FIPS 140
The 140 series of Federal Information Processing Standards (FIPS) are U.S. government computer security standards that specify requirements for cryptography modules. As of December 2006, the current version of the standard is FIPS 140-2, issued on 25 May 2001.
Read more about FIPS 140: Purpose of FIPS 140, Security Levels, Scope of Requirements, Brief History