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35 lines
1.0 KiB
C++
35 lines
1.0 KiB
C++
#ifndef CRYPTOPP_MODEXPPC_H
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#define CRYPTOPP_MODEXPPC_H
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#include "modarith.h"
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#include "eprecomp.h"
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#include "smartptr.h"
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#include "pubkey.h"
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NAMESPACE_BEGIN(CryptoPP)
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CRYPTOPP_DLL_TEMPLATE_CLASS DL_FixedBasePrecomputationImpl<Integer>;
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class ModExpPrecomputation : public DL_GroupPrecomputation<Integer>
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{
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public:
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// DL_GroupPrecomputation
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bool NeedConversions() const {return true;}
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Element ConvertIn(const Element &v) const {return m_mr->ConvertIn(v);}
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virtual Element ConvertOut(const Element &v) const {return m_mr->ConvertOut(v);}
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const AbstractGroup<Element> & GetGroup() const {return m_mr->MultiplicativeGroup();}
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Element BERDecodeElement(BufferedTransformation &bt) const {return Integer(bt);}
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void DEREncodeElement(BufferedTransformation &bt, const Element &v) const {v.DEREncode(bt);}
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// non-inherited
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void SetModulus(const Integer &v) {m_mr.reset(new MontgomeryRepresentation(v));}
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const Integer & GetModulus() const {return m_mr->GetModulus();}
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private:
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value_ptr<MontgomeryRepresentation> m_mr;
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};
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NAMESPACE_END
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#endif
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