Discrete Log (DL) public key base implementation. More...

#include <pubkey.h>

Inheritance diagram for DL_PublicKeyImpl< GP >:

Public Types
typedef GP::Element	Element

Public Types inherited from DL_PublicKey< GP::Element >
typedef GP::Element	Element

Public Types inherited from DL_KeyImpl< X509PublicKey, GP >
typedef GP	GroupParameters

Public Member Functions
bool	Validate (RandomNumberGenerator &rng, unsigned int level) const
	Check this object for errors.

bool	GetVoidValue (const char name, const std::type_info &valueType, void pValue) const
	Get a named value.

void	AssignFrom (const NameValuePairs &source)
	Assign values to this object.

bool	SupportsPrecomputation () const
	Determines whether the object supports precomputation.

void	Precompute (unsigned int precomputationStorage=16)
	Perform precomputation.

void	LoadPrecomputation (BufferedTransformation &storedPrecomputation)
	Retrieve previously saved precomputation.

void	SavePrecomputation (BufferedTransformation &storedPrecomputation) const
	Save precomputation for later use.

const DL_GroupParameters< Element > &	GetAbstractGroupParameters () const
	Retrieves abstract group parameters.

DL_GroupParameters< Element > &	AccessAbstractGroupParameters ()
	Retrieves abstract group parameters.

const DL_FixedBasePrecomputation< Element > &	GetPublicPrecomputation () const
	Accesses the public precomputation.

DL_FixedBasePrecomputation< Element > &	AccessPublicPrecomputation ()
	Accesses the public precomputation.

bool	operator== (const DL_PublicKeyImpl< GP > &rhs) const

Public Member Functions inherited from DL_PublicKey< GP::Element >
bool	GetVoidValue (const char name, const std::type_info &valueType, void pValue) const
	Get a named value.

void	AssignFrom (const NameValuePairs &source)
	Initialize or reinitialize this key.

virtual const Element &	GetPublicElement () const
	Retrieves the public element.

virtual void	SetPublicElement (const Element &y)
	Sets the public element.

virtual Element	ExponentiatePublicElement (const Integer &exponent) const
	Exponentiates this element.

virtual Element	CascadeExponentiateBaseAndPublicElement (const Integer &baseExp, const Integer &publicExp) const
	Exponentiates an element.

Public Member Functions inherited from DL_KeyImpl< X509PublicKey, GP >
OID	GetAlgorithmID () const

bool	BERDecodeAlgorithmParameters (BufferedTransformation &bt)

bool	DEREncodeAlgorithmParameters (BufferedTransformation &bt) const

const GP &	GetGroupParameters () const

GP &	AccessGroupParameters ()

Public Member Functions inherited from X509PublicKey
void	BERDecode (BufferedTransformation &bt)
	Decode this object from a BufferedTransformation.

void	DEREncode (BufferedTransformation &bt) const
	Encode this object into a BufferedTransformation.

virtual void	BERDecodePublicKey (BufferedTransformation &bt, bool parametersPresent, size_t size)=0
	Decode subjectPublicKey part of subjectPublicKeyInfo.

virtual void	DEREncodePublicKey (BufferedTransformation &bt) const =0
	Encode subjectPublicKey part of subjectPublicKeyInfo.

Public Member Functions inherited from ASN1CryptoMaterial< PublicKey >
void	Save (BufferedTransformation &bt) const
	DER encode ASN.1 object.

void	Load (BufferedTransformation &bt)
	BER decode ASN.1 object.

Public Member Functions inherited from ASN1Object
virtual void	BEREncode (BufferedTransformation &bt) const
	Encode this object into a BufferedTransformation.

Public Member Functions inherited from CryptoMaterial
virtual void	ThrowIfInvalid (RandomNumberGenerator &rng, unsigned int level) const
	Check this object for errors.

void	DoQuickSanityCheck () const
	Perform a quick sanity check.

Public Member Functions inherited from NameValuePairs
template<class T >
bool	GetThisObject (T &object) const
	Get a copy of this object or subobject.

template<class T >
bool	GetThisPointer (T *&ptr) const
	Get a pointer to this object.

template<class T >
bool	GetValue (const char *name, T &value) const
	Get a named value.

template<class T >
T	GetValueWithDefault (const char *name, T defaultValue) const
	Get a named value.

