package net.authorize;

import java.io.Serializable;

import java.math.BigInteger;

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

public abstract class Result<T> implements Serializable {

private static final long serialVersionUID = 1L;

protected Transaction transaction;

protected T target;

/**

* Get the request transaction.

*

* @return Transaction

*/

public Transaction getTransaction() {

return this.transaction;

}

/**

* Get the target (request + response transaction).

*

* @return Transaction

*/

public T getTarget() {

return this.target;

}

/**

* Verify that the relay response post is actually coming from

* AuthorizeNet.

*

* @return boolean true if the txn came from Authorize.Net

*/

public static boolean isAuthorizeNetResponse(String md5Value, String apiLoginId, String amount, String transId, String transHash) {

String md5Check = null;

try {

MessageDigest digest = java.security.MessageDigest.getInstance( MessageDigestAlgorithm);

String salt = md5Value + apiLoginId + transId + amount;

digest.update( salt.getBytes());

md5Check = new BigInteger(1,digest.digest()).toString(16).toUpperCase();

while(md5Check.length() < 32) {

md5Check = "0" + md5Check;

}

} catch (NoSuchAlgorithmException nsae) {

//

}

boolean result = md5Check != null && md5Check.equalsIgnoreCase( transHash);

return result;

}

public static final String MessageDigestAlgorithm = "MD5";

}