mirror of
https://github.com/guanzhi/GmSSL.git
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106 lines
2.2 KiB
C
106 lines
2.2 KiB
C
/*
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* Copyright 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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#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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#include <gmssl/rand.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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unsigned char iv[16];
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unsigned char mbuf[32] = {
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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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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[32] = {0};
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unsigned char pbuf[32] = {0};
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size_t mlen1 = 20, mlen2 = 16;
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size_t clen1, clen2;
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size_t plen1, plen2;
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int i;
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rand_bytes(key, sizeof(key));
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rand_bytes(iv, sizeof(iv));
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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("iv: ");
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for (i = 0; i < sizeof(iv); i++) {
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printf("%02X", iv[i]);
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}
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printf("\n");
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printf("sm4_cbc_pading encrypt %zu bytes\n", mlen1);
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printf("plaintext: ");
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for (i = 0; i < mlen1; 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_cbc_padding_encrypt(&sm4_key, iv, mbuf, mlen1, cbuf, &clen1);
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printf("ciphertext: ");
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for (i = 0; i < clen1; 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_cbc_padding_decrypt(&sm4_key, iv, cbuf, clen1, pbuf, &plen1);
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printf("decrypted: ");
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for (i = 0; i < plen1; i++) {
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printf("%02X", pbuf[i]);
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}
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printf("\n");
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printf("sm4_cbc_pading encrypt %zu bytes\n", mlen2);
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printf("plaintext: ");
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for (i = 0; i < mlen2; 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_cbc_padding_encrypt(&sm4_key, iv, mbuf, mlen2, cbuf, &clen2);
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printf("ciphertext: ");
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for (i = 0; i < clen2; 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_cbc_padding_decrypt(&sm4_key, iv, cbuf, clen2, pbuf, &plen2);
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printf("decrypted: ");
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for (i = 0; i < plen2; 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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