CRYPTOPP_DLL std::string	GetValueNames () const
	Get a list of value names that can be retrieved.

CRYPTOPP_DLL bool	GetIntValue (const char *name, int &value) const
	Get a named value with type int.

CRYPTOPP_DLL int	GetIntValueWithDefault (const char *name, int defaultValue) const
	Get a named value with type int, with default.

CRYPTOPP_DLL bool	GetWord64Value (const char *name, word64 &value) const
	Get a named value with type word64.

CRYPTOPP_DLL word64	GetWord64ValueWithDefault (const char *name, word64 defaultValue) const
	Get a named value with type word64, with default.

template<class T >
void	GetRequiredParameter (const char className, const char name, T &value) const
	Retrieves a required name/value pair.

CRYPTOPP_DLL void	GetRequiredIntParameter (const char className, const char name, int &value) const
	Retrieves a required name/value pair.

Additional Inherited Members
Static Public Member Functions inherited from NameValuePairs
static CRYPTOPP_DLL void CRYPTOPP_API	ThrowIfTypeMismatch (const char *name, const std::type_info &stored, const std::type_info &retrieving)
	Ensures an expected name and type is present.

Detailed Description

template<class GP>
class DL_PublicKeyImpl< GP >

Discrete Log (DL) public key base implementation.

Template Parameters

GP	GroupParameters class

Definition at line 1335 of file pubkey.h.

Member Typedef Documentation

◆ Element

template<class GP >

typedef GP::Element DL_PublicKeyImpl< GP >::Element

Definition at line 1338 of file pubkey.h.

Constructor & Destructor Documentation

◆ ~DL_PublicKeyImpl()

template<class GP >

DL_PublicKeyImpl< GP >::~DL_PublicKeyImpl ( )

virtual

Definition at line 1400 of file pubkey.h.

Member Function Documentation

◆ AccessAbstractGroupParameters()

template<class GP >

DL_GroupParameters< Element > & DL_PublicKeyImpl< GP >::AccessAbstractGroupParameters ( )

inlinevirtual

Retrieves abstract group parameters.

Returns: a non-const reference to the group parameters

Implements DL_Key< T >.

Definition at line 1384 of file pubkey.h.

◆ AccessPublicPrecomputation()

template<class GP >

DL_FixedBasePrecomputation< Element > & DL_PublicKeyImpl< GP >::AccessPublicPrecomputation ( )

inlinevirtual

Accesses the public precomputation.

GetPublicPrecomputation returns a const reference, while AccessPublicPrecomputation returns a non-const reference. Must be overridden in derived classes.

Implements DL_PublicKey< GP::Element >.

Definition at line 1388 of file pubkey.h.

◆ AssignFrom()

template<class GP >

void DL_PublicKeyImpl< GP >::AssignFrom ( const NameValuePairs & source )

inlinevirtual

Assign values to this object.

This function can be used to create a public key from a private key.

Implements CryptoMaterial.

Definition at line 1357 of file pubkey.h.

◆ GetAbstractGroupParameters()

template<class GP >

const DL_GroupParameters< Element > & DL_PublicKeyImpl< GP >::GetAbstractGroupParameters ( ) const

inlinevirtual

Retrieves abstract group parameters.

Returns: a const reference to the group parameters

Implements DL_Key< T >.

Definition at line 1383 of file pubkey.h.

◆ GetPublicPrecomputation()

template<class GP >

const DL_FixedBasePrecomputation< Element > & DL_PublicKeyImpl< GP >::GetPublicPrecomputation ( ) const

inlinevirtual

Accesses the public precomputation.

GetPublicPrecomputation returns a const reference, while AccessPublicPrecomputation returns a non-const reference. Must be overridden in derived classes.

Implements DL_PublicKey< GP::Element >.

Definition at line 1387 of file pubkey.h.

◆ GetVoidValue()

template<class GP >

bool DL_PublicKeyImpl< GP >::GetVoidValue	(	const char *	name,
		const std::type_info &	valueType,
		void *	pValue
	)		const

inlinevirtual

Get a named value.

Parameters

name	the name of the object or value to retrieve
valueType	reference to a variable that receives the value
pValue	void pointer to a variable that receives the value

Returns: true if the value was retrieved, false otherwise

GetVoidValue() retrieves the value of name if it exists.

