NISTs motivering till SHA-3-finalisterna

För ett par veckor sedan publicerade NIST ett dokument som sammanfattar status för SHA-3 tävlingen, hur NIST utvärderat och bedömt alla kandidater samt ger NISTs motivering till de fem finalister man valt ut och de man inte valde ut. För de fem finalisterna skriver NIST följande:

BLAKE

BLAKE was selected as a finalist, due to its high security margin, good performance in software,
and its simple and clear design.

Grøstl

Grøstl was selected as a finalist because of its well-understood design and solid performance,
especially in hardware. While Grøstl’s security margin is not ideal, NIST views it in light of the extensive amount of cryptanalysis that has been published, both on Grøstl itself and the larger AES structure on which Grøstl is based. Due to the large amount of existing cryptanalysis, NIST feels that future results are less likely to dramatically narrow Grøstl’s security margin than that of the other candidates.

JH

JH was selected as a finalist because of its solid security margin, good all-around performance,
and innovative design.

Keccak

Keccak was selected as a finalist, mainly due to its high security margin, its high throughput and
throughput-to-area ratio and the simplicity of its design.

Skein

Skein was selected as a finalist, mainly due to its high security margin and speed in software.

Mer info om respektive kandidat, hur dom utvärderats och bedömts finns i dokumentet. Och förhoppningsvis blir det som NIST skriver i dokumentet – att vi får nya, riktigt bra hashfunktioner i 2012.

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