Package org.fcrepo.kernel.api.utils

Class ContentDigest

java.lang.Object

org.fcrepo.kernel.api.utils.ContentDigest

public final class ContentDigest
extends Object

Digest helpers to convert digests (checksums) into URI strings (based loosely on Magnet URIs)

Since:

Mar 6, 2013

Author:

Chris Beer

Method Summary

Modifier and Type	Method	Description
static URI	asURI(String algorithm, byte[] data)	Convert a MessageDigest algorithm and checksum byte-array data to a URN
static URI	asURI(String algorithm, String value)	Convert a MessageDigest algorithm and checksum value to a URN
static String	getAlgorithm(URI digestUri)	Given a digest URI, get the corresponding MessageDigest algorithm

Methods inherited from class java.lang.Object

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

Method Details

asURI

public static URI asURI(String algorithm,
 String value)

Convert a MessageDigest algorithm and checksum value to a URN

Parameters:

algorithm - the message digest algorithm

value - the checksum value

Returns:

URI

asURI

public static URI asURI(String algorithm,
 byte[] data)

Convert a MessageDigest algorithm and checksum byte-array data to a URN

Parameters:

algorithm - the message digest algorithm

data - the checksum byte-array data

Returns:

URI

getAlgorithm

public static String getAlgorithm(URI digestUri)

Given a digest URI, get the corresponding MessageDigest algorithm

Parameters:

digestUri - the digest uri

Returns:

MessageDigest algorithm