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des.h
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.] */
#ifndef OPENSSL_HEADER_DES_H
#define OPENSSL_HEADER_DES_H
#include <openssl/base.h>
#if defined(__cplusplus)
extern "C" {
#endif
/* DES. */
typedef struct DES_cblock_st {
uint8_t bytes[8];
} DES_cblock;
typedef struct DES_ks {
uint32_t subkeys[16][2];
} DES_key_schedule;
#define DES_KEY_SZ (sizeof(DES_cblock))
#define DES_SCHEDULE_SZ (sizeof(DES_key_schedule))
#define DES_ENCRYPT 1
#define DES_DECRYPT 0
#define DES_CBC_MODE 0
#define DES_PCBC_MODE 1
/* DES_set_key performs a key schedule and initialises |schedule| with |key|. */
OPENSSL_EXPORT void DES_set_key(const DES_cblock *key,
DES_key_schedule *schedule);
/* DES_set_odd_parity sets the parity bits (the least-significant bits in each
* byte) of |key| given the other bits in each byte. */
OPENSSL_EXPORT void DES_set_odd_parity(DES_cblock *key);
/* DES_ecb_encrypt encrypts (or decrypts, if |is_encrypt| is |DES_DECRYPT|) a
* single DES block (8 bytes) from in to out, using the key configured in
* |schedule|. */
OPENSSL_EXPORT void DES_ecb_encrypt(const DES_cblock *in, DES_cblock *out,
const DES_key_schedule *schedule,
int is_encrypt);
/* DES_ncbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
* bytes from |in| to |out| with DES in CBC mode. */
OPENSSL_EXPORT void DES_ncbc_encrypt(const uint8_t *in, uint8_t *out,
size_t len,
const DES_key_schedule *schedule,
DES_cblock *ivec, int enc);
/* DES_ecb3_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) a single
* block (8 bytes) of data from |input| to |output| using 3DES. */
OPENSSL_EXPORT void DES_ecb3_encrypt(const DES_cblock *input,
DES_cblock *output,
const DES_key_schedule *ks1,
const DES_key_schedule *ks2,
const DES_key_schedule *ks3,
int enc);
/* DES_ede3_cbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
* bytes from |in| to |out| with 3DES in CBC mode. 3DES uses three keys, thus
* the function takes three different |DES_key_schedule|s. */
OPENSSL_EXPORT void DES_ede3_cbc_encrypt(const uint8_t *in, uint8_t *out,
size_t len,
const DES_key_schedule *ks1,
const DES_key_schedule *ks2,
const DES_key_schedule *ks3,
DES_cblock *ivec, int enc);
/* DES_ede2_cbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
* bytes from |in| to |out| with 3DES in CBC mode. With this keying option, the
* first and third 3DES keys are identical. Thus, this function takes only two
* different |DES_key_schedule|s. */
OPENSSL_EXPORT void DES_ede2_cbc_encrypt(const uint8_t *in, uint8_t *out,
size_t len,
const DES_key_schedule *ks1,
const DES_key_schedule *ks2,
DES_cblock *ivec, int enc);
/* Deprecated functions. */
/* DES_set_key_unchecked calls |DES_set_key|. */
OPENSSL_EXPORT void DES_set_key_unchecked(const DES_cblock *key,
DES_key_schedule *schedule);
OPENSSL_EXPORT void DES_ede3_cfb64_encrypt(const uint8_t *in, uint8_t *out,
long length, DES_key_schedule *ks1,
DES_key_schedule *ks2,
DES_key_schedule *ks3,
DES_cblock *ivec, int *num, int enc);
OPENSSL_EXPORT void DES_ede3_cfb_encrypt(const uint8_t *in, uint8_t *out,
int numbits, long length,
DES_key_schedule *ks1,
DES_key_schedule *ks2,
DES_key_schedule *ks3,
DES_cblock *ivec, int enc);
/* Private functions.
*
* These functions are only exported for use in |decrepit|. */
OPENSSL_EXPORT void DES_decrypt3(uint32_t *data, const DES_key_schedule *ks1,
const DES_key_schedule *ks2,
const DES_key_schedule *ks3);
OPENSSL_EXPORT void DES_encrypt3(uint32_t *data, const DES_key_schedule *ks1,
const DES_key_schedule *ks2,
const DES_key_schedule *ks3);
#if defined(__cplusplus)
} /* extern C */
#endif
#endif /* OPENSSL_HEADER_DES_H */