mirror of
https://codeberg.org/scip/pcp.git
synced 2025-12-17 12:00:56 +01:00
95 lines
2.6 KiB
C
95 lines
2.6 KiB
C
/*
|
|
This file is part of Pretty Curved Privacy (pcp1).
|
|
|
|
Copyright (C) 2013 T.Linden.
|
|
|
|
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 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
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/>.
|
|
|
|
You can contact me by mail: <tlinden AT cpan DOT org>.
|
|
*/
|
|
|
|
|
|
#ifndef _HAVE_PCP_MAC
|
|
#define _HAVE_PCP_MAC
|
|
|
|
/**
|
|
* \addtogroup CRYPTO
|
|
* @{
|
|
*/
|
|
#include <strings.h>
|
|
#include <stdlib.h>
|
|
#include <errno.h>
|
|
#include <sodium.h>
|
|
#include "defines.h"
|
|
#include "pad.h"
|
|
#include "mem.h"
|
|
|
|
|
|
/* how many times do we hash the passphrase */
|
|
#define HCYCLES 128000
|
|
|
|
/** Symmetrically encrypt a message.
|
|
|
|
This function encrypts a message symmetrically
|
|
using crypto_secretbox() using the given Curve25519 raw
|
|
secret key and the nonce.
|
|
|
|
It allocates apropriate memory for the result,
|
|
which will be stored in \a cipher.
|
|
|
|
\param[out] cipher Encrypted result.
|
|
\param[in] cleartext Clear message.
|
|
\param[in] clearsize Size of message.
|
|
\param[in] nonce A random nonce (24 Bytes).
|
|
\param[in] key A Curve25519 key (32 Bytes).
|
|
|
|
\return Returns the size of \a cipher.
|
|
*/
|
|
size_t pcp_sodium_mac(byte **cipher,
|
|
byte *cleartext,
|
|
size_t clearsize,
|
|
byte *nonce,
|
|
byte *key);
|
|
|
|
/** Decrypt a symmetrically encrypted message.
|
|
|
|
This function decrypts a symmetrically encrypted message
|
|
using crypto_secretbox_open() using the given Curve25519 raw
|
|
secret key and the nonce.
|
|
|
|
It allocates apropriate memory for the result,
|
|
which will be stored in \a cleartext.
|
|
|
|
\param[out] cleartext The decrypted result.
|
|
\param[in] message The encrypted message.
|
|
\param[in] messagesize Size of message.
|
|
\param[in] nonce A random nonce (24 Bytes).
|
|
\param[in] key A Curve25519 key (32 Bytes).
|
|
|
|
\return Returns 0 in case of success of -1 in case of an error. Check fatals_if_any().
|
|
|
|
*/
|
|
int pcp_sodium_verify_mac(byte **cleartext,
|
|
byte* message,
|
|
size_t messagesize,
|
|
byte *nonce,
|
|
byte *key);
|
|
|
|
|
|
|
|
|
|
#endif /* _HAVE_PCP_MAC */
|
|
|
|
/**@}*/
|