Re: Hash algorithm analysis

2018-09-18 Thread Joan Daemen
Dear all, when going over my todo list I was confronted with the mail of Dan Shumow on the successor of SHA-1 for git. I know the decision was made and it is not my intention to change it, but please see below some comments on Dan's arguments. In short, I argue below that SHA256 has no serious

Re: Hash algorithm analysis

2018-07-22 Thread Joan Daemen
Dear all, I wanted to react to some statements I read in this discussion. But first let me introduce myself. I'm Joan Daemen and I'm working in symmetric cryptography since 1988. Vincent Rijmen and I designed Rijndael that was selected to become AES and Guido Bertoni, Michael Peeters and Gilles

Re: RFC v3: Another proposed hash function transition plan

2017-09-30 Thread Joan Daemen
Dear Johannes, thanks for your response and taking the effort to express your concerns. Please see below for some feedback. On 30/09/17 00:33, Johannes Schindelin wrote: Hi Joan, On Fri, 29 Sep 2017, Joan Daemen wrote: if ever there was a SHA-2 competition, it must have been held inside

Re: RFC v3: Another proposed hash function transition plan

2017-09-29 Thread Joan Daemen
://keccak.team/2017/open_source_crypto.html Kind regards, Joan Daemen On 29/09/17 15:17, Johannes Schindelin wrote: Hi Gilles, On Tue, 19 Sep 2017, Gilles Van Assche wrote: On 19/09/17 00:16, Johannes Schindelin wrote: SHA-256 got much more cryptanalysis than SHA3-256 […]. I do not think