+ /* Check */
+ int (*pkey_check) (const EVP_PKEY *pk);
+ int (*pkey_public_check) (const EVP_PKEY *pk);
+ int (*pkey_param_check) (const EVP_PKEY *pk);
+ /* Get/set raw private/public key data */
+ int (*set_priv_key) (EVP_PKEY *pk, const unsigned char *priv, size_t len);
+ int (*set_pub_key) (EVP_PKEY *pk, const unsigned char *pub, size_t len);