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45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
#ifndef HEADER_SMS4_H
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#define HEADER_SMS4_H
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#define SMS4_KEY_LENGTH 16
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#define SMS4_BLOCK_SIZE 16
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#define SMS4_NUM_ROUNDS 32
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#include <sys/types.h>
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#include <stdint.h>
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#include <string.h>
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#include "openssl/modes.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct {
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uint32_t rk[SMS4_NUM_ROUNDS];
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} sms4_key_t;
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void sms4_set_encrypt_key(sms4_key_t *key, const unsigned char *user_key);
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void sms4_set_decrypt_key(sms4_key_t *key, const unsigned char *user_key);
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void sms4_encrypt(const unsigned char *in, unsigned char *out, sms4_key_t *key);
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void sms4_ecb_encrypt(const unsigned char *in, unsigned char *out, const sms4_key_t *key, int encrypt);
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void sms4_cbc_encrypt(const unsigned char *in, unsigned char *out, size_t len,
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const sms4_key_t *key, unsigned char *ivec, int encrypt);
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void sms4_cfb128_encrypt(const unsigned char *in, unsigned char *out,
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size_t length, const sms4_key_t *key,
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unsigned char *ivec, int *num, int encrypt);
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void sms4_ofb128_encrypt(const unsigned char *in, unsigned char *out,
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size_t length, const sms4_key_t *key,
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unsigned char ivec[SMS4_BLOCK_SIZE],
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unsigned int *num);
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#define sms4_decrypt(in,out,key) sms4_encrypt(in,out,key)
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#ifdef __cplusplus
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}
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#endif
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#endif
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