at.gv.egiz.pdfas.utils
Class DataHashUtils

java.lang.Object
  at.gv.egiz.pdfas.utils.DataHashUtils

public final class DataHashUtils

extends Object

Contains helpful methods for building data hashed.

Data hashes are useful for summarizing the signed data of signatures for debugging and testing purposes. Do not use these hashes for signatures.

A data hash is always a Base64 encoded String.

Author:

wprinz

Constructor Summary

DataHashUtils()

Method Summary

static String	buildDataHash(byte[] data)
static String	buildDataHash(InputStream is)
static String	buildDataHash(SignatureHolder sh)
static String	buildDataHash(String text)
protected static String	encodeDigest(byte[] rawDigest)
protected static MessageDigest	getMessageDigest()

Methods inherited from class java.lang.Object

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

Constructor Detail

DataHashUtils

public DataHashUtils()

Method Detail

buildDataHash

public static String buildDataHash(String text)

Parameters:

text -

Returns:

buildDataHash

public static String buildDataHash(byte[] data)

buildDataHash

public static String buildDataHash(InputStream is)

buildDataHash

public static String buildDataHash(SignatureHolder sh)

getMessageDigest

protected static MessageDigest getMessageDigest()

encodeDigest

protected static String encodeDigest(byte[] rawDigest)