93 rader
2.2 KiB
C
93 rader
2.2 KiB
C
#include <stdio.h>
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#include <string.h>
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#include "../xmss.h"
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#include "../params.h"
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#include "../randombytes.h"
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#define MLEN 3491
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#define SIGNATURES 5
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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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unsigned char sk[(XMSS_INDEX_LEN+4*XMSS_N)];
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unsigned char pk[2*XMSS_N];
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unsigned long long signature_length = XMSS_INDEX_LEN + XMSS_N + (XMSS_D*XMSS_WOTS_KEYSIZE) + XMSS_FULLHEIGHT*XMSS_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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printf("keypair\n");
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xmssmt_keypair(pk, sk);
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// check pub_seed in SK
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for (i = 0; i < XMSS_N; i++) {
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if (pk[XMSS_N+i] != sk[XMSS_INDEX_LEN+2*XMSS_N+i]) printf("pk.pub_seed != sk.pub_seed %llu",i);
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if (pk[i] != sk[XMSS_INDEX_LEN+3*XMSS_N+i]) printf("pk.root != sk.root %llu",i);
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}
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printf("pk checked\n");
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unsigned int idx_len = XMSS_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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randombytes(mi, MLEN);
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printf("sign\n");
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xmssmt_sign(sk, sm, &smlen, mi, MLEN);
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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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for (j = 0; j < smlen; j++) {
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printf("%02X", sm[j]);
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}
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printf("\n");
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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);
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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);
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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);
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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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return 0;
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}
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