TripleDecompositionProtocolInstance Class Reference

Definition of the class TripleDecompositionProtocolInstance. More...

#include <TripleDecompositionKeyGeneration.h>

Public Member Functions
	TripleDecompositionProtocolInstance (int braid_rank, quadruple< Word, Word, Word, Word > conjugators, quintuple< Word, Word, Word, Word, Word > privateKeyA, quintuple< Word, Word, Word, Word, Word > privateKeyB)
	Create an instance of the protocol for a particular choice of certain public/private information.
int	getBraidRank () const
	(accessor function) Get the rank of the braid group.
quintuple< Word, Word, Word, Word, Word >	getPrivateKeyA () const
	(accessor function) Get the private key of the first party (Alice).
quintuple< Word, Word, Word, Word, Word >	getPrivateKeyB () const
	(accessor function) Get the private key of the second party (Bob).
triple< Word, Word, Word >	getPublicKeyA () const
	(accessor function) Get the public key of the first party (Alice).
triple< Word, Word, Word >	getPublicKeyB () const
	(accessor function) Get the public key of the second party (Bob).
ThRightNormalForm	getSharedKey () const
	(accessor function) Get the shared key of two parties.
Static Public Member Functions
static TripleDecompositionProtocolInstance	random (int braid_rank, int baseLenth, int keyLength)
	Generate a random instance of the protocol.
Static Private Member Functions
static Word	randomWord (int lowerIndex, int upperIndex, int len)
	Generate a random reduced word over the alphabet $x_l,\ldots,x_u$ of length len.
Private Attributes
int	theRank
	the rank of the braid group
quintuple< Word, Word, Word, Word, Word >	thePrivateKeyA
	The private key of the first party (Alice).
quintuple< Word, Word, Word, Word, Word >	thePrivateKeyB
	The private key of the second party (Bob).
triple< Word, Word, Word >	thePublicKeyA
	The public key of the first party (Alice).
triple< Word, Word, Word >	thePublicKeyB
	The public key of the second party (Bob).
quadruple< Word, Word, Word, Word >	theConjugators
	The conjugators for the elementary commuting subgroups (public information).
ThRightNormalForm	theSharedKey
	The shared key .

Detailed Description

Definition of the class TripleDecompositionProtocolInstance.

Objects of this class contain public and private information of two parties as used in Kurt' key exchange protocol. Also it contains a routine for random generation of keys as proposed in Y. Kurt, J. Koh, "A New Key Exchange Primitive Based on the Triple Decomposition Problem".

Definition at line 34 of file TripleDecompositionKeyGeneration.h.

Constructor & Destructor Documentation

TripleDecompositionProtocolInstance::TripleDecompositionProtocolInstance	(	int	braid_rank,
		quadruple< Word, Word, Word, Word >	conjugators,
		quintuple< Word, Word, Word, Word, Word >	privateKeyA,
		quintuple< Word, Word, Word, Word, Word >	privateKeyB
	)

Create an instance of the protocol for a particular choice of certain public/private information.

Member Function Documentation

int TripleDecompositionProtocolInstance::getBraidRank ( ) const [inline]

(accessor function) Get the rank of the braid group.

Definition at line 69 of file TripleDecompositionKeyGeneration.h.

References theRank.

quintuple< Word , Word , Word , Word , Word > TripleDecompositionProtocolInstance::getPrivateKeyA ( ) const [inline]

(accessor function) Get the private key of the first party (Alice).

Definition at line 73 of file TripleDecompositionKeyGeneration.h.

References thePrivateKeyA.

quintuple< Word , Word , Word , Word , Word > TripleDecompositionProtocolInstance::getPrivateKeyB ( ) const [inline]

(accessor function) Get the private key of the second party (Bob).

Definition at line 75 of file TripleDecompositionKeyGeneration.h.

References thePrivateKeyB.

triple< Word , Word , Word > TripleDecompositionProtocolInstance::getPublicKeyA ( ) const [inline]

(accessor function) Get the public key of the first party (Alice).

Definition at line 79 of file TripleDecompositionKeyGeneration.h.

References thePublicKeyA.

triple< Word , Word , Word > TripleDecompositionProtocolInstance::getPublicKeyB ( ) const [inline]

(accessor function) Get the public key of the second party (Bob).

Definition at line 81 of file TripleDecompositionKeyGeneration.h.

References thePublicKeyB.

ThRightNormalForm TripleDecompositionProtocolInstance::getSharedKey ( ) const [inline]

(accessor function) Get the shared key of two parties.

Definition at line 85 of file TripleDecompositionKeyGeneration.h.

References theSharedKey.

static TripleDecompositionProtocolInstance TripleDecompositionProtocolInstance::random	(	int	braid_rank,
		int	baseLenth,
		int	keyLength
	)			`[static]`

Generate a random instance of the protocol.

Parameters:

	braid_rank	- rank of the braid group;
	baseLenth	- the length of thePublicKey.first
	keyLength	- the length of thePrivateKey

static Word TripleDecompositionProtocolInstance::randomWord	(	int	lowerIndex,
		int	upperIndex,
		int	len
	)			`[static, private]`

Generate a random reduced word over the alphabet $x_l,\ldots,x_u$ of length len.

Member Data Documentation

quadruple< Word , Word , Word , Word > TripleDecompositionProtocolInstance::theConjugators [private]

The conjugators for the elementary commuting subgroups (public information).

The conjugators $s_1,s_2,s_3,s_4$ . See notation of Y. Kurt, J. Koh, "A New Key Exchange Primitive Based on the Triple Decomposition Problem".

Definition at line 147 of file TripleDecompositionKeyGeneration.h.

quintuple< Word , Word , Word , Word , Word > TripleDecompositionProtocolInstance::thePrivateKeyA [private]

The private key of the first party (Alice).

The private key $Private_A = (a_1,a_2,a_3,x_1,x_2)$ . See notation of Y. Kurt, J. Koh, "A New Key Exchange Primitive Based on the Triple Decomposition Problem".

Definition at line 116 of file TripleDecompositionKeyGeneration.h.

Referenced by getPrivateKeyA().

quintuple< Word , Word , Word , Word , Word > TripleDecompositionProtocolInstance::thePrivateKeyB [private]

The private key of the second party (Bob).

The private key $Private_B = (b_1,b_2,b_3,y_1,y_2)$ . See notation of Y. Kurt, J. Koh, "A New Key Exchange Primitive Based on the Triple Decomposition Problem".