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authormadmaxoft <github@xoft.cz>2014-01-22 22:26:40 +0100
committermadmaxoft <github@xoft.cz>2014-01-22 22:26:40 +0100
commit34f13d589a2ebbcae9230732c7a763b3cdd88b41 (patch)
tree4f7bad4f90ca8f7a896d83951804f0207082cafb /lib/cryptopp/pubkey.h
parentReplacing CryptoPP with PolarSSL. (diff)
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Diffstat (limited to 'lib/cryptopp/pubkey.h')
-rw-r--r--lib/cryptopp/pubkey.h1678
1 files changed, 0 insertions, 1678 deletions
diff --git a/lib/cryptopp/pubkey.h b/lib/cryptopp/pubkey.h
deleted file mode 100644
index 3a3f3bcde..000000000
--- a/lib/cryptopp/pubkey.h
+++ /dev/null
@@ -1,1678 +0,0 @@
-// pubkey.h - written and placed in the public domain by Wei Dai
-
-#ifndef CRYPTOPP_PUBKEY_H
-#define CRYPTOPP_PUBKEY_H
-
-/** \file
-
- This file contains helper classes/functions for implementing public key algorithms.
-
- The class hierachies in this .h file tend to look like this:
-<pre>
- x1
- / \
- y1 z1
- | |
- x2<y1> x2<z1>
- | |
- y2 z2
- | |
- x3<y2> x3<z2>
- | |
- y3 z3
-</pre>
- - x1, y1, z1 are abstract interface classes defined in cryptlib.h
- - x2, y2, z2 are implementations of the interfaces using "abstract policies", which
- are pure virtual functions that should return interfaces to interchangeable algorithms.
- These classes have "Base" suffixes.
- - x3, y3, z3 hold actual algorithms and implement those virtual functions.
- These classes have "Impl" suffixes.
-
- The "TF_" prefix means an implementation using trapdoor functions on integers.
- The "DL_" prefix means an implementation using group operations (in groups where discrete log is hard).
-*/
-
-#include "modarith.h"
-#include "filters.h"
-#include "eprecomp.h"
-#include "fips140.h"
-#include "argnames.h"
-#include <memory>
-
-// VC60 workaround: this macro is defined in shlobj.h and conflicts with a template parameter used in this file
-#undef INTERFACE
-
-NAMESPACE_BEGIN(CryptoPP)
-
-//! _
-class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE TrapdoorFunctionBounds
-{
-public:
- virtual ~TrapdoorFunctionBounds() {}
-
- virtual Integer PreimageBound() const =0;
- virtual Integer ImageBound() const =0;
- virtual Integer MaxPreimage() const {return --PreimageBound();}
- virtual Integer MaxImage() const {return --ImageBound();}
-};
-
-//! _
-class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE RandomizedTrapdoorFunction : public TrapdoorFunctionBounds
-{
-public:
- virtual Integer ApplyRandomizedFunction(RandomNumberGenerator &rng, const Integer &x) const =0;
- virtual bool IsRandomized() const {return true;}
-};
-
-//! _
-class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE TrapdoorFunction : public RandomizedTrapdoorFunction
-{
-public:
- Integer ApplyRandomizedFunction(RandomNumberGenerator &rng, const Integer &x) const
- {return ApplyFunction(x);}
- bool IsRandomized() const {return false;}
-
- virtual Integer ApplyFunction(const Integer &x) const =0;
-};
-
-//! _
-class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE RandomizedTrapdoorFunctionInverse
-{
-public:
- virtual ~RandomizedTrapdoorFunctionInverse() {}
-
- virtual Integer CalculateRandomizedInverse(RandomNumberGenerator &rng, const Integer &x) const =0;
- virtual bool IsRandomized() const {return true;}
-};
-
-//! _
-class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE TrapdoorFunctionInverse : public RandomizedTrapdoorFunctionInverse
-{
-public:
- virtual ~TrapdoorFunctionInverse() {}
-
- Integer CalculateRandomizedInverse(RandomNumberGenerator &rng, const Integer &x) const
- {return CalculateInverse(rng, x);}
- bool IsRandomized() const {return false;}
-
- virtual Integer CalculateInverse(RandomNumberGenerator &rng, const Integer &x) const =0;
-};
-
-// ********************************************************
-
-//! message encoding method for public key encryption
-class CRYPTOPP_NO_VTABLE PK_EncryptionMessageEncodingMethod
-{
-public:
- virtual ~PK_EncryptionMessageEncodingMethod() {}
-
- virtual bool ParameterSupported(const char *name) const {return false;}
-
- //! max size of unpadded message in bytes, given max size of padded message in bits (1 less than size of modulus)
- virtual size_t MaxUnpaddedLength(size_t paddedLength) const =0;
-
- virtual void Pad(RandomNumberGenerator &rng, const byte *raw, size_t inputLength, byte *padded, size_t paddedBitLength, const NameValuePairs &parameters) const =0;
-
- virtual DecodingResult Unpad(const byte *padded, size_t paddedBitLength, byte *raw, const NameValuePairs &parameters) const =0;
-};
-
-// ********************************************************
-
-//! _
-template <class TFI, class MEI>
-class CRYPTOPP_NO_VTABLE TF_Base
-{
-protected:
- virtual const TrapdoorFunctionBounds & GetTrapdoorFunctionBounds() const =0;
-
- typedef TFI TrapdoorFunctionInterface;
- virtual const TrapdoorFunctionInterface & GetTrapdoorFunctionInterface() const =0;
-
- typedef MEI MessageEncodingInterface;
- virtual const MessageEncodingInterface & GetMessageEncodingInterface() const =0;
-};
-
-// ********************************************************
-
-//! _
-template <class BASE>
-class CRYPTOPP_NO_VTABLE PK_FixedLengthCryptoSystemImpl : public BASE
-{
-public:
- size_t MaxPlaintextLength(size_t ciphertextLength) const
- {return ciphertextLength == FixedCiphertextLength() ? FixedMaxPlaintextLength() : 0;}
- size_t CiphertextLength(size_t plaintextLength) const
- {return plaintextLength <= FixedMaxPlaintextLength() ? FixedCiphertextLength() : 0;}
-
- virtual size_t FixedMaxPlaintextLength() const =0;
- virtual size_t FixedCiphertextLength() const =0;
-};
-
-//! _
-template <class INTERFACE, class BASE>
-class CRYPTOPP_NO_VTABLE TF_CryptoSystemBase : public PK_FixedLengthCryptoSystemImpl<INTERFACE>, protected BASE
-{
-public:
- bool ParameterSupported(const char *name) const {return this->GetMessageEncodingInterface().ParameterSupported(name);}
- size_t FixedMaxPlaintextLength() const {return this->GetMessageEncodingInterface().MaxUnpaddedLength(PaddedBlockBitLength());}
- size_t FixedCiphertextLength() const {return this->GetTrapdoorFunctionBounds().MaxImage().ByteCount();}
-
-protected:
- size_t PaddedBlockByteLength() const {return BitsToBytes(PaddedBlockBitLength());}
- size_t PaddedBlockBitLength() const {return this->GetTrapdoorFunctionBounds().PreimageBound().BitCount()-1;}
-};
-
-//! _
-class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE TF_DecryptorBase : public TF_CryptoSystemBase<PK_Decryptor, TF_Base<TrapdoorFunctionInverse, PK_EncryptionMessageEncodingMethod> >
-{
-public:
- DecodingResult Decrypt(RandomNumberGenerator &rng, const byte *ciphertext, size_t ciphertextLength, byte *plaintext, const NameValuePairs &parameters = g_nullNameValuePairs) const;
-};
-
-//! _
-class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE TF_EncryptorBase : public TF_CryptoSystemBase<PK_Encryptor, TF_Base<RandomizedTrapdoorFunction, PK_EncryptionMessageEncodingMethod> >
-{
-public:
- void Encrypt(RandomNumberGenerator &rng, const byte *plaintext, size_t plaintextLength, byte *ciphertext, const NameValuePairs &parameters = g_nullNameValuePairs) const;
-};
-
-// ********************************************************
-
-typedef std::pair<const byte *, size_t> HashIdentifier;
-
-//! interface for message encoding method for public key signature schemes
-class CRYPTOPP_NO_VTABLE PK_SignatureMessageEncodingMethod
-{
-public:
- virtual ~PK_SignatureMessageEncodingMethod() {}
-
- virtual size_t MinRepresentativeBitLength(size_t hashIdentifierLength, size_t digestLength) const
- {return 0;}
- virtual size_t MaxRecoverableLength(size_t representativeBitLength, size_t hashIdentifierLength, size_t digestLength) const
- {return 0;}
-
- bool IsProbabilistic() const
- {return true;}
- bool AllowNonrecoverablePart() const
- {throw NotImplemented("PK_MessageEncodingMethod: this signature scheme does not support message recovery");}
- virtual bool RecoverablePartFirst() const
- {throw NotImplemented("PK_MessageEncodingMethod: this signature scheme does not support message recovery");}
-
- // for verification, DL
- virtual void ProcessSemisignature(HashTransformation &hash, const byte *semisignature, size_t semisignatureLength) const {}
-
- // for signature
