X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=ssl%2Fs2_enc.c;h=1d0855940776b73a95bb37bd29073f891336c6d0;hp=690252e3d312fbd65bafca9d4db7b1e5823b5e4b;hb=c43a55407dccc6902058184d7dd0bd111fe6a61e;hpb=5574e0ed417c9a09487a270fec3df34d3094f5c6

diff --git a/ssl/s2_enc.c b/ssl/s2_enc.c
index 690252e3d3..1d08559407 100644
--- a/ssl/s2_enc.c
+++ b/ssl/s2_enc.c
@@ -68,37 +68,41 @@ int ssl2_enc_init(SSL *s, int client)
 	const EVP_MD *md;
 	int num;
 
-	if (!ssl_cipher_get_evp(s->session,&c,&md,NULL))
+	if (!ssl_cipher_get_evp(s->session,&c,&md,NULL,NULL,NULL, 0))
 		{
 		ssl2_return_error(s,SSL2_PE_NO_CIPHER);
 		SSLerr(SSL_F_SSL2_ENC_INIT,SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS);
 		return(0);
 		}
-
-	s->read_hash=md;
-	s->write_hash=md;
+	ssl_replace_hash(&s->read_hash,md);
+	ssl_replace_hash(&s->write_hash,md);
 
 	if ((s->enc_read_ctx == NULL) &&
 		((s->enc_read_ctx=(EVP_CIPHER_CTX *)
 		OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
 		goto err;
+
+	/* make sure it's intialized in case the malloc for enc_write_ctx fails
+	 * and we exit with an error */
+	rs= s->enc_read_ctx;
+	EVP_CIPHER_CTX_init(rs);
+
 	if ((s->enc_write_ctx == NULL) &&
 		((s->enc_write_ctx=(EVP_CIPHER_CTX *)
 		OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
 		goto err;
 
-	rs= s->enc_read_ctx;
 	ws= s->enc_write_ctx;
-
-	EVP_CIPHER_CTX_init(rs);
 	EVP_CIPHER_CTX_init(ws);
 
 	num=c->key_len;
 	s->s2->key_material_length=num*2;
+	OPENSSL_assert(s->s2->key_material_length <= sizeof s->s2->key_material);
 
 	if (ssl2_generate_key_material(s) <= 0)
 		return 0;
 
+	OPENSSL_assert(c->iv_len <= (int)sizeof(s->session->key_arg));
 	EVP_EncryptInit_ex(ws,c,NULL,&(s->s2->key_material[(client)?num:0]),
 		s->session->key_arg);
 	EVP_DecryptInit_ex(rs,c,NULL,&(s->s2->key_material[(client)?0:num]),
@@ -171,7 +175,7 @@ void ssl2_mac(SSL *s, unsigned char *md, int send)
 
 	/* There has to be a MAC algorithm. */
 	EVP_MD_CTX_init(&c);
-	EVP_DigestInit_ex(&c, s->read_hash, NULL);
+	EVP_MD_CTX_copy(&c, s->read_hash);
 	EVP_DigestUpdate(&c,sec,
 		EVP_CIPHER_CTX_key_length(s->enc_read_ctx));
 	EVP_DigestUpdate(&c,act,len);