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VA Technical Reference Model v 21.7

Secure Hash Standard (SHS)
Secure Hash Standard (SHS) Standard or Specification

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Technologies must be operated and maintained in accordance with Federal and Department security and privacy policies and guidelines. More information on the proper use of the TRM can be found on the TRM Proper Use Tab/Section.

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Description: Secure Hash Standard (SHS) specifies five hash algorithms that can be used to generate digests of messages. The digests are used to detect whether messages have been changed since the digests were generated. This Standard specifies secure hash algorithms (SHA)-SHA-1, SHA-224, SHA-256, SHA-384, SHA-512, SHA-512/224 and SHA-512/256 for computing a condensed representation of electronic data (message). All of the algorithms are iterative, one-way hash functions that can process a message to produce a condensed representation called a message digest. These algorithms enable the determination of a messages integrity; any change to the message will, with a very high probability, result in a different message digest.

Federal Information Processing Standards-Standard Procedure (FIPS-SP)-202: This Standard specifies the Secure Hash Algorithm-3 (SHA-3) family of functions on binary data. Each of the SHA-3 functions is based on an instance of the Keccak algorithm that National Institute of Standards and Technology (NIST) selected as the winner of the SHA-3 Cryptographic Hash Algorithm Competition. This Standard also specifies the Keccak-p family of mathematical permutations, including the permutation that underlies KECCAK, in order to facilitate the development of additional permutation-based cryptographic functions. The SHA-3 family consists of four cryptographic hash functions, called SHA3-224, SHA3-256, SHA3-384, and SHA3-512, and two extendable-output functions (XOFs), called Shake128 and Shake256.
Technology/Standard Usage Requirements: Users must ensure their use of this technology/standard is consistent with VA policies and standards, including, but not limited to, VA Handbooks 6102 and 6500; VA Directives 6004, 6513, and 6517; and National Institute of Standards and Technology (NIST) standards, including Federal Information Processing Standards (FIPS). Users must ensure sensitive data is properly protected in compliance with all VA regulations. Prior to use of this technology, users should check with their supervisor, Information Security Officer (ISO), Facility Chief Information Officer (CIO), or local Office of Information and Technology (OI&T) representative to ensure that all actions are consistent with current VA policies and procedures prior to implementation.
Section 508 Information:
Decision: View Decisions

Decision Source: TRM Mgmt Group
Decision Process: One-VA TRM v20.4
Decision Date: 04/29/2020
Introduced By: TRMSP
Standards Body: National Institute of Standards and Technology (NIST)
- The information contained on this page is accurate as of the Decision Date (04/29/2020).