release/src/router/dnscrypt/src/libnacl/crypto_auth/try.c

   1 /*
   2  * crypto_auth/try.c version 20090118
   3  * D. J. Bernstein
   4  * Public domain.
   5  */
   6
   7 #include "crypto_hash_sha256.h"
   8 #include "crypto_auth.h"
   9 #include "windows/windows-quirks.h"
  10
  11 extern unsigned char *alignedcalloc(unsigned long long);
  12
  13 const char *primitiveimplementation = crypto_auth_IMPLEMENTATION;
  14
  15 #define MAXTEST_BYTES 10000
  16 #define CHECKSUM_BYTES 4096
  17 #define TUNE_BYTES 1536
  18
  19 static unsigned char *h;
  20 static unsigned char *m;
  21 static unsigned char *k;
  22 static unsigned char *h2;
  23 static unsigned char *m2;
  24 static unsigned char *k2;
  25
  26 void preallocate(void)
  27 {
  28 }
  29
  30 void allocate(void)
  31 {
  32   h = alignedcalloc(crypto_auth_BYTES);
  33   m = alignedcalloc(MAXTEST_BYTES);
  34   k = alignedcalloc(crypto_auth_KEYBYTES);
  35   h2 = alignedcalloc(crypto_auth_BYTES);
  36   m2 = alignedcalloc(MAXTEST_BYTES + crypto_auth_BYTES);
  37   k2 = alignedcalloc(crypto_auth_KEYBYTES + crypto_auth_BYTES);
  38 }
  39
  40 void predoit(void)
  41 {
  42 }
  43
  44 void doit(void)
  45 {
  46   crypto_auth(h,m,TUNE_BYTES,k);
  47   crypto_auth_verify(h,m,TUNE_BYTES,k);
  48 }
  49
  50 char checksum[crypto_auth_BYTES * 2 + 1];
  51
  52 const char *checksum_compute(void)
  53 {
  54   long long i;
  55   long long j;
  56
  57   for (i = 0;i < CHECKSUM_BYTES;++i) {
  58     long long mlen = i;
  59     long long klen = crypto_auth_KEYBYTES;
  60     long long hlen = crypto_auth_BYTES;
  61
  62     for (j = -16;j < 0;++j) h[j] = random();
  63     for (j = -16;j < 0;++j) k[j] = random();
  64     for (j = -16;j < 0;++j) m[j] = random();
  65     for (j = hlen;j < hlen + 16;++j) h[j] = random();
  66     for (j = klen;j < klen + 16;++j) k[j] = random();
  67     for (j = mlen;j < mlen + 16;++j) m[j] = random();
  68     for (j = -16;j < hlen + 16;++j) h2[j] = h[j];
  69     for (j = -16;j < klen + 16;++j) k2[j] = k[j];
  70     for (j = -16;j < mlen + 16;++j) m2[j] = m[j];
  71
  72     if (crypto_auth(h,m,mlen,k) != 0) return "crypto_auth returns nonzero";
  73
  74     for (j = -16;j < klen + 16;++j) if (k[j] != k2[j]) return "crypto_auth overwrites k";
  75     for (j = -16;j < mlen + 16;++j) if (m[j] != m2[j]) return "crypto_auth overwrites m";
  76     for (j = -16;j < 0;++j) if (h[j] != h2[j]) return "crypto_auth writes before output";
  77     for (j = hlen;j < hlen + 16;++j) if (h[j] != h2[j]) return "crypto_auth writes after output";
  78
  79     for (j = -16;j < 0;++j) h[j] = random();
  80     for (j = -16;j < 0;++j) k[j] = random();
  81     for (j = -16;j < 0;++j) m[j] = random();
  82     for (j = hlen;j < hlen + 16;++j) h[j] = random();
  83     for (j = klen;j < klen + 16;++j) k[j] = random();
  84     for (j = mlen;j < mlen + 16;++j) m[j] = random();
  85     for (j = -16;j < hlen + 16;++j) h2[j] = h[j];
  86     for (j = -16;j < klen + 16;++j) k2[j] = k[j];
  87     for (j = -16;j < mlen + 16;++j) m2[j] = m[j];
  88
  89     if (crypto_auth(m2,m2,mlen,k) != 0) return "crypto_auth returns nonzero";
  90     for (j = 0;j < hlen;++j) if (m2[j] != h[j]) return "crypto_auth does not handle m overlap";
  91     for (j = 0;j < hlen;++j) m2[j] = m[j];
  92     if (crypto_auth(k2,m2,mlen,k2) != 0) return "crypto_auth returns nonzero";
  93     for (j = 0;j < hlen;++j) if (k2[j] != h[j]) return "crypto_auth does not handle k overlap";
  94     for (j = 0;j < hlen;++j) k2[j] = k[j];
  95
  96     if (crypto_auth_verify(h,m,mlen,k) != 0) return "crypto_auth_verify returns nonzero";
  97
  98     for (j = -16;j < hlen + 16;++j) if (h[j] != h2[j]) return "crypto_auth overwrites h";
  99     for (j = -16;j < klen + 16;++j) if (k[j] != k2[j]) return "crypto_auth overwrites k";
 100     for (j = -16;j < mlen + 16;++j) if (m[j] != m2[j]) return "crypto_auth overwrites m";
 101
 102     crypto_hash_sha256(h2,h,hlen);
 103     for (j = 0;j < klen;++j) k[j] ^= h2[j % 32];
 104     if (crypto_auth(h,m,mlen,k) != 0) return "crypto_auth returns nonzero";
 105     if (crypto_auth_verify(h,m,mlen,k) != 0) return "crypto_auth_verify returns nonzero";
 106
 107     crypto_hash_sha256(h2,h,hlen);
 108     for (j = 0;j < mlen;++j) m[j] ^= h2[j % 32];
 109     m[mlen] = h2[0];
 110   }
 111   if (crypto_auth(h,m,CHECKSUM_BYTES,k) != 0) return "crypto_auth returns nonzero";
 112   if (crypto_auth_verify(h,m,CHECKSUM_BYTES,k) != 0) return "crypto_auth_verify returns nonzero";
 113
 114   for (i = 0;i < crypto_auth_BYTES;++i) {
 115     checksum[2 * i] = "0123456789abcdef"[15 & (h[i] >> 4)];
 116     checksum[2 * i + 1] = "0123456789abcdef"[15 & h[i]];
 117   }
 118   checksum[2 * i] = 0;
 119   return 0;
 120 }