scc::crypto::EccGfpPoint Class Reference

Public Member Functions
	EccGfpPoint ()
	Construct an invalid point.
	EccGfpPoint (const EccGfp &curve)
	Construct a point on the elliptic curve. More...
	EccGfpPoint (const EccGfp::Type &curve_type)
void	reset ()
	Reset the point to invalid.
void	reset (const EccGfp &)
	Reset the point to fall on the elliptic curve. More...
void	set (const scc::crypto::Bignum &, const scc::crypto::Bignum &)
	Set point. More...
void	set (const scc::crypto::Bignum &x, const scc::crypto::Bignum &y, EccGfp &curve)
	Set point to a new curve. More...
void	set (const void *, int)
	Set the point from a data string. More...
void	set (const std::vector< char > &v)
void	set (const void *loc, int len, EccGfp &curve)
	Set the point from a data string on a new curve. More...
void	set (const std::vector< char > &v, EccGfp &curve)
void	set ()
	Set point to infinity. More...
void	get (scc::crypto::Bignum &, scc::crypto::Bignum &) const
	Get the coordinates. More...
void	get (std::vector< char > &) const
	Get the coordinates to a data string. More...
bool	infinite (const EccGfp &curve) const
bool	infinite () const
bool	valid (const EccGfp &curve) const
bool	valid () const
bool	equal (const EccGfpPoint &) const
	Test for equality with a second point.
bool	operator== (const EccGfpPoint &b) const
bool	operator!= (const EccGfpPoint &b) const

Static Public Member Functions
static bool	infinite (const EccGfpPoint &, const EccGfp &)
	Test the point for infinity on a curve. More...
static bool	infinite (const EccGfpPoint &)
	Test the point for infinity. More...
static bool	valid (const EccGfpPoint &, const EccGfp &)
	Verify the point on a curve. More...
static bool	valid (const EccGfpPoint &)
	Verify the point. More...

Friends
class	EccGfp
class	EcdsaSignature

Detailed Description

Definition at line 196 of file ecc.h.

Constructor & Destructor Documentation

EccGfpPoint()

scc::crypto::EccGfpPoint::EccGfpPoint ( const EccGfp &  curve )

inline

Construct a point on the elliptic curve.

Point is set to infinity.

Definition at line 207 of file ecc.h.

Member Function Documentation

get() [1/2]

void scc::crypto::EccGfpPoint::get	(	scc::crypto::Bignum &	,
		scc::crypto::Bignum &
	)		const

Get the coordinates.

Parameters

x	X coordinate
y	Y coordinate

Throws an exception if the point is invalid.

get() [2/2]

void scc::crypto::EccGfpPoint::get

(

std::vector< char > &

)

const

Get the coordinates to a data string.

String will be reset to the coordinate data length.

Throws an exception if the point is invalid.

infinite() [1/2]

static bool scc::crypto::EccGfpPoint::infinite ( const EccGfpPoint &  )

static

Test the point for infinity.

Failure means the point is invalid, or is not the infinity point.

infinite() [2/2]

static bool scc::crypto::EccGfpPoint::infinite ( const EccGfpPoint &  , const EccGfp &    )

static

Test the point for infinity on a curve.

Failure means the point is invalid, or is not the infinity point.

reset()

void scc::crypto::EccGfpPoint::reset

(

const EccGfp &

)

Reset the point to fall on the elliptic curve.

Point will be initially set to infinity.

set() [1/5]

void scc::crypto::EccGfpPoint::set

(

)

Set point to infinity.

Throws exception if point is invalid.

set() [2/5]

void scc::crypto::EccGfpPoint::set	(	const scc::crypto::Bignum &	,
		const scc::crypto::Bignum &
	)

Set point.

Parameters

x	X coordinate
y	Y coordinate

Throws an exception if the point is invalid or coordinates are not on the curve.

set() [3/5]

void scc::crypto::EccGfpPoint::set ( const scc::crypto::Bignum &  x, const scc::crypto::Bignum &  y, EccGfp &  curve  )

inline

Set point to a new curve.

Throws an exception if the coordinates are not on the curve.

Definition at line 239 of file ecc.h.

set() [4/5]

void scc::crypto::EccGfpPoint::set	(	const void *	,
		int
	)

Set the point from a data string.

Throws an exception if the point or input data is invalid.

set() [5/5]

void scc::crypto::EccGfpPoint::set ( const void *  loc, int  len, EccGfp &  curve  )

inline

Set the point from a data string on a new curve.

Throws an exception if the point or input data is invalid.

Definition at line 258 of file ecc.h.

valid() [1/2]

static bool scc::crypto::EccGfpPoint::valid ( const EccGfpPoint &  )

static

Verify the point.

Failure means the point is invalid, infinite or does not fall on the curve.

valid() [2/2]

static bool scc::crypto::EccGfpPoint::valid ( const EccGfpPoint &  , const EccGfp &    )

static

Verify the point on a curve.

Failure means the point is invalid, infinite or does not fall on the curve.

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

• crypto/pub/crypto/ecc.h