- {
- if (s->s3->handshake_buffer)
- {
- BIO_write (s->s3->handshake_buffer,(void *)buf,len);
- }
- else
- {
- int i;
- for (i=0;i< SSL_MAX_DIGEST;i++)
- {
- if (s->s3->handshake_dgst[i]!= NULL)
- EVP_DigestUpdate(s->s3->handshake_dgst[i],buf,len);
- }
- }
- }
-
-int ssl3_digest_cached_records(SSL *s)
- {
- int i;
- long mask;
- const EVP_MD *md;
- long hdatalen;
- void *hdata;
-
- /* Allocate handshake_dgst array */
- ssl3_free_digest_list(s);
- s->s3->handshake_dgst = OPENSSL_malloc(SSL_MAX_DIGEST * sizeof(EVP_MD_CTX *));
- memset(s->s3->handshake_dgst,0,SSL_MAX_DIGEST *sizeof(EVP_MD_CTX *));
- hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,&hdata);
- if (hdatalen <= 0)
- {
- SSLerr(SSL_F_SSL3_DIGEST_CACHED_RECORDS, SSL_R_BAD_HANDSHAKE_LENGTH);
- return 0;
- }
-
- /* Loop through bitso of algorithm2 field and create MD_CTX-es */
- for (i=0;ssl_get_handshake_digest(i,&mask,&md); i++)
- {
- if ((mask & s->s3->tmp.new_cipher->algorithm2) && md)
- {
- s->s3->handshake_dgst[i]=EVP_MD_CTX_create();
- EVP_DigestInit_ex(s->s3->handshake_dgst[i],md,NULL);
- EVP_DigestUpdate(s->s3->handshake_dgst[i],hdata,hdatalen);
- }
- else
- {
- s->s3->handshake_dgst[i]=NULL;
- }
- }
- /* Free handshake_buffer BIO */
- BIO_free(s->s3->handshake_buffer);
- s->s3->handshake_buffer = NULL;
-
- return 1;
- }
-
-int ssl3_cert_verify_mac(SSL *s, int md_nid, unsigned char *p)
- {
- return(ssl3_handshake_mac(s,md_nid,NULL,0,p));
- }
-int ssl3_final_finish_mac(SSL *s,
- const char *sender, int len, unsigned char *p)
- {
- int ret;
- ret=ssl3_handshake_mac(s,NID_md5,sender,len,p);
- p+=ret;
- ret+=ssl3_handshake_mac(s,NID_sha1,sender,len,p);
- return(ret);
- }
-static int ssl3_handshake_mac(SSL *s, int md_nid,
- const char *sender, int len, unsigned char *p)
- {
- unsigned int ret;
- int npad,n;
- unsigned int i;
- unsigned char md_buf[EVP_MAX_MD_SIZE];
- EVP_MD_CTX ctx,*d=NULL;
-
- if (s->s3->handshake_buffer)
- if (!ssl3_digest_cached_records(s))
- return 0;
-
- /* Search for digest of specified type in the handshake_dgst
- * array*/
- for (i=0;i<SSL_MAX_DIGEST;i++)
- {
- if (s->s3->handshake_dgst[i]&&EVP_MD_CTX_type(s->s3->handshake_dgst[i])==md_nid)
- {
- d=s->s3->handshake_dgst[i];
- break;
- }
- }
- if (!d) {
- SSLerr(SSL_F_SSL3_HANDSHAKE_MAC,SSL_R_NO_REQUIRED_DIGEST);
- return 0;
- }
- EVP_MD_CTX_init(&ctx);
- EVP_MD_CTX_copy_ex(&ctx,d);
- n=EVP_MD_CTX_size(&ctx);
- if (n < 0)
- return 0;
-
- npad=(48/n)*n;
- if (sender != NULL)
- EVP_DigestUpdate(&ctx,sender,len);
- EVP_DigestUpdate(&ctx,s->session->master_key,
- s->session->master_key_length);
- EVP_DigestUpdate(&ctx,ssl3_pad_1,npad);
- EVP_DigestFinal_ex(&ctx,md_buf,&i);
-
- EVP_DigestInit_ex(&ctx,EVP_MD_CTX_md(&ctx), NULL);
- EVP_DigestUpdate(&ctx,s->session->master_key,
- s->session->master_key_length);
- EVP_DigestUpdate(&ctx,ssl3_pad_2,npad);
- EVP_DigestUpdate(&ctx,md_buf,i);
- EVP_DigestFinal_ex(&ctx,p,&ret);
-
- EVP_MD_CTX_cleanup(&ctx);
-
- return((int)ret);
- }
-
-int n_ssl3_mac(SSL *ssl, unsigned char *md, int send)
- {
- SSL3_RECORD *rec;
- unsigned char *mac_sec,*seq;
- EVP_MD_CTX md_ctx;
- const EVP_MD_CTX *hash;
- unsigned char *p,rec_char;
- unsigned int md_size;
- int npad;
- int t;
-
- if (send)
- {
- rec= &(ssl->s3->wrec);
