SHA-2

AcronymDefinition
SHA-2Secure Hashing Algorithm 2
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References in periodicals archive ?
Tyrimu tikslas--istirti SHA-2 kriptografines maisos funkcijos skaiciavimo sparta programuojamos logikos integriniuose grandynuose.
Skaiciavimu sparta itakoja sintezuotu SHA-2 IP bloku kiekis kiekviename tirtame programuojamos logikos integriniame grandyne.
Trecio eksperimento metu buvo tiriama sistema, turinti maksimalu skaiciu SHA-2 IP bloku esant maksimaliam taktiniam dazniui.
5CSEMA5F31 programuojamos logikos integriniam grandynui buvo sintezuojami tik 40 SHA-2 IP bloku, taciau sintezavimas truko apie para.
Norint pasiekti kuo didesne skaiciavimo sparta galima keisti du parametrus: taktini dazni ir SHA-2 IP bloku skaiciu.
As a concrete example, we briefly introduce SHA-2 (SHA-224, SHA-256, SHA-384, and SHA-512), one of the most important MD-family hash functions.
As concrete examples, we applied our attack to HMAC/NMAC based on MD4, MD5, and SHA-2. The results on HMAC/NMAC-SHA-2 are the first known key recovery attacks on them.
Murphy, and W P Marnane, "Differential power analysis of HMAC based on SHA-2, and countermeasures," in Advances in Cryptology, vol.
of injected injected faults faults HMAC-MD4 [n/3] NMAC-MD4 2 x [n/3] HMAC-MD5 [n/3] NMAC-MD5 2 x [n/3] HMAC-SHA-224 [n/3] NMAC-SHA-224 [n/3] + [n/2] HMAC-SHA-256 [n/3] NMAC-SHA-256 2 x [n/3] HMAC-SHA-384 [n/3] NMAC-SHA-384 [n/3] + n HMAC-SHA-512 [n/3] NMAC-SHA-512 2 x [n/3] TABLE 2: Parameters of MD4, MD5 and SHA-2. Hash Message Chaining Hash Step Word function block value value function size MD4 512 bits 128 bits 128 bits 48 steps 32 bits MD5 512 bits 128 bits 128 bits 64 steps 32 bits SHA-224 512 bits 256 bits 224 bits 64 steps 32 bits SHA-256 512 bits 256 bits 256 bits 64 steps 32 bits SHA-384 1024 bits 512 bits 384 bits 80 steps 64 bits SHA-512 1024 bits 512 bits 512 bits 80 steps 64 bits TABLE 3: Recovery of ([K.sub.1,0], [K.sub.1,1], [K.sub.1,2]).