[cryptography] European report says many crypto protocols have problems

2013-10-31 Thread Sandy Harris
Cited in a comment on Schneier's blog: https://www.schneier.com/blog/archives/2013/10/nsa_eavesdroppi_2.html Register article with link to actual report: http://www.theregister.co.uk/2013/10/31/most_security_protocols_insecure_suggests_enisa/ ___ cryptog

Re: [cryptography] European report says many crypto protocols have problems

2013-11-03 Thread Peter Gutmann
Sandy Harris writes: >Cited in a comment on Schneier's blog: >https://www.schneier.com/blog/archives/2013/10/nsa_eavesdroppi_2.html > >Register article with link to actual report: >http://www.theregister.co.uk/2013/10/31/most_security_protocols_insecure_suggests_enisa/ The original paper was wri

Re: [cryptography] European report says many crypto protocols have problems

2013-11-03 Thread James A. Donald
On 2013-11-04 10:40, Peter Gutmann wrote: Beyond that, there are other problems with the recommendation. For example it strongly recommends DLP algorithms over RSA. DLP is great on a whiteboard but extremely brittle in practice, since the entire family has a distressing propensity to leak the p

Re: [cryptography] European report says many crypto protocols have problems

2013-11-04 Thread Paterson, Kenny
Peter, (Full disclosure: I was one of the external reviewers of this report.) I take your point that there is a gap between cryptography and security engineering, and I understand the gap well from first-hand experience, first from my time in industry and more recently as a consultant to industry

Re: [cryptography] European report says many crypto protocols have problems

2013-11-04 Thread yersinia
On Mon, Nov 4, 2013 at 1:40 AM, Peter Gutmann wrote: > Sandy Harris writes: > >>Cited in a comment on Schneier's blog: >>https://www.schneier.com/blog/archives/2013/10/nsa_eavesdroppi_2.html >> >>Register article with link to actual report: >>http://www.theregister.co.uk/2013/10/31/most_security_

Re: [cryptography] European report says many crypto protocols have problems

2013-11-04 Thread Ben Laurie
On 4 November 2013 09:51, yersinia wrote: > Nist recently posted a raccomandation very recently (IN DRAFT) > http://csrc.nist.gov/publications/drafts/800-52-rev1/draft_sp800_52_r1.pdf If you ignore the bits about FIPS-140 and SP800-90A, its not bad. But fairly obvious. It seems to be missing a c

Re: [cryptography] European report says many crypto protocols have problems

2013-11-04 Thread Nikos Fotiou
By no means I claim to be an expert, but what I feel is that ENISA's report is missing recommendations for TLS key exchange algorithms. I would except this report to recommend algorithms that achieve forward secrecy. In any case I found the report very comprehensive and well suited for an engineer.

Re: [cryptography] European report says many crypto protocols have problems

2013-11-04 Thread Krisztián Pintér
Peter Gutmann (at Monday, November 4, 2013, 1:40:26 AM): > Then it deprecates PKCS #1 v1.5 (which pretty much the entire > planet uses) because it doesn't have a security proof, while recommending a > bunch of exotic alternatives that more or less nothing uses. what is the purpose of academic re

Re: [cryptography] European report says many crypto protocols have problems

2013-11-06 Thread Peter Gutmann
"Paterson, Kenny" writes: >So what are we to do? Continue to recommend something that is >cryptographically dreadful simply because everybody is using it? Or to try to >kickstart the process of breaking with the past? My view is that the latter >is the right course of action. And a report like th

Re: [cryptography] European report says many crypto protocols have problems

2013-11-06 Thread James A. Donald
On 2013-11-06 21:11, Peter Gutmann wrote: I'm arguing for incremental upgrades to existing protocols, not greenfields developments. Observe email. You can't get there from here. It's probably too late to invent a "better TLS" or "better PGP" or "better S/MIME" now (although we can always do

Re: [cryptography] European report says many crypto protocols have problems

2013-11-06 Thread David Mercer
On Thu, Nov 7, 2013 at 2:02 AM, James A. Donald wrote: > On 2013-11-06 21:11, Peter Gutmann wrote: > >> I'm arguing for incremental upgrades to existing protocols, not >> greenfields >> developments. >> > > Observe email. > > You can't get there from here. > > > It's probably too late to invent