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modexppc.h

00001 #ifndef CRYPTOPP_MODEXPPC_H
00002 #define CRYPTOPP_MODEXPPC_H
00003 
00004 #include "modarith.h"
00005 #include "eprecomp.h"
00006 #include "smartptr.h"
00007 #include "pubkey.h"
00008 
00009 NAMESPACE_BEGIN(CryptoPP)
00010 
00011 class ModExpPrecomputation : public DL_GroupPrecomputation<Integer>
00012 {
00013 public:
00014         // DL_GroupPrecomputation
00015         bool NeedConversions() const {return true;}
00016         Element ConvertIn(const Element &v) const {return m_mr->ConvertIn(v);}
00017         virtual Element ConvertOut(const Element &v) const {return m_mr->ConvertOut(v);}
00018         const AbstractGroup<Element> & GetGroup() const {return m_mr->MultiplicativeGroup();}
00019         Element BERDecodeElement(BufferedTransformation &bt) const {return Integer(bt);}
00020         void DEREncodeElement(BufferedTransformation &bt, const Element &v) const {v.DEREncode(bt);}
00021 
00022         // non-inherited
00023         void SetModulus(const Integer &v) {m_mr.reset(new MontgomeryRepresentation(v));}
00024         const Integer & GetModulus() const {return m_mr->GetModulus();}
00025 
00026 private:
00027         value_ptr<MontgomeryRepresentation> m_mr;
00028 };
00029 
00030 NAMESPACE_END
00031 
00032 #endif

Generated on Mon Apr 19 18:12:31 2004 for Crypto++ by doxygen 1.3.6-20040222