- EVP_DigestInit (&ctx, md);
- EVP_DigestUpdate (&ctx, pass, passlen);
- EVP_DigestUpdate (&ctx, salt, saltlen);
- EVP_DigestFinal (&ctx, md_tmp, NULL);
+ PBEPARAM *pbe;
+ int saltlen, iter;
+ unsigned char *salt;
+ const unsigned char *pbuf;
+ int mdsize;
+ int rv = 0;
+ EVP_MD_CTX_init(&ctx);
+
+ /* Extract useful info from parameter */
+ if (param == NULL || param->type != V_ASN1_SEQUENCE ||
+ param->value.sequence == NULL) {
+ EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN,EVP_R_DECODE_ERROR);
+ return 0;
+ }
+
+ pbuf = param->value.sequence->data;
+ if (!(pbe = d2i_PBEPARAM(NULL, &pbuf, param->value.sequence->length))) {
+ EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN,EVP_R_DECODE_ERROR);
+ return 0;
+ }
+
+ if (!pbe->iter) iter = 1;
+ else iter = ASN1_INTEGER_get (pbe->iter);
+ salt = pbe->salt->data;
+ saltlen = pbe->salt->length;
+
+ if(!pass) passlen = 0;
+ else if(passlen == -1) passlen = strlen(pass);
+
+ if (!EVP_DigestInit_ex(&ctx, md, NULL))
+ goto err;
+ if (!EVP_DigestUpdate(&ctx, pass, passlen))
+ goto err;
+ if (!EVP_DigestUpdate(&ctx, salt, saltlen))
+ goto err;
+ PBEPARAM_free(pbe);
+ if (!EVP_DigestFinal_ex(&ctx, md_tmp, NULL))
+ goto err;
+ mdsize = EVP_MD_size(md);
+ if (mdsize < 0)
+ return 0;