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/*
* Copyright (C) 2008-2011 Free Software Foundation, Inc.
*
* Author: Nikos Mavrogiannopoulos
*
* This file is part of GnuTLS.
*
* The GnuTLS is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 3 of
* the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
#ifndef GNUTLS_CRYPTO_H
#define GNUTLS_CRYPTO_H
#ifdef __cplusplus
extern "C"
{
#endif
typedef struct api_cipher_hd_st *gnutls_cipher_hd_t;
int gnutls_cipher_init (gnutls_cipher_hd_t * handle,
gnutls_cipher_algorithm_t cipher,
const gnutls_datum_t * key,
const gnutls_datum_t * iv);
int gnutls_cipher_encrypt (const gnutls_cipher_hd_t handle,
void *text, size_t textlen);
int gnutls_cipher_decrypt (const gnutls_cipher_hd_t handle,
void *ciphertext, size_t ciphertextlen);
int gnutls_cipher_decrypt2 (gnutls_cipher_hd_t handle,
const void *ciphertext, size_t ciphertextlen,
void *text, size_t textlen);
int gnutls_cipher_encrypt2 (gnutls_cipher_hd_t handle, const void *text,
size_t textlen, void *ciphertext,
size_t ciphertextlen);
void gnutls_cipher_set_iv (gnutls_cipher_hd_t handle, void *iv, size_t ivlen);
int gnutls_cipher_tag( gnutls_cipher_hd_t handle, void* tag, size_t tag_size);
int gnutls_cipher_add_auth( gnutls_cipher_hd_t handle, const void* text, size_t text_size);
void gnutls_cipher_deinit (gnutls_cipher_hd_t handle);
int gnutls_cipher_get_block_size (gnutls_cipher_algorithm_t algorithm);
typedef struct hash_hd_st *gnutls_hash_hd_t;
typedef struct hmac_hd_st *gnutls_hmac_hd_t;
int gnutls_hmac_init (gnutls_hmac_hd_t * dig,
gnutls_digest_algorithm_t algorithm, const void *key,
size_t keylen);
int gnutls_hmac (gnutls_hmac_hd_t handle, const void *text, size_t textlen);
void gnutls_hmac_output (gnutls_hmac_hd_t handle, void *digest);
void gnutls_hmac_deinit (gnutls_hmac_hd_t handle, void *digest);
int gnutls_hmac_get_len (gnutls_mac_algorithm_t algorithm);
int gnutls_hmac_fast (gnutls_mac_algorithm_t algorithm, const void *key,
size_t keylen, const void *text, size_t textlen,
void *digest);
int gnutls_hash_init (gnutls_hash_hd_t * dig,
gnutls_digest_algorithm_t algorithm);
int gnutls_hash (gnutls_hash_hd_t handle, const void *text, size_t textlen);
void gnutls_hash_output (gnutls_hash_hd_t handle, void *digest);
void gnutls_hash_deinit (gnutls_hash_hd_t handle, void *digest);
int gnutls_hash_get_len (gnutls_digest_algorithm_t algorithm);
int gnutls_hash_fast (gnutls_digest_algorithm_t algorithm,
const void *text, size_t textlen, void *digest);
/* register ciphers */
/**
* gnutls_rnd_level_t:
* @GNUTLS_RND_NONCE: Non-predictable random number. Fatal in parts
* of session if broken, i.e., vulnerable to statistical analysis.
* @GNUTLS_RND_RANDOM: Pseudo-random cryptographic random number.
* Fatal in session if broken.
* @GNUTLS_RND_KEY: Fatal in many sessions if broken.
*
* Enumeration of random quality levels.
*/
typedef enum gnutls_rnd_level
{
GNUTLS_RND_NONCE = 0,
GNUTLS_RND_RANDOM = 1,
GNUTLS_RND_KEY = 2
} gnutls_rnd_level_t;
int gnutls_rnd (gnutls_rnd_level_t level, void *data, size_t len);
#ifdef __cplusplus
}
#endif
#endif
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