ref: 009439541d2c6e8af2596f8fb1b4df85861fd212
dir: /third_party/boringssl/src/crypto/des/internal.h/
/* 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_INTERNAL_H
#define OPENSSL_HEADER_DES_INTERNAL_H
#include <openssl/base.h>
#include <openssl/des.h>
#include "../internal.h"
#if defined(__cplusplus)
extern "C" {
#endif
// TODO(davidben): Ideally these macros would be replaced with
// |CRYPTO_load_u32_le| and |CRYPTO_store_u32_le|.
#define c2l(c, l) \
do { \
(l) = ((uint32_t)(*((c)++))); \
(l) |= ((uint32_t)(*((c)++))) << 8L; \
(l) |= ((uint32_t)(*((c)++))) << 16L; \
(l) |= ((uint32_t)(*((c)++))) << 24L; \
} while (0)
#define l2c(l, c) \
do { \
*((c)++) = (unsigned char)(((l)) & 0xff); \
*((c)++) = (unsigned char)(((l) >> 8L) & 0xff); \
*((c)++) = (unsigned char)(((l) >> 16L) & 0xff); \
*((c)++) = (unsigned char)(((l) >> 24L) & 0xff); \
} while (0)
// NOTE - c is not incremented as per c2l
#define c2ln(c, l1, l2, n) \
do { \
(c) += (n); \
(l1) = (l2) = 0; \
switch (n) { \
case 8: \
(l2) = ((uint32_t)(*(--(c)))) << 24L; \
OPENSSL_FALLTHROUGH; \
case 7: \
(l2) |= ((uint32_t)(*(--(c)))) << 16L; \
OPENSSL_FALLTHROUGH; \
case 6: \
(l2) |= ((uint32_t)(*(--(c)))) << 8L; \
OPENSSL_FALLTHROUGH; \
case 5: \
(l2) |= ((uint32_t)(*(--(c)))); \
OPENSSL_FALLTHROUGH; \
case 4: \
(l1) = ((uint32_t)(*(--(c)))) << 24L; \
OPENSSL_FALLTHROUGH; \
case 3: \
(l1) |= ((uint32_t)(*(--(c)))) << 16L; \
OPENSSL_FALLTHROUGH; \
case 2: \
(l1) |= ((uint32_t)(*(--(c)))) << 8L; \
OPENSSL_FALLTHROUGH; \
case 1: \
(l1) |= ((uint32_t)(*(--(c)))); \
} \
} while (0)
// NOTE - c is not incremented as per l2c
#define l2cn(l1, l2, c, n) \
do { \
(c) += (n); \
switch (n) { \
case 8: \
*(--(c)) = (unsigned char)(((l2) >> 24L) & 0xff); \
OPENSSL_FALLTHROUGH; \
case 7: \
*(--(c)) = (unsigned char)(((l2) >> 16L) & 0xff); \
OPENSSL_FALLTHROUGH; \
case 6: \
*(--(c)) = (unsigned char)(((l2) >> 8L) & 0xff); \
OPENSSL_FALLTHROUGH; \
case 5: \
*(--(c)) = (unsigned char)(((l2)) & 0xff); \
OPENSSL_FALLTHROUGH; \
case 4: \
*(--(c)) = (unsigned char)(((l1) >> 24L) & 0xff); \
OPENSSL_FALLTHROUGH; \
case 3: \
*(--(c)) = (unsigned char)(((l1) >> 16L) & 0xff); \
OPENSSL_FALLTHROUGH; \
case 2: \
*(--(c)) = (unsigned char)(((l1) >> 8L) & 0xff); \
OPENSSL_FALLTHROUGH; \
case 1: \
*(--(c)) = (unsigned char)(((l1)) & 0xff); \
} \
} while (0)
// Correctly-typed versions of DES functions.
//
// See https://crbug.com/boringssl/683.
void DES_set_key_ex(const uint8_t key[8], DES_key_schedule *schedule);
void DES_ecb_encrypt_ex(const uint8_t in[8], uint8_t out[8],
const DES_key_schedule *schedule, int is_encrypt);
void DES_ncbc_encrypt_ex(const uint8_t *in, uint8_t *out, size_t len,
const DES_key_schedule *schedule, uint8_t ivec[8],
int enc);
void DES_ecb3_encrypt_ex(const uint8_t input[8], uint8_t output[8],
const DES_key_schedule *ks1,
const DES_key_schedule *ks2,
const DES_key_schedule *ks3, int enc);
void DES_ede3_cbc_encrypt_ex(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, uint8_t ivec[8],
int enc);
// Private functions.
//
// These functions are only exported for use in |decrepit|.
OPENSSL_EXPORT void DES_decrypt3(uint32_t data[2], const DES_key_schedule *ks1,
const DES_key_schedule *ks2,
const DES_key_schedule *ks3);
OPENSSL_EXPORT void DES_encrypt3(uint32_t data[2], 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_INTERNAL_H