xref: /aosp_15_r20/external/openscreen/util/crypto/random_bytes.cc (revision 3f982cf4871df8771c9d4abe6e9a6f8d829b2736) 
1*3f982cf4SFabien Sanglard // Copyright 2020 The Chromium Authors. All rights reserved.
2*3f982cf4SFabien Sanglard // Use of this source code is governed by a BSD-style license that can be
3*3f982cf4SFabien Sanglard // found in the LICENSE file.
4*3f982cf4SFabien Sanglard 
5*3f982cf4SFabien Sanglard #include "util/crypto/random_bytes.h"
6*3f982cf4SFabien Sanglard 
7*3f982cf4SFabien Sanglard #include "openssl/rand.h"
8*3f982cf4SFabien Sanglard #include "util/osp_logging.h"
9*3f982cf4SFabien Sanglard 
10*3f982cf4SFabien Sanglard namespace openscreen {
11*3f982cf4SFabien Sanglard 
GenerateRandomBytes16()12*3f982cf4SFabien Sanglard std::array<uint8_t, 16> GenerateRandomBytes16() {
13*3f982cf4SFabien Sanglard   std::array<uint8_t, 16> result;
14*3f982cf4SFabien Sanglard   GenerateRandomBytes(result.begin(), result.size());
15*3f982cf4SFabien Sanglard   return result;
16*3f982cf4SFabien Sanglard }
17*3f982cf4SFabien Sanglard 
GenerateRandomBytes(uint8_t * out,int len)18*3f982cf4SFabien Sanglard void GenerateRandomBytes(uint8_t* out, int len) {
19*3f982cf4SFabien Sanglard   // Working cryptography is mandatory for our library to run.
20*3f982cf4SFabien Sanglard   OSP_CHECK(RAND_bytes(out, len) == 1);
21*3f982cf4SFabien Sanglard }
22*3f982cf4SFabien Sanglard 
23*3f982cf4SFabien Sanglard }  // namespace openscreen
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