- virtual void ProcessRecoverableMessage(HashTransformation &hash,
- const byte *recoverableMessage, size_t recoverableMessageLength,
- const byte *presignature, size_t presignatureLength,
- SecByteBlock &semisignature) const
- {
- if (RecoverablePartFirst())
- assert(!"ProcessRecoverableMessage() not implemented");
- }
-
- virtual void ComputeMessageRepresentative(RandomNumberGenerator &rng,
- const byte *recoverableMessage, size_t recoverableMessageLength,
- HashTransformation &hash, HashIdentifier hashIdentifier, bool messageEmpty,
- byte *representative, size_t representativeBitLength) const =0;
-
- virtual bool VerifyMessageRepresentative(
- HashTransformation &hash, HashIdentifier hashIdentifier, bool messageEmpty,
- byte *representative, size_t representativeBitLength) const =0;
-
- virtual DecodingResult RecoverMessageFromRepresentative( // for TF
- HashTransformation &hash, HashIdentifier hashIdentifier, bool messageEmpty,
- byte *representative, size_t representativeBitLength,
- byte *recoveredMessage) const
- {throw NotImplemented("PK_MessageEncodingMethod: this signature scheme does not support message recovery");}
-
- virtual DecodingResult RecoverMessageFromSemisignature( // for DL
- HashTransformation &hash, HashIdentifier hashIdentifier,
- const byte *presignature, size_t presignatureLength,
- const byte *semisignature, size_t semisignatureLength,
- byte *recoveredMessage) const
- {throw NotImplemented("PK_MessageEncodingMethod: this signature scheme does not support message recovery");}
-
- // VC60 workaround
- struct HashIdentifierLookup
- {
- template <class H> struct HashIdentifierLookup2
- {
- static HashIdentifier CRYPTOPP_API Lookup()
- {
- return HashIdentifier((const byte *)NULL, 0);
- }
- };
- };
-};
-
-class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE PK_DeterministicSignatureMessageEncodingMethod : public PK_SignatureMessageEncodingMethod
-{
-public:
- bool VerifyMessageRepresentative(
- HashTransformation &hash, HashIdentifier hashIdentifier, bool messageEmpty,
- byte *representative, size_t representativeBitLength) const;
-};
-
-class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE PK_RecoverableSignatureMessageEncodingMethod : public PK_SignatureMessageEncodingMethod
-{
-public:
- bool VerifyMessageRepresentative(
- HashTransformation &hash, HashIdentifier hashIdentifier, bool messageEmpty,
- byte *representative, size_t representativeBitLength) const;
-};
-
-class CRYPTOPP_DLL DL_SignatureMessageEncodingMethod_DSA : public PK_DeterministicSignatureMessageEncodingMethod
-{
-public:
- void ComputeMessageRepresentative(RandomNumberGenerator &rng,
- const byte *recoverableMessage, size_t recoverableMessageLength,
- HashTransformation &hash, HashIdentifier hashIdentifier, bool messageEmpty,
- byte *representative, size_t representativeBitLength) const;
-};
-
-class CRYPTOPP_DLL DL_SignatureMessageEncodingMethod_NR : public PK_DeterministicSignatureMessageEncodingMethod
-{
-public:
- void ComputeMessageRepresentative(RandomNumberGenerator &rng,
- const byte *recoverableMessage, size_t recoverableMessageLength,
- HashTransformation &hash, HashIdentifier hashIdentifier, bool messageEmpty,
- byte *representative, size_t representativeBitLength) const;
-};
-
-class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE PK_MessageAccumulatorBase : public PK_MessageAccumulator
-{
-public:
- PK_MessageAccumulatorBase() : m_empty(true) {}
-
- virtual HashTransformation & AccessHash() =0;
-
- void Update(const byte *input, size_t length)
- {
- AccessHash().Update(input, length);
- m_empty = m_empty && length == 0;
- }
-
- SecByteBlock m_recoverableMessage, m_representative, m_presignature, m_semisignature;
- Integer m_k, m_s;
- bool m_empty;
-};
-
-template <class HASH_ALGORITHM>
-class PK_MessageAccumulatorImpl : public PK_MessageAccumulatorBase, protected ObjectHolder<HASH_ALGORITHM>
-{
-public:
- HashTransformation & AccessHash() {return this->m_object;}
-};
-
-//! _
-template <class INTERFACE, class BASE>
-class CRYPTOPP_NO_VTABLE TF_SignatureSchemeBase : public INTERFACE, protected BASE
-{
-public:
- size_t SignatureLength() const
- {return this->GetTrapdoorFunctionBounds().MaxPreimage().ByteCount();}
- size_t MaxRecoverableLength() const
- {return this->GetMessageEncodingInterface().MaxRecoverableLength(MessageRepresentativeBitLength(), GetHashIdentifier().second, GetDigestSize());}
- size_t MaxRecoverableLengthFromSignatureLength(size_t signatureLength) const
- {return this->MaxRecoverableLength();}
-
- bool IsProbabilistic() const
- {return this->GetTrapdoorFunctionInterface().IsRandomized() || this->GetMessageEncodingInterface().IsProbabilistic();}
- bool AllowNonrecoverablePart() const
- {return this->GetMessageEncodingInterface().AllowNonrecoverablePart();}
- bool RecoverablePartFirst() const
- {return this->GetMessageEncodingInterface().RecoverablePartFirst();}
-
-protected:
- size_t MessageRepresentativeLength() const {return BitsToBytes(MessageRepresentativeBitLength());}
- size_t MessageRepresentativeBitLength() const {return this->GetTrapdoorFunctionBounds().ImageBound().BitCount()-1;}
- virtual HashIdentifier GetHashIdentifier() const =0;
- virtual size_t GetDigestSize() const =0;
-};
-
-//! _
-class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE TF_SignerBase : public TF_SignatureSchemeBase<PK_Signer, TF_Base<RandomizedTrapdoorFunctionInverse, PK_SignatureMessageEncodingMethod> >
-{
-public:
- void InputRecoverableMessage(PK_MessageAccumulator &messageAccumulator, const byte *recoverableMessage, size_t recoverableMessageLength) const;
- size_t SignAndRestart(RandomNumberGenerator &rng, PK_MessageAccumulator &messageAccumulator, byte *signature, bool restart=true) const;
-};
-
-//! _
-class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE TF_VerifierBase : public TF_SignatureSchemeBase<PK_Verifier, TF_Base<TrapdoorFunction, PK_SignatureMessageEncodingMethod> >
-{
-public:
- void InputSignature(PK_MessageAccumulator &messageAccumulator, const byte *signature, size_t signatureLength) const;
- bool VerifyAndRestart(PK_MessageAccumulator &messageAccumulator) const;
- DecodingResult RecoverAndRestart(byte *recoveredMessage, PK_MessageAccumulator &recoveryAccumulator) const;
-};
-
-// ********************************************************
-
-//! _
-template <class T1, class T2, class T3>
-struct TF_CryptoSchemeOptions
-{
- typedef T1 AlgorithmInfo;
- typedef T2 Keys;
- typedef typename Keys::PrivateKey PrivateKey;
- typedef typename Keys::PublicKey PublicKey;
- typedef T3 MessageEncodingMethod;
-};
-
-//! _
-template <class T1, class T2, class T3, class T4>
-struct TF_SignatureSchemeOptions : public TF_CryptoSchemeOptions<T1, T2, T3>
-{
- typedef T4 HashFunction;
-};
-
-//! _
-template <class BASE, class SCHEME_OPTIONS, class KEY_CLASS>
-class CRYPTOPP_NO_VTABLE TF_ObjectImplBase : public AlgorithmImpl<BASE, typename SCHEME_OPTIONS::AlgorithmInfo>
-{
-public:
- typedef SCHEME_OPTIONS SchemeOptions;
- typedef KEY_CLASS KeyClass;
-
- PublicKey & AccessPublicKey() {return AccessKey();}
- const PublicKey & GetPublicKey() const {return GetKey();}
-
- PrivateKey & AccessPrivateKey() {return AccessKey();}
- const PrivateKey & GetPrivateKey() const {return GetKey();}
-
- virtual const KeyClass & GetKey() const =0;
- virtual KeyClass & AccessKey() =0;
-
- const KeyClass & GetTrapdoorFunction() const {return GetKey();}
-
- PK_MessageAccumulator * NewSignatureAccumulator(RandomNumberGenerator &rng) const
- {
- return new PK_MessageAccumulatorImpl<CPP_TYPENAME SCHEME_OPTIONS::HashFunction>;
- }
- PK_MessageAccumulator * NewVerificationAccumulator() const
- {
- return new PK_MessageAccumulatorImpl<CPP_TYPENAME SCHEME_OPTIONS::HashFunction>;
- }
-
-protected:
- const typename BASE::MessageEncodingInterface & GetMessageEncodingInterface() const
- {return Singleton<CPP_TYPENAME SCHEME_OPTIONS::MessageEncodingMethod>().Ref();}
- const TrapdoorFunctionBounds & GetTrapdoorFunctionBounds() const
- {return GetKey();}
- const typename BASE::TrapdoorFunctionInterface & GetTrapdoorFunctionInterface() const
- {return GetKey();}
-
- // for signature scheme
- HashIdentifier GetHashIdentifier() const
- {
- typedef CPP_TYPENAME SchemeOptions::MessageEncodingMethod::HashIdentifierLookup::template HashIdentifierLookup2<CPP_TYPENAME SchemeOptions::HashFunction> L;
