org.cryptimeleon.math.hash.impl

Class SHAHashAccumulator

java.lang.Object

org.cryptimeleon.math.hash.ByteAccumulator

org.cryptimeleon.math.hash.impl.HashAccumulator

org.cryptimeleon.math.hash.impl.SHAHashAccumulator

All Implemented Interfaces:

java.lang.Comparable<ByteAccumulator>

public class SHAHashAccumulator
extends HashAccumulator

A HashAccumulator that is used to implement the HashFunctions SHA256HashFunction and SHA512HashFunction.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.security.MessageDigest	digest

Fields inherited from class org.cryptimeleon.math.hash.ByteAccumulator

SEPARATOR

Constructor Summary

Constructors

Constructor and Description
SHAHashAccumulator(java.lang.String algorithm)

Method Summary

Modifier and Type	Method and Description
void	append(byte[] bytes) Appends bytes to the input x of this accumulator.
byte[]	extractBytes() Extracts f(x) from the accumulator, where x was input by append() calls.

Methods inherited from class org.cryptimeleon.math.hash.ByteAccumulator

append, append, append, append, appendAndSeparate, appendAndSeparate, appendPadded, appendSeperator, compareTo, escapeAndAppend, escapeAndAppend, escapeAndAppend, escapeAndSeparate, escapeAndSeparate, escapeAndSeparate

Methods inherited from class java.lang.Object

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

Field Detail

digest

protected final java.security.MessageDigest digest

Constructor Detail

SHAHashAccumulator

public SHAHashAccumulator(java.lang.String algorithm)

Method Detail

append

public void append(byte[] bytes)

Description copied from class: ByteAccumulator

Appends bytes to the input x of this accumulator.

Specified by:

append in class ByteAccumulator

extractBytes

public byte[] extractBytes()

Description copied from class: ByteAccumulator

Extracts f(x) from the accumulator, where x was input by append() calls.

Specified by:

extractBytes in class ByteAccumulator

Returns:

f(x)