org.bouncycastle.tsp

Class DataGroup

java.lang.Object

org.bouncycastle.tsp.DataGroup

public class DataGroup
extends java.lang.Object

Representation of data groups according to the description provided in RFC4998.

Such data groups represent a set of one or more data objects (e.g. electronic documents) for which an Evidence Record should be generated.

Constructor Summary

Constructors

Constructor and Description
DataGroup(byte[] dataObject)
DataGroup(java.util.List<byte[]> dataObjects)

Method Summary

Modifier and Type	Method and Description
byte[]	getHash(org.bouncycastle.operator.DigestCalculator digestCalculator) Generates a hash for the whole DataGroup.
java.util.TreeSet<byte[]>	getHashes(org.bouncycastle.operator.DigestCalculator digestCalculator) Generates hashes for all the data objects included in the data group.

Methods inherited from class java.lang.Object

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

Constructor Detail

DataGroup

public DataGroup(java.util.List<byte[]> dataObjects)

DataGroup

public DataGroup(byte[] dataObject)

Method Detail

getHashes

public java.util.TreeSet<byte[]> getHashes(org.bouncycastle.operator.DigestCalculator digestCalculator)

Generates hashes for all the data objects included in the data group.

Parameters:

digestCalculator - the DigestCalculator to use for computing the hashes

Returns:

the set of hashes, in ascending order

getHash

public byte[] getHash(org.bouncycastle.operator.DigestCalculator digestCalculator)

Generates a hash for the whole DataGroup.

Parameters:

digestCalculator - the DigestCalculator to use for computing the hash

Returns:

a hash that is representative of the whole DataGroup