U.S. flag   An unofficial archive of your favorite United States government website
Dot gov

Official websites do not use .rip
We are an unofficial archive, replace .rip by .gov in the URL to access the official website. Access our document index here.


Secure websites use HTTPS
A lock (Dot gov) or https:// means you've safely connected to our website. Please do not share sensitive information with us.

Ordered t-way Combinations for Testing State-based Systems: NIST releases Cybersecurity White Paper 26
June 13, 2022

Fault detection often depends on the specific order of inputs that establish states which eventually lead to a failure. However, beyond basic structural coverage metrics, it is often difficult to determine whether code has been exercised sufficiently to establish confidence in its functions.

NIST Cybersecurity White Paper 26, Ordered t-way Combinations for Testing State-based Systems, describes the use of ordered t-way combinations of input values in system testing and how to construct adequate blocks of test inputs for state-based systems. This method can be used to ensure that relevant combinations of input values have been tested with adequate diversity of ordering to ensure correct operation. Examples of application areas include network protocols, transaction processing, and other systems where continuous streams of inputs are processed. 

Related Topics

Security and Privacy: testing & validation

Technologies: combinatorial testing, software & firmware

Created June 13, 2022