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#ifndef CRYPTOPP_OAEP_H
#define CRYPTOPP_OAEP_H
#include "pubkey.h"
#include "sha.h"
NAMESPACE_BEGIN(CryptoPP)
extern byte OAEP_P_DEFAULT[]; // defined in misc.cpp
/// <a href="http://www.weidai.com/scan-mirror/ca.html#cem_OAEP-MGF1">EME-OAEP</a>, for use with RSAES
template <class H, class MGF=P1363_MGF1, byte *P=OAEP_P_DEFAULT, unsigned int PLen=0>
class OAEP : public PK_EncryptionMessageEncodingMethod, public EncryptionStandard
{
public:
static std::string StaticAlgorithmName() {return std::string("OAEP-") + MGF::StaticAlgorithmName() + "(" + H::StaticAlgorithmName() + ")";}
typedef OAEP<H, MGF, P, PLen> EncryptionMessageEncodingMethod;
unsigned int MaxUnpaddedLength(unsigned int paddedLength) const;
void Pad(RandomNumberGenerator &rng, const byte *raw, unsigned int inputLength, byte *padded, unsigned int paddedLength) const;
DecodingResult Unpad(const byte *padded, unsigned int paddedLength, byte *raw) const;
};
CRYPTOPP_DLL_TEMPLATE_CLASS OAEP<SHA>;
NAMESPACE_END
#endif
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