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