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Search Search CSRC MENU Search Search Projects Publications Expand or Collapse Drafts for Public Comment All Public Drafts Final Pubs FIPS (standards) Special Publications (SP s ) IR (interagency/internal reports) CSWP (cybersecurity white papers) ITL Bulletins Project Descriptions Journal Articles Conference Papers Books Topics Expand or Collapse Security & Privacy Applications Technologies Sectors Laws & Regulations Activities & Products News & Updates Events Glossary About CSRC Expand or Collapse Computer Security Division Cryptographic Technology Software Security Group Hardware Security Group Security Engineering and Risk Management Applied Cybersecurity Division Cybersecurity and Privacy Applications National Cybersecurity Center of Excellence (NCCoE) National Initiative for Cybersecurity Education (NICE) Contact Us Information Technology Laboratory Computer Security Resource Center Publications NIST SP 800-131A Rev. 3 (Initial Public Draft) Transitioning the Use of Cryptographic Algorithms and Key Lengths Share to Facebook Share to X Share to LinkedIn Share ia Email Documentation Topics Date Published: October 21, 2024 Comments Due: December 4, 2024 (public comment period is CLOSED) Email Questions to: [email protected] Planning Note ( 01/17/2025 ): The file of public comments received has been updated. Author(s) Elaine Barker (NIST) , Allen Roginsky (NIST) Announcement NIST provides cryptographic key management guidance for defining and implementing appropriate key-management procedures, using algorithms that adequately protect sensitive information, and planning for possible changes in the use of cryptography because of algorithm breaks or the availability of more powerful computing techniques. This publication provides guidance on transitioning to the use of stronger cryptographic keys and more robust algorithms. This revision proposes a) the retirement of ECB as a confidentiality mode of operation and the use of DSA for digital signature generation and b) a schedule for the retirement of SHA-1 and the 224-bit hash functions. This draft also discusses the transition from a security strength of 112 bits to a 128-bit security strength and to quantum-resistant algorithms for digital signatures and key establishment. NOTE: A call for patent claims is included on page iii of this draft. For additional information, see the Information Technology Laboratory (ITL) Patent Policy – Inclusion of Patents in ITL Publications . Abstract NIST provides cryptographic key management guidance for defining and implementing appropriate key-management procedures, using algorithms that adequately protect sensitive information, and planning for possible changes in the use of cryptography because of algorithm breaks or the availability of more powerful computing techniques. This publication provides guidance for transitions to the use of stronger cryptographic keys and more robust algorithms. NIST provides cryptographic key management guidance for defining and implementing appropriate key-management procedures, using algorithms that adequately protect sensitive information, and planning for possible changes in the use of cryptography because of algorithm breaks or the availability of... See full abstract NIST provides cryptographic key management guidance for defining and implementing appropriate key-management procedures, using algorithms that adequately protect sensitive information, and planning for possible changes in the use of cryptography because of algorithm breaks or the availability of more powerful computing techniques. This publication provides guidance for transitions to the use of stronger cryptographic keys and more robust algorithms. Hide full abstract Keywords cryptographic algorithm ; digital signature ; elliptic curves ; encryption ; entropy ; extendable output functions ; hash function ; key agreement ; key-derivation functions ; key encapsulation ; key transport ; key wrapping ; message authentication codes ; quantum-resistant algorithms ; random bit generation ; security strength ; transition Control Families None selected Documentation Publication: https://doi.org/10.6028/NIST.SP.800-131Ar3.ipd Download URL Supplemental Material: Public comments received (pdf) Document History: 10/21/24: SP 800-131A Rev. 3 (Draft) Topics Security and Privacy digital signatures , encryption , key management , message authentication , random number generation , secure hashing HEADQUARTERS 100 Bureau Drive Gaithersburg, MD 20899 X (link is external) facebook (link is external) linkedin (link is external) instagram (link is external) youtube (link is external) rss govdelivery (link is external) Want updates about CSRC and our publications? 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