- return L::Lookup();
- }
- size_t GetDigestSize() const
- {
- typedef CPP_TYPENAME SchemeOptions::HashFunction H;
- return H::DIGESTSIZE;
- }
-};
-
-//! _
-template <class BASE, class SCHEME_OPTIONS, class KEY>
-class TF_ObjectImplExtRef : public TF_ObjectImplBase<BASE, SCHEME_OPTIONS, KEY>
-{
-public:
- TF_ObjectImplExtRef(const KEY *pKey = NULL) : m_pKey(pKey) {}
- void SetKeyPtr(const KEY *pKey) {m_pKey = pKey;}
-
- const KEY & GetKey() const {return *m_pKey;}
- KEY & AccessKey() {throw NotImplemented("TF_ObjectImplExtRef: cannot modify refererenced key");}
-
-private:
- const KEY * m_pKey;
-};
-
-//! _
-template <class BASE, class SCHEME_OPTIONS, class KEY_CLASS>
-class CRYPTOPP_NO_VTABLE TF_ObjectImpl : public TF_ObjectImplBase<BASE, SCHEME_OPTIONS, KEY_CLASS>
-{
-public:
- typedef KEY_CLASS KeyClass;
-
- const KeyClass & GetKey() const {return m_trapdoorFunction;}
- KeyClass & AccessKey() {return m_trapdoorFunction;}
-
-private:
- KeyClass m_trapdoorFunction;
-};
-
-//! _
-template <class SCHEME_OPTIONS>
-class TF_DecryptorImpl : public TF_ObjectImpl<TF_DecryptorBase, SCHEME_OPTIONS, typename SCHEME_OPTIONS::PrivateKey>
-{
-};
-
-//! _
-template <class SCHEME_OPTIONS>
-class TF_EncryptorImpl : public TF_ObjectImpl<TF_EncryptorBase, SCHEME_OPTIONS, typename SCHEME_OPTIONS::PublicKey>
-{
-};
-
-//! _
-template <class SCHEME_OPTIONS>
-class TF_SignerImpl : public TF_ObjectImpl<TF_SignerBase, SCHEME_OPTIONS, typename SCHEME_OPTIONS::PrivateKey>
-{
-};
-
-//! _
-template <class SCHEME_OPTIONS>
-class TF_VerifierImpl : public TF_ObjectImpl<TF_VerifierBase, SCHEME_OPTIONS, typename SCHEME_OPTIONS::PublicKey>
-{
-};
-
-// ********************************************************
-
-//! _
-class CRYPTOPP_NO_VTABLE MaskGeneratingFunction
-{
-public:
- virtual ~MaskGeneratingFunction() {}
- virtual void GenerateAndMask(HashTransformation &hash, byte *output, size_t outputLength, const byte *input, size_t inputLength, bool mask = true) const =0;
-};
-
-CRYPTOPP_DLL void CRYPTOPP_API P1363_MGF1KDF2_Common(HashTransformation &hash, byte *output, size_t outputLength, const byte *input, size_t inputLength, const byte *derivationParams, size_t derivationParamsLength, bool mask, unsigned int counterStart);
-
-//! _
-class P1363_MGF1 : public MaskGeneratingFunction
-{
-public:
- static const char * CRYPTOPP_API StaticAlgorithmName() {return "MGF1";}
- void GenerateAndMask(HashTransformation &hash, byte *output, size_t outputLength, const byte *input, size_t inputLength, bool mask = true) const
- {
- P1363_MGF1KDF2_Common(hash, output, outputLength, input, inputLength, NULL, 0, mask, 0);
- }
-};
-
-// ********************************************************
-
-//! _
-template <class H>
-class P1363_KDF2
-{
-public:
- static void CRYPTOPP_API DeriveKey(byte *output, size_t outputLength, const byte *input, size_t inputLength, const byte *derivationParams, size_t derivationParamsLength)
- {
- H h;
- P1363_MGF1KDF2_Common(h, output, outputLength, input, inputLength, derivationParams, derivationParamsLength, false, 1);
- }
-};
-
-// ********************************************************
-
-//! to be thrown by DecodeElement and AgreeWithStaticPrivateKey
-class DL_BadElement : public InvalidDataFormat
-{
-public:
- DL_BadElement() : InvalidDataFormat("CryptoPP: invalid group element") {}
-};
-
-//! interface for DL group parameters
-template <class T>
-class CRYPTOPP_NO_VTABLE DL_GroupParameters : public CryptoParameters
-{
- typedef DL_GroupParameters<T> ThisClass;
-
-public:
- typedef T Element;
-
- DL_GroupParameters() : m_validationLevel(0) {}
-
- // CryptoMaterial
- bool Validate(RandomNumberGenerator &rng, unsigned int level) const
- {
- if (!GetBasePrecomputation().IsInitialized())
- return false;
-
- if (m_validationLevel > level)
- return true;
-
- bool pass = ValidateGroup(rng, level);
- pass = pass && ValidateElement(level, GetSubgroupGenerator(), &GetBasePrecomputation());
-
- m_validationLevel = pass ? level+1 : 0;
-
- return pass;
- }
-
- bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const
- {
- return GetValueHelper(this, name, valueType, pValue)
- CRYPTOPP_GET_FUNCTION_ENTRY(SubgroupOrder)
- CRYPTOPP_GET_FUNCTION_ENTRY(SubgroupGenerator)
- ;
- }
-
- bool SupportsPrecomputation() const {return true;}
-
- void Precompute(unsigned int precomputationStorage=16)
- {
- AccessBasePrecomputation().Precompute(GetGroupPrecomputation(), GetSubgroupOrder().BitCount(), precomputationStorage);
- }
-
- void LoadPrecomputation(BufferedTransformation &storedPrecomputation)
- {
- AccessBasePrecomputation().Load(GetGroupPrecomputation(), storedPrecomputation);
- m_validationLevel = 0;
- }
-
- void SavePrecomputation(BufferedTransformation &storedPrecomputation) const
- {
- GetBasePrecomputation().Save(GetGroupPrecomputation(), storedPrecomputation);
- }
-
- // non-inherited
- virtual const Element & GetSubgroupGenerator() const {return GetBasePrecomputation().GetBase(GetGroupPrecomputation());}
- virtual void SetSubgroupGenerator(const Element &base) {AccessBasePrecomputation().SetBase(GetGroupPrecomputation(), base);}
- virtual Element ExponentiateBase(const Integer &exponent) const
- {
- return GetBasePrecomputation().Exponentiate(GetGroupPrecomputation(), exponent);
- }
- virtual Element ExponentiateElement(const Element &base, const Integer &exponent) const
- {
- Element result;
- SimultaneousExponentiate(&result, base, &exponent, 1);
- return result;
- }
-
- virtual const DL_GroupPrecomputation<Element> & GetGroupPrecomputation() const =0;
- virtual const DL_FixedBasePrecomputation<Element> & GetBasePrecomputation() const =0;
- virtual DL_FixedBasePrecomputation<Element> & AccessBasePrecomputation() =0;
- virtual const Integer & GetSubgroupOrder() const =0; // order of subgroup generated by base element
- virtual Integer GetMaxExponent() const =0;
- virtual Integer GetGroupOrder() const {return GetSubgroupOrder()*GetCofactor();} // one of these two needs to be overriden
- virtual Integer GetCofactor() const {return GetGroupOrder()/GetSubgroupOrder();}
- virtual unsigned int GetEncodedElementSize(bool reversible) const =0;
- virtual void EncodeElement(bool reversible, const Element &element, byte *encoded) const =0;
- virtual Element DecodeElement(const byte *encoded, bool checkForGroupMembership) const =0;
- virtual Integer ConvertElementToInteger(const Element &element) const =0;
- virtual bool ValidateGroup(RandomNumberGenerator &rng, unsigned int level) const =0;
- virtual bool ValidateElement(unsigned int level, const Element &element, const DL_FixedBasePrecomputation<Element> *precomp) const =0;
- virtual bool FastSubgroupCheckAvailable() const =0;
- virtual bool IsIdentity(const Element &element) const =0;
- virtual void SimultaneousExponentiate(Element *results, const Element &base, const Integer *exponents, unsigned int exponentsCount) const =0;
-
-protected:
- void ParametersChanged() {m_validationLevel = 0;}
-
-private:
- mutable unsigned int m_validationLevel;
-};
-
-//! _
-template <class GROUP_PRECOMP, class BASE_PRECOMP = DL_FixedBasePrecomputationImpl<CPP_TYPENAME GROUP_PRECOMP::Element>, class BASE = DL_GroupParameters<CPP_TYPENAME GROUP_PRECOMP::Element> >
-class DL_GroupParametersImpl : public BASE
-{
-public:
- typedef GROUP_PRECOMP GroupPrecomputation;
- typedef typename GROUP_PRECOMP::Element Element;
- typedef BASE_PRECOMP BasePrecomputation;
-
- const DL_GroupPrecomputation<Element> & GetGroupPrecomputation() const {return m_groupPrecomputation;}
- const DL_FixedBasePrecomputation<Element> & GetBasePrecomputation() const {return m_gpc;}
- DL_FixedBasePrecomputation<Element> & AccessBasePrecomputation() {return m_gpc;}
-
-protected:
- GROUP_PRECOMP m_groupPrecomputation;
- BASE_PRECOMP m_gpc;
-};
-
-//! _
-template <class T>
-class CRYPTOPP_NO_VTABLE DL_Key
-{
-public:
- virtual const DL_GroupParameters<T> & GetAbstractGroupParameters() const =0;
- virtual DL_GroupParameters<T> & AccessAbstractGroupParameters() =0;
-};
-
-//! interface for DL public keys
-template <class T>
-class CRYPTOPP_NO_VTABLE DL_PublicKey : public DL_Key<T>
-{
- typedef DL_PublicKey<T> ThisClass;
-
-public:
- typedef T Element;
-
- bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const
- {
- return GetValueHelper(this, name, valueType, pValue, &this->GetAbstractGroupParameters())
