This method generates keys. This method is implementation specific and should not be present in any general purpose interface
extracted from this class.
throws: Exception -
Hash the value by converting to a string, running the hash algorithm, and then base64'ng the results.
Returns a blank string if any problems occur or the input value is null or empty.
See Also:org.kuali.core.service.EncryptionService.hash(java.lang.Object)