/**
* Validate the token expiration date.
*
* @param expirationDate - Token expiration date.
* @return - Token status.
*/
public static boolean isValid(Date expirationDate) {
Date currentDate = new Date();
String formattedDate = dateFormat.format(currentDate);
currentDate = convertDate(formattedDate);
boolean isExpired = currentDate.after(expirationDate);
boolean isEqual = currentDate.equals(expirationDate);
return isExpired || isEqual;
}
/**
* Generate the challenge string.
*
* @return a generated nonce.
*/
public String generateNonce() {
// Get the time of day and run MD5 over it.
Date date = new Date();
long time = date.getTime();
Random rand = new Random();
long pad = rand.nextLong();
String nonceString = (new Long(time)).toString() + (new Long(pad)).toString();
byte mdbytes[] = messageDigest.digest(nonceString.getBytes());
// Convert the mdbytes array into a hex string.
return ProxyUtilities.toHexString(mdbytes);
}