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      1 
      2 #define TEST_NAME "box8"
      3 #include "cmptest.h"
      4 
      5 static unsigned char alicesk[crypto_box_SECRETKEYBYTES];
      6 static unsigned char alicepk[crypto_box_PUBLICKEYBYTES];
      7 static unsigned char bobsk[crypto_box_SECRETKEYBYTES];
      8 static unsigned char bobpk[crypto_box_PUBLICKEYBYTES];
      9 static unsigned char n[crypto_box_NONCEBYTES];
     10 
     11 int
     12 main(void)
     13 {
     14     unsigned char *m;
     15     unsigned char *c;
     16     unsigned char *m2;
     17     size_t         mlen;
     18     size_t         mlen_max = 1000;
     19     size_t         i;
     20     int            faults;
     21     int            ret;
     22 
     23     m  = (unsigned char *) sodium_malloc(mlen_max);
     24     c  = (unsigned char *) sodium_malloc(mlen_max);
     25     m2 = (unsigned char *) sodium_malloc(mlen_max);
     26     crypto_box_keypair(alicepk, alicesk);
     27     crypto_box_keypair(bobpk, bobsk);
     28     for (mlen = 0; mlen + crypto_box_ZEROBYTES <= mlen_max; mlen++) {
     29         randombytes_buf(n, crypto_box_NONCEBYTES);
     30         randombytes_buf(m + crypto_box_ZEROBYTES, mlen);
     31         ret = crypto_box(c, m, mlen + crypto_box_ZEROBYTES, n, bobpk, alicesk);
     32         assert(ret == 0);
     33 #ifdef BROWSER_TESTS
     34         faults = 1;
     35 #else
     36         faults = 5;
     37 #endif
     38         while (faults > 0) {
     39             c[rand() % (mlen + crypto_box_ZEROBYTES)] = rand();
     40             if (crypto_box_open(m2, c, mlen + crypto_box_ZEROBYTES, n, alicepk,
     41                                 bobsk) == 0) {
     42                 for (i = 0; i < mlen + crypto_box_ZEROBYTES; ++i) {
     43                     if (m2[i] != m[i]) {
     44                         printf("forgery\n");
     45                         return 100;
     46                     }
     47                 }
     48             } else {
     49                 faults--;
     50             }
     51         }
     52     }
     53     sodium_free(m);
     54     sodium_free(c);
     55     sodium_free(m2);
     56 
     57     return 0;
     58 }
     59