Note: GetVoidValue() is an internal function and should be implemented by derived classes. Users should use one of the other functions instead.

See also: GetValue(), GetValueWithDefault(), GetIntValue(), GetIntValueWithDefault(), GetRequiredParameter() and GetRequiredIntParameter()

Implements NameValuePairs.

Definition at line 1352 of file pubkey.h.

◆ LoadPrecomputation()

template<class GP >

void DL_PublicKeyImpl< GP >::LoadPrecomputation ( BufferedTransformation & storedPrecomputation )

inlinevirtual

Retrieve previously saved precomputation.

Parameters

storedPrecomputation BufferedTransformation with the saved precomputation

Exceptions

NotImplemented

See also: SupportsPrecomputation(), Precompute()

Reimplemented from CryptoMaterial.

Definition at line 1370 of file pubkey.h.

◆ operator==()

template<class GP >

bool DL_PublicKeyImpl< GP >::operator== ( const DL_PublicKeyImpl< GP > & rhs ) const

inline

Definition at line 1391 of file pubkey.h.

◆ Precompute()

template<class GP >

void DL_PublicKeyImpl< GP >::Precompute ( unsigned int precomputationStorage = 16 )

inlinevirtual

Perform precomputation.

Parameters

precomputationStorage the suggested number of objects for the precompute table

Exceptions

NotImplemented

The exact semantics of Precompute() varies, but it typically means calculate a table of n objects that can be used later to speed up computation.

If a derived class does not override Precompute(), then the base class throws NotImplemented.

See also: SupportsPrecomputation(), LoadPrecomputation(), SavePrecomputation()

Reimplemented from CryptoMaterial.

Definition at line 1364 of file pubkey.h.

◆ SavePrecomputation()

template<class GP >

void DL_PublicKeyImpl< GP >::SavePrecomputation ( BufferedTransformation & storedPrecomputation ) const

inlinevirtual

Save precomputation for later use.

Parameters

storedPrecomputation BufferedTransformation to write the precomputation

Exceptions

NotImplemented

See also: SupportsPrecomputation(), Precompute()

Reimplemented from CryptoMaterial.

Definition at line 1376 of file pubkey.h.

◆ SupportsPrecomputation()

template<class GP >

bool DL_PublicKeyImpl< GP >::SupportsPrecomputation ( ) const

inlinevirtual

Determines whether the object supports precomputation.

Returns: true if the object supports precomputation, false otherwise

See also: Precompute()

Reimplemented from CryptoMaterial.

Definition at line 1362 of file pubkey.h.

◆ Validate()

template<class GP >

bool DL_PublicKeyImpl< GP >::Validate	(	RandomNumberGenerator &	rng,
		unsigned int	level
	)		const

inlinevirtual

Check this object for errors.

Parameters

rng	a RandomNumberGenerator for objects which use randomized testing
level	the level of thoroughness

Returns: true if the tests succeed, false otherwise

There are four levels of thoroughness:

0 - using this object won't cause a crash or exception
1 - this object will probably function, and encrypt, sign, other operations correctly
2 - ensure this object will function correctly, and perform reasonable security checks
3 - perform reasonable security checks, and do checks that may take a long time

Level 0 does not require a RandomNumberGenerator. A NullRNG() can be used for level 0. Level 1 may not check for weak keys and such. Levels 2 and 3 are recommended.

See also: ThrowIfInvalid()

Implements CryptoMaterial.

Definition at line 1343 of file pubkey.h.

The documentation for this class was generated from the following file:

G:/work/subversion/scol-technologies/trunk/scol/plugins/security/cryptopp/pubkey.h

Public Types

Public Member Functions

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Element

Constructor & Destructor Documentation

◆ ~DL_PublicKeyImpl()

Member Function Documentation

◆ AccessAbstractGroupParameters()

◆ AccessPublicPrecomputation()

◆ AssignFrom()

◆ GetAbstractGroupParameters()

◆ GetPublicPrecomputation()

◆ GetVoidValue()

◆ LoadPrecomputation()

◆ operator==()

◆ Precompute()

◆ SavePrecomputation()

◆ SupportsPrecomputation()

◆ Validate()