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| |
| #if !defined(_GS_MOD_METHOD_H) |
| #define _GS_MOD_METHOD_H |
| |
| //#include "owndefs.h" |
| #include "owncp.h" |
| |
| #include "pcpbnuimpl.h" |
| //#include "gsmodstuff.h" |
| |
| typedef struct _gsModEngine gsEngine; |
| |
| /* modular arith methods */ |
| typedef BNU_CHUNK_T* (*mod_encode)(BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, gsEngine* pMA); |
| typedef BNU_CHUNK_T* (*mod_decode)(BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, gsEngine* pMA); |
| typedef BNU_CHUNK_T* (*mod_red) (BNU_CHUNK_T* pR, BNU_CHUNK_T* pA, gsEngine* pMA); |
| typedef BNU_CHUNK_T* (*mod_sqr) (BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, gsEngine* pMA); |
| typedef BNU_CHUNK_T* (*mod_mul) (BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, const BNU_CHUNK_T* pB, gsEngine* pMA); |
| typedef BNU_CHUNK_T* (*mod_add) (BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, const BNU_CHUNK_T* pB, gsEngine* pMA); |
| typedef BNU_CHUNK_T* (*mod_sub) (BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, const BNU_CHUNK_T* pB, gsEngine* pMA); |
| typedef BNU_CHUNK_T* (*mod_neg) (BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, gsEngine* pMA); |
| typedef BNU_CHUNK_T* (*mod_div2) (BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, gsEngine* pMA); |
| typedef BNU_CHUNK_T* (*mod_mul2) (BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, gsEngine* pMA); |
| typedef BNU_CHUNK_T* (*mod_mul3) (BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, gsEngine* pMA); |
| |
| typedef struct _gsModMethod { |
| mod_encode encode; |
| mod_decode decode; |
| mod_mul mul; |
| mod_sqr sqr; |
| mod_red red; |
| mod_add add; |
| mod_sub sub; |
| mod_neg neg; |
| mod_div2 div2; |
| mod_mul2 mul2; |
| mod_mul3 mul3; |
| } gsModMethod; |
| |
| __INLINE BNU_CHUNK_T cpIsZero(BNU_CHUNK_T x) |
| { return x==0; } |
| __INLINE BNU_CHUNK_T cpIsNonZero(BNU_CHUNK_T x) |
| { return x!=0; } |
| __INLINE BNU_CHUNK_T cpIsOdd(BNU_CHUNK_T x) |
| { return x&1; } |
| __INLINE BNU_CHUNK_T cpIsEven(BNU_CHUNK_T x) |
| { return 1-cpIsOdd(x); } |
| |
| /* dst[] = (flag)? src[] : dst[] */ |
| __INLINE void cpMaskMove_gs(BNU_CHUNK_T* dst, const BNU_CHUNK_T* src, int len, BNU_CHUNK_T moveFlag) |
| { |
| BNU_CHUNK_T srcMask = 0-cpIsNonZero(moveFlag); |
| BNU_CHUNK_T dstMask = ~srcMask; |
| int n; |
| for(n=0; n<len; n++) |
| dst[n] = (src[n] & srcMask) ^ (dst[n] & dstMask); |
| } |
| |
| /* common available pre-defined methos */ |
| #define gsModArith OWNAPI(gsModArith) |
| gsModMethod* gsModArith(void); |
| |
| /* available pre-defined methos for RSA */ |
| #define gsModArithRSA OWNAPI(gsModArithRSA) |
| gsModMethod* gsModArithRSA(void); |
| |
| /* available pre-defined methos for ippsMont* */ |
| #define gsModArithMont OWNAPI(gsModArithMont) |
| gsModMethod* gsModArithMont(void); |
| |
| /* available pre-defined methos for DLP * */ |
| #define gsModArithDLP OWNAPI(gsModArithDLP) |
| gsModMethod* gsModArithDLP(void); |
| |
| /* available pre-defined common methos for GF over prime * */ |
| #define gsArithGFp OWNAPI(gsArithGFp) |
| gsModMethod* gsArithGFp(void); |
| |
| /* ... and etc ... */ |
| |
| #endif /* _GS_MOD_METHOD_H */ |
| |