SilcUInt32 silc_##cipher##_context_len()
/* Prototypes */
-bool silc_cipher_register(SilcCipherObject *cipher);
+bool silc_cipher_register(const SilcCipherObject *cipher);
bool silc_cipher_unregister(SilcCipherObject *cipher);
bool silc_cipher_register_default(void);
bool silc_cipher_alloc(const unsigned char *name, SilcCipher *new_cipher);