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#include <string>
using std::string;
#include <stdlib.h>
#include <stdio.h>
#include "crypto_secretbox.h"
#include "randombytes.h"
main()
{
int mlen;
for (mlen = 0;mlen < 1000;++mlen) {
unsigned char kbytes[crypto_secretbox_KEYBYTES];
randombytes(kbytes,crypto_secretbox_KEYBYTES);
string k((char *) kbytes,crypto_secretbox_KEYBYTES);
unsigned char nbytes[crypto_secretbox_NONCEBYTES];
randombytes(nbytes,crypto_secretbox_NONCEBYTES);
string n((char *) nbytes,crypto_secretbox_NONCEBYTES);
unsigned char mbytes[mlen];
randombytes(mbytes,mlen);
string m((char *) mbytes,mlen);
string c = crypto_secretbox(m,n,k);
int caught = 0;
while (caught < 10) {
c.replace(random() % c.size(),1,1,random());
try {
string m2 = crypto_secretbox_open(c,n,k);
if (m != m2) {
printf("forgery\n");
return 100;
}
} catch(const char *s) {
if (string(s) == string("ciphertext fails verification"))
++caught;
else {
printf("%s\n",s);
return 111;
}
}
}
}
return 0;
}
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