- CRYPTOPP_GET_FUNCTION_ENTRY(PublicElement);
- }
-
- void AssignFrom(const NameValuePairs &source);
-
- // non-inherited
- virtual const Element & GetPublicElement() const {return GetPublicPrecomputation().GetBase(this->GetAbstractGroupParameters().GetGroupPrecomputation());}
- virtual void SetPublicElement(const Element &y) {AccessPublicPrecomputation().SetBase(this->GetAbstractGroupParameters().GetGroupPrecomputation(), y);}
- virtual Element ExponentiatePublicElement(const Integer &exponent) const
- {
- const DL_GroupParameters<T> &params = this->GetAbstractGroupParameters();
- return GetPublicPrecomputation().Exponentiate(params.GetGroupPrecomputation(), exponent);
- }
- virtual Element CascadeExponentiateBaseAndPublicElement(const Integer &baseExp, const Integer &publicExp) const
- {
- const DL_GroupParameters<T> &params = this->GetAbstractGroupParameters();
- return params.GetBasePrecomputation().CascadeExponentiate(params.GetGroupPrecomputation(), baseExp, GetPublicPrecomputation(), publicExp);
- }
-
- virtual const DL_FixedBasePrecomputation<T> & GetPublicPrecomputation() const =0;
- virtual DL_FixedBasePrecomputation<T> & AccessPublicPrecomputation() =0;
-};
-
-//! interface for DL private keys
-template <class T>
-class CRYPTOPP_NO_VTABLE DL_PrivateKey : public DL_Key<T>
-{
- typedef DL_PrivateKey<T> ThisClass;
-
-public:
- typedef T Element;
-
- void MakePublicKey(DL_PublicKey<T> &pub) const
- {
- pub.AccessAbstractGroupParameters().AssignFrom(this->GetAbstractGroupParameters());
- pub.SetPublicElement(this->GetAbstractGroupParameters().ExponentiateBase(GetPrivateExponent()));
- }
-
- bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const
- {
- return GetValueHelper(this, name, valueType, pValue, &this->GetAbstractGroupParameters())
- CRYPTOPP_GET_FUNCTION_ENTRY(PrivateExponent);
- }
-
- void AssignFrom(const NameValuePairs &source)
- {
- this->AccessAbstractGroupParameters().AssignFrom(source);
- AssignFromHelper(this, source)
- CRYPTOPP_SET_FUNCTION_ENTRY(PrivateExponent);
- }
-
- virtual const Integer & GetPrivateExponent() const =0;
- virtual void SetPrivateExponent(const Integer &x) =0;
-};
-
-template <class T>
-void DL_PublicKey<T>::AssignFrom(const NameValuePairs &source)
-{
- DL_PrivateKey<T> *pPrivateKey = NULL;
- if (source.GetThisPointer(pPrivateKey))
- pPrivateKey->MakePublicKey(*this);
- else
- {
- this->AccessAbstractGroupParameters().AssignFrom(source);
- AssignFromHelper(this, source)
- CRYPTOPP_SET_FUNCTION_ENTRY(PublicElement);
- }
-}
-
-class OID;
-
-//! _
-template <class PK, class GP, class O = OID>
-class DL_KeyImpl : public PK
-{
-public:
- typedef GP GroupParameters;
-
- O GetAlgorithmID() const {return GetGroupParameters().GetAlgorithmID();}
-// void BERDecode(BufferedTransformation &bt)
-// {PK::BERDecode(bt);}
-// void DEREncode(BufferedTransformation &bt) const
-// {PK::DEREncode(bt);}
- bool BERDecodeAlgorithmParameters(BufferedTransformation &bt)
- {AccessGroupParameters().BERDecode(bt); return true;}
- bool DEREncodeAlgorithmParameters(BufferedTransformation &bt) const
- {GetGroupParameters().DEREncode(bt); return true;}
-
- const GP & GetGroupParameters() const {return m_groupParameters;}
- GP & AccessGroupParameters() {return m_groupParameters;}
-
-private:
- GP m_groupParameters;
-};
-
-class X509PublicKey;
-class PKCS8PrivateKey;
-
-//! _
-template <class GP>
-class DL_PrivateKeyImpl : public DL_PrivateKey<CPP_TYPENAME GP::Element>, public DL_KeyImpl<PKCS8PrivateKey, GP>
-{
-public:
- typedef typename GP::Element Element;
-
- // GeneratableCryptoMaterial
- bool Validate(RandomNumberGenerator &rng, unsigned int level) const
- {
- bool pass = GetAbstractGroupParameters().Validate(rng, level);
-
- const Integer &q = GetAbstractGroupParameters().GetSubgroupOrder();
- const Integer &x = GetPrivateExponent();
-
- pass = pass && x.IsPositive() && x < q;
- if (level >= 1)
- pass = pass && Integer::Gcd(x, q) == Integer::One();
- return pass;
- }
-
- bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const
- {
- return GetValueHelper<DL_PrivateKey<Element> >(this, name, valueType, pValue).Assignable();
- }
-
- void AssignFrom(const NameValuePairs &source)
- {
- AssignFromHelper<DL_PrivateKey<Element> >(this, source);
- }
-
- void GenerateRandom(RandomNumberGenerator &rng, const NameValuePairs &params)
- {
- if (!params.GetThisObject(this->AccessGroupParameters()))
- this->AccessGroupParameters().GenerateRandom(rng, params);
-// std::pair<const byte *, int> seed;
- Integer x(rng, Integer::One(), GetAbstractGroupParameters().GetMaxExponent());
-// Integer::ANY, Integer::Zero(), Integer::One(),
-// params.GetValue("DeterministicKeyGenerationSeed", seed) ? &seed : NULL);
- SetPrivateExponent(x);
- }
-
- bool SupportsPrecomputation() const {return true;}
-
- void Precompute(unsigned int precomputationStorage=16)
- {AccessAbstractGroupParameters().Precompute(precomputationStorage);}
-
- void LoadPrecomputation(BufferedTransformation &storedPrecomputation)
- {AccessAbstractGroupParameters().LoadPrecomputation(storedPrecomputation);}
-
- void SavePrecomputation(BufferedTransformation &storedPrecomputation) const
- {GetAbstractGroupParameters().SavePrecomputation(storedPrecomputation);}
-
- // DL_Key
- const DL_GroupParameters<Element> & GetAbstractGroupParameters() const {return this->GetGroupParameters();}
- DL_GroupParameters<Element> & AccessAbstractGroupParameters() {return this->AccessGroupParameters();}
-
- // DL_PrivateKey
- const Integer & GetPrivateExponent() const {return m_x;}
- void SetPrivateExponent(const Integer &x) {m_x = x;}
-
- // PKCS8PrivateKey
- void BERDecodePrivateKey(BufferedTransformation &bt, bool, size_t)
- {m_x.BERDecode(bt);}
- void DEREncodePrivateKey(BufferedTransformation &bt) const
- {m_x.DEREncode(bt);}
-
-private:
- Integer m_x;
-};
-
-//! _
-template <class BASE, class SIGNATURE_SCHEME>
-class DL_PrivateKey_WithSignaturePairwiseConsistencyTest : public BASE
-{
-public:
- void GenerateRandom(RandomNumberGenerator &rng, const NameValuePairs &params)
- {
- BASE::GenerateRandom(rng, params);
-
- if (FIPS_140_2_ComplianceEnabled())
- {
- typename SIGNATURE_SCHEME::Signer signer(*this);
- typename SIGNATURE_SCHEME::Verifier verifier(signer);
- SignaturePairwiseConsistencyTest_FIPS_140_Only(signer, verifier);
- }
- }
-};
-
-//! _
-template <class GP>
-class DL_PublicKeyImpl : public DL_PublicKey<typename GP::Element>, public DL_KeyImpl<X509PublicKey, GP>
-{
-public:
- typedef typename GP::Element Element;
-
- // CryptoMaterial
- bool Validate(RandomNumberGenerator &rng, unsigned int level) const
- {
- bool pass = GetAbstractGroupParameters().Validate(rng, level);
- pass = pass && GetAbstractGroupParameters().ValidateElement(level, this->GetPublicElement(), &GetPublicPrecomputation());
- return pass;
- }
-
- bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const
- {
- return GetValueHelper<DL_PublicKey<Element> >(this, name, valueType, pValue).Assignable();
- }
-
- void AssignFrom(const NameValuePairs &source)
- {
- AssignFromHelper<DL_PublicKey<Element> >(this, source);
- }
-
- bool SupportsPrecomputation() const {return true;}
-
- void Precompute(unsigned int precomputationStorage=16)
- {
- AccessAbstractGroupParameters().Precompute(precomputationStorage);
- AccessPublicPrecomputation().Precompute(GetAbstractGroupParameters().GetGroupPrecomputation(), GetAbstractGroupParameters().GetSubgroupOrder().BitCount(), precomputationStorage);
- }
-
- void LoadPrecomputation(BufferedTransformation &storedPrecomputation)
- {
- AccessAbstractGroupParameters().LoadPrecomputation(storedPrecomputation);
- AccessPublicPrecomputation().Load(GetAbstractGroupParameters().GetGroupPrecomputation(), storedPrecomputation);
- }
-
- void SavePrecomputation(BufferedTransformation &storedPrecomputation) const
- {
- GetAbstractGroupParameters().SavePrecomputation(storedPrecomputation);
- GetPublicPrecomputation().Save(GetAbstractGroupParameters().GetGroupPrecomputation(), storedPrecomputation);
- }
-
- // DL_Key
- const DL_GroupParameters<Element> & GetAbstractGroupParameters() const {return this->GetGroupParameters();}
- DL_GroupParameters<Element> & AccessAbstractGroupParameters() {return this->AccessGroupParameters();}
-
- // DL_PublicKey
