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{{Short description|Set of cryptographic algorithms by the NSA}}
The '''Commercial National Security Algorithm Suite''' ('''CNSA''') is a set of cryptographic algorithms [[Promulgation|promulgated]] by the [[National Security Agency]] as a replacement for [[NSA Suite B Cryptography]] algorithms. It serves as the cryptographic base to protect US National Security Systems information up to the [[Classified information#Top_Secret_(TS)|top secret]] level, while the NSA plans for a transition to [[quantum-resistant cryptography]].<ref>{{Cite web|url=https://www.johndcook.com/blog/2019/05/23/nsa-recommendations/|title=NSA recommendations {{!}} algorithms to use until PQC|last=Cook|first=John|date=2019-05-23|website=www.johndcook.com|access-date=2020-02-28}}</ref><ref name=":0">{{Cite web|url=https://media.defense.gov/2022/Sep/07/2003071834/-1/-1/0/CSA_CNSA_2.0_ALGORITHMS_.PDF|title=Announcing the Commercial National Security Algorithm Suite 2.0|date=2022-09-07|website=media.defense.gov|language=en|access-date=2024-06-10}}</ref><ref>{{cite web|url=https://cryptome.org/2016/01/CNSA-Suite-and-Quantum-Computing-FAQ.pdf|title=CNSA Suite and Quantum Computing FAQ|website=cryptome.org|date=January 2016|access-date=24 July 2023}}</ref><ref>{{Cite web|url=https://www.cnss.gov/CNSS/issuances/Memoranda.cfm|title=Use of public standards for the secure sharing of information among national security systems, Advisory Memorandum 02-15 CNSS Advisory Memorandum Information Assurance 02-15|date=2015-07-31|website=Committee on National Security Systems|url-status=dead|archive-url=https://web.archive.org/web/20200228180443/https://www.cnss.gov/CNSS/issuances/Memoranda.cfm|archive-date=2020-02-28|access-date=2020-02-28}}</ref><ref>{{Cite web|url=https://apps.nsa.gov/iaarchive/programs/iad-initiatives/cnsa-suite.cfm|title=Commercial National Security Algorithm Suite|date=19 August 2015|website=apps.nsa.gov|archive-url=https://web.archive.org/web/20220218193742/https://apps.nsa.gov/iaarchive/programs/iad-initiatives/cnsa-suite.cfm|archive-date=2022-02-18|language=en|access-date=2020-02-28}}</ref><ref>{{Cite journal|url=https://tools.ietf.org/html/rfc8423|title=RFC 8423 - Reclassification of Suite B Documents to Historic Status|date=July 2018|website=tools.ietf.org|language=en|access-date=2020-02-28 |last1=Housley |first1=Russ |last2=Zieglar |first2=Lydia }}</ref>
[[File:CNSA 2p0 timeline.png|thumb|Timeline for the transition to CNSA 2.0]]
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