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108 lines
4.1 KiB
C
108 lines
4.1 KiB
C
/* cipher.h - Definitions for OpenPGP
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* Copyright (C) 1998, 1999, 2000, 2001, 2006,
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* 2007 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* GnuPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef G10_CIPHER_H
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#define G10_CIPHER_H
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#include <gcrypt.h>
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/* Macros for compatibility with older libgcrypt versions. */
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#ifndef GCRY_PK_USAGE_CERT
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# define GCRY_PK_USAGE_CERT 4
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# define GCRY_PK_USAGE_AUTH 8
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# define GCRY_PK_USAGE_UNKN 128
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#endif
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/* Constants for OpenPGP. */
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#define CIPHER_ALGO_NONE /* 0 */ GCRY_CIPHER_NONE
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#define CIPHER_ALGO_IDEA /* 1 */ GCRY_CIPHER_IDEA
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#define CIPHER_ALGO_3DES /* 2 */ GCRY_CIPHER_3DES
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#define CIPHER_ALGO_CAST5 /* 3 */ GCRY_CIPHER_CAST5
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#define CIPHER_ALGO_BLOWFISH /* 4 */ GCRY_CIPHER_BLOWFISH /* 128 bit */
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/* 5 & 6 are reserved */
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#define CIPHER_ALGO_AES /* 7 */ GCRY_CIPHER_AES
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#define CIPHER_ALGO_AES192 /* 8 */ GCRY_CIPHER_AES192
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#define CIPHER_ALGO_AES256 /* 9 */ GCRY_CIPHER_AES256
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#define CIPHER_ALGO_RIJNDAEL CIPHER_ALGO_AES
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#define CIPHER_ALGO_RIJNDAEL192 CIPHER_ALGO_AES192
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#define CIPHER_ALGO_RIJNDAEL256 CIPHER_ALGO_AES256
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#define CIPHER_ALGO_TWOFISH /* 10 */ GCRY_CIPHER_TWOFISH /* 256 bit */
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/* Note: Camellia ids don't match those used by libgcrypt. */
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#define CIPHER_ALGO_CAMELLIA128 11
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#define CIPHER_ALGO_CAMELLIA192 12
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#define CIPHER_ALGO_CAMELLIA256 13
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#define CIPHER_ALGO_DUMMY 110 /* No encryption at all. */
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#define PUBKEY_ALGO_RSA /* 1 */ GCRY_PK_RSA
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#define PUBKEY_ALGO_RSA_E /* 2 */ GCRY_PK_RSA_E /* RSA encrypt only. */
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#define PUBKEY_ALGO_RSA_S /* 3 */ GCRY_PK_RSA_S /* RSA sign only. */
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#define PUBKEY_ALGO_ELGAMAL_E /* 16 */ GCRY_PK_ELG_E /* Elgamal encr only */
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#define PUBKEY_ALGO_DSA /* 17 */ GCRY_PK_DSA
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#define PUBKEY_ALGO_ELGAMAL /* 20 */ GCRY_PK_ELG /* Elgamal encr+sign */
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#define PUBKEY_USAGE_SIG GCRY_PK_USAGE_SIGN /* Good for signatures. */
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#define PUBKEY_USAGE_ENC GCRY_PK_USAGE_ENCR /* Good for encryption. */
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#define PUBKEY_USAGE_CERT GCRY_PK_USAGE_CERT /* Also good to certify keys. */
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#define PUBKEY_USAGE_AUTH GCRY_PK_USAGE_AUTH /* Good for authentication. */
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#define PUBKEY_USAGE_UNKNOWN GCRY_PK_USAGE_UNKN /* Unknown usage flag. */
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#define DIGEST_ALGO_MD5 /* 1 */ GCRY_MD_MD5
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#define DIGEST_ALGO_SHA1 /* 2 */ GCRY_MD_SHA1
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#define DIGEST_ALGO_RMD160 /* 3 */ GCRY_MD_RMD160
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/* 4, 5, 6, and 7 are reserved */
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#define DIGEST_ALGO_SHA256 /* 8 */ GCRY_MD_SHA256
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#define DIGEST_ALGO_SHA384 /* 9 */ GCRY_MD_SHA384
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#define DIGEST_ALGO_SHA512 /* 10 */ GCRY_MD_SHA512
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/* SHA224 is only available in libgcrypt 1.4.0; thus we
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can't use the GCRY macro here. */
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#define DIGEST_ALGO_SHA224 /* 11 */ 11 /* GCRY_MD_SHA224 */
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#define COMPRESS_ALGO_NONE 0
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#define COMPRESS_ALGO_ZIP 1
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#define COMPRESS_ALGO_ZLIB 2
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#define COMPRESS_ALGO_BZIP2 3
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#define is_RSA(a) ((a)==PUBKEY_ALGO_RSA || (a)==PUBKEY_ALGO_RSA_E \
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|| (a)==PUBKEY_ALGO_RSA_S )
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#define is_ELGAMAL(a) ((a)==PUBKEY_ALGO_ELGAMAL_E)
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#define is_DSA(a) ((a)==PUBKEY_ALGO_DSA)
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/* The data encryption key object. */
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typedef struct
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{
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int algo;
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int keylen;
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int algo_info_printed;
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int use_mdc;
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int symmetric;
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byte key[32]; /* This is the largest used keylen (256 bit). */
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} DEK;
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/* Constants to allocate static MPI arrays. */
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#define PUBKEY_MAX_NPKEY 4
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#define PUBKEY_MAX_NSKEY 6
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#define PUBKEY_MAX_NSIG 2
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#define PUBKEY_MAX_NENC 2
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#endif /*G10_CIPHER_H*/
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