avis/keys.h

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/*
 *  Avis Elvin client library for C.
 *
 *  Copyright (C) 2008 Matthew Phillips <avis@mattp.name>
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of version 3 of the GNU Lesser General
 *  Public License as published by the Free Software Foundation.
 *
 *  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.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef ELVIN_KEYS_H
#define ELVIN_KEYS_H

#include <string.h>

#include <avis/defs.h>
#include <avis/stdtypes.h>
#include <avis/arrays.h>

#define EMPTY_KEYS (&_empty_keys)

typedef struct
{
  uint8_t * data;
  uint32_t  length;
} Key;

typedef struct
{
  ArrayList keys [3];
} Keys;

struct KeyScheme_t;

typedef struct KeyScheme_t * KeyScheme;

AVIS_PUBLIC_DATA struct KeyScheme_t _KEY_SCHEME_SHA1_DUAL;
AVIS_PUBLIC_DATA struct KeyScheme_t _KEY_SCHEME_SHA1_PRODUCER;
AVIS_PUBLIC_DATA struct KeyScheme_t _KEY_SCHEME_SHA1_CONSUMER;

#define KEY_SCHEME_SHA1_DUAL (&_KEY_SCHEME_SHA1_DUAL)

#define KEY_SCHEME_SHA1_PRODUCER (&_KEY_SCHEME_SHA1_PRODUCER)

#define KEY_SCHEME_SHA1_CONSUMER (&_KEY_SCHEME_SHA1_CONSUMER)

AVIS_PUBLIC_DATA Keys _empty_keys;

#define elvin_keys_create() \
  (elvin_keys_init ((Keys *)avis_emalloc (sizeof (Keys))))

#define elvin_keys_destroy(keys) \
  if ((keys) != EMPTY_KEYS && (keys) != NULL) \
  {\
    elvin_keys_free (keys); free (keys); \
  }\
  keys = NULL;\


AVIS_PUBLIC
Keys *elvin_keys_init (Keys *keys);

AVIS_PUBLIC
Keys *elvin_keys_copy (Keys *keys);

AVIS_PUBLIC
void elvin_keys_free (Keys *keys);

AVIS_PUBLIC
bool elvin_keys_equal (Keys *keys1, Keys *keys2);

AVIS_PUBLIC
bool elvin_keys_add (Keys *keys, KeyScheme scheme, Key key);

AVIS_PUBLIC
bool elvin_keys_add_dual_consumer (Keys *keys, KeyScheme scheme, Key key);

AVIS_PUBLIC
bool elvin_keys_add_dual_producer (Keys *keys, KeyScheme scheme, Key key);

AVIS_PUBLIC
void elvin_key_free (Key key);

#define elvin_key_copy(key) \
  (elvin_key_create_from_data ((key).data, (key).length))

AVIS_PUBLIC
Key elvin_key_create_from_string (const char *str);

AVIS_PUBLIC
Key elvin_key_create_from_data (const uint8_t *data, size_t length);

AVIS_PUBLIC
Key elvin_key_create_public (Key private_key, KeyScheme scheme);

AVIS_PUBLIC
bool elvin_key_equal (Key key1, Key key2);

#endif /* ELVIN_KEYS_H */

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