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/*
* Copyright (C) 2007 Martin Willi
* HSR Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
/**
* @defgroup shared_key shared_key
* @{ @ingroup keys
*/
#ifndef SHARED_KEY_H_
#define SHARED_KEY_H_
#include <collections/enumerator.h>
#include <utils/identification.h>
typedef struct shared_key_t shared_key_t;
typedef enum shared_key_type_t shared_key_type_t;
/**
* Type of a shared key.
*/
enum shared_key_type_t {
/** wildcard for all keys */
SHARED_ANY,
/** PSK for IKE authentication */
SHARED_IKE,
/** key for a EAP authentication method */
SHARED_EAP,
/** key to decrypt encrypted private keys */
SHARED_PRIVATE_KEY_PASS,
/** PIN to unlock a smartcard */
SHARED_PIN,
/** Calculated NT Hash = MD4(UTF-16LE(password)) */
SHARED_NT_HASH,
/** Postquantum Preshared Key */
SHARED_PPK,
};
/**
* enum names for shared_key_type_t
*/
extern enum_name_t *shared_key_type_names;
/**
* A symmetric key shared between multiple owners.
*
* This class is not thread save, do not add owners while others might be
* reading.
*/
struct shared_key_t {
/**
* Get the kind of this key.
*
* @return type of the key
*/
shared_key_type_t (*get_type)(shared_key_t *this);
/**
* Get the shared key data.
*
* @return chunk pointing to the internal key
*/
chunk_t (*get_key)(shared_key_t *this);
/**
* Increase refcount of the key.
*
* @return this with an increased refcount
*/
shared_key_t* (*get_ref)(shared_key_t *this);
/**
* Destroy a shared_key instance if all references are gone.
*/
void (*destroy)(shared_key_t *this);
};
/**
* A simple private key implementation
*
* @param type type of the shared key
* @param key key data, gets owned by instance
* @return simple shared key instance
*/
shared_key_t *shared_key_create(shared_key_type_t type, chunk_t key);
#endif /** SHARED_KEY_H_ @} */
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