+ if (!ASN1_INTEGER_set(kdf->iter, iter))
+ goto merr;
+
+ /* If have a key len set it up */
+
+ if (keylen > 0) {
+ if ((kdf->keylength = ASN1_INTEGER_new()) == NULL)
+ goto merr;
+ if (!ASN1_INTEGER_set(kdf->keylength, keylen))
+ goto merr;
+ }
+
+ /* prf can stay NULL if we are using hmacWithSHA1 */
+ if (prf_nid > 0 && prf_nid != NID_hmacWithSHA1) {
+ kdf->prf = X509_ALGOR_new();
+ if (kdf->prf == NULL)
+ goto merr;
+ X509_ALGOR_set0(kdf->prf, OBJ_nid2obj(prf_nid), V_ASN1_NULL, NULL);
+ }
+
+ /* Finally setup the keyfunc structure */
+
+ keyfunc = X509_ALGOR_new();
+ if (keyfunc == NULL)
+ goto merr;
+
+ keyfunc->algorithm = OBJ_nid2obj(NID_id_pbkdf2);
+
+ /* Encode PBKDF2PARAM into parameter of pbe2 */
+
+ if (!ASN1_TYPE_pack_sequence(ASN1_ITEM_rptr(PBKDF2PARAM), kdf,
+ &keyfunc->parameter))
+ goto merr;
+
+ PBKDF2PARAM_free(kdf);
+ return keyfunc;
+
+ merr:
+ ASN1err(ASN1_F_PKCS5_PBKDF2_SET, ERR_R_MALLOC_FAILURE);
+ PBKDF2PARAM_free(kdf);
+ X509_ALGOR_free(keyfunc);
+ return NULL;
+}