/* $Id: crypto.h,v 1.9 2008/07/31 19:56:26 hoganrobert Exp $ */ /* Copyright (C) 2006 - 2008 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 #include 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); TQString getFPDigestFromFP(const TQString &fp); TQString getNickNameFromFPDigest(const TQString &fpdigest); TQString getNickNameFromFP(const TQString &fp); TQString getFPFromNickName(const TQString &nickname); TQString getFPFromFPDigest(const TQString &fp); void storeServer(const TQString &server,const TQString &fp_identity); void clearServers(); TQString fp_identity(const TQString &server); TQString server(const TQString &fp_identity); TQString hashPassword(const char* secret); TQString 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);