mirror of
https://github.com/henrydcase/pqc.git
synced 2024-11-29 19:01:22 +00:00
82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
#include <stddef.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include "api.h"
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#include "randombytes.h"
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#define MAXMLEN 2048
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static void printbytes(const uint8_t *x, size_t xlen) {
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size_t i;
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for (i = 0; i < xlen; i++) {
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printf("%02x", x[i]);
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}
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printf("\n");
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}
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// https://stackoverflow.com/a/1489985/1711232
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#define PASTER(x, y) x##_##y
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#define EVALUATOR(x, y) PASTER(x, y)
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#define NAMESPACE(fun) EVALUATOR(PQCLEAN_NAMESPACE, fun)
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#define CRYPTO_PUBLICKEYBYTES NAMESPACE(CRYPTO_PUBLICKEYBYTES)
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#define CRYPTO_SECRETKEYBYTES NAMESPACE(CRYPTO_SECRETKEYBYTES)
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#define CRYPTO_BYTES NAMESPACE(CRYPTO_BYTES)
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#define crypto_sign_keypair NAMESPACE(crypto_sign_keypair)
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#define crypto_sign NAMESPACE(crypto_sign)
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#define crypto_sign_open NAMESPACE(crypto_sign_open)
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#define crypto_sign_signature NAMESPACE(crypto_sign_signature)
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#define crypto_sign_verify NAMESPACE(crypto_sign_verify)
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int main(void) {
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uint8_t sk[CRYPTO_SECRETKEYBYTES];
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uint8_t pk[CRYPTO_PUBLICKEYBYTES];
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uint8_t mi[MAXMLEN];
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uint8_t sm[MAXMLEN + CRYPTO_BYTES];
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uint8_t sig[CRYPTO_BYTES];
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size_t smlen;
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size_t siglen;
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size_t mlen;
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int r;
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size_t i, k;
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/* i = 0, 1, 4, 16, 64, 256, 1024 */
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for (i = 0; i < MAXMLEN; i = (i == 0) ? i + 1 : i << 2) {
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randombytes(mi, i);
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crypto_sign_keypair(pk, sk);
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printbytes(pk, CRYPTO_PUBLICKEYBYTES);
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printbytes(sk, CRYPTO_SECRETKEYBYTES);
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crypto_sign(sm, &smlen, mi, i, sk);
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crypto_sign_signature(sig, &siglen, mi, i, sk);
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printbytes(sm, smlen);
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printbytes(sig, siglen);
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// By relying on m == sm we prevent having to allocate CRYPTO_BYTES
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// twice
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r = crypto_sign_open(sm, &mlen, sm, smlen, pk);
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r |= crypto_sign_verify(sig, siglen, mi, i, pk);
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if (r) {
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printf("ERROR: signature verification failed\n");
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return -1;
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}
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for (k = 0; k < i; k++) {
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if (sm[k] != mi[k]) {
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printf("ERROR: message recovery failed\n");
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return -1;
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}
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}
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}
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return 0;
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}
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