139 lines
5.8 KiB
C
139 lines
5.8 KiB
C
// Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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#ifndef OPENSSL_HEADER_DES_INTERNAL_H
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#define OPENSSL_HEADER_DES_INTERNAL_H
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#include <openssl/base.h>
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#include <openssl/des.h>
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#include "../internal.h"
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#if defined(__cplusplus)
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extern "C" {
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#endif
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// TODO(davidben): Ideally these macros would be replaced with
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// |CRYPTO_load_u32_le| and |CRYPTO_store_u32_le|.
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#define c2l(c, l) \
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do { \
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(l) = ((uint32_t)(*((c)++))); \
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(l) |= ((uint32_t)(*((c)++))) << 8L; \
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(l) |= ((uint32_t)(*((c)++))) << 16L; \
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(l) |= ((uint32_t)(*((c)++))) << 24L; \
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} while (0)
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#define l2c(l, c) \
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do { \
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*((c)++) = (unsigned char)(((l)) & 0xff); \
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*((c)++) = (unsigned char)(((l) >> 8L) & 0xff); \
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*((c)++) = (unsigned char)(((l) >> 16L) & 0xff); \
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*((c)++) = (unsigned char)(((l) >> 24L) & 0xff); \
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} while (0)
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// NOTE - c is not incremented as per c2l
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#define c2ln(c, l1, l2, n) \
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do { \
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(c) += (n); \
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(l1) = (l2) = 0; \
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switch (n) { \
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case 8: \
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(l2) = ((uint32_t)(*(--(c)))) << 24L; \
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OPENSSL_FALLTHROUGH; \
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case 7: \
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(l2) |= ((uint32_t)(*(--(c)))) << 16L; \
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OPENSSL_FALLTHROUGH; \
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case 6: \
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(l2) |= ((uint32_t)(*(--(c)))) << 8L; \
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OPENSSL_FALLTHROUGH; \
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case 5: \
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(l2) |= ((uint32_t)(*(--(c)))); \
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OPENSSL_FALLTHROUGH; \
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case 4: \
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(l1) = ((uint32_t)(*(--(c)))) << 24L; \
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OPENSSL_FALLTHROUGH; \
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case 3: \
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(l1) |= ((uint32_t)(*(--(c)))) << 16L; \
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OPENSSL_FALLTHROUGH; \
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case 2: \
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(l1) |= ((uint32_t)(*(--(c)))) << 8L; \
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OPENSSL_FALLTHROUGH; \
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case 1: \
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(l1) |= ((uint32_t)(*(--(c)))); \
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} \
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} while (0)
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// NOTE - c is not incremented as per l2c
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#define l2cn(l1, l2, c, n) \
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do { \
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(c) += (n); \
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switch (n) { \
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case 8: \
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*(--(c)) = (unsigned char)(((l2) >> 24L) & 0xff); \
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OPENSSL_FALLTHROUGH; \
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case 7: \
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*(--(c)) = (unsigned char)(((l2) >> 16L) & 0xff); \
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OPENSSL_FALLTHROUGH; \
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case 6: \
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*(--(c)) = (unsigned char)(((l2) >> 8L) & 0xff); \
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OPENSSL_FALLTHROUGH; \
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case 5: \
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*(--(c)) = (unsigned char)(((l2)) & 0xff); \
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OPENSSL_FALLTHROUGH; \
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case 4: \
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*(--(c)) = (unsigned char)(((l1) >> 24L) & 0xff); \
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OPENSSL_FALLTHROUGH; \
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case 3: \
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*(--(c)) = (unsigned char)(((l1) >> 16L) & 0xff); \
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OPENSSL_FALLTHROUGH; \
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case 2: \
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*(--(c)) = (unsigned char)(((l1) >> 8L) & 0xff); \
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OPENSSL_FALLTHROUGH; \
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case 1: \
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*(--(c)) = (unsigned char)(((l1)) & 0xff); \
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} \
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} while (0)
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// Correctly-typed versions of DES functions.
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//
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// See https://crbug.com/boringssl/683.
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void DES_set_key_ex(const uint8_t key[8], DES_key_schedule *schedule);
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void DES_ecb_encrypt_ex(const uint8_t in[8], uint8_t out[8],
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const DES_key_schedule *schedule, int is_encrypt);
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void DES_ncbc_encrypt_ex(const uint8_t *in, uint8_t *out, size_t len,
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const DES_key_schedule *schedule, uint8_t ivec[8],
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int enc);
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void DES_ecb3_encrypt_ex(const uint8_t input[8], uint8_t output[8],
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const DES_key_schedule *ks1,
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const DES_key_schedule *ks2,
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const DES_key_schedule *ks3, int enc);
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void DES_ede3_cbc_encrypt_ex(const uint8_t *in, uint8_t *out, size_t len,
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const DES_key_schedule *ks1,
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const DES_key_schedule *ks2,
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const DES_key_schedule *ks3, uint8_t ivec[8],
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int enc);
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// Private functions.
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//
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// These functions are only exported for use in |decrepit|.
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OPENSSL_EXPORT void DES_decrypt3(uint32_t data[2], const DES_key_schedule *ks1,
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const DES_key_schedule *ks2,
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const DES_key_schedule *ks3);
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OPENSSL_EXPORT void DES_encrypt3(uint32_t data[2], const DES_key_schedule *ks1,
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const DES_key_schedule *ks2,
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const DES_key_schedule *ks3);
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#if defined(__cplusplus)
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} // extern C
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#endif
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#endif // OPENSSL_HEADER_DES_INTERNAL_H
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