org.apache.directory.server.kerberos.shared.crypto.checksum

Class ChecksumHandler

java.lang.Object

org.apache.directory.server.kerberos.shared.crypto.checksum.ChecksumHandler

public class ChecksumHandler
extends Object

A Hashed Adapter encapsulating checksum engines for performing integrity checks.

Author:

Apache Directory Project

Constructor Summary

Constructors

Constructor and Description
ChecksumHandler()

Method Summary

Modifier and Type	Method and Description
Checksum	calculateChecksum(ChecksumType checksumType, byte[] bytes, byte[] key, KeyUsage usage) Calculate a checksum based on raw bytes and an (optional) key for keyed checksums.
void	verifyChecksum(Checksum checksum, byte[] bytes, byte[] key, KeyUsage usage) Verify a checksum by providing the raw bytes and an (optional) key for keyed checksums.

Methods inherited from class java.lang.Object

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

Constructor Detail

ChecksumHandler

public ChecksumHandler()

Method Detail

calculateChecksum

public Checksum calculateChecksum(ChecksumType checksumType,
                                  byte[] bytes,
                                  byte[] key,
                                  KeyUsage usage)
                           throws KerberosException

Calculate a checksum based on raw bytes and an (optional) key for keyed checksums.

Parameters:

checksumType - The type of checksum to use

bytes - The data

key - The key

usage - The key usage

Returns:

The computed Checksum.

Throws:

KerberosException - If the checksum can't be cmputed

verifyChecksum

public void verifyChecksum(Checksum checksum,
                           byte[] bytes,
                           byte[] key,
                           KeyUsage usage)
                    throws KerberosException

Verify a checksum by providing the raw bytes and an (optional) key for keyed checksums.

Parameters:

checksum - The checksum to verify

bytes - The data

key - The key

usage - The key usage

Throws:

KerberosException - If the verification failed