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Issue 10698177: Added crypto random-number generator (Closed) Base URL: http://git.chromium.org/chromium/src.git@master
Patch Set: Fixed #include/base:: problem Created 8 years, 4 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "crypto/random.h"
6
7 #include "base/string_util.h"
8 #include "testing/gtest/include/gtest/gtest.h"
9
10 // Basic functionality tests. Does NOT test the security of the random data.
11
12 // Ensures we don't have all trivial data, i.e. that the data is indeed random.
13 // Currently, that means the bytes cannot be all the same (e.g. all zeros).
14 bool IsTrivial(const std::string& bytes) {
15 for (size_t i = 0; i < bytes.size(); i++) {
16 if (bytes[i] != bytes[0]) {
17 return false;
18 }
19 }
20 return true;
21 }
22
23 TEST(RandBytes, RandBytes) {
24 std::string bytes(16, '\0');
25 crypto::RandBytes(WriteInto(&bytes, bytes.size()), bytes.size());
26 EXPECT_TRUE(!IsTrivial(bytes));
27 }
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