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      1 /* Copyright (c) 2015, Google Inc.
      2  *
      3  * Permission to use, copy, modify, and/or distribute this software for any
      4  * purpose with or without fee is hereby granted, provided that the above
      5  * copyright notice and this permission notice appear in all copies.
      6  *
      7  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
      8  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
      9  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
     10  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     11  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
     12  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
     13  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
     14 
     15 #include <stdio.h>
     16 #include <string.h>
     17 
     18 #include <vector>
     19 
     20 #include <openssl/crypto.h>
     21 #include <openssl/poly1305.h>
     22 
     23 #include "../test/file_test.h"
     24 
     25 
     26 // |CRYPTO_poly1305_finish| requires a 16-byte-aligned output.
     27 #if defined(OPENSSL_WINDOWS)
     28 // MSVC doesn't support C++11 |alignas|.
     29 #define ALIGNED __declspec(align(16))
     30 #else
     31 #define ALIGNED alignas(16)
     32 #endif
     33 
     34 static bool TestPoly1305(FileTest *t, void *arg) {
     35   std::vector<uint8_t> key, in, mac;
     36   if (!t->GetBytes(&key, "Key") ||
     37       !t->GetBytes(&in, "Input") ||
     38       !t->GetBytes(&mac, "MAC")) {
     39     return false;
     40   }
     41   if (key.size() != 32 || mac.size() != 16) {
     42     t->PrintLine("Invalid test");
     43     return false;
     44   }
     45 
     46   // Test single-shot operation.
     47   poly1305_state state;
     48   CRYPTO_poly1305_init(&state, key.data());
     49   CRYPTO_poly1305_update(&state, in.data(), in.size());
     50   ALIGNED uint8_t out[16];
     51   CRYPTO_poly1305_finish(&state, out);
     52   if (!t->ExpectBytesEqual(out, 16, mac.data(), mac.size())) {
     53     t->PrintLine("Single-shot Poly1305 failed.");
     54     return false;
     55   }
     56 
     57   // Test streaming byte-by-byte.
     58   CRYPTO_poly1305_init(&state, key.data());
     59   for (size_t i = 0; i < in.size(); i++) {
     60     CRYPTO_poly1305_update(&state, &in[i], 1);
     61   }
     62   CRYPTO_poly1305_finish(&state, out);
     63   if (!t->ExpectBytesEqual(out, 16, mac.data(), mac.size())) {
     64     t->PrintLine("Streaming Poly1305 failed.");
     65     return false;
     66   }
     67 
     68   return true;
     69 }
     70 
     71 int main(int argc, char **argv) {
     72   CRYPTO_library_init();
     73 
     74   if (argc != 2) {
     75     fprintf(stderr, "%s <test file>\n", argv[0]);
     76     return 1;
     77   }
     78 
     79   return FileTestMain(TestPoly1305, nullptr, argv[1]);
     80 }
     81