Abstract class for encoding and decoding ellicptic curve points. More...

#include <ecpoint.h>

Public Member Functions
virtual	~EncodedPoint ()

virtual bool	DecodePoint (Point &P, BufferedTransformation &bt, size_t len) const =0
	Decodes an elliptic curve point. More...

virtual bool	DecodePoint (Point &P, const byte *encodedPoint, size_t len) const =0
	Decodes an elliptic curve point. More...

virtual bool	VerifyPoint (const Point &P) const =0
	Verifies points on elliptic curve. More...

virtual unsigned int	EncodedPointSize (bool compressed=false) const =0
	Determines encoded point size. More...

virtual void	EncodePoint (byte *encodedPoint, const Point &P, bool compressed) const =0
	Encodes an elliptic curve point. More...

virtual void	EncodePoint (BufferedTransformation &bt, const Point &P, bool compressed) const =0
	Encodes an elliptic curve point. More...

virtual Point	BERDecodePoint (BufferedTransformation &bt) const =0
	BER Decodes an elliptic curve point. More...

virtual void	DEREncodePoint (BufferedTransformation &bt, const Point &P, bool compressed) const =0
	DER Encodes an elliptic curve point. More...

Detailed Description

template<class Point>
class EncodedPoint< Point >

Abstract class for encoding and decoding ellicptic curve points.

Template Parameters

Point ellicptic curve point

EncodedPoint is an interface for encoding and decoding elliptic curve points. The template parameter Point should be a class like ECP or EC2N.

Since: Crypto++ 5.7

Definition at line 93 of file ecpoint.h.

Constructor & Destructor Documentation

template<class Point>

virtual EncodedPoint< Point >::~EncodedPoint ( )

inlinevirtual

Definition at line 96 of file ecpoint.h.

Member Function Documentation

template<class Point>

virtual Point EncodedPoint< Point >::BERDecodePoint ( BufferedTransformation & bt ) const

pure virtual

BER Decodes an elliptic curve point.

Parameters

bt	source BufferedTransformation

Returns: the decoded elliptic curve point

Implemented in ECP, and EC2N.

template<class Point>

virtual bool EncodedPoint< Point >::DecodePoint	(	Point &	P,
		BufferedTransformation &	bt,
		size_t	len
	)		const

pure virtual

Decodes an elliptic curve point.

Parameters

P	point which is decoded
bt	source BufferedTransformation
len	number of bytes to read from the BufferedTransformation

Returns: true if a point was decoded, false otherwise

Implemented in ECP, and EC2N.

template<class Point>

virtual bool EncodedPoint< Point >::DecodePoint	(	Point &	P,
		const byte *	encodedPoint,
		size_t	len
	)		const

pure virtual

Decodes an elliptic curve point.

Parameters

P	point which is decoded
encodedPoint	byte array with the encoded point
len	the size of the array

Returns: true if a point was decoded, false otherwise

Implemented in ECP, and EC2N.

template<class Point>

virtual void EncodedPoint< Point >::DEREncodePoint	(	BufferedTransformation &	bt,
		const Point &	P,
		bool	compressed
	)		const

pure virtual

DER Encodes an elliptic curve point.

Parameters

bt	target BufferedTransformation
P	point which is encoded
compressed	flag indicating if the point is compressed

Implemented in ECP, and EC2N.

template<class Point>

virtual unsigned int EncodedPoint< Point >::EncodedPointSize ( bool compressed = false ) const

pure virtual

Determines encoded point size.

Parameters

compressed flag indicating if the point is compressed

Returns: the minimum number of bytes required to encode the point

Implemented in ECP, and EC2N.

template<class Point>

virtual void EncodedPoint< Point >::EncodePoint	(	byte *	encodedPoint,
		const Point &	P,
		bool	compressed
	)		const

pure virtual

Encodes an elliptic curve point.

Parameters

P	point which is decoded
encodedPoint	byte array for the encoded point
compressed	flag indicating if the point is compressed

encodedPoint must be at least EncodedPointSize() in length

Implemented in ECP, and EC2N.

template<class Point>

virtual void EncodedPoint< Point >::EncodePoint	(	BufferedTransformation &	bt,
		const Point &	P,
		bool	compressed
	)		const

pure virtual

Encodes an elliptic curve point.

Parameters

bt	target BufferedTransformation
P	point which is encoded
compressed	flag indicating if the point is compressed

Implemented in ECP, and EC2N.

template<class Point>

virtual bool EncodedPoint< Point >::VerifyPoint ( const Point & P ) const

pure virtual

Verifies points on elliptic curve.

Parameters

P	point to verify

Returns: true if the point is valid, false otherwise

Implemented in ECP, and EC2N.

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

src/cryptopp/ecpoint.h

Public Member Functions

Detailed Description

template<class Point> class EncodedPoint< Point >

Constructor & Destructor Documentation

Member Function Documentation

template<class Point>
class EncodedPoint< Point >