Move CT viewer extension code to crypto/x509v3
[openssl.git] / ssl / s2_enc.c
index b43056f..1d08559 100644 (file)
  * [including the GNU Public Licence.]
  */
 
-#include <stdio.h>
 #include "ssl_locl.h"
+#ifndef OPENSSL_NO_SSL2
+#include <stdio.h>
 
-int ssl2_enc_init(s, client)
-SSL *s;
-int client;
+int ssl2_enc_init(SSL *s, int client)
        {
        /* Max number of bytes needed */
        EVP_CIPHER_CTX *rs,*ws;
-       EVP_CIPHER *c;
-       EVP_MD *md;
+       const EVP_CIPHER *c;
+       const EVP_MD *md;
        int num;
 
-       if (!ssl_cipher_get_evp(s->session->cipher,&c,&md))
+       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 *)
-               Malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
+               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 *)
-               Malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
+               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);
 
-       ssl2_generate_key_material(s);
+       if (ssl2_generate_key_material(s) <= 0)
+               return 0;
 
-       EVP_EncryptInit(ws,c,&(s->s2->key_material[(client)?num: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(rs,c,&(s->s2->key_material[(client)?0:num]),
+       EVP_DecryptInit_ex(rs,c,NULL,&(s->s2->key_material[(client)?0:num]),
                s->session->key_arg);
        s->s2->read_key=  &(s->s2->key_material[(client)?0:num]);
        s->s2->write_key= &(s->s2->key_material[(client)?num:0]);
@@ -112,11 +116,9 @@ err:
        }
 
 /* read/writes from s->s2->mac_data using length for encrypt and 
- * decrypt.  It sets the s->s2->padding, s->[rw]length and
- * s->s2->pad_data ptr if we are encrypting */
-void ssl2_enc(s,send)
-SSL *s;
-int send;
+ * decrypt.  It sets s->s2->padding and s->[rw]length
+ * if we are encrypting */
+void ssl2_enc(SSL *s, int send)
        {
        EVP_CIPHER_CTX *ds;
        unsigned long l;
@@ -146,10 +148,7 @@ int send;
        EVP_Cipher(ds,s->s2->mac_data,s->s2->mac_data,l);
        }
 
-void ssl2_mac(s, md,send)
-SSL *s;
-unsigned char *md;
-int send;
+void ssl2_mac(SSL *s, unsigned char *md, int send)
        {
        EVP_MD_CTX c;
        unsigned char sequence[4],*p,*sec,*act;
@@ -175,13 +174,20 @@ int send;
        l2n(seq,p);
 
        /* There has to be a MAC algorithm. */
-       EVP_DigestInit(&c,s->read_hash);
+       EVP_MD_CTX_init(&c);
+       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); 
        /* the above line also does the pad data */
        EVP_DigestUpdate(&c,sequence,4); 
-       EVP_DigestFinal(&c,md,NULL);
-       /* some would say I should zero the md context */
+       EVP_DigestFinal_ex(&c,md,NULL);
+       EVP_MD_CTX_cleanup(&c);
        }
+#else /* !OPENSSL_NO_SSL2 */
+
+# if PEDANTIC
+static void *dummy=&dummy;
+# endif
 
+#endif