#include <luc.h>

Inheritance diagram for InvertibleLUCFunction:

Public Member Functions
void	Initialize (RandomNumberGenerator &rng, unsigned int modulusBits, const Integer &eStart=17)
void	Initialize (const Integer &n, const Integer &e, const Integer &p, const Integer &q, const Integer &u)
void	BERDecode (BufferedTransformation &bt)
void	DEREncode (BufferedTransformation &bt) const
Integer	CalculateInverse (RandomNumberGenerator &rng, const Integer &x) const
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
	to be implemented by derived classes, users should use one of the above functions instead
void	AssignFrom (const NameValuePairs &source)
	assign values from source to this object
void	GenerateRandom (RandomNumberGenerator &rng, const NameValuePairs &alg)
const Integer &	GetPrime1 () const
const Integer &	GetPrime2 () const
const Integer &	GetMultiplicativeInverseOfPrime2ModPrime1 () const
void	SetPrime1 (const Integer &p)
void	SetPrime2 (const Integer &q)
void	SetMultiplicativeInverseOfPrime2ModPrime1 (const Integer &u)
void	Initialize (const Integer &n, const Integer &e)
void	BERDecode (BufferedTransformation &bt)
void	DEREncode (BufferedTransformation &bt) const
Integer	ApplyFunction (const Integer &x) const
virtual Integer	ApplyFunction (const Integer &x) const =0
Integer	PreimageBound () const
virtual Integer	PreimageBound () const =0
Integer	ImageBound () const
virtual Integer	ImageBound () const =0
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
	to be implemented by derived classes, users should use one of the above functions instead
void	AssignFrom (const NameValuePairs &source)
	assign values from source to this object
const Integer &	GetModulus () const
const Integer &	GetPublicExponent () const
void	SetModulus (const Integer &n)
void	SetPublicExponent (const Integer &e)
Integer	ApplyRandomizedFunction (RandomNumberGenerator &rng, const Integer &x) const
bool	IsRandomized () const
virtual Integer	MaxPreimage () const
virtual Integer	MaxImage () const
virtual void	ThrowIfInvalid (RandomNumberGenerator &rng, unsigned int level) const
	throws InvalidMaterial if this object fails Validate() test
virtual void	Save (BufferedTransformation &bt) const
	save key into a BufferedTransformation
virtual void	Load (BufferedTransformation &bt)
	load key from a BufferedTransformation
virtual bool	SupportsPrecomputation () const
virtual void	Precompute (unsigned int n)
	do precomputation
virtual void	LoadPrecomputation (BufferedTransformation &storedPrecomputation)
	retrieve previously saved precomputation
virtual void	SavePrecomputation (BufferedTransformation &storedPrecomputation) const
	save precomputation for later use
void	DoQuickSanityCheck () const
template<class T >
bool	GetThisObject (T &object) const
	get a copy of this object or a subobject of it
template<class T >
bool	GetThisPointer (T *&p) const
	get a pointer to this object, as a pointer to T
template<class T >
bool	GetValue (const char *name, T &value) const
	get a named value, returns true if the name exists
template<class T >
T	GetValueWithDefault (const char *name, T defaultValue) const
	get a named value, returns the default if the name doesn't exist
std::string	GetValueNames () const
	get a list of value names that can be retrieved
bool	GetIntValue (const char *name, int &value) const
	get a named value with type int
int	GetIntValueWithDefault (const char *name, int defaultValue) const
	get a named value with type int, with default
template<class T >
void	GetRequiredParameter (const char className, const char name, T &value) const
void	GetRequiredIntParameter (const char className, const char name, int &value) const
Integer	CalculateRandomizedInverse (RandomNumberGenerator &rng, const Integer &x) const
bool	IsRandomized () const
virtual Integer	CalculateInverse (RandomNumberGenerator &rng, const Integer &x) const =0
void	GenerateRandomWithKeySize (RandomNumberGenerator &rng, unsigned int keySize)
	calls the above function with a NameValuePairs object that just specifies "KeySize"
Static Public Member Functions
static void	ThrowIfTypeMismatch (const char *name, const std::type_info &stored, const std::type_info &retrieving)
	used by derived classes to check for type mismatch
Protected Attributes
Integer	m_p
Integer	m_q
Integer	m_u
Integer	m_n
Integer	m_e

Detailed Description

_

Definition at line 53 of file luc.h.

