| /******************************************************************************* |
| * Copyright 2017-2018 Intel Corporation |
| * All Rights Reserved. |
| * |
| * If this software was obtained under the Intel Simplified Software License, |
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| * If this software was obtained under the Apache License, Version 2.0 (the |
| * "License"), the following terms apply: |
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| *******************************************************************************/ |
| |
| #if !defined(_GS_MOD_STUFF_H) |
| #define _GS_MOD_STUFF_H |
| |
| //#define MONTMUL_ONESTAGE |
| |
| #include "owncp.h" |
| |
| #include "pcpbnuimpl.h" |
| #include "gsmodmethod.h" |
| |
| #define MOD_ENGINE_MIN_POOL_SIZE 1 |
| |
| typedef struct _gsModEngine gsModEngine_T; |
| |
| typedef struct _gsModEngine |
| { |
| gsModEngine_T* pParentME; /* pointer to parent stuff */ |
| int extdegree; /* parent modulus extension (deg) */ |
| int modBitLen; /* length of modulus in bits */ |
| int modLen; /* length of modulus (BNU_CHUNK_T) */ |
| int modLen32; /* length of modulus (Ipp32u) */ |
| int peLen; /* length of pool element (BNU_CHUNK_T) */ |
| const gsModMethod* method; /* modular arithmetic methods */ |
| BNU_CHUNK_T* pModulus; /* modulus */ |
| BNU_CHUNK_T k0; /* low word of (1/modulus) mod R */ |
| BNU_CHUNK_T* pMontR; /* mont_enc(1) */ |
| BNU_CHUNK_T* pMontR2; /* mont_enc(1)^2 */ |
| BNU_CHUNK_T* pHalfModulus; /* modulus/2 */ |
| BNU_CHUNK_T* pQnr; /* quadratic non-residue */ |
| int poolLenUsed; /* number of reserved temporary BNU */ |
| int poolLen; /* max number of temporary BNU */ |
| BNU_CHUNK_T* pBuffer; /* buffer of modLen*nBuffers length */ |
| } gsModEngine; |
| |
| /* accessory macros */ |
| #define MOD_PARENT(eng) ((eng)->pParentME) |
| #define MOD_EXTDEG(eng) ((eng)->extdegree) |
| #define MOD_BITSIZE(eng) ((eng)->modBitLen) |
| #define MOD_LEN(eng) ((eng)->modLen) |
| #define MOD_LEN32(eng) ((eng)->modLen32) |
| #define MOD_PELEN(eng) ((eng)->peLen) |
| #define MOD_METHOD(eng) ((eng)->method) |
| #define MOD_MODULUS(eng) ((eng)->pModulus) |
| #define MOD_MNT_FACTOR(eng) ((eng)->k0) |
| #define MOD_MNT_R(eng) ((eng)->pMontR) |
| #define MOD_MNT_R2(eng) ((eng)->pMontR2) |
| #define MOD_HMODULUS(eng) ((eng)->pHalfModulus) |
| #define MOD_QNR(eng) ((eng)->pQnr) |
| #define MOD_POOL_BUF(eng) ((eng)->pBuffer) |
| #define MOD_MAXPOOL(eng) ((eng)->poolLen) |
| #define MOD_USEDPOOL(eng) ((eng)->poolLenUsed) |
| |
| #define MOD_BUFFER(eng,n) ((eng)->pBuffer+(MOD_PELEN(eng))*(n)) |
| |
| #define MOD_ENGINE_ALIGNMENT ((int)sizeof(void*)) |
| |
| /* |
| // size of context and it initialization |
| */ |
| #define gsModEngineGetSize OWNAPI(gsModEngineGetSize) |
| IppStatus gsModEngineGetSize(int modulusBitSIze, int numpe, int* pSize); |
| |
| #define gsModEngineInit OWNAPI(gsModEngineInit) |
| IppStatus gsModEngineInit(gsModEngine* pME, const Ipp32u* pModulus, int modulusBitSize, int numpe, const gsModMethod* method); |
| |
| #define gsMontFactor OWNAPI(gsMontFactor) |
| BNU_CHUNK_T gsMontFactor(BNU_CHUNK_T m0); |
| |
| |
| /* |
| // pool management methods |
| */ |
| |
| /*F* |
| // Name: gsModPoolAlloc |
| // |
| // Purpose: Allocation pool. |
| // |
| // Returns: Reason: |
| // pointer to allocate Pool enough of pool |
| // NULL required pool more than pME have |
| // |
| // Parameters: |
| // pME ModEngine |
| // poolReq Required pool |
| *F*/ |
| |
| __INLINE BNU_CHUNK_T* gsModPoolAlloc(gsModEngine* pME, int poolReq) |
| { |
| BNU_CHUNK_T* pPool = MOD_BUFFER(pME, pME->poolLenUsed); |
| |
| if(pME->poolLenUsed + poolReq > pME->poolLen) |
| pPool = NULL; |
| else |
| pME->poolLenUsed += poolReq; |
| |
| return pPool; |
| } |
| |
| /*F* |
| // Name: gsModPoolFree |
| // |
| // Purpose: Delete pool. |
| // |
| // Returns: |
| // nothing |
| // |
| // Parameters: |
| // pME ModEngine |
| // poolReq Required pool |
| *F*/ |
| |
| __INLINE void gsModPoolFree(gsModEngine* pME, int poolReq) |
| { |
| if(pME->poolLenUsed < poolReq) |
| poolReq = pME->poolLenUsed; |
| pME->poolLenUsed -= poolReq; |
| } |
| |
| /* return pointer to the top pool buffer */ |
| #define gsModGetPool OWNAPI(gsModGetPool) |
| BNU_CHUNK_T* gsModGetPool(gsModEngine* pME); |
| |
| /* |
| // advanced operations |
| */ |
| typedef int (*alm_inv)(BNU_CHUNK_T* pr, const BNU_CHUNK_T* pa, gsModEngine* pMA); |
| |
| #define alm_mont_inv OWNAPI(alm_mont_inv) |
| int alm_mont_inv(BNU_CHUNK_T* pr, const BNU_CHUNK_T* pa, gsModEngine* pMA); |
| |
| #define alm_mont_inv_ct OWNAPI(alm_mont_inv_ct) |
| int alm_mont_inv_ct(BNU_CHUNK_T* pr, const BNU_CHUNK_T* pa, gsModEngine* pMA); |
| |
| #define gs_mont_inv OWNAPI(gs_mont_inv) |
| BNU_CHUNK_T* gs_mont_inv(BNU_CHUNK_T* pr, const BNU_CHUNK_T* pa, gsModEngine* pMA, alm_inv invf); |
| |
| #define gs_inv OWNAPI(gs_inv) |
| BNU_CHUNK_T* gs_inv(BNU_CHUNK_T* pr, const BNU_CHUNK_T* pa, gsModEngine* pMA, alm_inv invf); |
| |
| /* |
| // Pack/Unpack methods |
| */ |
| #define gsPackModEngineCtx OWNAPI(gsPackModEngineCtx) |
| void gsPackModEngineCtx(const gsModEngine* pCtx, Ipp8u* pBuffer); |
| |
| #define gsUnpackModEngineCtx OWNAPI(gsUnpackModEngineCtx) |
| void gsUnpackModEngineCtx(const Ipp8u* pBuffer, gsModEngine* pCtx); |
| |
| #endif /* _GS_MOD_STUFF_H */ |
