Hi Junio, On Thu, 14 Sep 2017, Junio C Hamano wrote: > Jonathan Nieder <jrnieder@xxxxxxxxx> writes: > > > In other words, a long lifetime for the hash absolutely is a design > > goal. Coping well with an unexpectedly short lifetime for the hash is > > also a design goal. > > > > If the hash function lasts 10 years then I am happy. > > Absolutely. When two functions have similar expected remaining life > and are equally widely supported, then faster is better than slower. > Otherwise our primary goal when picking the function from candidates > should be to optimize for its remaining life and wider availability. SHA-256 has been hammered on a lot more than SHA3-256. That would be a strong point in favor of SHA2. Ciao, Dscho