- const DL_FixedBasePrecomputation<Element> & GetPublicPrecomputation() const {return m_ypc;}
- DL_FixedBasePrecomputation<Element> & AccessPublicPrecomputation() {return m_ypc;}
-
- // non-inherited
- bool operator==(const DL_PublicKeyImpl<GP> &rhs) const
- {return this->GetGroupParameters() == rhs.GetGroupParameters() && this->GetPublicElement() == rhs.GetPublicElement();}
-
-private:
- typename GP::BasePrecomputation m_ypc;
-};
-
-//! interface for Elgamal-like signature algorithms
-template <class T>
-class CRYPTOPP_NO_VTABLE DL_ElgamalLikeSignatureAlgorithm
-{
-public:
- virtual void Sign(const DL_GroupParameters<T> &params, const Integer &privateKey, const Integer &k, const Integer &e, Integer &r, Integer &s) const =0;
- virtual bool Verify(const DL_GroupParameters<T> &params, const DL_PublicKey<T> &publicKey, const Integer &e, const Integer &r, const Integer &s) const =0;
- virtual Integer RecoverPresignature(const DL_GroupParameters<T> &params, const DL_PublicKey<T> &publicKey, const Integer &r, const Integer &s) const
- {throw NotImplemented("DL_ElgamalLikeSignatureAlgorithm: this signature scheme does not support message recovery");}
- virtual size_t RLen(const DL_GroupParameters<T> &params) const
- {return params.GetSubgroupOrder().ByteCount();}
- virtual size_t SLen(const DL_GroupParameters<T> &params) const
- {return params.GetSubgroupOrder().ByteCount();}
-};
-
-//! interface for DL key agreement algorithms
-template <class T>
-class CRYPTOPP_NO_VTABLE DL_KeyAgreementAlgorithm
-{
-public:
- typedef T Element;
-
- virtual Element AgreeWithEphemeralPrivateKey(const DL_GroupParameters<Element> &params, const DL_FixedBasePrecomputation<Element> &publicPrecomputation, const Integer &privateExponent) const =0;
- virtual Element AgreeWithStaticPrivateKey(const DL_GroupParameters<Element> &params, const Element &publicElement, bool validateOtherPublicKey, const Integer &privateExponent) const =0;
-};
-
-//! interface for key derivation algorithms used in DL cryptosystems
-template <class T>
-class CRYPTOPP_NO_VTABLE DL_KeyDerivationAlgorithm
-{
-public:
- virtual bool ParameterSupported(const char *name) const {return false;}
- virtual void Derive(const DL_GroupParameters<T> &groupParams, byte *derivedKey, size_t derivedLength, const T &agreedElement, const T &ephemeralPublicKey, const NameValuePairs &derivationParams) const =0;
-};
-
-//! interface for symmetric encryption algorithms used in DL cryptosystems
-class CRYPTOPP_NO_VTABLE DL_SymmetricEncryptionAlgorithm
-{
-public:
- virtual bool ParameterSupported(const char *name) const {return false;}
- virtual size_t GetSymmetricKeyLength(size_t plaintextLength) const =0;
- virtual size_t GetSymmetricCiphertextLength(size_t plaintextLength) const =0;
- virtual size_t GetMaxSymmetricPlaintextLength(size_t ciphertextLength) const =0;
- virtual void SymmetricEncrypt(RandomNumberGenerator &rng, const byte *key, const byte *plaintext, size_t plaintextLength, byte *ciphertext, const NameValuePairs &parameters) const =0;
- virtual DecodingResult SymmetricDecrypt(const byte *key, const byte *ciphertext, size_t ciphertextLength, byte *plaintext, const NameValuePairs &parameters) const =0;
-};
-
-//! _
-template <class KI>
-class CRYPTOPP_NO_VTABLE DL_Base
-{
-protected:
- typedef KI KeyInterface;
- typedef typename KI::Element Element;
-
- const DL_GroupParameters<Element> & GetAbstractGroupParameters() const {return GetKeyInterface().GetAbstractGroupParameters();}
- DL_GroupParameters<Element> & AccessAbstractGroupParameters() {return AccessKeyInterface().AccessAbstractGroupParameters();}
-
- virtual KeyInterface & AccessKeyInterface() =0;
- virtual const KeyInterface & GetKeyInterface() const =0;
-};
-
-//! _
-template <class INTERFACE, class KEY_INTERFACE>
-class CRYPTOPP_NO_VTABLE DL_SignatureSchemeBase : public INTERFACE, public DL_Base<KEY_INTERFACE>
-{
-public:
- size_t SignatureLength() const
- {
- return GetSignatureAlgorithm().RLen(this->GetAbstractGroupParameters())
- + GetSignatureAlgorithm().SLen(this->GetAbstractGroupParameters());
- }
- size_t MaxRecoverableLength() const
- {return GetMessageEncodingInterface().MaxRecoverableLength(0, GetHashIdentifier().second, GetDigestSize());}
- size_t MaxRecoverableLengthFromSignatureLength(size_t signatureLength) const
- {assert(false); return 0;} // TODO
-
- bool IsProbabilistic() const
- {return true;}
- bool AllowNonrecoverablePart() const
- {return GetMessageEncodingInterface().AllowNonrecoverablePart();}
- bool RecoverablePartFirst() const
- {return GetMessageEncodingInterface().RecoverablePartFirst();}
-
-protected:
- size_t MessageRepresentativeLength() const {return BitsToBytes(MessageRepresentativeBitLength());}
- size_t MessageRepresentativeBitLength() const {return this->GetAbstractGroupParameters().GetSubgroupOrder().BitCount();}
-
- virtual const DL_ElgamalLikeSignatureAlgorithm<CPP_TYPENAME KEY_INTERFACE::Element> & GetSignatureAlgorithm() const =0;
- virtual const PK_SignatureMessageEncodingMethod & GetMessageEncodingInterface() const =0;
- virtual HashIdentifier GetHashIdentifier() const =0;
- virtual size_t GetDigestSize() const =0;
-};
-
-//! _
-template <class T>
-class CRYPTOPP_NO_VTABLE DL_SignerBase : public DL_SignatureSchemeBase<PK_Signer, DL_PrivateKey<T> >
-{
-public:
- // for validation testing
- void RawSign(const Integer &k, const Integer &e, Integer &r, Integer &s) const
- {
- const DL_ElgamalLikeSignatureAlgorithm<T> &alg = this->GetSignatureAlgorithm();
- const DL_GroupParameters<T> &params = this->GetAbstractGroupParameters();
- const DL_PrivateKey<T> &key = this->GetKeyInterface();
-
- r = params.ConvertElementToInteger(params.ExponentiateBase(k));
- alg.Sign(params, key.GetPrivateExponent(), k, e, r, s);
- }
-
- void InputRecoverableMessage(PK_MessageAccumulator &messageAccumulator, const byte *recoverableMessage, size_t recoverableMessageLength) const
- {
- PK_MessageAccumulatorBase &ma = static_cast<PK_MessageAccumulatorBase &>(messageAccumulator);
- ma.m_recoverableMessage.Assign(recoverableMessage, recoverableMessageLength);
- this->GetMessageEncodingInterface().ProcessRecoverableMessage(ma.AccessHash(),
- recoverableMessage, recoverableMessageLength,
- ma.m_presignature, ma.m_presignature.size(),
- ma.m_semisignature);
- }
-
- size_t SignAndRestart(RandomNumberGenerator &rng, PK_MessageAccumulator &messageAccumulator, byte *signature, bool restart) const
- {
- this->GetMaterial().DoQuickSanityCheck();
-
- PK_MessageAccumulatorBase &ma = static_cast<PK_MessageAccumulatorBase &>(messageAccumulator);
- const DL_ElgamalLikeSignatureAlgorithm<T> &alg = this->GetSignatureAlgorithm();
- const DL_GroupParameters<T> &params = this->GetAbstractGroupParameters();
- const DL_PrivateKey<T> &key = this->GetKeyInterface();
-
- SecByteBlock representative(this->MessageRepresentativeLength());
- this->GetMessageEncodingInterface().ComputeMessageRepresentative(
- rng,
- ma.m_recoverableMessage, ma.m_recoverableMessage.size(),
- ma.AccessHash(), this->GetHashIdentifier(), ma.m_empty,
- representative, this->MessageRepresentativeBitLength());
- ma.m_empty = true;
- Integer e(representative, representative.size());
-
- // hash message digest into random number k to prevent reusing the same k on a different messages
- // after virtual machine rollback
- if (rng.CanIncorporateEntropy())
- rng.IncorporateEntropy(representative, representative.size());
- Integer k(rng, 1, params.GetSubgroupOrder()-1);
- Integer r, s;
- r = params.ConvertElementToInteger(params.ExponentiateBase(k));
- alg.Sign(params, key.GetPrivateExponent(), k, e, r, s);
-
- /*
- Integer r, s;
- if (this->MaxRecoverableLength() > 0)
- r.Decode(ma.m_semisignature, ma.m_semisignature.size());
- else
- r.Decode(ma.m_presignature, ma.m_presignature.size());
- alg.Sign(params, key.GetPrivateExponent(), ma.m_k, e, r, s);
- */
-
- size_t rLen = alg.RLen(params);
- r.Encode(signature, rLen);
- s.Encode(signature+rLen, alg.SLen(params));
-
- if (restart)
- RestartMessageAccumulator(rng, ma);
-
- return this->SignatureLength();
- }
-
-protected:
- void RestartMessageAccumulator(RandomNumberGenerator &rng, PK_MessageAccumulatorBase &ma) const
- {
- // k needs to be generated before hashing for signature schemes with recovery
- // but to defend against VM rollbacks we need to generate k after hashing.
