org.cryptimeleon.math.structures.groups.elliptic.nopairing

Class Secp256k1.HashIntoSecp256k1

java.lang.Object

org.cryptimeleon.math.structures.groups.elliptic.nopairing.Secp256k1.HashIntoSecp256k1

All Implemented Interfaces:

Representable, StandaloneRepresentable, HashIntoGroupImpl

Enclosing class:

Secp256k1

public static class Secp256k1.HashIntoSecp256k1
extends java.lang.Object
implements HashIntoGroupImpl

A hash function mapping bit strings into the group such that

Constructor Summary

Constructors

Constructor and Description
HashIntoSecp256k1() Instantiate the hash function with a default internal hash function.
HashIntoSecp256k1(HashIntoZp hash) Instantiate this hash function into Secp256k1
HashIntoSecp256k1(Representation repr)

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o)
Representation	getRepresentation() The representation of this object.
int	hashCode()
GroupElementImpl	hashIntoGroupImpl(byte[] x) Hashes a byte array into the configured group.

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.mappings.impl.HashIntoGroupImpl

hashIntoGroupImpl, hashIntoGroupImpl

Constructor Detail

HashIntoSecp256k1

public HashIntoSecp256k1(HashIntoZp hash)

Instantiate this hash function into Secp256k1

Parameters:

hash - a hash function mapping into the base field Zp that outputs random-looking images (like SHA256 or SHA3)

HashIntoSecp256k1

public HashIntoSecp256k1()

Instantiate the hash function with a default internal hash function.

HashIntoSecp256k1

public HashIntoSecp256k1(Representation repr)

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

hashIntoGroupImpl

public GroupElementImpl hashIntoGroupImpl(byte[] x)

Description copied from interface: HashIntoGroupImpl

Hashes a byte array into the configured group.

Specified by:

hashIntoGroupImpl in interface HashIntoGroupImpl

Parameters:

x - a sequence of bytes to hash

Returns:

a group element

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