xcrypt.h

   1 /* des.c --- DES and Triple-DES encryption/decryption Algorithm
   2  * Copyright (C) 1998, 1999, 2001, 2002, 2003, 2004, 2005, 2006, 2007
   3  *    Free Software Foundation, Inc.
   4  *
   5  * This file is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published
   7  * by the Free Software Foundation; either version 2, or (at your
   8  * option) any later version.
   9  *
  10  * This file is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this file; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  18  * 02110-1301, USA.
  19  *
  20  * ----------------------------------------------------------------------
  21  * Functions to compute MD4 message digest of files or memory blocks.
  22  * according to the definition of MD4 in RFC 1320 from April 1992.  Copyright
  23  * (C) 1995,1996,1997,1999,2000,2001,2002,2003,2005,2006 Free Software
  24  * Foundation, Inc.
  25  *
  26  * This program is free software; you can redistribute it and/or modify it
  27  * under the terms of the GNU General Public License as published by the
  28  * Free Software Foundation; either version 2, or (at your option) any
  29  * later version.
  30  *
  31  * This program is distributed in the hope that it will be useful,
  32  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  33  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  34  * GNU General Public License for more details.
  35  *
  36  * You should have received a copy of the GNU General Public License
  37  * along with this program; if not, write to the Free Software Foundation,
  38  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  39  */
  40
  41 #ifndef _XCRYPT_H
  42 #define _XCRYPT_H
  43
  44 #include <stdint.h>
  45 #include <stdbool.h>
  46 #include <stddef.h>
  47 #include <stdio.h>
  48
  49 #define MD5_DIGEST_SIZE 16
  50 #define MD5_BLOCK_SIZE  64
  51 #define IPAD            0x36
  52 #define OPAD            0x5c
  53
  54 #define gl_des_ecb_encrypt(ctx, from, to)  gl_des_ecb_crypt(ctx, from, to, 0)
  55 #define gl_des_ecb_decrypt(ctx, from, to)  gl_des_ecb_crypt(ctx, from, to, 1)
  56
  57 /*
  58  * Encryption/Decryption context of DES
  59  */
  60 typedef struct {
  61         uint32_t encrypt_subkeys[32];
  62         uint32_t decrypt_subkeys[32];
  63 } gl_des_ctx;
  64
  65 /* Structures to save state of computation between the single steps.  */
  66 struct md4_ctx {
  67         uint32_t A;
  68         uint32_t B;
  69         uint32_t C;
  70         uint32_t D;
  71
  72         uint32_t total[2];
  73         uint32_t buflen;
  74         uint32_t buffer[32];
  75 };
  76
  77 struct md5_ctx {
  78         uint32_t A;
  79         uint32_t B;
  80         uint32_t C;
  81         uint32_t D;
  82
  83         uint32_t total[2];
  84         uint32_t buflen;
  85         uint32_t buffer[32];
  86 };
  87
  88 extern bool gl_des_is_weak_key(const char * key);
  89 extern void gl_des_setkey(gl_des_ctx *ctx, const char * key);
  90 extern bool gl_des_makekey(gl_des_ctx *ctx, const char * key, size_t keylen);
  91 extern void gl_des_ecb_crypt(gl_des_ctx *ctx, const char * _from, char * _to, int mode);
  92
  93 extern void md4_process_block (const void *buffer, size_t len, struct md4_ctx *ctx);
  94 extern void md4_init_ctx (struct md4_ctx *ctx);
  95 extern void *md4_read_ctx (const struct md4_ctx *ctx, void *resbuf);
  96 extern void *md4_finish_ctx (struct md4_ctx *ctx, void *resbuf);
  97 extern void md4_process_bytes (const void *buffer, size_t len, struct md4_ctx *ctx);
  98 extern int md4_stream(FILE * stream, void *resblock);
  99 extern void *md4_buffer (const char *buffer, size_t len, void *resblock);
 100
 101 extern int hmac_md5 (const void *key, size_t keylen, const void *in, size_t inlen, void *resbuf);
 102
 103 extern void md5_init_ctx (struct md5_ctx *ctx);
 104 extern void md5_process_block (const void *buffer, size_t len, struct md5_ctx *ctx);
 105 extern void md5_process_bytes (const void *buffer, size_t len, struct md5_ctx *ctx);
 106 extern void *md5_finish_ctx (struct md5_ctx *ctx, void *resbuf);
 107 extern void *md5_read_ctx (const struct md5_ctx *ctx, void *resbuf);
 108 extern int md5_stream (FILE *stream, void *resblock);
 109 extern void *md5_buffer (const char *buffer, size_t len, void *resblock);
 110
 111 #endif /* _XCRYPT_H */