Maybe Skip SHA-3
Imperial Violet
MAY 30, 2017
In 2005 and 2006, a series of significant results were published against SHA-1 [ 1 ][ 2 ][ 3 ]. These repeated break-throughs caused something of a crisis of faith as cryptographers questioned whether we knew how to build hash functions at all. After all, many hash functions from the 1990's had not aged well [ 1 ][ 2 ]. In the wake of this, NIST announced ( PDF ) a competition to develop SHA-3 in order to hedge the risk of SHA-2 falling.
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