Member Function Documentation

bool InvertibleLUCFunction::Validate	(	RandomNumberGenerator &	rng,
		unsigned int	level
	)			const `[virtual]`

check this object for errors

Parameters:

level

denotes the level of thoroughness: 0 - using this object won't cause a crash or exception (rng is ignored) 1 - this object will probably function (encrypt, sign, etc.) correctly (but may not check for weak keys and such) 2 - make sure this object will function correctly, and do reasonable security checks 3 - do checks that may take a long time

Returns:: true if the tests pass

Implements CryptoMaterial.

Definition at line 172 of file luc.cpp.

References Integer::One().

void InvertibleLUCFunction::AssignFrom ( const NameValuePairs & source ) [virtual]

assign values from source to this object

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

Implements CryptoMaterial.

Definition at line 201 of file luc.cpp.

void InvertibleLUCFunction::GenerateRandom	(	RandomNumberGenerator &	rng,
		const NameValuePairs &	alg
	)			`[virtual]`

parameters: (ModulusSize, PublicExponent (default 17))

Reimplemented from GeneratableCryptoMaterial.

Definition at line 107 of file luc.cpp.

References NameValuePairs::GetIntValue(), NameValuePairs::GetValueWithDefault(), and Integer::InverseMod().

bool LUCFunction::Validate	(	RandomNumberGenerator &	rng,
		unsigned int	level
	)			const `[virtual, inherited]`

check this object for errors

Parameters:

level

denotes the level of thoroughness: 0 - using this object won't cause a crash or exception (rng is ignored) 1 - this object will probably function (encrypt, sign, etc.) correctly (but may not check for weak keys and such) 2 - make sure this object will function correctly, and do reasonable security checks 3 - do checks that may take a long time

Returns:: true if the tests pass

Implements CryptoMaterial.

Definition at line 69 of file luc.cpp.

References Integer::One().

void LUCFunction::AssignFrom ( const NameValuePairs & source ) [virtual, inherited]

assign values from source to this object

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

Implements CryptoMaterial.

Definition at line 85 of file luc.cpp.

virtual void CryptoMaterial::Load ( BufferedTransformation & bt ) [inline, virtual, inherited]

load key from a BufferedTransformation

Exceptions:

KeyingErr

if decode fails

Note:: Generally does not check that the key is valid. Call ValidateKey() or ThrowIfInvalidKey() to check that.

Reimplemented in InvertibleRSAFunction.

Definition at line 1072 of file cryptlib.h.

virtual bool CryptoMaterial::SupportsPrecomputation ( ) const [inline, virtual, inherited]

Returns:: whether this object supports precomputation

Reimplemented in DL_GroupParameters< T >, DL_PrivateKeyImpl< GP >, DL_PublicKeyImpl< GP >, DL_GroupParameters< Integer >, DL_GroupParameters< typenameEcPrecomputation< EC >::Element >, DL_PrivateKeyImpl< DL_GroupParameters_EC< EC > >, and DL_PublicKeyImpl< DL_GroupParameters_EC< EC > >.

Definition at line 1076 of file cryptlib.h.

virtual void CryptoMaterial::Precompute ( unsigned int n ) [inline, virtual, inherited]

do precomputation

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

Reimplemented in DL_GroupParameters< T >, DL_PrivateKeyImpl< GP >, DL_PublicKeyImpl< GP >, DL_GroupParameters< Integer >, DL_GroupParameters< typenameEcPrecomputation< EC >::Element >, DL_PrivateKeyImpl< DL_GroupParameters_EC< EC > >, and DL_PublicKeyImpl< DL_GroupParameters_EC< EC > >.

Definition at line 1081 of file cryptlib.h.

bool NameValuePairs::GetIntValue	(	const char *	name,
		int &	value
	)			const `[inline, inherited]`

get a named value with type int

used to ensure we don't accidentally try to get an unsigned int or some other type when we mean int (which is the most common case)

Definition at line 282 of file cryptlib.h.

Referenced by InvertibleRWFunction::GenerateRandom(), InvertibleRSAFunction::GenerateRandom(), InvertibleRabinFunction::GenerateRandom(), GenerateRandom(), DL_GroupParameters_IntegerBased::GenerateRandom(), DL_GroupParameters_DSA::GenerateRandom(), and InvertibleESIGNFunction::GenerateRandom().

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

InvertibleLUCFunction Class Reference

Public Member Functions

Static Public Member Functions

Protected Attributes

Detailed Description

Member Function Documentation