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- /*
- * Copyright 2014-2022 The GmSSL Project. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the License); you may
- * not use this file except in compliance with the License.
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- */
- /* FIPS PUB 46-3 "Data Encryption Standard (DES)" */
- #ifndef GMSSL_DES_H
- #define GMSSL_DES_H
- #include <stdint.h>
- #include <stdlib.h>
- #ifdef __cplusplus
- extern "C" {
- #endif
- #define DES_KEY_BITS 56
- #define DES_BLOCK_BITS 64
- #define DES_KEY_SIZE ((DES_KEY_BITS)/7)
- #define DES_BLOCK_SIZE (DES_BLOCK_BITS/8)
- #define DES_RK_BITS 48
- #define DES_RK_SIZE (DES_RK_BITS/8)
- #define DES_ROUNDS 16
- #define DES_EDE_KEY_SIZE (DES_KEY_SIZE * 3)
- typedef struct {
- uint64_t rk[DES_ROUNDS];
- } DES_KEY;
- void des_set_encrypt_key(DES_KEY *key, const uint8_t raw_key[DES_KEY_SIZE]);
- void des_set_decrypt_key(DES_KEY *key, const uint8_t raw_key[DES_KEY_SIZE]);
- void des_encrypt(DES_KEY *key, const uint8_t in[DES_BLOCK_SIZE], uint8_t out[DES_BLOCK_SIZE]);
- typedef struct {
- DES_KEY K[3];
- } DES_EDE_KEY;
- void des_ede_set_encrypt_key(DES_EDE_KEY *key, const uint8_t raw_key[DES_EDE_KEY_SIZE]);
- void des_ede_set_decrypt_key(DES_EDE_KEY *key, const uint8_t raw_key[DES_EDE_KEY_SIZE]);
- void des_ede_encrypt(DES_EDE_KEY *key, const uint8_t in[DES_BLOCK_SIZE], uint8_t out[DES_BLOCK_SIZE]);
- #ifdef __cplusplus
- }
- #endif
- #endif
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