Elliptic Curve Discrete Log (DL) public key. More...

#include <eccrypto.h>

Inheritance diagram for DL_PublicKey_EC< EC >:

Public Types
typedef EC::Point	Element

Public Types inherited from DL_PublicKeyImpl< DL_GroupParameters_EC< EC > >
typedef GP::Element	Element

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

Public Types inherited from DL_KeyImpl< X509PublicKey, DL_GroupParameters_EC< EC > >
typedef DL_GroupParameters_EC< EC >	GroupParameters

Public Member Functions
void	Initialize (const DL_GroupParameters_EC< EC > &params, const Element &Q)
	Initialize an EC Public Key using {GP,Q}. More...

void	Initialize (const EC &ec, const Element &G, const Integer &n, const Element &Q)
	Initialize an EC Public Key using {EC,G,n,Q}. More...

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

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

Public Member Functions inherited from DL_PublicKeyImpl< DL_GroupParameters_EC< EC > >
bool	Validate (RandomNumberGenerator &rng, unsigned int level) const
	Check this object for errors. More...

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

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

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

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

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

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

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

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

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

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

bool	operator== (const DL_PublicKeyImpl< DL_GroupParameters_EC< EC > > &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. More...

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

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

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

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

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

virtual const DL_FixedBasePrecomputation< GP::Element > &	GetPublicPrecomputation () const=0
	Accesses the public precomputation. More...

virtual DL_FixedBasePrecomputation< GP::Element > &	AccessPublicPrecomputation ()=0
	Accesses the public precomputation. More...

virtual const DL_GroupParameters< GP::Element > &	GetAbstractGroupParameters () const=0
	Retrieves abstract group parameters. More...

virtual DL_GroupParameters< GP::Element > &	AccessAbstractGroupParameters ()=0
	Retrieves abstract group parameters. More...

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

bool	BERDecodeAlgorithmParameters (BufferedTransformation &bt)

bool	DEREncodeAlgorithmParameters (BufferedTransformation &bt) const

const DL_GroupParameters_EC< EC > &	GetGroupParameters () const

DL_GroupParameters_EC< EC > &	AccessGroupParameters ()

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

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

virtual OID	GetAlgorithmID () const =0
	Retrieves the OID of the algorithm. More...

virtual bool	BERDecodeAlgorithmParameters (BufferedTransformation &bt)
	Decode algorithm parameters. More...

virtual bool	DEREncodeAlgorithmParameters (BufferedTransformation &bt) const
	Encode algorithm parameters. More...

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

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

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

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

Public Member Functions inherited from ASN1Object
virtual void	BERDecode (BufferedTransformation &bt)=0
	Decode this object from a BufferedTransformation. More...

virtual void	DEREncode (BufferedTransformation &bt) const =0
	Encode this object into a BufferedTransformation. More...

virtual void	BEREncode (BufferedTransformation &bt) const
	Encode this object into a BufferedTransformation. More...

Public Member Functions inherited from CryptoMaterial
virtual void	AssignFrom (const NameValuePairs &source)=0
	Assign values to this object. More...

virtual bool	Validate (RandomNumberGenerator &rng, unsigned int level) const =0
	Check this object for errors. More...

virtual void	ThrowIfInvalid (RandomNumberGenerator &rng, unsigned int level) const
	Check this object for errors. More...

virtual void	Save (BufferedTransformation &bt) const
	Saves a key to a BufferedTransformation. More...

virtual void	Load (BufferedTransformation &bt)
	Loads a key from a BufferedTransformation. More...

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

virtual void	Precompute (unsigned int precomputationStorage)
	Perform precomputation. More...

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

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

void	DoQuickSanityCheck () const
	Perform a quick sanity check. More...

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

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

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

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

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

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

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

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

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

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

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

virtual CRYPTOPP_DLL bool	GetVoidValue (const char name, const std::type_info &valueType, void pValue) const =0
	Get a named value. More...

Additional Inherited Members
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. More...

Detailed Description

template<class EC>
class DL_PublicKey_EC< EC >

Elliptic Curve Discrete Log (DL) public key.

Template Parameters

EC	elliptic curve field

Definition at line 178 of file eccrypto.h.

Member Typedef Documentation

◆ Element

template<class EC >

typedef EC::Point DL_PublicKey_EC< EC >::Element

Definition at line 181 of file eccrypto.h.

Constructor & Destructor Documentation

◆ ~DL_PublicKey_EC()

template<class EC >

virtual DL_PublicKey_EC< EC >::~DL_PublicKey_EC ( )

inlinevirtual

Definition at line 183 of file eccrypto.h.

Member Function Documentation

◆ Initialize() [1/2]

template<class EC >

void DL_PublicKey_EC< EC >::Initialize	(	const DL_GroupParameters_EC< EC > &	params,
		const Element &	Q
	)

inline

Initialize an EC Public Key using {GP,Q}.

Parameters

params	group parameters
Q	the public point

This Initialize() function overload initializes a public key from existing parameters.

Definition at line 189 of file eccrypto.h.

◆ Initialize() [2/2]

template<class EC >

void DL_PublicKey_EC< EC >::Initialize	(	const EC &	ec,
		const Element &	G,
		const Integer &	n,
		const Element &	Q
	)

inline

Initialize an EC Public Key using {EC,G,n,Q}.

Parameters

ec	the elliptic curve
G	the base point
n	the order of the base point
Q	the public point

This Initialize() function overload initializes a public key from existing parameters.

Definition at line 198 of file eccrypto.h.

◆ BERDecodePublicKey()

template<class EC >

void DL_PublicKey_EC< EC >::BERDecodePublicKey	(	BufferedTransformation &	bt,
		bool	parametersPresent,
		size_t	size
	)

virtual

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.

◆ DEREncodePublicKey()

template<class EC >

void DL_PublicKey_EC< EC >::DEREncodePublicKey ( BufferedTransformation & bt ) const

virtual

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.

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

eccrypto.h

Public Types

Public Member Functions

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Element

Constructor & Destructor Documentation

◆ ~DL_PublicKey_EC()

Member Function Documentation

◆ Initialize() [1/2]

◆ Initialize() [2/2]

◆ BERDecodePublicKey()

◆ DEREncodePublicKey()