In August 2021, NIST’s Crypto Publication Review Board initiated a process to review NIST Special Publication (SP) 800-107 Revision 1, Recommendation for Applications Using Approved Hash Algorithms. SP 800-107 Rev. 1 discusses the security strengths of hash functions and provides recommendations on digital signatures, HMAC, hash-based key derivation functions, random number generation, and the truncation of hash functions. See the initial public comments received by NIST.
On June 8, 2022, NIST proposed the withdrawal of SP 800-107 Rev. 1 and called for comments on that decision proposal. See the decision proposal comments received by NIST.
After considering the received comments, NIST is planning to withdraw SP 800-107 Rev. 1. Since the publication of SP 800-107 Rev. 1 in 2012, NIST has published (or revised) multiple recommendations that cover hash functions in different applications in more detail (e.g., SP 800-90A/B/C, SP 800-56A/B/C, SP 800-131A, SP 800-133, SP 800-135). In order to keep specific use requirements for a primitive in their most relevant publications—and avoid duplicating them in a separate publication—NIST has decided to withdraw SP 800-107 Rev. 1.
NIST has moved the supplementary material currently in SP 800-107 Rev. 1 to NIST’s hash functions webpage. Next, NIST will move the requirements listed in SP 800-107 Rev.1 that are not currently addressed in other standards to a new Implementation Guidance (IG) developed by the Cryptographic Module Validation Program (CMVP). These requirements will again be considered when hash-function-related standards are revised. Once the new IG has been published, NIST will withdraw SP 800-107 Rev. 1.
Information about the review process is available at NIST's Crypto Publication Review Project.
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