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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "crypto_sign.h"
char *msg = "Hello World";
int main(int argc, char *argv[]) {
unsigned char sk[SECRETKEYBYTES], vk[PUBLICKEYBYTES];
unsigned char *sigmsg, *newmsg;
unsigned long long sigmsglen, newmsglen;
int ret;
crypto_sign_keypair(vk, sk);
printf("got keypair\n");
sigmsg = malloc(strlen(msg)+1+BYTES);
if (!sigmsg)
return 1;
crypto_sign(sigmsg, &sigmsglen, (unsigned char *)msg, strlen(msg)+1, sk);
printf("got signature\n");
if (sigmsglen != strlen(msg)+1+BYTES)
return 2;
newmsg = malloc(sigmsglen);
if (!newmsg)
return 3;
ret = crypto_sign_open(newmsg, &newmsglen, sigmsg, sigmsglen, vk);
printf("verified signature\n");
if (ret == 0)
printf("good!\n");
else
printf("bad\n");
sigmsg[0] ^= 0x01;
ret = crypto_sign_open(newmsg, &newmsglen, sigmsg, sigmsglen, vk);
if (ret == 0)
printf("bad: failed to detect simple corruption\n");
else
printf("good: detected simple corruption\n");
return 0;
}
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