+/*------------------------ ASN1 METHOD for GOST MAC -------------------*/
+static void mackey_free_gost(EVP_PKEY *pk)
+ {
+ if (pk->pkey.ptr) {
+ OPENSSL_free(pk->pkey.ptr);
+ }
+ }
+static int mac_ctrl_gost(EVP_PKEY *pkey, int op, long arg1, void *arg2)
+{
+ switch (op)
+ {
+ case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
+ *(int *)arg2 = NID_id_Gost28147_89_MAC;
+ return 2;
+ }
+ return -2;
+}
+
+static int gost94_param_encode(const EVP_PKEY *pkey, unsigned char **pder)
+{
+ int nid=gost94_nid_by_params(EVP_PKEY_get0((EVP_PKEY *)pkey));
+ return i2d_ASN1_OBJECT(OBJ_nid2obj(nid),pder);
+}
+static int gost2001_param_encode(const EVP_PKEY *pkey, unsigned char **pder)
+{
+ int nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(EVP_PKEY_get0((EVP_PKEY *)pkey)));
+ return i2d_ASN1_OBJECT(OBJ_nid2obj(nid),pder);
+}
+
+static int gost94_param_decode(EVP_PKEY *pkey, const unsigned char **pder, int derlen)
+{
+ ASN1_OBJECT *obj=NULL;
+ DSA *dsa = EVP_PKEY_get0(pkey);
+ int nid;
+ if (d2i_ASN1_OBJECT(&obj,pder,derlen)==NULL) {
+ return 0;
+ }
+ nid = OBJ_obj2nid(obj);
+ ASN1_OBJECT_free(obj);
+ if (!dsa)
+ {
+ dsa=DSA_new();
+ if (!EVP_PKEY_assign(pkey,NID_id_GostR3410_94,dsa)) return 0;
+ }
+ if (!fill_GOST94_params(dsa,nid)) return 0;
+ return 1;
+}
+
+static int gost2001_param_decode(EVP_PKEY *pkey, const unsigned char **pder, int derlen) {
+ ASN1_OBJECT *obj=NULL;
+ int nid;
+ EC_KEY *ec = EVP_PKEY_get0(pkey);
+ if (d2i_ASN1_OBJECT(&obj,pder,derlen)==NULL) {
+ return 0;
+ }
+ nid = OBJ_obj2nid(obj);
+ ASN1_OBJECT_free(obj);
+ if (!ec)
+ {
+ ec = EC_KEY_new();
+ if (!EVP_PKEY_assign(pkey,NID_id_GostR3410_2001,ec)) return 0;
+ }
+ if (!fill_GOST2001_params(ec, nid)) return 0;
+ return 1;
+}
+
+
+
+