SSHKEY_PRIVATE_PKCS8
private_key_format = SSHKEY_PRIVATE_PKCS8;
if (format == SSHKEY_PRIVATE_PKCS8 && (pkey = EVP_PKEY_new()) == NULL) {
if (format == SSHKEY_PRIVATE_PKCS8) {
case SSHKEY_PRIVATE_PKCS8: