org.cryptimeleon.math.structures.rings.zn

Class HashIntoZn

java.lang.Object

org.cryptimeleon.math.structures.rings.zn.HashIntoZn

All Implemented Interfaces:

Representable, StandaloneRepresentable, HashIntoStructure

Direct Known Subclasses:

HashIntoZp

public class HashIntoZn
extends java.lang.Object
implements HashIntoStructure

A hash function that maps to Zn.

Field Summary

Fields

Modifier and Type	Field and Description
protected HashFunction	hashIntoZn The hash function.
protected Zn	structure The hash target structure.

Constructor Summary

Constructors

Constructor and Description
HashIntoZn(java.math.BigInteger n)
HashIntoZn(HashFunction hashFunction, java.math.BigInteger n)
HashIntoZn(HashFunction hashFunction, Zn zn)
HashIntoZn(Representation repr) Reconstructs the hash function from its representation.
HashIntoZn(Zn zn)

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj)
Representation	getRepresentation() The representation of this object.
Zn	getTargetStructure() Returns the ring Zn that this function hashes to.
Zn.ZnElement	hash(byte[] x) Hashes a byte array into the structure.
Zn.ZnElement	hash(java.lang.String x) Hashes a String (UTF-8 encoded) 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.HashIntoStructure

hash

Field Detail

hashIntoZn

protected HashFunction hashIntoZn

The hash function.

structure

protected Zn structure

The hash target structure.

Constructor Detail

HashIntoZn

public HashIntoZn(HashFunction hashFunction,
                  Zn zn)

HashIntoZn

public HashIntoZn(HashFunction hashFunction,
                  java.math.BigInteger n)

HashIntoZn

public HashIntoZn(java.math.BigInteger n)

HashIntoZn

public HashIntoZn(Zn zn)

HashIntoZn

public HashIntoZn(Representation repr)

Reconstructs the hash function from its representation.

Method Detail

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

hash

public Zn.ZnElement hash(byte[] x)

Description copied from interface: HashIntoStructure

Hashes a byte array into the structure.

Specified by:

hash in interface HashIntoStructure

Parameters:

x - a sequence of bytes to hash

Returns:

the resulting structure element

hash

public Zn.ZnElement hash(java.lang.String x)

Description copied from interface: HashIntoStructure

Hashes a String (UTF-8 encoded) into the structure.

Specified by:

hash in interface HashIntoStructure

Parameters:

x - a String

Returns:

the resulting structure element

getTargetStructure

public Zn getTargetStructure()

Returns the ring Zn that this function hashes to.

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