org.cryptimeleon.math.structures.groups.elliptic

Interface BilinearGroupImpl

All Superinterfaces:

Representable, StandaloneRepresentable

All Known Implementing Classes:

DebugBilinearGroupImpl

public interface BilinearGroupImpl
extends StandaloneRepresentable

A concrete implementation of a bilinear group.

Usually not used directly, but instead wrapped in a BilinearGroup instance. This allows for either plain evaluation via BasicBilinearGroup or lazy evaluation via LazyBilinearGroup.

Method Summary

Modifier and Type	Method and Description
BilinearMapImpl	getBilinearMap() Returns the BilinearMapImpl (contains the pairing operation) belonging to this BilinearGroupImpl.
GroupImpl	getG1() Returns the source group G1 implementation associated with this bilinear group implementation.
GroupImpl	getG2() Returns the source group G2 implementation associated with this bilinear group implementation.
GroupImpl	getGT() Returns the target group G2 implementation associated with this bilinear group implementation.
HashIntoGroupImpl	getHashIntoG1() Retrieves a hash function implementation that maps byte arrays to G1.
HashIntoGroupImpl	getHashIntoG2() Retrieves a hash function implementation that maps byte arrays to G2.
HashIntoGroupImpl	getHashIntoGT() Retrieves a hash function implementation that maps byte arrays to GT.
GroupHomomorphismImpl	getHomomorphismG2toG1() Retrieves the homomorphism implementation from G2 to G1 if it exists.
BilinearGroup.Type	getPairingType()
java.lang.Integer	getSecurityLevel()

Methods inherited from interface org.cryptimeleon.math.serialization.Representable

getRepresentation

Method Detail

getG1

GroupImpl getG1()

Returns the source group G1 implementation associated with this bilinear group implementation.

getG2

GroupImpl getG2()

Returns the source group G2 implementation associated with this bilinear group implementation.

getGT

GroupImpl getGT()

Returns the target group G2 implementation associated with this bilinear group implementation.

getBilinearMap

BilinearMapImpl getBilinearMap()

Returns the BilinearMapImpl (contains the pairing operation) belonging to this BilinearGroupImpl.

getHomomorphismG2toG1

GroupHomomorphismImpl getHomomorphismG2toG1()
                                     throws java.lang.UnsupportedOperationException

Retrieves the homomorphism implementation from G2 to G1 if it exists.

Throws:

java.lang.UnsupportedOperationException - if no such homomorphism exists or the bilinear group is not configured to support such functionality

getHashIntoG1

HashIntoGroupImpl getHashIntoG1()
                         throws java.lang.UnsupportedOperationException

Retrieves a hash function implementation that maps byte arrays to G1.

Throws:

java.lang.UnsupportedOperationException - if no such hash function exists or the bilinear group is not configured to support such functionality

getHashIntoG2

HashIntoGroupImpl getHashIntoG2()
                         throws java.lang.UnsupportedOperationException

Retrieves a hash function implementation that maps byte arrays to G2.

Throws:

java.lang.UnsupportedOperationException - if no such hash function exists or the bilinear group is not configured to support such functionality

getHashIntoGT

HashIntoGroupImpl getHashIntoGT()
                         throws java.lang.UnsupportedOperationException

Retrieves a hash function implementation that maps byte arrays to GT.

Throws:

java.lang.UnsupportedOperationException - if no such hash function exists or the bilinear group is not configured to support such functionality

getSecurityLevel

java.lang.Integer getSecurityLevel()

getPairingType

BilinearGroup.Type getPairingType()