96 rader
2.8 KiB
C
96 rader
2.8 KiB
C
#include <assert.h>
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#include <errno.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include "api.h"
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#include "randombytes.h"
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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_BYTES NAMESPACE(CRYPTO_BYTES)
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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_CIPHERTEXTBYTES NAMESPACE(CRYPTO_CIPHERTEXTBYTES)
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#define CRYPTO_ALGNAME NAMESPACE(CRYPTO_ALGNAME)
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#define crypto_kem_keypair NAMESPACE(crypto_kem_keypair)
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#define crypto_kem_enc NAMESPACE(crypto_kem_enc)
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#define crypto_kem_dec NAMESPACE(crypto_kem_dec)
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void nist_kat_init(unsigned char *entropy_input, unsigned char *personalization_string, int security_strength);
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static void fprintBstr(FILE *fp, const char *S, const uint8_t *A, size_t L) {
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size_t i;
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fprintf(fp, "%s", S);
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for (i = 0; i < L; i++) {
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fprintf(fp, "%02X", A[i]);
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}
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if (L == 0) {
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fprintf(fp, "00");
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}
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fprintf(fp, "\n");
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}
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int main() {
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uint8_t entropy_input[48];
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uint8_t seed[48];
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FILE *fh = stdout;
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uint8_t public_key[CRYPTO_PUBLICKEYBYTES];
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uint8_t secret_key[CRYPTO_SECRETKEYBYTES];
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uint8_t ciphertext[CRYPTO_CIPHERTEXTBYTES];
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uint8_t shared_secret_e[CRYPTO_BYTES];
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uint8_t shared_secret_d[CRYPTO_BYTES];
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int rc;
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for (uint8_t i = 0; i < 48; i++) {
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entropy_input[i] = i;
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}
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nist_kat_init(entropy_input, NULL, 256);
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fprintf(fh, "count = 0\n");
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randombytes(seed, 48);
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fprintBstr(fh, "seed = ", seed, 48);
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nist_kat_init(seed, NULL, 256);
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rc = crypto_kem_keypair(public_key, secret_key);
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if (rc != 0) {
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fprintf(stderr, "[kat_kem] %s ERROR: crypto_kem_keypair failed!\n", CRYPTO_ALGNAME);
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return -1;
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}
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fprintBstr(fh, "pk = ", public_key, CRYPTO_PUBLICKEYBYTES);
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fprintBstr(fh, "sk = ", secret_key, CRYPTO_SECRETKEYBYTES);
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rc = crypto_kem_enc(ciphertext, shared_secret_e, public_key);
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if (rc != 0) {
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fprintf(stderr, "[kat_kem] %s ERROR: crypto_kem_enc failed!\n", CRYPTO_ALGNAME);
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return -2;
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}
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fprintBstr(fh, "ct = ", ciphertext, CRYPTO_CIPHERTEXTBYTES);
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fprintBstr(fh, "ss = ", shared_secret_e, CRYPTO_BYTES);
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rc = crypto_kem_dec(shared_secret_d, ciphertext, secret_key);
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if (rc != 0) {
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fprintf(stderr, "[kat_kem] %s ERROR: crypto_kem_dec failed!\n", CRYPTO_ALGNAME);
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return -3;
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}
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rc = memcmp(shared_secret_e, shared_secret_d, CRYPTO_BYTES);
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if (rc != 0) {
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fprintf(stderr, "[kat_kem] %s ERROR: shared secrets are not equal\n", CRYPTO_ALGNAME);
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return -4;
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}
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return 0;
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}
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