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/* cipher.h - Definitions for OpenPGP
* Copyright (C) 1998, 1999, 2000, 2001, 2006,
* 2007 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG 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.
*
* GnuPG 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/>.
*/
#ifndef G10_CIPHER_H
#define G10_CIPHER_H
#include <gcrypt.h>
/* Macros for compatibility with older libgcrypt versions. */
#ifndef GCRY_PK_USAGE_CERT
# define GCRY_PK_USAGE_CERT 4
# define GCRY_PK_USAGE_AUTH 8
# define GCRY_PK_USAGE_UNKN 128
#endif
/* Constants for OpenPGP. */
#define CIPHER_ALGO_NONE /* 0 */ GCRY_CIPHER_NONE
#define CIPHER_ALGO_IDEA /* 1 */ GCRY_CIPHER_IDEA
#define CIPHER_ALGO_3DES /* 2 */ GCRY_CIPHER_3DES
#define CIPHER_ALGO_CAST5 /* 3 */ GCRY_CIPHER_CAST5
#define CIPHER_ALGO_BLOWFISH /* 4 */ GCRY_CIPHER_BLOWFISH /* 128 bit */
/* 5 & 6 are reserved */
#define CIPHER_ALGO_AES /* 7 */ GCRY_CIPHER_AES
#define CIPHER_ALGO_AES192 /* 8 */ GCRY_CIPHER_AES192
#define CIPHER_ALGO_AES256 /* 9 */ GCRY_CIPHER_AES256
#define CIPHER_ALGO_RIJNDAEL CIPHER_ALGO_AES
#define CIPHER_ALGO_RIJNDAEL192 CIPHER_ALGO_AES192
#define CIPHER_ALGO_RIJNDAEL256 CIPHER_ALGO_AES256
#define CIPHER_ALGO_TWOFISH /* 10 */ GCRY_CIPHER_TWOFISH /* 256 bit */
/* Note: Camellia ids don't match those used by libgcrypt. */
#define CIPHER_ALGO_CAMELLIA128 11
#define CIPHER_ALGO_CAMELLIA192 12
#define CIPHER_ALGO_CAMELLIA256 13
#define CIPHER_ALGO_DUMMY 110 /* No encryption at all. */
#define PUBKEY_ALGO_RSA /* 1 */ GCRY_PK_RSA
#define PUBKEY_ALGO_RSA_E /* 2 */ GCRY_PK_RSA_E /* RSA encrypt only. */
#define PUBKEY_ALGO_RSA_S /* 3 */ GCRY_PK_RSA_S /* RSA sign only. */
#define PUBKEY_ALGO_ELGAMAL_E /* 16 */ GCRY_PK_ELG_E /* Elgamal encr only */
#define PUBKEY_ALGO_DSA /* 17 */ GCRY_PK_DSA
#define PUBKEY_ALGO_ECDH 18
#define PUBKEY_ALGO_ECDSA 19
#define PUBKEY_ALGO_ELGAMAL /* 20 */ GCRY_PK_ELG /* Elgamal encr+sign */
#define PUBKEY_USAGE_SIG GCRY_PK_USAGE_SIGN /* Good for signatures. */
#define PUBKEY_USAGE_ENC GCRY_PK_USAGE_ENCR /* Good for encryption. */
#define PUBKEY_USAGE_CERT GCRY_PK_USAGE_CERT /* Also good to certify keys. */
#define PUBKEY_USAGE_AUTH GCRY_PK_USAGE_AUTH /* Good for authentication. */
#define PUBKEY_USAGE_UNKNOWN GCRY_PK_USAGE_UNKN /* Unknown usage flag. */
#define DIGEST_ALGO_MD5 /* 1 */ GCRY_MD_MD5
#define DIGEST_ALGO_SHA1 /* 2 */ GCRY_MD_SHA1
#define DIGEST_ALGO_RMD160 /* 3 */ GCRY_MD_RMD160
/* 4, 5, 6, and 7 are reserved */
#define DIGEST_ALGO_SHA256 /* 8 */ GCRY_MD_SHA256
#define DIGEST_ALGO_SHA384 /* 9 */ GCRY_MD_SHA384
#define DIGEST_ALGO_SHA512 /* 10 */ GCRY_MD_SHA512
/* SHA224 is only available in libgcrypt 1.4.0; thus we
can't use the GCRY macro here. */
#define DIGEST_ALGO_SHA224 /* 11 */ 11 /* GCRY_MD_SHA224 */
#define COMPRESS_ALGO_NONE 0
#define COMPRESS_ALGO_ZIP 1
#define COMPRESS_ALGO_ZLIB 2
#define COMPRESS_ALGO_BZIP2 3
#define is_RSA(a) ((a)==PUBKEY_ALGO_RSA || (a)==PUBKEY_ALGO_RSA_E \
|| (a)==PUBKEY_ALGO_RSA_S )
#define is_ELGAMAL(a) ((a)==PUBKEY_ALGO_ELGAMAL_E)
#define is_DSA(a) ((a)==PUBKEY_ALGO_DSA)
/* The data encryption key object. */
typedef struct
{
int algo;
int keylen;
int algo_info_printed;
int use_mdc;
int symmetric;
byte key[32]; /* This is the largest used keylen (256 bit). */
char s2k_cacheid[1+16+1];
} DEK;
/* Constants to allocate static MPI arrays. */
#define PUBKEY_MAX_NPKEY 4
#define PUBKEY_MAX_NSKEY 6
#define PUBKEY_MAX_NSIG 2
#define PUBKEY_MAX_NENC 2
#endif /*G10_CIPHER_H*/
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