#keccak

NIST SHA-3 Cryptographic Hash Standard has been released
August 5, 2015

http://media.tumblr.com/tumblr_m2xq19lCge1qc9lhz.gif

▻http://www.nist.gov/itl/csd/201508_sha3.cfm

SHA-3 is very different from SHA-2 in design," says NIST’s Shu-jen Chang. "It doesn’t replace SHA-2, which has not shown any problem, but offers a backup. It takes years to develop a new standard, and we wanted to be prepared in case problems do occur.

SHA-3 took 9 years to develop.

The document can be found here:

SHA-3 Standard: Permutation-Based Hash and Extendable-Output Functions

▻http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.202.pdf

The SHA-3 family defined in FIPS 202 consists of four cryptographic hash functions based on an instance of KECCAK, called SHA3-224, SHA3-256, SHA3-384, and SHA3-512, and two extendable-output functions (XOFs), called SHAKE128 and SHAKE256.

The previous standard FIPS 180-4 defined the SHA-2 suite and SHA-1, the latter which now is considered obsolete and being phased out.
FIPS 180-4 has also been updated:

▻http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.180-4.pdf

KECCAK:
▻http://keccak.noekeon.org

FIPS = Information Processing Standard
#cryptography
#information_security
#KECCAK
#SHA-3

« TRS-80 With A Keccak Sponge Cake

de Jean-Marie Chauvet

The subject of this paper, an improbable implementation of
a recently standardized cryptographic hash function on a thirty-five-year-
old microcomputer, may strike some as unusual and recreative at best.
In the tedious discipline of the process, however, lessons were learned in
implementation trade-offs for basic cryptographic primitives which may
prove interesting in the current context of securing (small to nano) ma-
chine to machine communications. More importantly, that such insights
might stem out of revisiting how earlier computing platforms relate to
the code written on them to cast a distant light on modern connections of
code to material, historical and contextual factors certainly illuminates
the joys of retrocomputing. »

▻https://eprint.iacr.org/2013/736.pdf

La mise en œuvre d’un algorithme de programmation moderne sur un #TRS-80... Code en assembleur et en BASIC

#cryptographie #geek #nostalgie #rétroinformatique #keccak