Check return values of <Digest>_Init functions in low level digest calls.

crypto/md2/md2_one.c

@@ -69,7 +69,8 @@ unsigned char *MD2(const unsigned char *d, size_t n, unsigned char *md)
 	static unsigned char m[MD2_DIGEST_LENGTH];
 
 	if (md == NULL) md=m;
-	MD2_Init(&c);
+	if (!MD2_Init(&c))
+		return NULL;
 #ifndef CHARSET_EBCDIC
 	MD2_Update(&c,d,n);
 #else

crypto/md4/md4_one.c

@@ -71,7 +71,8 @@ unsigned char *MD4(const unsigned char *d, size_t n, unsigned char *md)
 	static unsigned char m[MD4_DIGEST_LENGTH];
 
 	if (md == NULL) md=m;
-	MD4_Init(&c);
+	if (!MD4_Init(&c))
+		return NULL;
 #ifndef CHARSET_EBCDIC
 	MD4_Update(&c,d,n);
 #else

crypto/md5/md5_one.c

@@ -71,7 +71,8 @@ unsigned char *MD5(const unsigned char *d, size_t n, unsigned char *md)
 	static unsigned char m[MD5_DIGEST_LENGTH];
 
 	if (md == NULL) md=m;
-	MD5_Init(&c);
+	if (!MD5_Init(&c))
+		return NULL;
 #ifndef CHARSET_EBCDIC
 	MD5_Update(&c,d,n);
 #else

crypto/mdc2/mdc2_one.c

@@ -66,7 +66,8 @@ unsigned char *MDC2(const unsigned char *d, size_t n, unsigned char *md)
 	static unsigned char m[MDC2_DIGEST_LENGTH];
 
 	if (md == NULL) md=m;
-	MDC2_Init(&c);
+	if (!MDC2_Init(&c))
+		return NULL;
 	MDC2_Update(&c,d,n);
         MDC2_Final(md,&c);
 	OPENSSL_cleanse(&c,sizeof(c)); /* security consideration */

crypto/ripemd/rmd_one.c

@@ -68,7 +68,8 @@ unsigned char *RIPEMD160(const unsigned char *d, size_t n,
 	static unsigned char m[RIPEMD160_DIGEST_LENGTH];
 
 	if (md == NULL) md=m;
-	RIPEMD160_Init(&c);
+	if (!RIPEMD160_Init(&c))
+		return NULL;
 	RIPEMD160_Update(&c,d,n);
 	RIPEMD160_Final(md,&c);
 	OPENSSL_cleanse(&c,sizeof(c)); /* security consideration */

crypto/sha/sha1_one.c

@@ -68,7 +68,8 @@ unsigned char *SHA1(const unsigned char *d, size_t n, unsigned char *md)
 	static unsigned char m[SHA_DIGEST_LENGTH];
 
 	if (md == NULL) md=m;
-	SHA1_Init(&c);
+	if (!SHA1_Init(&c))
+		return NULL;
 	SHA1_Update(&c,d,n);
 	SHA1_Final(md,&c);
 	OPENSSL_cleanse(&c,sizeof(c));

crypto/sha/sha_one.c

@@ -68,7 +68,8 @@ unsigned char *SHA(const unsigned char *d, size_t n, unsigned char *md)
 	static unsigned char m[SHA_DIGEST_LENGTH];
 
 	if (md == NULL) md=m;
-	SHA_Init(&c);
+	if (!SHA_Init(&c))
+		return NULL;
 	SHA_Update(&c,d,n);
 	SHA_Final(md,&c);
 	OPENSSL_cleanse(&c,sizeof(c));