edu.washington.cs.rfid.security
Class KeyHash

java.lang.Object
  edu.washington.cs.rfid.security.KeyHash

public class KeyHash
extends java.lang.Object

Implements algorithms to hash String keys to longs.

Author:

Evan

Constructor Summary

KeyHash()

Method Summary

static long	hash64(java.lang.String k, long initval) Hashes a String to a 64-bit number.
static long	hashMD5(java.lang.String k) Returns the long result of the first 64 bits of an MD5 hash XOR'd with the last 64 bits.

Methods inherited from class java.lang.Object

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

Constructor Detail

KeyHash

public KeyHash()

Method Detail

hash64

public static long hash64(java.lang.String k,
                          long initval)

Hashes a String to a 64-bit number.

Parameters:

k - The String key

initval - An initial value

Returns:

The 64-bit hash

hashMD5

public static long hashMD5(java.lang.String k)

Returns the long result of the first 64 bits of an MD5 hash XOR'd with the last 64 bits.

Parameters:

k - The key to hash

Returns:

The XOR'd hash as a long