Discrete Log (DL) public key in GF(p) groups. More...

#include <gfpcrypt.h>

Inheritance diagram for DL_PublicKey_GFP< GP >:

Public Member Functions
void	Initialize (const DL_GroupParameters_IntegerBased &params, const Integer &y)
	Initialize a public key over GF(p)

void	Initialize (const Integer &p, const Integer &g, const Integer &y)
	Initialize a public key over GF(p)

void	Initialize (const Integer &p, const Integer &q, const Integer &g, const Integer &y)
	Initialize a public key over GF(p)

void	BERDecodePublicKey (BufferedTransformation &bt, bool, size_t)
	Decode subjectPublicKey part of subjectPublicKeyInfo.

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

Public Member Functions inherited from DL_PublicKeyImpl< GP >
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.

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
Public Types inherited from DL_PublicKeyImpl< GP >
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

Static Public Member Functions inherited from NameValuePairs
static CRYPTOPP_DLL void	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_PublicKey_GFP< GP >

Discrete Log (DL) public key in GF(p) groups.

Template Parameters

GP	GroupParameters derived class

DSA public key format is defined in 7.3.3 of RFC 2459. The private key format is defined in 12.9 of PKCS #11 v2.10.

Definition at line 577 of file gfpcrypt.h.

Constructor & Destructor Documentation

◆ ~DL_PublicKey_GFP()

template<class GP >

virtual DL_PublicKey_GFP< GP >::~DL_PublicKey_GFP ( )

inlinevirtual

Definition at line 580 of file gfpcrypt.h.

Member Function Documentation

◆ Initialize() [1/3]

template<class GP >

void DL_PublicKey_GFP< GP >::Initialize	(	const DL_GroupParameters_IntegerBased &	params,
		const Integer &	y )

inline

Initialize a public key over GF(p)

Parameters

params	the group parameters
y	the public element

Definition at line 585 of file gfpcrypt.h.

◆ Initialize() [2/3]

template<class GP >

void DL_PublicKey_GFP< GP >::Initialize	(	const Integer &	p,
		const Integer &	g,
		const Integer &	y )

inline

Initialize a public key over GF(p)

Parameters

p	the modulus
g	the generator
y	the public element

Definition at line 592 of file gfpcrypt.h.

◆ Initialize() [3/3]

template<class GP >

void DL_PublicKey_GFP< GP >::Initialize	(	const Integer &	p,
		const Integer &	q,
		const Integer &	g,
		const Integer &	y )

inline

Initialize a public key over GF(p)

Parameters

p	the modulus
q	the subgroup order
g	the generator
y	the public element

Definition at line 600 of file gfpcrypt.h.

◆ BERDecodePublicKey()

template<class GP >

void DL_PublicKey_GFP< GP >::BERDecodePublicKey	(	BufferedTransformation &	bt,
		bool	parametersPresent,
		size_t	size )

inlinevirtual

Decode subjectPublicKey part of subjectPublicKeyInfo.

Parameters

bt	BufferedTransformation object
parametersPresent	flag indicating if algorithm parameters are present
size	number of octets to read for the parameters, in bytes

BERDecodePublicKey() the decodes subjectPublicKey part of subjectPublicKeyInfo, without the BIT STRING header.

When parametersPresent = true then BERDecodePublicKey() calls BERDecodeAlgorithmParameters() to parse algorithm parameters.

See also: BERDecodeAlgorithmParameters

Implements X509PublicKey.

Definition at line 604 of file gfpcrypt.h.

◆ DEREncodePublicKey()

template<class GP >

void DL_PublicKey_GFP< GP >::DEREncodePublicKey ( BufferedTransformation & bt ) const

inlinevirtual

Encode subjectPublicKey part of subjectPublicKeyInfo.

Parameters

bt	BufferedTransformation object

DEREncodePublicKey() encodes the subjectPublicKey part of subjectPublicKeyInfo, without the BIT STRING header.

See also: DEREncodeAlgorithmParameters

Implements X509PublicKey.

Definition at line 606 of file gfpcrypt.h.

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

gfpcrypt.h

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ~DL_PublicKey_GFP()

Member Function Documentation

◆ Initialize() [1/3]

◆ Initialize() [2/3]

◆ Initialize() [3/3]

◆ BERDecodePublicKey()

◆ DEREncodePublicKey()