1 /*
2  *  Copyright (c) 2019, The OpenThread Authors.
3  *  All rights reserved.
4  *
5  *  Redistribution and use in source and binary forms, with or without
6  *  modification, are permitted provided that the following conditions are met:
7  *  1. Redistributions of source code must retain the above copyright
8  *     notice, this list of conditions and the following disclaimer.
9  *  2. Redistributions in binary form must reproduce the above copyright
10  *     notice, this list of conditions and the following disclaimer in the
11  *     documentation and/or other materials provided with the distribution.
12  *  3. Neither the name of the copyright holder nor the
13  *     names of its contributors may be used to endorse or promote products
14  *     derived from this software without specific prior written permission.
15  *
16  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17  *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20  *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21  *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22  *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23  *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24  *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25  *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26  *  POSSIBILITY OF SUCH DAMAGE.
27  */
28 
29 /**
30  * @file
31  *   This file implements the OpenThread software random number generator API.
32  */
33 
34 #include <openthread/random_noncrypto.h>
35 
36 #include "common/random.hpp"
37 
38 using namespace ot;
39 
otRandomNonCryptoGetUint32(void)40 uint32_t otRandomNonCryptoGetUint32(void)
41 {
42     return Random::NonCrypto::GetUint32();
43 }
44 
otRandomNonCryptoGetUint8(void)45 uint8_t otRandomNonCryptoGetUint8(void)
46 {
47     return Random::NonCrypto::GetUint8();
48 }
49 
otRandomNonCryptoGetUint16(void)50 uint16_t otRandomNonCryptoGetUint16(void)
51 {
52     return Random::NonCrypto::GetUint16();
53 }
54 
otRandomNonCryptoGetUint8InRange(uint8_t aMin,uint8_t aMax)55 uint8_t otRandomNonCryptoGetUint8InRange(uint8_t aMin, uint8_t aMax)
56 {
57     return Random::NonCrypto::GetUint8InRange(aMin, aMax);
58 }
59 
otRandomNonCryptoGetUint16InRange(uint16_t aMin,uint16_t aMax)60 uint16_t otRandomNonCryptoGetUint16InRange(uint16_t aMin, uint16_t aMax)
61 {
62     return Random::NonCrypto::GetUint16InRange(aMin, aMax);
63 }
64 
otRandomNonCryptoGetUint32InRange(uint32_t aMin,uint32_t aMax)65 uint32_t otRandomNonCryptoGetUint32InRange(uint32_t aMin, uint32_t aMax)
66 {
67     return Random::NonCrypto::GetUint32InRange(aMin, aMax);
68 }
69 
otRandomNonCryptoFillBuffer(uint8_t * aBuffer,uint16_t aSize)70 void otRandomNonCryptoFillBuffer(uint8_t *aBuffer, uint16_t aSize)
71 {
72     Random::NonCrypto::FillBuffer(aBuffer, aSize);
73 }
74 
otRandomNonCryptoAddJitter(uint32_t aValue,uint16_t aJitter)75 uint32_t otRandomNonCryptoAddJitter(uint32_t aValue, uint16_t aJitter)
76 {
77     return Random::NonCrypto::AddJitter(aValue, aJitter);
78 }
79