mirror of
https://github.com/guanzhi/GmSSL.git
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43 lines
1.0 KiB
C
43 lines
1.0 KiB
C
#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_CBC_CTX cbc_ctx;
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unsigned char key[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 iv[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 inbuf[1024];
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unsigned char outbuf[1024 + 32];
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ssize_t inlen;
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size_t outlen;
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if (sm4_cbc_decrypt_init(&cbc_ctx, key, iv) != 1) {
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fprintf(stderr, "%s %d: error\n", __FILE__, __LINE__);
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return 1;
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}
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while ((inlen = fread(inbuf, 1, sizeof(inbuf), stdin)) > 0) {
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if (sm4_cbc_decrypt_update(&cbc_ctx, inbuf, inlen, outbuf, &outlen) != 1) {
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fprintf(stderr, "%s %d: error\n", __FILE__, __LINE__);
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return 1;
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}
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fwrite(outbuf, 1, outlen, stdout);
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}
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if (sm4_cbc_decrypt_finish(&cbc_ctx, outbuf, &outlen) != 1) {
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fprintf(stderr, "%s %d: error\n", __FILE__, __LINE__);
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return 1;
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}
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fwrite(outbuf, 1, outlen, stdout);
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return 0;
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}
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