License & Notices


This software was developed at the National Institute of Standards and Technology by employees of the Federal Government in the course of their official duties. Pursuant to title 17 Section 105 of the United States Code, this software is not subject to copyright protection in the U.S. and is in the public domain.

To the extent that any copyright protections may be considered to be held by the authors of this sofware in some jurisdiction outside the United States, the authors hereby waive those copyright protections and dedicate the software to the public domain. Thus, this license may be considered equivalent to Creative Commons 0: ”No Rights Reserved”.

Note that, according to, public domain is compatible with GPL.

We would appreciate acknowledgement if the software is used.

Contributor Notice:

Contributions of software patches and enhancements to this project are welcome; such contributions are assumed to be under the same terms as the software itself. Specifically, if you contribute code, documention, text samples or any other material, you are asserting and acknowledging that: you are the copyright holder of the material or that it is in the public domain; it does not contain any patented material; and that you waive any copyright protections and dedicate the material to the public domain.


 is an experimental system provided by NIST as a public service.

The software is expressly provided ”AS IS.” NIST makes NO warranty of any kind, express, implied, in fact or arising by operation of law, including, without limitation, the implied warranty of merchantability, fitness for a particular purpose, non-infringement and data accuracy. nist neither represents nor warrants that the operation of the software will be uninterrupted or error-free, or that any defects will be corrected. NIST does not warrant or make any representations regarding the use of the software or the results thereof, including but not limited to the correctness, accuracy, reliability, or usefulness of the software.

You are solely responsible for determining the appropriateness of using and distributing the software and you assume all risks associated with its use, including but not limited to the risks and costs of program errors, compliance with applicable laws, damage to or loss of data, programs or equipment, and the unavailability or interruption of operation. This software is not intended to be used in any situation where a failure could cause risk of injury or damage to property.

Privacy Notice: