mirror of
https://github.com/guanzhi/GmSSL.git
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66 lines
1.3 KiB
C
66 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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// sm4 demo1: encrypt and decrypt a block of message (16 bytes)
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <gmssl/sm4.h>
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int main(void)
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{
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SM4_KEY sm4_key;
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unsigned char key[16] = {
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0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,
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0x01,0xf2,0x03,0x04,0x05,0x06,0x07,0x08,
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};
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unsigned char mbuf[16] = {
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0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,
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0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,
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};
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unsigned char cbuf[16];
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unsigned char pbuf[16];
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int i;
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printf("key: ");
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for (i = 0; i < sizeof(key); i++) {
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printf("%02X", key[i]);
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}
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printf("\n");
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printf("plaintext: ");
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for (i = 0; i < sizeof(mbuf); i++) {
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printf("%02X", mbuf[i]);
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}
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printf("\n");
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sm4_set_encrypt_key(&sm4_key, key);
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sm4_encrypt(&sm4_key, mbuf, cbuf);
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printf("ciphertext: ");
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for (i = 0; i < sizeof(cbuf); i++) {
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printf("%02X", cbuf[i]);
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}
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printf("\n");
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sm4_set_decrypt_key(&sm4_key, key);
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sm4_decrypt(&sm4_key, cbuf, pbuf);
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printf("decrypted: ");
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for (i = 0; i < sizeof(pbuf); i++) {
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printf("%02X", pbuf[i]);
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}
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printf("\n");
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return 0;
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}
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