org.cryptimeleon.craco.sig.sps.akot15.xsig

Class SPSXSIGPublicParameters

java.lang.Object

org.cryptimeleon.craco.sig.sps.SPSPublicParameters

org.cryptimeleon.craco.sig.sps.akot15.AKOT15SharedPublicParameters

org.cryptimeleon.craco.sig.sps.akot15.xsig.SPSXSIGPublicParameters

All Implemented Interfaces:

java.lang.Cloneable, PublicParameters, org.cryptimeleon.math.serialization.Representable, org.cryptimeleon.math.serialization.StandaloneRepresentable

public class SPSXSIGPublicParameters
extends AKOT15SharedPublicParameters

The construction of the AKOT15 signature scheme FSPS2 requires the PublicParameters to match up across building blocks. This class extends these shared parameters with the elements required in XSIGs calculations.

Field Summary

Fields

Modifier and Type	Field and Description
protected org.cryptimeleon.math.structures.groups.GroupElement	group1ElementF1 F_1 \in G_1 in the paper
protected org.cryptimeleon.math.structures.groups.GroupElement	group1ElementF2 F_2 \in G_1 in the paper
protected org.cryptimeleon.math.structures.groups.GroupElement[]	group1ElementsU U_i \in G_1 in the paper
protected org.cryptimeleon.math.structures.groups.GroupElement	group2ElementF1 F^{tilde}_1 \in G_2 in the paper
protected org.cryptimeleon.math.structures.groups.GroupElement	group2ElementF2 F^{tilde}_2 \in G_2 in the paper
protected org.cryptimeleon.math.structures.groups.GroupElement[]	group2ElementsU U_i \in G_2 in the paper

Fields inherited from class org.cryptimeleon.craco.sig.sps.akot15.AKOT15SharedPublicParameters

messageLength

Fields inherited from class org.cryptimeleon.craco.sig.sps.SPSPublicParameters

bilinearGroup, group1ElementG, group2ElementH

Constructor Summary

Constructors

Constructor and Description
SPSXSIGPublicParameters(AKOT15SharedPublicParameters sharedPP, int messageLength)
SPSXSIGPublicParameters(org.cryptimeleon.math.structures.groups.elliptic.BilinearGroup bilinearGroup, int messageLength)
SPSXSIGPublicParameters(org.cryptimeleon.math.serialization.Representation repr)

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o)
org.cryptimeleon.math.structures.groups.elliptic.BilinearGroup	getBilinearGroup()
org.cryptimeleon.math.structures.groups.GroupElement	getGroup1ElementF1()
org.cryptimeleon.math.structures.groups.GroupElement	getGroup1ElementF2()
org.cryptimeleon.math.structures.groups.GroupElement	getGroup1ElementG()
org.cryptimeleon.math.structures.groups.GroupElement[]	getGroup1ElementsU()
org.cryptimeleon.math.structures.groups.GroupElement	getGroup2ElementF1()
org.cryptimeleon.math.structures.groups.GroupElement	getGroup2ElementF2()
org.cryptimeleon.math.structures.groups.GroupElement	getGroup2ElementH()
org.cryptimeleon.math.structures.groups.GroupElement[]	getGroup2ElementsU()
int	hashCode()
void	setBilinearGroup(org.cryptimeleon.math.structures.groups.elliptic.BilinearGroup bilinearGroup)

Methods inherited from class org.cryptimeleon.craco.sig.sps.akot15.AKOT15SharedPublicParameters

clone, getBilinearMap, getMessageLength, getRepresentation, setMessageLength

Methods inherited from class org.cryptimeleon.craco.sig.sps.SPSPublicParameters

getG1GroupGenerator, getG2GroupGenerator, getGT, getZp

Methods inherited from class java.lang.Object

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

Field Detail

group1ElementF1

protected org.cryptimeleon.math.structures.groups.GroupElement group1ElementF1

F_1 \in G_1 in the paper

group1ElementF2

protected org.cryptimeleon.math.structures.groups.GroupElement group1ElementF2

F_2 \in G_1 in the paper

group2ElementF1

protected org.cryptimeleon.math.structures.groups.GroupElement group2ElementF1

F^{tilde}_1 \in G_2 in the paper

group2ElementF2

protected org.cryptimeleon.math.structures.groups.GroupElement group2ElementF2

F^{tilde}_2 \in G_2 in the paper

group1ElementsU

protected org.cryptimeleon.math.structures.groups.GroupElement[] group1ElementsU

U_i \in G_1 in the paper

group2ElementsU

protected org.cryptimeleon.math.structures.groups.GroupElement[] group2ElementsU

U_i \in G_2 in the paper

Constructor Detail

SPSXSIGPublicParameters

public SPSXSIGPublicParameters(org.cryptimeleon.math.structures.groups.elliptic.BilinearGroup bilinearGroup,
                               int messageLength)

SPSXSIGPublicParameters

public SPSXSIGPublicParameters(AKOT15SharedPublicParameters sharedPP,
                               int messageLength)

SPSXSIGPublicParameters

public SPSXSIGPublicParameters(org.cryptimeleon.math.serialization.Representation repr)

Method Detail

getBilinearGroup

public org.cryptimeleon.math.structures.groups.elliptic.BilinearGroup getBilinearGroup()

Overrides:

getBilinearGroup in class AKOT15SharedPublicParameters

setBilinearGroup

public void setBilinearGroup(org.cryptimeleon.math.structures.groups.elliptic.BilinearGroup bilinearGroup)

getGroup1ElementG

public org.cryptimeleon.math.structures.groups.GroupElement getGroup1ElementG()

getGroup2ElementH

public org.cryptimeleon.math.structures.groups.GroupElement getGroup2ElementH()

getGroup1ElementF1

public org.cryptimeleon.math.structures.groups.GroupElement getGroup1ElementF1()

getGroup1ElementF2

public org.cryptimeleon.math.structures.groups.GroupElement getGroup1ElementF2()

getGroup2ElementF1

public org.cryptimeleon.math.structures.groups.GroupElement getGroup2ElementF1()

getGroup2ElementF2

public org.cryptimeleon.math.structures.groups.GroupElement getGroup2ElementF2()

getGroup1ElementsU

public org.cryptimeleon.math.structures.groups.GroupElement[] getGroup1ElementsU()

getGroup2ElementsU

public org.cryptimeleon.math.structures.groups.GroupElement[] getGroup2ElementsU()

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class AKOT15SharedPublicParameters

hashCode

public int hashCode()

Overrides:

hashCode in class AKOT15SharedPublicParameters