(HMAC_CTX *ctx, const void *key, int len,
-	       const EVP_MD *md)
+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];
@@ -77,16 +81,21 @@ void HMAC_Init(HMAC_CTX *ctx, const void *key, int len,
 	if (key != NULL)
 		{
 		reset=1;
-		j=EVP_MD_block_size(md);
+		j=M_EVP_MD_block_size(md);
+		OPENSSL_assert(j <= (int)sizeof(ctx->key));
 		if (j < len)
 			{
-			EVP_DigestInit_ex(&ctx->md_ctx,md, NULL);
-			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));
 			memcpy(ctx->key,key,len);
 			ctx->key_length=len;
 			}
@@ -99,34 +108,53 @@ void HMAC_Init(HMAC_CTX *ctx, const void *key, int len,
 		{
 		for (i=0; i<HMAC_MAX_MD_CBLOCK; i++)
 			pad[i]=0x36^ctx->key[i];
-		EVP_DigestInit_ex(&ctx->i_ctx,md, NULL);
-		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,M_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, NULL);
-		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,M_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;
+	}
+
+int HMAC_Init(HMAC_CTX *ctx, const void *key, int len, const EVP_MD *md)
+	{
+	if(key && md)
+	    HMAC_CTX_init(ctx);
+	return HMAC_Init_ex(ctx,key,len,md, NULL);
 	}
 
-void HMAC_Update(HMAC_CTX *ctx, const unsigned char *data, int len)
+int HMAC_Update(HMAC_CTX *ctx, const unsigned char *data, size_t len)
 	{
-	EVP_DigestUpdate(&ctx->md_ctx,data,len);
+	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)
 	{
-	int j;
 	unsigned int i;
 	unsigned char buf[EVP_MAX_MD_SIZE];
 
-	j=EVP_MD_block_size(ctx->md);
-
-	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)
@@ -136,6 +164,23 @@ void HMAC_CTX_init(HMAC_CTX *ctx)
 	EVP_MD_CTX_init(&ctx->md_ctx);
 	}
 
+int HMAC_CTX_copy(HMAC_CTX *dctx, HMAC_CTX *sctx)
+	{
+	HMAC_CTX_init(dctx);
+	if (!EVP_MD_CTX_copy_ex(&dctx->i_ctx, &sctx->i_ctx))
+		goto err;
+	if (!EVP_MD_CTX_copy_ex(&dctx->o_ctx, &sctx->o_ctx))
+		goto err;
+	if (!EVP_MD_CTX_copy_ex(&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)
 	{
 	EVP_MD_CTX_cleanup(&ctx->i_ctx);
@@ -145,7 +190,7 @@ void HMAC_CTX_cleanup(HMAC_CTX *ctx)
 	}
 
 unsigned char *HMAC(const EVP_MD *evp_md, const void *key, int key_len,
-		    const unsigned char *d, int n, unsigned char *md,
+		    const unsigned char *d, size_t n, unsigned char *md,
 		    unsigned int *md_len)
 	{
 	HMAC_CTX c;
@@ -153,10 +198,21 @@ 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);
+	return md;
+	err:
+	return NULL;
 	}
 
+void HMAC_CTX_set_flags(HMAC_CTX *ctx, unsigned long flags)
+	{
+	M_EVP_MD_CTX_set_flags(&ctx->i_ctx, flags);
+	M_EVP_MD_CTX_set_flags(&ctx->o_ctx, flags);
+	M_EVP_MD_CTX_set_flags(&ctx->md_ctx, flags);
+	}