- // so this code is commented out, since no DL-based signature scheme with recovery
- // has been implemented in Crypto++ anyway
- /*
- const DL_ElgamalLikeSignatureAlgorithm<T> &alg = this->GetSignatureAlgorithm();
- const DL_GroupParameters<T> &params = this->GetAbstractGroupParameters();
- ma.m_k.Randomize(rng, 1, params.GetSubgroupOrder()-1);
- ma.m_presignature.New(params.GetEncodedElementSize(false));
- params.ConvertElementToInteger(params.ExponentiateBase(ma.m_k)).Encode(ma.m_presignature, ma.m_presignature.size());
- */
- }
-};
-
-//! _
-template <class T>
-class CRYPTOPP_NO_VTABLE DL_VerifierBase : public DL_SignatureSchemeBase<PK_Verifier, DL_PublicKey<T> >
-{
-public:
- void InputSignature(PK_MessageAccumulator &messageAccumulator, const byte *signature, size_t signatureLength) const
- {
- PK_MessageAccumulatorBase &ma = static_cast<PK_MessageAccumulatorBase &>(messageAccumulator);
- const DL_ElgamalLikeSignatureAlgorithm<T> &alg = this->GetSignatureAlgorithm();
- const DL_GroupParameters<T> &params = this->GetAbstractGroupParameters();
-
- size_t rLen = alg.RLen(params);
- ma.m_semisignature.Assign(signature, rLen);
- ma.m_s.Decode(signature+rLen, alg.SLen(params));
-
- this->GetMessageEncodingInterface().ProcessSemisignature(ma.AccessHash(), ma.m_semisignature, ma.m_semisignature.size());
- }
-
- bool VerifyAndRestart(PK_MessageAccumulator &messageAccumulator) const
- {
- this->GetMaterial().DoQuickSanityCheck();
-
- PK_MessageAccumulatorBase &ma = static_cast<PK_MessageAccumulatorBase &>(messageAccumulator);
- const DL_ElgamalLikeSignatureAlgorithm<T> &alg = this->GetSignatureAlgorithm();
- const DL_GroupParameters<T> &params = this->GetAbstractGroupParameters();
- const DL_PublicKey<T> &key = this->GetKeyInterface();
-
- SecByteBlock representative(this->MessageRepresentativeLength());
- this->GetMessageEncodingInterface().ComputeMessageRepresentative(NullRNG(), ma.m_recoverableMessage, ma.m_recoverableMessage.size(),
- ma.AccessHash(), this->GetHashIdentifier(), ma.m_empty,
- representative, this->MessageRepresentativeBitLength());
- ma.m_empty = true;
- Integer e(representative, representative.size());
-
- Integer r(ma.m_semisignature, ma.m_semisignature.size());
- return alg.Verify(params, key, e, r, ma.m_s);
- }
-
- DecodingResult RecoverAndRestart(byte *recoveredMessage, PK_MessageAccumulator &messageAccumulator) const
- {
- this->GetMaterial().DoQuickSanityCheck();
-
- PK_MessageAccumulatorBase &ma = static_cast<PK_MessageAccumulatorBase &>(messageAccumulator);
- const DL_ElgamalLikeSignatureAlgorithm<T> &alg = this->GetSignatureAlgorithm();
- const DL_GroupParameters<T> &params = this->GetAbstractGroupParameters();
- const DL_PublicKey<T> &key = this->GetKeyInterface();
-
- SecByteBlock representative(this->MessageRepresentativeLength());
- this->GetMessageEncodingInterface().ComputeMessageRepresentative(
- NullRNG(),
- ma.m_recoverableMessage, ma.m_recoverableMessage.size(),
- ma.AccessHash(), this->GetHashIdentifier(), ma.m_empty,
- representative, this->MessageRepresentativeBitLength());
- ma.m_empty = true;
- Integer e(representative, representative.size());
-
- ma.m_presignature.New(params.GetEncodedElementSize(false));
- Integer r(ma.m_semisignature, ma.m_semisignature.size());
- alg.RecoverPresignature(params, key, r, ma.m_s).Encode(ma.m_presignature, ma.m_presignature.size());
-
- return this->GetMessageEncodingInterface().RecoverMessageFromSemisignature(
- ma.AccessHash(), this->GetHashIdentifier(),
- ma.m_presignature, ma.m_presignature.size(),
- ma.m_semisignature, ma.m_semisignature.size(),
- recoveredMessage);
- }
-};
-
-//! _
-template <class PK, class KI>
-class CRYPTOPP_NO_VTABLE DL_CryptoSystemBase : public PK, public DL_Base<KI>
-{
-public:
- typedef typename DL_Base<KI>::Element Element;
-
- size_t MaxPlaintextLength(size_t ciphertextLength) const
- {
- unsigned int minLen = this->GetAbstractGroupParameters().GetEncodedElementSize(true);
- return ciphertextLength < minLen ? 0 : GetSymmetricEncryptionAlgorithm().GetMaxSymmetricPlaintextLength(ciphertextLength - minLen);
- }
-
- size_t CiphertextLength(size_t plaintextLength) const
- {
- size_t len = GetSymmetricEncryptionAlgorithm().GetSymmetricCiphertextLength(plaintextLength);
- return len == 0 ? 0 : this->GetAbstractGroupParameters().GetEncodedElementSize(true) + len;
- }
-
- bool ParameterSupported(const char *name) const
- {return GetKeyDerivationAlgorithm().ParameterSupported(name) || GetSymmetricEncryptionAlgorithm().ParameterSupported(name);}
-
-protected:
- virtual const DL_KeyAgreementAlgorithm<Element> & GetKeyAgreementAlgorithm() const =0;
- virtual const DL_KeyDerivationAlgorithm<Element> & GetKeyDerivationAlgorithm() const =0;
- virtual const DL_SymmetricEncryptionAlgorithm & GetSymmetricEncryptionAlgorithm() const =0;
-};
-
-//! _
-template <class T>
-class CRYPTOPP_NO_VTABLE DL_DecryptorBase : public DL_CryptoSystemBase<PK_Decryptor, DL_PrivateKey<T> >
-{
-public:
- typedef T Element;
-
- DecodingResult Decrypt(RandomNumberGenerator &rng, const byte *ciphertext, size_t ciphertextLength, byte *plaintext, const NameValuePairs &parameters = g_nullNameValuePairs) const
- {
- try
- {
- const DL_KeyAgreementAlgorithm<T> &agreeAlg = this->GetKeyAgreementAlgorithm();
- const DL_KeyDerivationAlgorithm<T> &derivAlg = this->GetKeyDerivationAlgorithm();
- const DL_SymmetricEncryptionAlgorithm &encAlg = this->GetSymmetricEncryptionAlgorithm();
- const DL_GroupParameters<T> &params = this->GetAbstractGroupParameters();
- const DL_PrivateKey<T> &key = this->GetKeyInterface();
-
- Element q = params.DecodeElement(ciphertext, true);
- size_t elementSize = params.GetEncodedElementSize(true);
- ciphertext += elementSize;
- ciphertextLength -= elementSize;
-
- Element z = agreeAlg.AgreeWithStaticPrivateKey(params, q, true, key.GetPrivateExponent());
-
- SecByteBlock derivedKey(encAlg.GetSymmetricKeyLength(encAlg.GetMaxSymmetricPlaintextLength(ciphertextLength)));
- derivAlg.Derive(params, derivedKey, derivedKey.size(), z, q, parameters);
-
- return encAlg.SymmetricDecrypt(derivedKey, ciphertext, ciphertextLength, plaintext, parameters);
- }
- catch (DL_BadElement &)
- {
- return DecodingResult();
- }
- }
-};
-
-//! _
-template <class T>
-class CRYPTOPP_NO_VTABLE DL_EncryptorBase : public DL_CryptoSystemBase<PK_Encryptor, DL_PublicKey<T> >
-{
-public:
- typedef T Element;
-
- void Encrypt(RandomNumberGenerator &rng, const byte *plaintext, size_t plaintextLength, byte *ciphertext, const NameValuePairs &parameters = g_nullNameValuePairs) const
- {
- const DL_KeyAgreementAlgorithm<T> &agreeAlg = this->GetKeyAgreementAlgorithm();
- const DL_KeyDerivationAlgorithm<T> &derivAlg = this->GetKeyDerivationAlgorithm();
- const DL_SymmetricEncryptionAlgorithm &encAlg = this->GetSymmetricEncryptionAlgorithm();
- const DL_GroupParameters<T> &params = this->GetAbstractGroupParameters();
- const DL_PublicKey<T> &key = this->GetKeyInterface();
-
- Integer x(rng, Integer::One(), params.GetMaxExponent());
- Element q = params.ExponentiateBase(x);
- params.EncodeElement(true, q, ciphertext);
- unsigned int elementSize = params.GetEncodedElementSize(true);
- ciphertext += elementSize;
-
- Element z = agreeAlg.AgreeWithEphemeralPrivateKey(params, key.GetPublicPrecomputation(), x);
-
- SecByteBlock derivedKey(encAlg.GetSymmetricKeyLength(plaintextLength));
- derivAlg.Derive(params, derivedKey, derivedKey.size(), z, q, parameters);
-
- encAlg.SymmetricEncrypt(rng, derivedKey, plaintext, plaintextLength, ciphertext, parameters);
- }
-};
-
-//! _
-template <class T1, class T2>
-struct DL_SchemeOptionsBase
-{
- typedef T1 AlgorithmInfo;
- typedef T2 GroupParameters;
- typedef typename GroupParameters::Element Element;
-};
-
-//! _
-template <class T1, class T2>
-struct DL_KeyedSchemeOptions : public DL_SchemeOptionsBase<T1, typename T2::PublicKey::GroupParameters>
-{
- typedef T2 Keys;
- typedef typename Keys::PrivateKey PrivateKey;
- typedef typename Keys::PublicKey PublicKey;
-};
-
-//! _
-template <class T1, class T2, class T3, class T4, class T5>
-struct DL_SignatureSchemeOptions : public DL_KeyedSchemeOptions<T1, T2>
-{
- typedef T3 SignatureAlgorithm;
- typedef T4 MessageEncodingMethod;
- typedef T5 HashFunction;
-};
-
-//! _
-template <class T1, class T2, class T3, class T4, class T5>
