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/* $Id: crypto.h,v 1.8 2008/02/12 21:16:15 hoganrobert Exp $ */
/* Copyright (C) 2006 by Robert Hogan *
* robert@roberthogan.net *
* *
* 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. *
* *
* 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, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
*
* Most of this file is derived from Tor and Vidalia.
*
* The licences for both follow:
*
* Vidalia is distributed under the following license:
*
* Copyright (C) 2007, Matt Edman, Justin Hipple
*
* 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.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* * * *
*
* Pseudorandom number generation support in this file is derived from
* Tor's crypto.[ch]. Tor is distributed under this license.
*
* Copyright (c) 2001-2004, Roger Dingledine
* Copyright (c) 2004-2007, Roger Dingledine, Nick Mathewson
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* * Neither the names of the copyright owners nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
****************************************************************/
/**
* \file crypto.h
*
* \brief Headers for crypto.c
**/
#define BASE64_DIGEST_LEN 27
#define DIGEST_LEN 20
#define HEX_DIGEST_LEN 40
#define SIZE_T_CEILING (sizeof(char)<<(sizeof(size_t)*8 - 1))
#define S2K_SPECIFIER_LEN 9
#include <qmap.h>
#include <qstring.h>
typedef struct crypto_digest_env_t crypto_digest_env_t;
int read_all(int fd, char *buf, size_t count, int isSocket);
int base64_decode(char *dest, size_t destlen, const char *src, size_t srclen);
int digest_from_base64(char *digest, const char *d64);
void base16_encode(char *dest, size_t destlen, const char *src, size_t srclen);
int digest_to_base64(char *d64, const char *digest);
int base64_encode(char *dest, size_t destlen, const char *src, size_t srclen);
int base16_decode(char *dest, size_t destlen, const char *src, size_t srclen);
QString getFPDigestFromFP(const QString &fp);
QString getNickNameFromFPDigest(const QString &fpdigest);
QString getNickNameFromFP(const QString &fp);
QString getFPFromNickName(const QString &nickname);
QString getFPFromFPDigest(const QString &fp);
void storeServer(const QString &server,const QString &fp_identity);
void clearServers();
QString fp_identity(const QString &server);
QString server(const QString &fp_identity);
QString hashPassword(const char* secret);
QString crypto_rand_string(int len);
/* random numbers */
int crypto_seed_rng(void);
int crypto_rand(char *to, size_t n);
int crypto_rand_int(unsigned int max);
/*
cdecode.h - c header for a base64 decoding algorithm
This is part of the libb64 project, and has been placed in the public domain.
For details, see http://sourceforge.net/projects/libb64
*/
typedef enum
{
step_a, step_b, step_c, step_d
} base64_decodestep;
typedef struct
{
base64_decodestep step;
char plainchar;
} base64_decodestate;
void base64_init_decodestate(base64_decodestate* state_in);
int base64_decode_value(char value_in);
int base64_decode_block(const char* code_in, const int length_in, char* plaintext_out, base64_decodestate* state_in);
/*
cencode.h - c header for a base64 encoding algorithm
This is part of the libb64 project, and has been placed in the public domain.
For details, see http://sourceforge.net/projects/libb64
*/
typedef enum
{
step_A, step_B, step_C
} base64_encodestep;
typedef struct
{
base64_encodestep step;
char result;
int stepcount;
} base64_encodestate;
void base64_init_encodestate(base64_encodestate* state_in);
char base64_encode_value(char value_in);
int base64_encode_block(const char* plaintext_in, int length_in, char* code_out, base64_encodestate* state_in);
int base64_encode_blockend(char* code_out, base64_encodestate* state_in);
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