SHA-2

SHA-2 (Secure Hash Algorithm 2) — kriptografik algoritmlar oilasi. AQSh Milliy xavfsizlik agentligi (inglizcha: National Security Agency, NSA) tomonidan 2001-yilda ishlab chiqilgan^[1]^[2].

$\operatorname {Ch} (E,F,G)=(E\land F)\oplus (\neg E\land G)$
     $\operatorname {Ma} (A,B,C)=(A\land B)\oplus (A\land C)\oplus (B\land C)$
     $\Sigma _{0}(A)=(A\!\ggg \!2)\oplus (A\!\ggg \!13)\oplus (A\!\ggg \!22)$
     $\Sigma _{1}(E)=(E\!\ggg \!6)\oplus (E\!\ggg \!11)\oplus (E\!\ggg \!25)$

Manbalar

↑ „On the Secure Hash Algorithm family“. 2016-yil 30-martda asl nusxadan arxivlangan. Qaraldi: 2020-yil 2-noyabr.(Wayback Machine saytida 2014-10-14 sanasida arxivlangan)
↑ Federal Register Notice 02-21599, Announcing Approval of FIPS Publication 180-2

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