http://csrc.nist.gov/publications/drafts/800-21-Rev1_September2005.pdf

This draft Second Edition of NIST Special Publication (SP) 800-21, updates and replaces the November 1999 edition of Guideline for Implementing Cryptography in the Federal Government. Many of the references and cryptographic techniques contained in the first edition of NIST SP 800-21 have been amended, rescinded, or superseded since its publication. The current draft offers new tools and techniques.

NIST SP 800-21 [Second Edition], when completed, is intended to provide a structured, yet flexible set of guidelines for selecting, specifying, employing, and evaluating cryptographic protection mechanisms in Federal information systems—and thus, makes a significant contribution toward satisfying the security requirements of the Federal Information Security Management Act (FISMA) of 2002, Public Law 107-347. The current draft also reflects the elimination of the waiver process by the Federal Information Security Management Act (FISMA) of 2002. Under current law, NIST standards and recommendations are binding for Federal systems that are not designated national security systems.

Reviewers are encouraged to provide comments on any aspect of this special publication. Of particular interest are comments on the understandability and usability of the guideline.

Your feedback during the public comment period is essential to the document development process and is greatly appreciated.

 http://csrc.nist.gov/publications/drafts/800-21-Rev1_September2005.pdf