32 lines
822 B
C
32 lines
822 B
C
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#include "arith.h"
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#include <assert.h>
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#include <openssl/sha.h>
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#include <stdlib.h>
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char *commit(fp *data, fp *random) {
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char inp_data[16];
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char *outbuf = malloc(32 * sizeof(char));
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for (int i = 0; i < 32; i++) {
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outbuf[i] = 0;
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}
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((uint64_t *)inp_data)[0] = data->val;
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((uint64_t *)inp_data)[1] = random->val;
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SHA256((unsigned char *)inp_data, 8, (unsigned char *)outbuf);
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return outbuf;
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};
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void check_open(fp *data, fp *random, char *commitment) {
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char inp_data[16];
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char *outbuf = malloc(32 * sizeof(char));
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for (int i = 0; i < 32; i++) {
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outbuf[i] = 0;
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}
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((uint64_t *)inp_data)[0] = data->val;
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((uint64_t *)inp_data)[1] = random->val;
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SHA256((unsigned char *)inp_data, 8, (unsigned char *)outbuf);
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for (int i = 0; i < 32; i++) {
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assert(outbuf[i] == commitment[i]);
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}
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};
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