com.kount.ris.util

Class Khash

java.lang.Object

com.kount.ris.util.Khash

public final class Khash
extends Object

Class for creating Kount RIS KHASH encoding payment tokens.

Version:

$Id$

Author:

Kount <custserv@kount.com>

Method Summary

Modifier and Type	Method and Description
static Khash	getInstance() Method to retrieve the singleton Khash instance.
protected String	hash(String token) Hash a payment token using the Kount hash algorithm.
String	hashGiftCard(int merchantId, String token) Hash a gift card payment token using the Kount hashing algorithm.
String	hashPaymentToken(String token) Create a Kount hash of a provided payment token.
protected static String	sha1(String plainText) Perform SHA1 hash on a string.
static String	sha256(String plain)

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static Khash getInstance()
                         throws RuntimeException

Method to retrieve the singleton Khash instance. It is required that kount.config.key system variable must be present in order for the instance to be initialized.

Returns:

Khash object

Throws:

RuntimeException - A RuntimeException is thrown if kount.config.key system variable has not been set.

sha256

public static String sha256(String plain)
                     throws NoSuchAlgorithmException

Throws:

NoSuchAlgorithmException

hashPaymentToken

public String hashPaymentToken(String token)
                        throws NoSuchAlgorithmException

Create a Kount hash of a provided payment token. Payment tokens that can be hashed via this method include: credit card numbers, Paypal payment IDs, Check numbers, Google Checkout IDs, Bill Me Later IDs, and Green Dot MoneyPak IDs. Throws a NoSuchAlgorithmException if SHA-1 isn't supported.

Parameters:

token - Payment token to be hashed

Returns:

hashed string

Throws:

NoSuchAlgorithmException - When SHA-1 isn't supported

hashGiftCard

public String hashGiftCard(int merchantId,
                           String token)
                    throws NoSuchAlgorithmException

Hash a gift card payment token using the Kount hashing algorithm. Throws a NoSuchAlgorithmException if SHA-1 isn't supported.

Parameters:

merchantId - Merchant ID

token - Payment token to be hashed

Returns:

hashed string

Throws:

NoSuchAlgorithmException - When SHA-1 isn't supported.

hash

protected String hash(String token)
               throws NoSuchAlgorithmException

Hash a payment token using the Kount hash algorithm. Throws a NoSuchAlgorithmException if SHA-1 isn't supported.

Parameters:

token - Payment token to be hashed

Returns:

hashed string

Throws:

NoSuchAlgorithmException - When SHA-1 isn't supported

sha1

protected static String sha1(String plainText)
                      throws NoSuchAlgorithmException

Perform SHA1 hash on a string.

Parameters:

plainText - String to be hashed

Returns:

string

Throws:

NoSuchAlgorithmException - When SHA-1 isn't supported