org.cryptimeleon.math.structures.rings.zn

Class HashIntoZnAdditiveGroup

java.lang.Object

org.cryptimeleon.math.structures.rings.zn.HashIntoZnAdditiveGroup

All Implemented Interfaces:

Representable, StandaloneRepresentable, HashIntoGroup, HashIntoStructure

public class HashIntoZnAdditiveGroup
extends java.lang.Object
implements HashIntoGroup

Hashes into the additive subgroup of Zn.

See Also:

HashIntoZn

Field Summary

Fields

Modifier and Type	Field and Description
protected RingGroup	structure The target additive group.
protected HashIntoZn	znHash The HashIntoZn underlying this hash.

Constructor Summary

Constructors

Constructor and Description
HashIntoZnAdditiveGroup(java.math.BigInteger n) Initializes this hash to the Zn based on the given n.
HashIntoZnAdditiveGroup(HashIntoZn hashIntoZn) Initializes this hash based on an existing HashIntoZn.
HashIntoZnAdditiveGroup(Representation repr) Recreates hash function from representation.
HashIntoZnAdditiveGroup(Zn ring) Initializes this hash to the additive subgroup of the given Zn.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj)
Representation	getRepresentation() The representation of this object.
RingGroup.RingGroupElement	hash(byte[] x) Hashes a byte array into the structure.
int	hashCode()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.cryptimeleon.math.structures.groups.HashIntoGroup

hash, hash

Field Detail

znHash

protected HashIntoZn znHash

The HashIntoZn underlying this hash.

structure

protected RingGroup structure

The target additive group.

Constructor Detail

HashIntoZnAdditiveGroup

public HashIntoZnAdditiveGroup(java.math.BigInteger n)

Initializes this hash to the Zn based on the given n.

HashIntoZnAdditiveGroup

public HashIntoZnAdditiveGroup(Zn ring)

Initializes this hash to the additive subgroup of the given Zn.

HashIntoZnAdditiveGroup

public HashIntoZnAdditiveGroup(Representation repr)

Recreates hash function from representation.

HashIntoZnAdditiveGroup

public HashIntoZnAdditiveGroup(HashIntoZn hashIntoZn)

Initializes this hash based on an existing HashIntoZn.

Method Detail

hash

public RingGroup.RingGroupElement hash(byte[] x)

Description copied from interface: HashIntoStructure

Hashes a byte array into the structure.

Specified by:

hash in interface HashIntoGroup

Specified by:

hash in interface HashIntoStructure

Parameters:

x - a sequence of bytes to hash

Returns:

the resulting structure element

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

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object