org.conqat.lib.commons.digest

Class MD5Digest

java.lang.Object

org.conqat.lib.commons.collections.ByteArrayWrapper

org.conqat.lib.commons.digest.MD5Digest

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<ByteArrayWrapper>

public final class MD5Digest
extends ByteArrayWrapper

An MD5 digest. This is just a thin wrapper around a byte array with some convenience methods. This class is used instead of plain strings to save both memory and (some) execution time.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.conqat.lib.commons.collections.ByteArrayWrapper

ByteArrayWrapper.Comparator

Field Summary

Fields

Modifier and Type	Field and Description
static int	MD5_BYTES Number of bytes in an MD5 sum.

Fields inherited from class org.conqat.lib.commons.collections.ByteArrayWrapper

array

Constructor Summary

Constructors

Constructor and Description
MD5Digest(byte[] digest) Constructor.
MD5Digest(java.security.MessageDigest digest) Constructor.

Method Summary

Modifier and Type	Method and Description
void	insertIntoDigest(java.security.MessageDigest digest) Inserts the digest data into the given MD.
int	partialHashCode() Calculates and returns a hashcode that only depends on the first 3 bytes.

Methods inherited from class org.conqat.lib.commons.collections.ByteArrayWrapper

compareTo, equals, getBytes, hashCode, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

MD5_BYTES

public static final int MD5_BYTES

Number of bytes in an MD5 sum.

See Also:

Constant Field Values

Constructor Detail

MD5Digest

public MD5Digest(java.security.MessageDigest digest)

Constructor. This calls MessageDigest.digest(), so the digest will be reset afterwards.

MD5Digest

public MD5Digest(byte[] digest)

Constructor.

Method Detail

insertIntoDigest

public void insertIntoDigest(java.security.MessageDigest digest)

Inserts the digest data into the given MD. This method is used to rehash multiple hashes.

This method is provided instead of a getter, to keep this immutable.

partialHashCode

public int partialHashCode()

Calculates and returns a hashcode that only depends on the first 3 bytes.