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# pkcspad.h

    00001 #ifndef CRYPTOPP_PKCSPAD_H
    00002 #define CRYPTOPP_PKCSPAD_H
    00003
    00004 #include "cryptlib.h"
    00005 #include "pubkey.h"
    00006
    00007 #ifdef CRYPTOPP_IS_DLL
    00008 #include "sha.h"
    00009 #endif
    00010
    00011 NAMESPACE_BEGIN(CryptoPP)
    00012
    00013 //! <a href="http://www.weidai.com/scan-mirror/ca.html#cem_PKCS1-1.5">EME-PKCS1-v1_5</a>
    00014 class PKCS_EncryptionPaddingScheme : public PK_EncryptionMessageEncodingMethod
    00015 {
    00016 public:
    00017         static const char * StaticAlgorithmName() {return "EME-PKCS1-v1_5";}
    00018
    00019         unsigned int MaxUnpaddedLength(unsigned int paddedLength) const;
    00020         void Pad(RandomNumberGenerator &rng, const byte *raw, unsigned int inputLength, byte *padded, unsigned int paddedLength, const NameValuePairs &parameters) const;
    00021         DecodingResult Unpad(const byte *padded, unsigned int paddedLength, byte *raw, const NameValuePairs &parameters) const;
    00022 };
    00023
    00024 template <class H> class PKCS_DigestDecoration
    00025 {
    00026 public:
    00027         static const byte decoration[];
    00028         static const unsigned int length;
    00029 };
    00030
    00031 // PKCS_DigestDecoration can be instantiated with the following
    00032 // classes as specified in PKCS#1 v2.0 and P1363a
    00033 class SHA;
    00034 class MD2;
    00035 class MD5;
    00036 class RIPEMD160;
    00037 class Tiger;
    00038 class SHA256;
    00039 class SHA384;
    00040 class SHA512;
    00041 // end of list
    00042
    00043 //! <a href="http://www.weidai.com/scan-mirror/sig.html#sem_PKCS1-1.5">EMSA-PKCS1-v1_5</a>
    00044 class CRYPTOPP_DLL PKCS1v15_SignatureMessageEncodingMethod : public PK_DeterministicSignatureMessageEncodingMethod
    00045 {
    00046 public:
    00047         static const char * StaticAlgorithmName() {return "EMSA-PKCS1-v1_5";}
    00048
    00049         void ComputeMessageRepresentative(RandomNumberGenerator &rng,
    00050                 const byte *recoverableMessage, unsigned int recoverableMessageLength,
    00051                 HashTransformation &hash, HashIdentifier hashIdentifier, bool messageEmpty,
    00052                 byte *representative, unsigned int representativeBitLength) const;
    00053
    00054         struct HashIdentifierLookup
    00055         {
    00056                 template <class H> struct HashIdentifierLookup2
    00057                 {
    00058                         static HashIdentifier Lookup()
    00059                         {
    00060                                 return HashIdentifier(PKCS_DigestDecoration<H>::decoration, PKCS_DigestDecoration<H>::length);
    00061                         }
    00062                 };
    00063         };
    00064 };
    00065
    00066 //! PKCS #1 version 1.5, for use with RSAES and RSASS
    00067 /*! Only the following hash functions are supported by this signature standard:
    00068         \dontinclude pkcspad.h
    00069         \skip can be instantiated
    00070         \until end of list
    00071 */
    00072 struct PKCS1v15 : public SignatureStandard, public EncryptionStandard
    00073 {
    00074         typedef PKCS_EncryptionPaddingScheme EncryptionMessageEncodingMethod;
    00075         typedef PKCS1v15_SignatureMessageEncodingMethod SignatureMessageEncodingMethod;
    00076 };
    00077
    00078 #ifdef CRYPTOPP_IS_DLL
    00079 CRYPTOPP_DLL_TEMPLATE_CLASS PKCS_DigestDecoration<SHA>;
    00080 #endif
    00081
    00082 NAMESPACE_END
    00083
    00084 #endif