org.cryptacular

Class SaltedHash

java.lang.Object

org.cryptacular.SaltedHash

public class SaltedHash
extends Object

Container for the output of a salted hash operation that includes both the digest output and salt value.

Author:

Middleware Services

Constructor Summary

Constructors

Constructor and Description
SaltedHash(byte[] hash, byte[] salt) Creates a new instance with digest and salt data.
SaltedHash(byte[] hashWithSalt, int digestLength, boolean toEnd) Creates a new instance from byte input that contains the concatenation of digest output and salt.

Method Summary

Modifier and Type	Method and Description
byte[]	concatenateSalt(boolean toEnd) Gets a byte array containing the concatenation of digest output and salt.
String	concatenateSalt(boolean toEnd, Encoder encoder) Gets an encoded string of the concatenation of digest output and salt.
byte[]	getHash()
byte[]	getSalt()
byte[]	getSalt(int n) Gets N bytes of salt.

Methods inherited from class java.lang.Object

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

Constructor Detail

SaltedHash

public SaltedHash(byte[] hash,
                  byte[] salt)

Creates a new instance with digest and salt data.

Parameters:

hash - Digest output.

salt - Salt value used to compute salt.

SaltedHash

public SaltedHash(byte[] hashWithSalt,
                  int digestLength,
                  boolean toEnd)

Creates a new instance from byte input that contains the concatenation of digest output and salt.

Parameters:

hashWithSalt - Concatenation of hash and salt.

digestLength - Number of bytes in digest output.

toEnd - True if salt is appended to end of hash, false if salt is prepended to hash.

Method Detail

getHash

public byte[] getHash()

Returns:

Digest output.

getSalt

public byte[] getSalt()

Returns:

Salt value.

getSalt

public byte[] getSalt(int n)

Gets N bytes of salt.

Parameters:

n - Number of bytes of salt; must be less than or equal to salt size.

Returns:

First N bytes of salt.

concatenateSalt

public String concatenateSalt(boolean toEnd,
                              Encoder encoder)

Gets an encoded string of the concatenation of digest output and salt.

Parameters:

toEnd - True to append salt to end of hash, false to prefix hash with salt.

encoder - Encodes concatenated bytes to a string.

Returns:

Salt concatenated to hash encoded as a string.

concatenateSalt

public byte[] concatenateSalt(boolean toEnd)

Gets a byte array containing the concatenation of digest output and salt.

Parameters:

toEnd - True to append salt to end of hash, false to prefix hash with salt.

Returns:

Salt concatenated to hash.