include/cipher.h

   1 /* cipher.h - Definitions for OpenPGP
   2  * Copyright (C) 1998, 1999, 2000, 2001, 2006 Free Software Foundation, Inc.
   3  *
   4  * This file is part of GnuPG.
   5  *
   6  * GnuPG is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * GnuPG is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19  * USA.
  20  */
  21 #ifndef G10_CIPHER_H
  22 #define G10_CIPHER_H
  23
  24 #include <gcrypt.h>
  25
  26 /* Macros for compatibility with older libgcrypt versions. */
  27 #ifndef GCRY_PK_USAGE_CERT
  28 # define GCRY_PK_USAGE_CERT 4
  29 # define GCRY_PK_USAGE_AUTH 8
  30 # define GCRY_PK_USAGE_UNKN 128
  31 #endif
  32
  33
  34 /* Constants for OpenPGP. */
  35
  36 #define CIPHER_ALGO_NONE         /*  0 */  GCRY_CIPHER_NONE
  37 #define CIPHER_ALGO_IDEA         /*  1 */  GCRY_CIPHER_IDEA
  38 #define CIPHER_ALGO_3DES         /*  2 */  GCRY_CIPHER_3DES
  39 #define CIPHER_ALGO_CAST5        /*  3 */  GCRY_CIPHER_CAST5
  40 #define CIPHER_ALGO_BLOWFISH     /*  4 */  GCRY_CIPHER_BLOWFISH /* 128 bit */
  41 /* 5 & 6 are reserved */
  42 #define CIPHER_ALGO_AES          /*  7 */  GCRY_CIPHER_AES
  43 #define CIPHER_ALGO_AES192       /*  8 */  GCRY_CIPHER_AES192
  44 #define CIPHER_ALGO_AES256       /*  9 */  GCRY_CIPHER_AES256
  45 #define CIPHER_ALGO_RIJNDAEL     CIPHER_ALGO_AES
  46 #define CIPHER_ALGO_RIJNDAEL192  CIPHER_ALGO_AES192
  47 #define CIPHER_ALGO_RIJNDAEL256  CIPHER_ALGO_AES256
  48 #define CIPHER_ALGO_TWOFISH      /* 10 */  GCRY_CIPHER_TWOFISH  /* 256 bit */
  49 #define CIPHER_ALGO_DUMMY          110    /* No encryption at all. */
  50
  51 #define PUBKEY_ALGO_RSA          /*  1 */ GCRY_PK_RSA
  52 #define PUBKEY_ALGO_RSA_E        /*  2 */ GCRY_PK_RSA_E /* RSA encrypt only. */
  53 #define PUBKEY_ALGO_RSA_S        /*  3 */ GCRY_PK_RSA_S /* RSA sign only.    */
  54 #define PUBKEY_ALGO_ELGAMAL_E    /* 16 */ GCRY_PK_ELG_E /* Elgamal encr only */
  55 #define PUBKEY_ALGO_DSA          /* 17 */ GCRY_PK_DSA
  56 #define PUBKEY_ALGO_ELGAMAL      /* 20 */ GCRY_PK_ELG   /* Elgamal encr+sign */
  57
  58 #define PUBKEY_USAGE_SIG     GCRY_PK_USAGE_SIGN  /* Good for signatures. */
  59 #define PUBKEY_USAGE_ENC     GCRY_PK_USAGE_ENCR  /* Good for encryption. */
  60 #define PUBKEY_USAGE_CERT    GCRY_PK_USAGE_CERT  /* Also good to certify keys. */
  61 #define PUBKEY_USAGE_AUTH    GCRY_PK_USAGE_AUTH  /* Good for authentication. */
  62 #define PUBKEY_USAGE_UNKNOWN GCRY_PK_USAGE_UNKN  /* Unknown usage flag. */
  63
  64 #define DIGEST_ALGO_MD5       /*  1 */ GCRY_MD_MD5
  65 #define DIGEST_ALGO_SHA1      /*  2 */ GCRY_MD_SHA1
  66 #define DIGEST_ALGO_RMD160    /*  3 */ GCRY_MD_RMD160
  67 /* 4, 5, 6, and 7 are reserved */
  68 #define DIGEST_ALGO_SHA256    /*  8 */ GCRY_MD_SHA256
  69 #define DIGEST_ALGO_SHA384    /*  9 */ GCRY_MD_SHA384
  70 #define DIGEST_ALGO_SHA512    /* 10 */ GCRY_MD_SHA512
  71 /* SHA224 is as of now only defined in the libgcrypt SVN; thus we
  72    can't use that macro.  */
  73 #define DIGEST_ALGO_SHA224    /* 11 */ 11 /* GCRY_MD_SHA224 */
  74
  75 #define COMPRESS_ALGO_NONE 0
  76 #define COMPRESS_ALGO_ZIP  1
  77 #define COMPRESS_ALGO_ZLIB 2
  78 #define COMPRESS_ALGO_BZIP2  3
  79
  80 #define is_RSA(a)     ((a)==PUBKEY_ALGO_RSA || (a)==PUBKEY_ALGO_RSA_E \
  81                        || (a)==PUBKEY_ALGO_RSA_S )
  82 #define is_ELGAMAL(a) ((a)==PUBKEY_ALGO_ELGAMAL_E)
  83 #define is_DSA(a)     ((a)==PUBKEY_ALGO_DSA)
  84
  85 /* The data encryption key object. */
  86 typedef struct
  87 {
  88   int algo;
  89   int keylen;
  90   int algo_info_printed;
  91   int use_mdc;
  92   int symmetric;
  93   byte key[32]; /* This is the largest used keylen (256 bit). */
  94 } DEK;
  95
  96
  97
  98 /* Constants to allocate static MPI arrays. */
  99 #define PUBKEY_MAX_NPKEY  4
 100 #define PUBKEY_MAX_NSKEY  6
 101 #define PUBKEY_MAX_NSIG   2
 102 #define PUBKEY_MAX_NENC   2
 103
 104 #endif /*G10_CIPHER_H*/