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oaep.h

00001 #ifndef CRYPTOPP_OAEP_H
00002 #define CRYPTOPP_OAEP_H
00003 
00004 #include "pubkey.h"
00005 
00006 NAMESPACE_BEGIN(CryptoPP)
00007 
00008 extern byte OAEP_P_DEFAULT[];   // defined in misc.cpp
00009 
00010 /// <a href="http://www.weidai.com/scan-mirror/ca.html#cem_OAEP-MGF1">EME-OAEP</a>, for use with RSAES
00011 template <class H, class MGF=P1363_MGF1, byte *P=OAEP_P_DEFAULT, unsigned int PLen=0>
00012 class OAEP : public PK_EncryptionMessageEncodingMethod, public EncryptionStandard
00013 {
00014 public:
00015         static std::string StaticAlgorithmName() {return std::string("OAEP-") + MGF::StaticAlgorithmName() + "(" + H::StaticAlgorithmName() + ")";}
00016         typedef OAEP<H, MGF, P, PLen> EncryptionMessageEncodingMethod;
00017 
00018         unsigned int MaxUnpaddedLength(unsigned int paddedLength) const;
00019         void Pad(RandomNumberGenerator &rng, const byte *raw, unsigned int inputLength, byte *padded, unsigned int paddedLength) const;
00020         DecodingResult Unpad(const byte *padded, unsigned int paddedLength, byte *raw) const;
00021 };
00022 
00023 NAMESPACE_END
00024 
00025 #endif

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