+static RSA_PSS_PARAMS *rsa_pss_decode(const X509_ALGOR *alg,
+ X509_ALGOR **pmaskHash)
+ {
+ const unsigned char *p;
+ int plen;
+ RSA_PSS_PARAMS *pss;
+
+ *pmaskHash = NULL;
+
+ if (!alg->parameter || alg->parameter->type != V_ASN1_SEQUENCE)
+ return NULL;
+ p = alg->parameter->value.sequence->data;
+ plen = alg->parameter->value.sequence->length;
+ pss = d2i_RSA_PSS_PARAMS(NULL, &p, plen);
+
+ if (!pss)
+ return NULL;
+
+ if (pss->maskGenAlgorithm)
+ {
+ ASN1_TYPE *param = pss->maskGenAlgorithm->parameter;
+ if (OBJ_obj2nid(pss->maskGenAlgorithm->algorithm) == NID_mgf1
+ && param->type == V_ASN1_SEQUENCE)
+ {
+ p = param->value.sequence->data;
+ plen = param->value.sequence->length;
+ *pmaskHash = d2i_X509_ALGOR(NULL, &p, plen);
+ }
+ }
+
+ return pss;
+ }
+
+static int rsa_pss_param_print(BIO *bp, RSA_PSS_PARAMS *pss,
+ X509_ALGOR *maskHash, int indent)