1 /* uECC_platform_specific.h - Interface to platform specific functions*/ 2 3 /* Copyright (c) 2014, Kenneth MacKay 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * * Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 18 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 24 * POSSIBILITY OF SUCH DAMAGE.*/ 25 26 /* 27 * Copyright (C) 2017 by Intel Corporation, All Rights Reserved. 28 * 29 * Redistribution and use in source and binary forms, with or without 30 * modification, are permitted provided that the following conditions are met: 31 * 32 * - Redistributions of source code must retain the above copyright notice, 33 * this list of conditions and the following disclaimer. 34 * 35 * - Redistributions in binary form must reproduce the above copyright 36 * notice, this list of conditions and the following disclaimer in the 37 * documentation and/or other materials provided with the distribution. 38 * 39 * - Neither the name of Intel Corporation nor the names of its contributors 40 * may be used to endorse or promote products derived from this software 41 * without specific prior written permission. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 44 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 46 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 47 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 48 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 49 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 50 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 51 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 52 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 53 * POSSIBILITY OF SUCH DAMAGE. 54 * 55 * uECC_platform_specific.h -- Interface to platform specific functions 56 */ 57 58 #ifndef __UECC_PLATFORM_SPECIFIC_H_ 59 #define __UECC_PLATFORM_SPECIFIC_H_ 60 61 /* 62 * The RNG function should fill 'size' random bytes into 'dest'. It should 63 * return 1 if 'dest' was filled with random data, or 0 if the random data could 64 * not be generated. The filled-in values should be either truly random, or from 65 * a cryptographically-secure PRNG. 66 * 67 * A cryptographically-secure PRNG function must be set (using uECC_set_rng()) 68 * before calling uECC_make_key() or uECC_sign(). 69 * 70 * Setting a cryptographically-secure PRNG function improves the resistance to 71 * side-channel attacks for uECC_shared_secret(). 72 * 73 * A correct PRNG function is set by default (default_RNG_defined = 1) and works 74 * for some platforms, such as Unix and Linux. For other platforms, you may need 75 * to provide another PRNG function. 76 */ 77 #define default_RNG_defined 1 78 79 int default_CSPRNG(uint8_t *dest, unsigned int size); 80 81 #endif /* __UECC_PLATFORM_SPECIFIC_H_ */ 82
