- const EVP_MD *md_type;
- HMAC_CTX hmac;
- unsigned char key[PKCS12_MAC_KEY_LENGTH], *salt;
- int saltlen, iter;
- salt = p12->mac->salt->data;
- saltlen = p12->mac->salt->length;
- if (!p12->mac->iter) iter = 1;
- else iter = ASN1_INTEGER_get (p12->mac->iter);
- if(!(md_type =
- EVP_get_digestbyobj (p12->mac->dinfo->algor->algorithm))) {
- PKCS12err(PKCS12_F_PKCS12_GEN_MAC,PKCS12_R_UNKNOWN_DIGEST_ALGORITHM);
- return 0;
- }
- if(!PKCS12_key_gen (pass, passlen, salt, saltlen, PKCS12_MAC_ID, iter,
- PKCS12_MAC_KEY_LENGTH, key, md_type)) {
- PKCS12err(PKCS12_F_PKCS12_GEN_MAC,PKCS12_R_KEY_GEN_ERROR);
- return 0;
- }
- HMAC_Init (&hmac, key, PKCS12_MAC_KEY_LENGTH, md_type);
- HMAC_Update (&hmac, p12->authsafes->d.data->data,
- p12->authsafes->d.data->length);
- HMAC_Final (&hmac, mac, maclen);
- return 1;
+ const EVP_MD *md_type;
+ HMAC_CTX hmac;
+ unsigned char key[EVP_MAX_MD_SIZE], *salt;
+ int saltlen, iter;
+ int md_size;
+
+ if (!PKCS7_type_is_data(p12->authsafes)) {
+ PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_CONTENT_TYPE_NOT_DATA);
+ return 0;
+ }
+
+ salt = p12->mac->salt->data;
+ saltlen = p12->mac->salt->length;
+ if (!p12->mac->iter)
+ iter = 1;
+ else
+ iter = ASN1_INTEGER_get(p12->mac->iter);
+ if ((md_type = EVP_get_digestbyobj(p12->mac->dinfo->algor->algorithm))
+ == NULL) {
+ PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_UNKNOWN_DIGEST_ALGORITHM);
+ return 0;
+ }
+ md_size = EVP_MD_size(md_type);
+ if (md_size < 0)
+ return 0;
+ if (!PKCS12_key_gen(pass, passlen, salt, saltlen, PKCS12_MAC_ID, iter,
+ md_size, key, md_type)) {
+ PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_KEY_GEN_ERROR);
+ return 0;
+ }
+ HMAC_CTX_init(&hmac);
+ if (!HMAC_Init_ex(&hmac, key, md_size, md_type, NULL)
+ || !HMAC_Update(&hmac, p12->authsafes->d.data->data,
+ p12->authsafes->d.data->length)
+ || !HMAC_Final(&hmac, mac, maclen)) {
+ HMAC_CTX_cleanup(&hmac);
+ return 0;
+ }
+ HMAC_CTX_cleanup(&hmac);
+ return 1;