99 lines
2.3 KiB
C
99 lines
2.3 KiB
C
#include <stdio.h>
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#include <string.h>
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#include "../xmss.h"
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#define MLEN 3491
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#define SIGNATURES 1024
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unsigned char mi[MLEN];
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unsigned long long smlen;
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unsigned long long mlen;
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int main()
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{
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int r;
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unsigned long long i,j;
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int m = 32;
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int n = 32;
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int h = 10;
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int d = 2;
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int w = 16;
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xmssmt_params p;
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xmssmt_params *params = &p;
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xmssmt_set_params(params, m, n, h, d, w);
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unsigned char sk[(params->index_len+2*n+m)];
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unsigned char pk[2*n];
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unsigned long long signature_length = params->index_len + m + (d*params->xmss_par.wots_par.keysize) + h*n;
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unsigned char mo[MLEN+signature_length];
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unsigned char sm[MLEN+signature_length];
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FILE *urandom = fopen("/dev/urandom", "r");
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for(i=0;i<MLEN;i++) mi[i] = fgetc(urandom);
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printf("keypair\n");
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xmssmt_keypair(pk, sk, params);
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// check pub_seed in SK
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for(i=0;i<n;i++)
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{
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if(pk[n+i] != sk[params->index_len+m+n+i]) printf("pk.pub_seed != sk.pub_seed %llu",i);
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}
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printf("pk checked\n");
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unsigned int idx_len = params->index_len;
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// check index
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unsigned long long idx = 0;
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for(i = 0; i < idx_len; i++){
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idx |= ((unsigned long long)sk[i]) << 8*(idx_len - 1 - i);
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}
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if(idx) printf("\nidx != 0: %llu\n",idx);
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for(i=0;i<SIGNATURES;i++){
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printf("sign\n");
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xmssmt_sign(sk, sm, &smlen, mi, MLEN, params);
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idx = 0;
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for(j = 0; j < idx_len; j++){
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idx += ((unsigned long long)sm[j]) << 8*(idx_len - 1 - j);
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}
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printf("\nidx = %llu\n",idx);
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r = memcmp(mi, sm+signature_length,MLEN);
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printf("%d\n", r);
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/* Test valid signature */
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printf("verify\n");
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r = xmssmt_sign_open(mo, &mlen, sm, smlen, pk, params);
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printf("%d\n", r);
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r = memcmp(mi,mo,MLEN);
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printf("%d\n", r);
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printf("%llu\n", MLEN-mlen);
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/* Test with modified message */
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sm[52] ^= 1;
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r = xmssmt_sign_open(mo, &mlen, sm, smlen, pk, params);
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printf("%d\n", r+1);
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r = memcmp(mi,mo,MLEN);
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printf("%d\n", (r!=0) - 1);
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printf("%llu\n", mlen+1);
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/* Test with modified signature */
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sm[260] ^= 1;
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sm[52] ^= 1;
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sm[2] ^= 1;
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r = xmssmt_sign_open(mo, &mlen, sm, smlen, pk, params);
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printf("%d\n", r+1);
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r = memcmp(mi,mo,MLEN);
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printf("%d\n", (r!=0) - 1);
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printf("%llu\n", mlen+1);
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}
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fclose(urandom);
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return 0;
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}
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