- mac_sec= &(ssl->s3->write_mac_secret[0]);
- seq= &(ssl->s3->write_sequence[0]);
- hash=ssl->write_hash;
- }
- else
- {
- rec= &(ssl->s3->rrec);
- mac_sec= &(ssl->s3->read_mac_secret[0]);
- seq= &(ssl->s3->read_sequence[0]);
- hash=ssl->read_hash;
- }
-
- t=EVP_MD_CTX_size(hash);
- if (t < 0)
- return -1;
- md_size=t;
- npad=(48/md_size)*md_size;
-
- /* Chop the digest off the end :-) */
- EVP_MD_CTX_init(&md_ctx);
-
- EVP_MD_CTX_copy_ex( &md_ctx,hash);
- EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
- EVP_DigestUpdate(&md_ctx,ssl3_pad_1,npad);
- EVP_DigestUpdate(&md_ctx,seq,8);
- rec_char=rec->type;
- EVP_DigestUpdate(&md_ctx,&rec_char,1);
- p=md;
- s2n(rec->length,p);
- EVP_DigestUpdate(&md_ctx,md,2);
- EVP_DigestUpdate(&md_ctx,rec->input,rec->length);
- EVP_DigestFinal_ex( &md_ctx,md,NULL);
-
- EVP_MD_CTX_copy_ex( &md_ctx,hash);
- EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
- EVP_DigestUpdate(&md_ctx,ssl3_pad_2,npad);
- EVP_DigestUpdate(&md_ctx,md,md_size);
- EVP_DigestFinal_ex( &md_ctx,md,&md_size);
-
- EVP_MD_CTX_cleanup(&md_ctx);
-
- ssl3_record_sequence_update(seq);
- return(md_size);
- }
-
-void ssl3_record_sequence_update(unsigned char *seq)
- {
- int i;
-
- for (i=7; i>=0; i--)
- {
- ++seq[i];
- if (seq[i] != 0) break;
- }
- }
+{
+ if (s->s3->handshake_dgst == NULL)
+ BIO_write(s->s3->handshake_buffer, (void *)buf, len);
+ else
+ EVP_DigestUpdate(s->s3->handshake_dgst, buf, len);
+}
+
+int ssl3_digest_cached_records(SSL *s, int keep)
+{
+ const EVP_MD *md;
+ long hdatalen;
+ void *hdata;
+
+ if (s->s3->handshake_dgst == NULL) {
+ hdatalen = BIO_get_mem_data(s->s3->handshake_buffer, &hdata);
+ if (hdatalen <= 0) {
+ SSLerr(SSL_F_SSL3_DIGEST_CACHED_RECORDS, SSL_R_BAD_HANDSHAKE_LENGTH);
+ return 0;
+ }
+
+ s->s3->handshake_dgst = EVP_MD_CTX_create();
+ if (s->s3->handshake_dgst == NULL) {
+ SSLerr(SSL_F_SSL3_DIGEST_CACHED_RECORDS, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+
+ md = ssl_handshake_md(s);
+ if (md == NULL) {
+ SSLerr(SSL_F_SSL3_DIGEST_CACHED_RECORDS, ERR_R_INTERNAL_ERROR);
+ return 0;
+ }
+
+ EVP_DigestInit_ex(s->s3->handshake_dgst, md, NULL);
+ EVP_DigestUpdate(s->s3->handshake_dgst, hdata, hdatalen);
+
+ }
+ if (keep == 0) {
+ BIO_free(s->s3->handshake_buffer);
+ s->s3->handshake_buffer = NULL;
+ }
+
+ return 1;
+}
+
+int ssl3_final_finish_mac(SSL *s, const char *sender, int len, unsigned char *p)
+{
+ int ret;
+ EVP_MD_CTX *ctx = NULL;
+
+ if (!ssl3_digest_cached_records(s, 0))
+ return 0;
+
+ if (EVP_MD_CTX_type(s->s3->handshake_dgst) != NID_md5_sha1) {
+ SSLerr(SSL_F_SSL3_FINAL_FINISH_MAC, SSL_R_NO_REQUIRED_DIGEST);
+ return 0;
+ }
+
+ ctx = EVP_MD_CTX_create();
+ if (ctx == NULL) {
+ SSLerr(SSL_F_SSL3_FINAL_FINISH_MAC, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ EVP_MD_CTX_copy_ex(ctx, s->s3->handshake_dgst);
+
+ ret = EVP_MD_CTX_size(ctx);
+ if (ret < 0) {
+ EVP_MD_CTX_init(ctx);
+ return 0;
+ }
+
+ if ((sender != NULL && EVP_DigestUpdate(ctx, sender, len) <= 0)
+ || EVP_MD_CTX_ctrl(ctx, EVP_CTRL_SSL3_MASTER_SECRET,
+ s->session->master_key_length,
+ s->session->master_key) <= 0
+ || EVP_DigestFinal_ex(ctx, p, NULL) <= 0) {
+ SSLerr(SSL_F_SSL3_FINAL_FINISH_MAC, ERR_R_INTERNAL_ERROR);
+ ret = 0;
+ }
+
+ EVP_MD_CTX_destroy(ctx);
+
+ return ret;
+}