Brief History
FIPS 140-1, issued on 11 January 1994, was developed by a government and industry working group, composed of vendors and users of cryptographic equipment. The group identified the four "security levels" and eleven "requirement areas" listed above, and specified requirements for each area at each level.
FIPS 140-2, issued on 25 May 2001, takes account of changes in available technology and official standards since 1994, and of comments received from the vendor, tester, and user communities. It was the main input document to the international standard ISO/IEC 19790:2006 Security requirements for cryptographic modules issued on 1 March 2006.
FIPS 140-3 is a new version of the standard which is currently under development. In the first draft version of the FIPS 140-3 standard, NIST introduced a new software security section, one additional level of assurance (Level 5) and new Simple Power Analysis (SPA) and Differential Power Analysis (DPA) requirements. The draft issued on 11 Sep 2009, however, reverted back to four security levels and limits the security levels of software to levels 1 and 2.
Read more about this topic: FIPS 140
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