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* The des block cipher, libdes/openssl-style interface.
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/* nettle, low-level cryptographics library
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* Copyright (C) 2001 Niels M�ller
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* The nettle library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or (at your
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* option) any later version.
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* The nettle library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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* License for more details.
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* You should have received a copy of the GNU Lesser General Public License
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* along with the nettle library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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#ifndef NETTLE_DES_COMPAT_H_INCLUDED
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#define NETTLE_DES_COMPAT_H_INCLUDED
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/* According to Assar, des_set_key, des_set_key_odd_parity,
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* des_is_weak_key, plus the encryption functions (des_*_encrypt and
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* des_cbc_cksum) would be a pretty useful subset. */
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/* NOTE: This is quite experimental, and not all functions are
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* implemented. Contributions, in particular test cases are welcome. */
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/* We use some name mangling, to avoid collisions with either other
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* nettle functions or with libcrypto. */
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#define des_ecb3_encrypt nettle_openssl_des_ecb3_encrypt
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#define des_cbc_cksum nettle_openssl_des_cbc_cksum
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#define des_ncbc_encrypt nettle_openssl_des_ncbc_encrypt
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#define des_cbc_encrypt nettle_openssl_des_cbc_encrypt
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#define des_ecb_encrypt nettle_openssl_des_ecb_encrypt
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#define des_ede3_cbc_encrypt nettle_openssl_des_ede3_cbc_encrypt
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#define des_set_odd_parity nettle_openssl_des_set_odd_parity
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#define des_check_key nettle_openssl_des_check_key
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#define des_key_sched nettle_openssl_des_key_sched
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#define des_is_weak_key nettle_openssl_des_is_weak_key
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#define des_set_key nettle_openssl_des_key_sched
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enum { DES_DECRYPT = 0, DES_ENCRYPT = 1 };
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/* NOTE: Typedef:ed arrays should be avoided, but they're used here
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* for compatibility. */
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typedef uint32_t DES_LONG;
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typedef struct des_ctx des_key_schedule[1];
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typedef uint8_t des_cblock[DES_BLOCK_SIZE];
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#define des_ecb2_encrypt(i,o,k1,k2,e) \
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des_ecb3_encrypt((i),(o),(k1),(k2),(k1),(e))
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#define des_ede2_cbc_encrypt(i,o,l,k1,k2,iv,e) \
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des_ede3_cbc_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(e))
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extern int des_check_key;
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/* Typing is a little confusing. Since both des_cblock and
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des_key_schedule are typedef:ed arrays, it automatically decay to
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But the functions are declared taking pointers to des_cblock, i.e.
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pointers to arrays. And on the other hand, they take plain
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des_key_schedule arguments, which is equivalent to pointers to
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des_ecb3_encrypt(const des_cblock *src, des_cblock *dst,
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des_key_schedule k3, int enc);
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/* des_cbc_cksum in libdes returns a 32 bit integer, representing the
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* latter half of the output block, using little endian byte order. */
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des_cbc_cksum(const des_cblock *src, des_cblock *dst,
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long length, des_key_schedule ctx,
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const des_cblock *iv);
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/* NOTE: Doesn't update iv. */
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des_cbc_encrypt(const des_cblock *src, des_cblock *dst, long length,
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des_key_schedule ctx, const des_cblock *iv,
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/* Similar, but updates iv. */
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des_ncbc_encrypt(const des_cblock *src, des_cblock *dst, long length,
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des_key_schedule ctx, des_cblock *iv,
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des_ecb_encrypt(const des_cblock *src, des_cblock *dst,
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des_key_schedule ctx, int enc);
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des_ede3_cbc_encrypt(const des_cblock *src, des_cblock *dst, long length,
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des_set_odd_parity(des_cblock *key);
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des_key_sched(const des_cblock *key, des_key_schedule ctx);
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des_is_weak_key(const des_cblock *key);
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#endif /* NETTLE_DES_COMPAT_H_INCLUDED */
added
removed
des-compat.h