-struct DL_CryptoSchemeOptions : public DL_KeyedSchemeOptions<T1, T2>
-{
- typedef T3 KeyAgreementAlgorithm;
- typedef T4 KeyDerivationAlgorithm;
- typedef T5 SymmetricEncryptionAlgorithm;
-};
-
-//! _
-template <class BASE, class SCHEME_OPTIONS, class KEY>
-class CRYPTOPP_NO_VTABLE DL_ObjectImplBase : public AlgorithmImpl<BASE, typename SCHEME_OPTIONS::AlgorithmInfo>
-{
-public:
- typedef SCHEME_OPTIONS SchemeOptions;
- typedef typename KEY::Element Element;
-
- PrivateKey & AccessPrivateKey() {return m_key;}
- PublicKey & AccessPublicKey() {return m_key;}
-
- // KeyAccessor
- const KEY & GetKey() const {return m_key;}
- KEY & AccessKey() {return m_key;}
-
-protected:
- typename BASE::KeyInterface & AccessKeyInterface() {return m_key;}
- const typename BASE::KeyInterface & GetKeyInterface() const {return m_key;}
-
- // for signature scheme
- HashIdentifier GetHashIdentifier() const
- {
- typedef typename SchemeOptions::MessageEncodingMethod::HashIdentifierLookup HashLookup;
- return HashLookup::template HashIdentifierLookup2<CPP_TYPENAME SchemeOptions::HashFunction>::Lookup();
- }
- size_t GetDigestSize() const
- {
- typedef CPP_TYPENAME SchemeOptions::HashFunction H;
- return H::DIGESTSIZE;
- }
-
-private:
- KEY m_key;
-};
-
-//! _
-template <class BASE, class SCHEME_OPTIONS, class KEY>
-class CRYPTOPP_NO_VTABLE DL_ObjectImpl : public DL_ObjectImplBase<BASE, SCHEME_OPTIONS, KEY>
-{
-public:
- typedef typename KEY::Element Element;
-
-protected:
- const DL_ElgamalLikeSignatureAlgorithm<Element> & GetSignatureAlgorithm() const
- {return Singleton<CPP_TYPENAME SCHEME_OPTIONS::SignatureAlgorithm>().Ref();}
- const DL_KeyAgreementAlgorithm<Element> & GetKeyAgreementAlgorithm() const
- {return Singleton<CPP_TYPENAME SCHEME_OPTIONS::KeyAgreementAlgorithm>().Ref();}
- const DL_KeyDerivationAlgorithm<Element> & GetKeyDerivationAlgorithm() const
- {return Singleton<CPP_TYPENAME SCHEME_OPTIONS::KeyDerivationAlgorithm>().Ref();}
- const DL_SymmetricEncryptionAlgorithm & GetSymmetricEncryptionAlgorithm() const
- {return Singleton<CPP_TYPENAME SCHEME_OPTIONS::SymmetricEncryptionAlgorithm>().Ref();}
- HashIdentifier GetHashIdentifier() const
- {return HashIdentifier();}
- const PK_SignatureMessageEncodingMethod & GetMessageEncodingInterface() const
- {return Singleton<CPP_TYPENAME SCHEME_OPTIONS::MessageEncodingMethod>().Ref();}
-};
-
-//! _
-template <class SCHEME_OPTIONS>
-class DL_SignerImpl : public DL_ObjectImpl<DL_SignerBase<typename SCHEME_OPTIONS::Element>, SCHEME_OPTIONS, typename SCHEME_OPTIONS::PrivateKey>
-{
-public:
- PK_MessageAccumulator * NewSignatureAccumulator(RandomNumberGenerator &rng) const
- {
- std::auto_ptr<PK_MessageAccumulatorBase> p(new PK_MessageAccumulatorImpl<CPP_TYPENAME SCHEME_OPTIONS::HashFunction>);
- this->RestartMessageAccumulator(rng, *p);
- return p.release();
- }
-};
-
-//! _
-template <class SCHEME_OPTIONS>
-class DL_VerifierImpl : public DL_ObjectImpl<DL_VerifierBase<typename SCHEME_OPTIONS::Element>, SCHEME_OPTIONS, typename SCHEME_OPTIONS::PublicKey>
-{
-public:
- PK_MessageAccumulator * NewVerificationAccumulator() const
- {
- return new PK_MessageAccumulatorImpl<CPP_TYPENAME SCHEME_OPTIONS::HashFunction>;
- }
-};
-
-//! _
-template <class SCHEME_OPTIONS>
-class DL_EncryptorImpl : public DL_ObjectImpl<DL_EncryptorBase<typename SCHEME_OPTIONS::Element>, SCHEME_OPTIONS, typename SCHEME_OPTIONS::PublicKey>
-{
-};
-
-//! _
-template <class SCHEME_OPTIONS>
-class DL_DecryptorImpl : public DL_ObjectImpl<DL_DecryptorBase<typename SCHEME_OPTIONS::Element>, SCHEME_OPTIONS, typename SCHEME_OPTIONS::PrivateKey>
-{
-};
-
-// ********************************************************
-
-//! _
-template <class T>
-class CRYPTOPP_NO_VTABLE DL_SimpleKeyAgreementDomainBase : public SimpleKeyAgreementDomain
-{
-public:
- typedef T Element;
-
- CryptoParameters & AccessCryptoParameters() {return AccessAbstractGroupParameters();}
- unsigned int AgreedValueLength() const {return GetAbstractGroupParameters().GetEncodedElementSize(false);}
- unsigned int PrivateKeyLength() const {return GetAbstractGroupParameters().GetSubgroupOrder().ByteCount();}
- unsigned int PublicKeyLength() const {return GetAbstractGroupParameters().GetEncodedElementSize(true);}
-
- void GeneratePrivateKey(RandomNumberGenerator &rng, byte *privateKey) const
- {
- Integer x(rng, Integer::One(), GetAbstractGroupParameters().GetMaxExponent());
- x.Encode(privateKey, PrivateKeyLength());
- }
-
- void GeneratePublicKey(RandomNumberGenerator &rng, const byte *privateKey, byte *publicKey) const
- {
- const DL_GroupParameters<T> &params = GetAbstractGroupParameters();
- Integer x(privateKey, PrivateKeyLength());
- Element y = params.ExponentiateBase(x);
- params.EncodeElement(true, y, publicKey);
- }
-
- bool Agree(byte *agreedValue, const byte *privateKey, const byte *otherPublicKey, bool validateOtherPublicKey=true) const
- {
- try
- {
- const DL_GroupParameters<T> &params = GetAbstractGroupParameters();
- Integer x(privateKey, PrivateKeyLength());
- Element w = params.DecodeElement(otherPublicKey, validateOtherPublicKey);
-
- Element z = GetKeyAgreementAlgorithm().AgreeWithStaticPrivateKey(
- GetAbstractGroupParameters(), w, validateOtherPublicKey, x);
- params.EncodeElement(false, z, agreedValue);
- }
- catch (DL_BadElement &)
- {
- return false;
- }
- return true;
- }
-
- const Element &GetGenerator() const {return GetAbstractGroupParameters().GetSubgroupGenerator();}
-
-protected:
- virtual const DL_KeyAgreementAlgorithm<Element> & GetKeyAgreementAlgorithm() const =0;
- virtual DL_GroupParameters<Element> & AccessAbstractGroupParameters() =0;
- const DL_GroupParameters<Element> & GetAbstractGroupParameters() const {return const_cast<DL_SimpleKeyAgreementDomainBase<Element> *>(this)->AccessAbstractGroupParameters();}
-};
-
-enum CofactorMultiplicationOption {NO_COFACTOR_MULTIPLICTION, COMPATIBLE_COFACTOR_MULTIPLICTION, INCOMPATIBLE_COFACTOR_MULTIPLICTION};
-typedef EnumToType<CofactorMultiplicationOption, NO_COFACTOR_MULTIPLICTION> NoCofactorMultiplication;
-typedef EnumToType<CofactorMultiplicationOption, COMPATIBLE_COFACTOR_MULTIPLICTION> CompatibleCofactorMultiplication;
-typedef EnumToType<CofactorMultiplicationOption, INCOMPATIBLE_COFACTOR_MULTIPLICTION> IncompatibleCofactorMultiplication;
-
-//! DH key agreement algorithm
-template <class ELEMENT, class COFACTOR_OPTION>
-class DL_KeyAgreementAlgorithm_DH : public DL_KeyAgreementAlgorithm<ELEMENT>
-{
-public:
- typedef ELEMENT Element;
-
- static const char * CRYPTOPP_API StaticAlgorithmName()
- {return COFACTOR_OPTION::ToEnum() == INCOMPATIBLE_COFACTOR_MULTIPLICTION ? "DHC" : "DH";}
-
- Element AgreeWithEphemeralPrivateKey(const DL_GroupParameters<Element> &params, const DL_FixedBasePrecomputation<Element> &publicPrecomputation, const Integer &privateExponent) const
- {
- return publicPrecomputation.Exponentiate(params.GetGroupPrecomputation(),
- COFACTOR_OPTION::ToEnum() == INCOMPATIBLE_COFACTOR_MULTIPLICTION ? privateExponent*params.GetCofactor() : privateExponent);
- }
-
- Element AgreeWithStaticPrivateKey(const DL_GroupParameters<Element> &params, const Element &publicElement, bool validateOtherPublicKey, const Integer &privateExponent) const
- {
- if (COFACTOR_OPTION::ToEnum() == COMPATIBLE_COFACTOR_MULTIPLICTION)
- {
- const Integer &k = params.GetCofactor();
- return params.ExponentiateElement(publicElement,
- ModularArithmetic(params.GetSubgroupOrder()).Divide(privateExponent, k)*k);
- }
- else if (COFACTOR_OPTION::ToEnum() == INCOMPATIBLE_COFACTOR_MULTIPLICTION)
- return params.ExponentiateElement(publicElement, privateExponent*params.GetCofactor());
- else
- {
- assert(COFACTOR_OPTION::ToEnum() == NO_COFACTOR_MULTIPLICTION);
-
- if (!validateOtherPublicKey)
- return params.ExponentiateElement(publicElement, privateExponent);
-
- if (params.FastSubgroupCheckAvailable())
- {
- if (!params.ValidateElement(2, publicElement, NULL))
- throw DL_BadElement();
- return params.ExponentiateElement(publicElement, privateExponent);
- }
- else
- {
- const Integer e[2] = {params.GetSubgroupOrder(), privateExponent};
- Element r[2];
- params.SimultaneousExponentiate(r, publicElement, e, 2);
- if (!params.IsIdentity(r[0]))
- throw DL_BadElement();
- return r[1];
- }
- }
- }
-};
