DEPRECATEDIN_3_0(int EVP_PKEY_encrypt_old(unsigned char *enc_key,
const unsigned char *key,
int key_len, EVP_PKEY *pub_key))
+int EVP_PKEY_is_a(const EVP_PKEY *pkey, const char *name);
int EVP_PKEY_type(int type);
int EVP_PKEY_id(const EVP_PKEY *pkey);
int EVP_PKEY_base_id(const EVP_PKEY *pkey);