org.apache.catalina.util

Class ConcurrentMessageDigest

java.lang.Object

org.apache.catalina.util.ConcurrentMessageDigest

public class ConcurrentMessageDigest
extends Object

A thread safe wrapper around MessageDigest that does not make use of ThreadLocal and - broadly - only creates enough MessageDigest objects to satisfy the concurrency requirements.

Method Summary

Modifier and Type	Method and Description
static byte[]	digest(String algorithm, byte[] input)
static byte[]	digestMD5(byte[] input)
static void	init(String algorithm) Ensures that digest(String, byte[]) and #digestAsHex(String, byte[]) will support the specified algorithm.

Methods inherited from class java.lang.Object

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

Method Detail

digestMD5

public static byte[] digestMD5(byte[] input)

digest

public static byte[] digest(String algorithm,
                            byte[] input)

init

public static void init(String algorithm)
                 throws NoSuchAlgorithmException

Ensures that digest(String, byte[]) and #digestAsHex(String, byte[]) will support the specified algorithm. This method must be called and return successfully before using digest(String, byte[]) or #digestAsHex(String, byte[]).

Parameters:

algorithm - The message digest algorithm to be supported

Throws:

NoSuchAlgorithmException - If the algorithm is not supported by the JVM