elGamal::CipherText Class Reference

Implements an El-Gamal ciphertext, i.e. a pair of group elements. More...

#include <ciphertext.hpp>

Collaboration diagram for elGamal::CipherText:

Public Member Functions
	CipherText (verifierUtils::ByteTree *bt, CipherGroup c)
	Reads the two children of bt to retrieve the bytetree representations of u and v as elements of c.
	CipherText (arithm::Elmt left, arithm::Elmt right)
	Assigns directly u to left and v to right.
verifierUtils::ByteTree *	toByteTree ()
	Turns this ciphertext into a node containing the bytetree representations of u and v.
arithm::Elmt	getU ()
	Returns the u attribute, i.e. the left side member.
arithm::Elmt	getV ()
	Returns the v attribute, i.e. the right side member.

Private Attributes
arithm::Elmt	u
	The left hand side of the pair.
arithm::Elmt	v
	The right hand side of the pair.

Detailed Description

Implements an El-Gamal ciphertext, i.e. a pair of group elements.

Definition at line 30 of file ciphertext.hpp.

Constructor & Destructor Documentation

CipherText::CipherText	(	verifierUtils::ByteTree *	bt,
		CipherGroup	c
	)

Reads the two children of bt to retrieve the bytetree representations of u and v as elements of c.

Definition at line 19 of file ciphertext.cpp.

                                                                :
        u(bt->getChild(0),c.getGrp()),
        v(bt->getChild(1),c.getGrp())
{
        if ( (!bt->isNode())  ||  (bt->size() != 2) )
        {
                std::cout<<"ERROR: in CipherText(bt,c), bt is not a "
                         <<"Node or is not of size 2.\nbt=";
                bt->prettyPrint("");
                std::cout<<std::endl;
                exit(1);
        }