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Diffstat (limited to 'ext/ipp/sources/ippcp/pcpprng_genhw.h')
| -rw-r--r-- | ext/ipp/sources/ippcp/pcpprng_genhw.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcpprng_genhw.h b/ext/ipp/sources/ippcp/pcpprng_genhw.h new file mode 100644 index 0000000..4216d75 --- /dev/null +++ b/ext/ipp/sources/ippcp/pcpprng_genhw.h @@ -0,0 +1,130 @@ +/******************************************************************************* +* 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) */ |