/******************************************************************************* * Copyright 2015-2018 Intel Corporation * All Rights Reserved. * * If this software was obtained under the Intel Simplified Software License, * the following terms apply: * * The source code, information and material ("Material") contained herein is * owned by Intel Corporation or its suppliers or licensors, and title to such * Material remains with Intel Corporation or its suppliers or licensors. The * Material contains proprietary information of Intel or its suppliers and * licensors. The Material is protected by worldwide copyright laws and treaty * provisions. No part of the Material may be used, copied, reproduced, * modified, published, uploaded, posted, transmitted, distributed or disclosed * in any way without Intel's prior express written permission. No license under * any patent, copyright or other intellectual property rights in the Material * is granted to or conferred upon you, either expressly, by implication, * inducement, estoppel or otherwise. Any license under such intellectual * property rights must be express and approved by Intel in writing. * * Unless otherwise agreed by Intel in writing, you may not remove or alter this * notice or any other notice embedded in Materials by Intel or Intel's * suppliers or licensors in any way. * * * If this software was obtained under the Apache License, Version 2.0 (the * "License"), the following terms apply: * * You may not use this file except in compliance with the License. You may * obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 * * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * * See the License for the specific language governing permissions and * limitations under the License. *******************************************************************************/ /* // // Purpose: // Cryptography Primitive. // PRNG Functions // // Contents: // HW random generator // // */ #include "owndefs.h" #include "owncp.h" #include "pcpbn.h" #include "pcptool.h" #if !defined (_PCP_PRN_GEN_HW_H) #define _PCP_PRN_GEN_HW_H #if ((_IPP>=_IPP_G9) || (_IPP32E>=_IPP32E_E9)) __INLINE int cpRand_hw_sample(BNU_CHUNK_T* pSample) { #define LOCAL_COUNTER (8) int n; int success = 0; for(n=0; n<LOCAL_COUNTER && !success; n++) #if (_IPP_ARCH == _IPP_ARCH_IA32) success = _rdrand32_step(pSample); #elif (_IPP_ARCH == _IPP_ARCH_EM64T) success = _rdrand64_step(pSample); #else #error Unknown CPU arch #endif return success; #undef LOCAL_COUNTER } #if (_IPP32E>=_IPP32E_E9) __INLINE int cpRand_hw_sample32(Ipp32u* pSample) { #define LOCAL_COUNTER (8) int n; int success = 0; for(n=0; n<LOCAL_COUNTER && !success; n++) success = _rdrand32_step(pSample); return success; #undef LOCAL_COUNTER } #endif /*F* // Name: cpRandHW_buffer // // Purpose: Generates a pseudorandom bit sequence // based on RDRAND instruction of the specified nBits length. // // Returns: Reason: // 1 no errors // 0 random bit sequence can't be generated // // Parameters: // pBuffer pointer to the buffer // bufLen buffer length *F*/ __INLINE int cpRandHW_buffer(Ipp32u* pBuffer, int bufLen) { int nSamples = bufLen/(sizeof(BNU_CHUNK_T)/sizeof(Ipp32u)); int n; /* collect nSamples randoms */ for(n=0; n<nSamples; n++, pBuffer+=(sizeof(BNU_CHUNK_T)/sizeof(Ipp32u))) { if( !cpRand_hw_sample((BNU_CHUNK_T*)pBuffer)) return 0; } #if (_IPP32E>=_IPP32E_E9) if( bufLen%(sizeof(BNU_CHUNK_T)/sizeof(Ipp32u)) ) { if( !cpRand_hw_sample32(pBuffer)) { return 0; } } #endif return 1; } #endif #endif /* #if !defined (_PCP_PRN_GEN_HW_H) */