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Diffstat (limited to 'des-compat.h')
| -rw-r--r-- | des-compat.h | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/des-compat.h b/des-compat.h deleted file mode 100644 index bda4e759..00000000 --- a/des-compat.h +++ /dev/null @@ -1,162 +0,0 @@ -/* des-compat.h - - The des block cipher, old libdes/openssl-style interface. - - Copyright (C) 2001 Niels Möller - - This file is part of GNU Nettle. - - GNU Nettle is free software: you can redistribute it and/or - modify it under the terms of either: - - * the GNU Lesser General Public License as published by the Free - Software Foundation; either version 3 of the License, or (at your - option) any later version. - - or - - * 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. - - or both in parallel, as here. - - GNU Nettle 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 copies of the GNU General Public License and - the GNU Lesser General Public License along with this program. If - not, see http://www.gnu.org/licenses/. -*/ - -#ifndef NETTLE_DES_COMPAT_H_INCLUDED -#define NETTLE_DES_COMPAT_H_INCLUDED - -/* According to Assar, des_set_key, des_set_key_odd_parity, - * des_is_weak_key, plus the encryption functions (des_*_encrypt and - * des_cbc_cksum) would be a pretty useful subset. */ - -/* NOTE: This is quite experimental, and not all functions are - * implemented. Contributions, in particular test cases are welcome. */ - -#include "des.h" - -#ifdef __cplusplus -extern "C" { -#endif - -/* We use some name mangling, to avoid collisions with either other - * nettle functions or with libcrypto. */ - -#define des_ecb3_encrypt nettle_openssl_des_ecb3_encrypt -#define des_cbc_cksum nettle_openssl_des_cbc_cksum -#define des_ncbc_encrypt nettle_openssl_des_ncbc_encrypt -#define des_cbc_encrypt nettle_openssl_des_cbc_encrypt -#define des_ecb_encrypt nettle_openssl_des_ecb_encrypt -#define des_ede3_cbc_encrypt nettle_openssl_des_ede3_cbc_encrypt -#define des_set_odd_parity nettle_openssl_des_set_odd_parity -#define des_check_key nettle_openssl_des_check_key -#define des_key_sched nettle_openssl_des_key_sched -#define des_is_weak_key nettle_openssl_des_is_weak_key - -/* An extra alias */ -#undef des_set_key -#define des_set_key nettle_openssl_des_key_sched - -enum { DES_DECRYPT = 0, DES_ENCRYPT = 1 }; - -/* Types */ -typedef uint32_t DES_LONG; - -/* Note: Typedef:ed arrays should be avoided, but they're used here - * for compatibility. */ -typedef struct des_ctx des_key_schedule[1]; - -typedef uint8_t des_cblock[DES_BLOCK_SIZE]; -/* Note: The proper definition, - - typedef const uint8_t const_des_cblock[DES_BLOCK_SIZE]; - - would have worked, *if* all the prototypes had used arguments like - foo(const_des_cblock src, des_cblock dst), letting argument arrays - "decay" into pointers of type uint8_t * and const uint8_t *. - - But since openssl's prototypes use *pointers* const_des_cblock *src, - des_cblock *dst, this ends up in type conflicts, and the workaround - is to not use const at all. -*/ -#define const_des_cblock des_cblock - -/* Aliases */ -#define des_ecb2_encrypt(i,o,k1,k2,e) \ - des_ecb3_encrypt((i),(o),(k1),(k2),(k1),(e)) - -#define des_ede2_cbc_encrypt(i,o,l,k1,k2,iv,e) \ - des_ede3_cbc_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(e)) - -/* Global flag */ -extern int des_check_key; - -/* Prototypes */ - -/* Typing is a little confusing. Since both des_cblock and - des_key_schedule are typedef:ed arrays, it automatically decay to - a pointers. - - But the functions are declared taking pointers to des_cblock, i.e. - pointers to arrays. And on the other hand, they take plain - des_key_schedule arguments, which is equivalent to pointers to - struct des_ctx. */ -void -des_ecb3_encrypt(const_des_cblock *src, des_cblock *dst, - des_key_schedule k1, - des_key_schedule k2, - des_key_schedule k3, int enc); - -/* des_cbc_cksum in libdes returns a 32 bit integer, representing the - * latter half of the output block, using little endian byte order. */ -uint32_t -des_cbc_cksum(const uint8_t *src, des_cblock *dst, - long length, des_key_schedule ctx, - const_des_cblock *iv); - -/* NOTE: Doesn't update iv. */ -void -des_cbc_encrypt(const_des_cblock *src, des_cblock *dst, long length, - des_key_schedule ctx, const_des_cblock *iv, - int enc); - -/* Similar, but updates iv. */ -void -des_ncbc_encrypt(const_des_cblock *src, des_cblock *dst, long length, - des_key_schedule ctx, des_cblock *iv, - int enc); - -void -des_ecb_encrypt(const_des_cblock *src, des_cblock *dst, - des_key_schedule ctx, int enc); - -void -des_ede3_cbc_encrypt(const_des_cblock *src, des_cblock *dst, long length, - des_key_schedule k1, - des_key_schedule k2, - des_key_schedule k3, - des_cblock *iv, - int enc); - -int -des_set_odd_parity(des_cblock *key); - -int -des_key_sched(const_des_cblock *key, des_key_schedule ctx); - -int -des_is_weak_key(const_des_cblock *key); - -#ifdef __cplusplus -} -#endif - -#endif /* NETTLE_DES_COMPAT_H_INCLUDED */ |