org.cryptimeleon.math.structures.groups.elliptic.type1.supersingular

Class SupersingularTateGroupImpl

java.lang.Object

org.cryptimeleon.math.structures.groups.elliptic.type1.supersingular.SupersingularTateGroupImpl

All Implemented Interfaces:

Representable, StandaloneRepresentable, BilinearGroupImpl

public class SupersingularTateGroupImpl
extends java.lang.Object
implements BilinearGroupImpl

The implementation of our supersingular bilinear group.

Field Summary

Fields

Modifier and Type	Field and Description
protected int[]	minimumFieldSize
protected int[]	securityLimits

Constructor Summary

Constructors

Constructor and Description
SupersingularTateGroupImpl(int securityParameter)
SupersingularTateGroupImpl(Representation repr)

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o)
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.
IdentityIsomorphism	getHomomorphismG2toG1() Retrieves the homomorphism implementation from G2 to G1 if it exists.
BilinearGroup.Type	getPairingType()
Representation	getRepresentation() The representation of this object.
java.lang.Integer	getSecurityLevel()
int	hashCode()
protected void	init(int logExtFieldSize)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

securityLimits

protected final int[] securityLimits

minimumFieldSize

protected final int[] minimumFieldSize

Constructor Detail

SupersingularTateGroupImpl

public SupersingularTateGroupImpl(int securityParameter)

SupersingularTateGroupImpl

public SupersingularTateGroupImpl(Representation repr)

Method Detail

getG1

public GroupImpl getG1()

Description copied from interface: BilinearGroupImpl

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

Specified by:

getG1 in interface BilinearGroupImpl

getG2

public GroupImpl getG2()

Description copied from interface: BilinearGroupImpl

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

Specified by:

getG2 in interface BilinearGroupImpl

getGT

public GroupImpl getGT()

Description copied from interface: BilinearGroupImpl

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

Specified by:

getGT in interface BilinearGroupImpl

getBilinearMap

public BilinearMapImpl getBilinearMap()

Description copied from interface: BilinearGroupImpl

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

Specified by:

getBilinearMap in interface BilinearGroupImpl

getHomomorphismG2toG1

public IdentityIsomorphism getHomomorphismG2toG1()
                                          throws java.lang.UnsupportedOperationException

Description copied from interface: BilinearGroupImpl

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

Specified by:

getHomomorphismG2toG1 in interface BilinearGroupImpl

Throws:

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

getHashIntoG1

public HashIntoGroupImpl getHashIntoG1()
                                throws java.lang.UnsupportedOperationException

Description copied from interface: BilinearGroupImpl

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

Specified by:

getHashIntoG1 in interface BilinearGroupImpl

Throws:

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

getHashIntoG2

public HashIntoGroupImpl getHashIntoG2()
                                throws java.lang.UnsupportedOperationException

Description copied from interface: BilinearGroupImpl

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

Specified by:

getHashIntoG2 in interface BilinearGroupImpl

Throws:

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

getHashIntoGT

public HashIntoGroupImpl getHashIntoGT()
                                throws java.lang.UnsupportedOperationException

Description copied from interface: BilinearGroupImpl

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

Specified by:

getHashIntoGT in interface BilinearGroupImpl

Throws:

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

getSecurityLevel

public java.lang.Integer getSecurityLevel()

Specified by:

getSecurityLevel in interface BilinearGroupImpl

getPairingType

public BilinearGroup.Type getPairingType()

Specified by:

getPairingType in interface BilinearGroupImpl

getRepresentation

public Representation getRepresentation()

Description copied from interface: Representable

The representation of this object. Used for serialization. A convenient way to implement this is using @link ReprUtil

Specified by:

getRepresentation in interface Representable

Returns:

a Representation or null if an equal object can be recreated without any information.

See Also:

Representation

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

init

protected void init(int logExtFieldSize)