Matches in DBpedia 2016-04 for { <http://wikidata.dbpedia.org/resource/Q1551743> ?p ?o }
Showing triples 1 to 18 of
18
with 100 triples per page.
- Q1551743 subject Q8661484.
- Q1551743 abstract "Grøstl is a cryptographic hash function submitted to the NIST hash function competition by Praveen Gauravaram, Lars Knudsen, Krystian Matusiewicz, Florian Mendel, Christian Rechberger, Martin Schläffer, and Søren S. Thomsen. Grøstl was chosen as one of the five finalists of the competition. It uses the same S-box as AES in a custom construction. The authors claim speeds of up to 21.4 cycles per byte on an Intel Core 2 Duo.According to the submission document, the name "Grøstl" is a multilingual play-on-words, referring to an Austrian dish that is very similar to hash (food).Like other hash functions in the MD5/SHA family, Grøstl divides the input into blocks and iteratively computes hi = f(hi−1, mi). However, Grøstl maintains a hash state at least twice the size of the final output (512 or 1024 bits), which is only truncated at the end of hash computation.The compression function f is based on a pair of 256- or 512-bit permutation functions P and Q, and is defined as: f(h, m) = P(h ⊕ m) ⊕ Q(m) ⊕ hThe permutation functions P and Q are heavily based on the Rijndael (AES) block cipher, but operate on 8×8 or 8×16 arrays of bytes, rather than 4×4. Like AES, each round consists of four operations: AddRoundKey (the Grøstl round keys are fixed, but differ between P and Q) SubBytes (this uses the Rijndael S-box, allowing sharing with AES implementations) ShiftBytes (expanded compared to AES, this also differs between P and Q, and 512- and 1024-bit versions) MixColumns (using an 8×8 matrix rather than Rijndael's 4×4)Unlike Rijndael, all rounds are identical and there is no final AddRoundKey operation. 10 rounds are recommended for the 512-bit permutation, and 14 rounds for the 1024-bit version.The final double-width hash receives a final output transformation of Ω(h) = h ⊕ P(h)and is then truncated to the desired width. This is equivalent to applying a final iteration of the compression function using an all-zero message block m, followed by a (cryptographically insignificant) exclusive-or with the fixed constant Q(0).".
- Q1551743 wikiPageExternalLink index.php?id=source_codes.
- Q1551743 wikiPageExternalLink www.groestl.info.
- Q1551743 wikiPageWikiLink Q1208241.
- Q1551743 wikiPageWikiLink Q1479399.
- Q1551743 wikiPageWikiLink Q15229223.
- Q1551743 wikiPageWikiLink Q190746.
- Q1551743 wikiPageWikiLink Q216334.
- Q1551743 wikiPageWikiLink Q2574238.
- Q1551743 wikiPageWikiLink Q389463.
- Q1551743 wikiPageWikiLink Q399981.
- Q1551743 wikiPageWikiLink Q477202.
- Q1551743 wikiPageWikiLink Q5198200.
- Q1551743 wikiPageWikiLink Q748364.
- Q1551743 wikiPageWikiLink Q8661484.
- Q1551743 comment "Grøstl is a cryptographic hash function submitted to the NIST hash function competition by Praveen Gauravaram, Lars Knudsen, Krystian Matusiewicz, Florian Mendel, Christian Rechberger, Martin Schläffer, and Søren S. Thomsen. Grøstl was chosen as one of the five finalists of the competition. It uses the same S-box as AES in a custom construction.".
- Q1551743 label "Grøstl".