+const EVP_PKEY_METHOD *ENGINE_get_pkey_meth(ENGINE *e, int nid);
+const EVP_PKEY_ASN1_METHOD *ENGINE_get_pkey_asn1_meth(ENGINE *e, int nid);
+const EVP_PKEY_ASN1_METHOD *ENGINE_get_pkey_asn1_meth_str(ENGINE *e,
+ const char *str, int len);
+const EVP_PKEY_ASN1_METHOD *ENGINE_pkey_asn1_find_str(ENGINE **pe,
+ const char *str, int len);