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Diffstat (limited to 'ext/ipp/sources/ippcp/pcpaesmxtsstuff.h')
| -rw-r--r-- | ext/ipp/sources/ippcp/pcpaesmxtsstuff.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcpaesmxtsstuff.h b/ext/ipp/sources/ippcp/pcpaesmxtsstuff.h new file mode 100644 index 0000000..bc5f726 --- /dev/null +++ b/ext/ipp/sources/ippcp/pcpaesmxtsstuff.h @@ -0,0 +1,132 @@ +/******************************************************************************* +* Copyright 2016-2018 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. +// AES-XTS Internal Functions +// +// +*/ + +#if !defined(_PCP_AES_XTS_STUFF_H) +#define _PCP_AES_XTS_STUFF_H + +#include "owncp.h" +#include "pcpaesm.h" + +/* + multiplication by primirive element alpha (==2) + over P=x^128 +x^7 +x^2 +x +1 + + LE version +*/ + +#if (_IPP_ARCH ==_IPP_ARCH_EM64T) +#pragma message ("_IPP_ARCH_EM64T") +#define GF_MASK (0x8000000000000000) +#define GF_POLY (0x0000000000000087) + +__INLINE void gf_mul_by_primitive(void* x) +{ +#if 0 + Ipp64u* x64 = (Ipp64u*)x; + Ipp64u xorL = ((Ipp64s)x64[1] >> (BITSIZE(Ipp64u)-1)) & GF_POLY; + x64[1] = (x64[1]+x64[1]) | (x64[0] >>(BITSIZE(Ipp64u)-1)); + x64[0] = (x64[0]+x64[0]) ^ xorL; +#endif + Ipp64u* x64 = (Ipp64u*)x; + Ipp64u xorL = (0>(Ipp64s)x64[1])? GF_POLY : 0; + Ipp64u addH = (0>(Ipp64s)x64[0])? 1 : 0; + x64[0] = (x64[0]+x64[0]) ^ xorL; + x64[1] = (x64[1]+x64[1]) + addH; +} + +//#elif (_IPP_ARCH ==_IPP_ARCH_IA32) +#else +#pragma message ("_IPP_ARCH_IA32") +#define GF_MASK (0x80000000) +#define GF_POLY (0x00000087) + +__INLINE void gf_mul_by_primitive(void* x) +{ + Ipp32u* x32 = (Ipp32u*)x; + Ipp32u xorL = ((Ipp32s)(x32[3]&GF_MASK) >> (BITSIZE(Ipp32u)-1)) & GF_POLY; + x32[3] = (x32[3]<<1) | (x32[2] >>(BITSIZE(Ipp32u)-1)); + x32[2] = (x32[2]<<1) | (x32[1] >>(BITSIZE(Ipp32u)-1)); + x32[1] = (x32[1]<<1) | (x32[0] >>(BITSIZE(Ipp32u)-1)); + x32[0] = (x32[0]<<1) ^ xorL; +} +#endif + +/* + the following are especially for multi-block processing +*/ +static void cpXTSwhitening(Ipp8u* buffer, int nblk, Ipp8u* ptwk) +{ + Ipp64u* pbuf64 = (Ipp64u*)buffer; + Ipp64u* ptwk64 = (Ipp64u*)ptwk; + + pbuf64[0] = ptwk64[0]; + pbuf64[1] = ptwk64[1]; + + for(nblk--, pbuf64+=2; nblk>0; nblk--, pbuf64+=2) { + gf_mul_by_primitive(ptwk64); + pbuf64[0] = ptwk64[0]; + pbuf64[1] = ptwk64[1]; + } + gf_mul_by_primitive(ptwk64); +} + +static void cpXTSxor16(Ipp8u* pDst, const Ipp8u* pSrc1, const Ipp8u* pSrc2, int nblk) +{ + Ipp64u* pdst64 = (Ipp64u*)pDst; + const Ipp64u* ps1_64 = (const Ipp64u*)pSrc1; + const Ipp64u* ps2_64 = (const Ipp64u*)pSrc2; + for(; nblk>0; nblk--, pdst64+=2, ps1_64+=2, ps2_64+=2) { + pdst64[0] = ps1_64[0] ^ ps2_64[0]; + pdst64[1] = ps1_64[1] ^ ps2_64[1]; + } +} +/////////////////////////////// + + +#endif /* _PCP_AES_XTS_STUFF_H */ |