GParms Class Reference

#include <pk.h>

Inheritance diagram for GParms:

Collaboration diagram for GParms:

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Detailed Description

Data type used to specify arithmetic parameters for various groups, including elliptic curves.

Private Member Functions
	GParms (const num &gg)
	Constructor specifying a group generator.
	GParms (const num &a, const num &b)
	Constructor specifying the coefficients in the equation of an elliptic curve:    in char p:  y 2 = x 3 + a x + b    in char 2:  y 2 + x y = x 3 + a x 2 + b.
bool	isChar2 () const
	Predicate used to determine if underlying field is of characteristic 2.
bool	discriminant () const
	Predicate used to test whether discrimant is nonzero.

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Constructor & Destructor Documentation

GParms	(	const num &	a,
		const num &	b
	)			[explicit, private]

Constructor specifying the coefficients in the equation of an elliptic curve:
   in char p:  y ² = x ³ + a x + b
   in char 2:  y ² + x y = x ³ + a x ² + b.

Parameters:

	a	the first coefficient
	b	the second coefficient

Returns:

0

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Member Function Documentation

bool discriminant

(

)

const [private]

Predicate used to test whether discrimant is nonzero.

Returns:

true, if discriminant is nonzero
false, if discriminant is 0

bool isChar2

(

)

const [inline, private]

Predicate used to determine if underlying field is of characteristic 2.

Returns:

true, if underlying field is of characteristic 2
false, otherwise

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

• pk.h

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