-
-// ********************************************************
-
-//! A template implementing constructors for public key algorithm classes
-template <class BASE>
-class CRYPTOPP_NO_VTABLE PK_FinalTemplate : public BASE
-{
-public:
- PK_FinalTemplate() {}
-
- PK_FinalTemplate(const CryptoMaterial &key)
- {this->AccessKey().AssignFrom(key);}
-
- PK_FinalTemplate(BufferedTransformation &bt)
- {this->AccessKey().BERDecode(bt);}
-
- PK_FinalTemplate(const AsymmetricAlgorithm &algorithm)
- {this->AccessKey().AssignFrom(algorithm.GetMaterial());}
-
- PK_FinalTemplate(const Integer &v1)
- {this->AccessKey().Initialize(v1);}
-
-#if (defined(_MSC_VER) && _MSC_VER < 1300)
-
- template <class T1, class T2>
- PK_FinalTemplate(T1 &v1, T2 &v2)
- {this->AccessKey().Initialize(v1, v2);}
-
- template <class T1, class T2, class T3>
- PK_FinalTemplate(T1 &v1, T2 &v2, T3 &v3)
- {this->AccessKey().Initialize(v1, v2, v3);}
-
- template <class T1, class T2, class T3, class T4>
- PK_FinalTemplate(T1 &v1, T2 &v2, T3 &v3, T4 &v4)
- {this->AccessKey().Initialize(v1, v2, v3, v4);}
-
- template <class T1, class T2, class T3, class T4, class T5>
- PK_FinalTemplate(T1 &v1, T2 &v2, T3 &v3, T4 &v4, T5 &v5)
- {this->AccessKey().Initialize(v1, v2, v3, v4, v5);}
-
- template <class T1, class T2, class T3, class T4, class T5, class T6>
- PK_FinalTemplate(T1 &v1, T2 &v2, T3 &v3, T4 &v4, T5 &v5, T6 &v6)
- {this->AccessKey().Initialize(v1, v2, v3, v4, v5, v6);}
-
- template <class T1, class T2, class T3, class T4, class T5, class T6, class T7>
- PK_FinalTemplate(T1 &v1, T2 &v2, T3 &v3, T4 &v4, T5 &v5, T6 &v6, T7 &v7)
- {this->AccessKey().Initialize(v1, v2, v3, v4, v5, v6, v7);}
-
- template <class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8>
- PK_FinalTemplate(T1 &v1, T2 &v2, T3 &v3, T4 &v4, T5 &v5, T6 &v6, T7 &v7, T8 &v8)
- {this->AccessKey().Initialize(v1, v2, v3, v4, v5, v6, v7, v8);}
-
-#else
-
- template <class T1, class T2>
- PK_FinalTemplate(const T1 &v1, const T2 &v2)
- {this->AccessKey().Initialize(v1, v2);}
-
- template <class T1, class T2, class T3>
- PK_FinalTemplate(const T1 &v1, const T2 &v2, const T3 &v3)
- {this->AccessKey().Initialize(v1, v2, v3);}
-
- template <class T1, class T2, class T3, class T4>
- PK_FinalTemplate(const T1 &v1, const T2 &v2, const T3 &v3, const T4 &v4)
- {this->AccessKey().Initialize(v1, v2, v3, v4);}
-
- template <class T1, class T2, class T3, class T4, class T5>
- PK_FinalTemplate(const T1 &v1, const T2 &v2, const T3 &v3, const T4 &v4, const T5 &v5)
- {this->AccessKey().Initialize(v1, v2, v3, v4, v5);}
-
- template <class T1, class T2, class T3, class T4, class T5, class T6>
- PK_FinalTemplate(const T1 &v1, const T2 &v2, const T3 &v3, const T4 &v4, const T5 &v5, const T6 &v6)
- {this->AccessKey().Initialize(v1, v2, v3, v4, v5, v6);}
-
- template <class T1, class T2, class T3, class T4, class T5, class T6, class T7>
- PK_FinalTemplate(const T1 &v1, const T2 &v2, const T3 &v3, const T4 &v4, const T5 &v5, const T6 &v6, const T7 &v7)
- {this->AccessKey().Initialize(v1, v2, v3, v4, v5, v6, v7);}
-
- template <class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8>
- PK_FinalTemplate(const T1 &v1, const T2 &v2, const T3 &v3, const T4 &v4, const T5 &v5, const T6 &v6, const T7 &v7, const T8 &v8)
- {this->AccessKey().Initialize(v1, v2, v3, v4, v5, v6, v7, v8);}
-
- template <class T1, class T2>
- PK_FinalTemplate(T1 &v1, const T2 &v2)
- {this->AccessKey().Initialize(v1, v2);}
-
- template <class T1, class T2, class T3>
- PK_FinalTemplate(T1 &v1, const T2 &v2, const T3 &v3)
- {this->AccessKey().Initialize(v1, v2, v3);}
-
- template <class T1, class T2, class T3, class T4>
- PK_FinalTemplate(T1 &v1, const T2 &v2, const T3 &v3, const T4 &v4)
- {this->AccessKey().Initialize(v1, v2, v3, v4);}
-
- template <class T1, class T2, class T3, class T4, class T5>
- PK_FinalTemplate(T1 &v1, const T2 &v2, const T3 &v3, const T4 &v4, const T5 &v5)
- {this->AccessKey().Initialize(v1, v2, v3, v4, v5);}
-
- template <class T1, class T2, class T3, class T4, class T5, class T6>
- PK_FinalTemplate(T1 &v1, const T2 &v2, const T3 &v3, const T4 &v4, const T5 &v5, const T6 &v6)
- {this->AccessKey().Initialize(v1, v2, v3, v4, v5, v6);}
-
- template <class T1, class T2, class T3, class T4, class T5, class T6, class T7>
- PK_FinalTemplate(T1 &v1, const T2 &v2, const T3 &v3, const T4 &v4, const T5 &v5, const T6 &v6, const T7 &v7)
- {this->AccessKey().Initialize(v1, v2, v3, v4, v5, v6, v7);}
-
- template <class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8>
- PK_FinalTemplate(T1 &v1, const T2 &v2, const T3 &v3, const T4 &v4, const T5 &v5, const T6 &v6, const T7 &v7, const T8 &v8)
- {this->AccessKey().Initialize(v1, v2, v3, v4, v5, v6, v7, v8);}
-
-#endif
-};
-
-//! Base class for public key encryption standard classes. These classes are used to select from variants of algorithms. Note that not all standards apply to all algorithms.
-struct EncryptionStandard {};
-
-//! Base class for public key signature standard classes. These classes are used to select from variants of algorithms. Note that not all standards apply to all algorithms.
-struct SignatureStandard {};
-
-template <class STANDARD, class KEYS, class ALG_INFO>
-class TF_ES;
-
-//! Trapdoor Function Based Encryption Scheme
-template <class STANDARD, class KEYS, class ALG_INFO = TF_ES<STANDARD, KEYS, int> >
-class TF_ES : public KEYS
-{
- typedef typename STANDARD::EncryptionMessageEncodingMethod MessageEncodingMethod;
-
-public:
- //! see EncryptionStandard for a list of standards
- typedef STANDARD Standard;
- typedef TF_CryptoSchemeOptions<ALG_INFO, KEYS, MessageEncodingMethod> SchemeOptions;
-
- static std::string CRYPTOPP_API StaticAlgorithmName() {return std::string(KEYS::StaticAlgorithmName()) + "/" + MessageEncodingMethod::StaticAlgorithmName();}
-
- //! implements PK_Decryptor interface
- typedef PK_FinalTemplate<TF_DecryptorImpl<SchemeOptions> > Decryptor;
- //! implements PK_Encryptor interface
- typedef PK_FinalTemplate<TF_EncryptorImpl<SchemeOptions> > Encryptor;
-};
-
-template <class STANDARD, class H, class KEYS, class ALG_INFO> // VC60 workaround: doesn't work if KEYS is first parameter
-class TF_SS;
-
-//! Trapdoor Function Based Signature Scheme
-template <class STANDARD, class H, class KEYS, class ALG_INFO = TF_SS<STANDARD, H, KEYS, int> > // VC60 workaround: doesn't work if KEYS is first parameter
-class TF_SS : public KEYS
-{
-public:
- //! see SignatureStandard for a list of standards
- typedef STANDARD Standard;
- typedef typename Standard::SignatureMessageEncodingMethod MessageEncodingMethod;
- typedef TF_SignatureSchemeOptions<ALG_INFO, KEYS, MessageEncodingMethod, H> SchemeOptions;
-
- static std::string CRYPTOPP_API StaticAlgorithmName() {return std::string(KEYS::StaticAlgorithmName()) + "/" + MessageEncodingMethod::StaticAlgorithmName() + "(" + H::StaticAlgorithmName() + ")";}
-
- //! implements PK_Signer interface
- typedef PK_FinalTemplate<TF_SignerImpl<SchemeOptions> > Signer;
- //! implements PK_Verifier interface
- typedef PK_FinalTemplate<TF_VerifierImpl<SchemeOptions> > Verifier;
-};
-
-template <class KEYS, class SA, class MEM, class H, class ALG_INFO>
-class DL_SS;
-
-//! Discrete Log Based Signature Scheme
-template <class KEYS, class SA, class MEM, class H, class ALG_INFO = DL_SS<KEYS, SA, MEM, H, int> >
-class DL_SS : public KEYS
-{
- typedef DL_SignatureSchemeOptions<ALG_INFO, KEYS, SA, MEM, H> SchemeOptions;
-
-public:
- static std::string StaticAlgorithmName() {return SA::StaticAlgorithmName() + std::string("/EMSA1(") + H::StaticAlgorithmName() + ")";}
-
- //! implements PK_Signer interface
- typedef PK_FinalTemplate<DL_SignerImpl<SchemeOptions> > Signer;
- //! implements PK_Verifier interface
- typedef PK_FinalTemplate<DL_VerifierImpl<SchemeOptions> > Verifier;
-};
-
-//! Discrete Log Based Encryption Scheme
-template <class KEYS, class AA, class DA, class EA, class ALG_INFO>
-class DL_ES : public KEYS
-{
- typedef DL_CryptoSchemeOptions<ALG_INFO, KEYS, AA, DA, EA> SchemeOptions;
-
-public:
- //! implements PK_Decryptor interface
- typedef PK_FinalTemplate<DL_DecryptorImpl<SchemeOptions> > Decryptor;
- //! implements PK_Encryptor interface
- typedef PK_FinalTemplate<DL_EncryptorImpl<SchemeOptions> > Encryptor;
-};
-
-NAMESPACE_END
-
-#endif