Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1.1"

2019-05-07 Thread Martin Rex
Hubert Kario wrote: >> >> Thanks to Peter Gutmann for the summary: >> >> https://mailarchive.ietf.org/arch/msg/tls/g0MDCdZcHsvZefv4V8fssXMeEHs >> >> which you may have missed. > > yes, Joux paper also shows that attacking MD5||SHA1 is harder than attacking > SHA1 alone > > but that

Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1.1"

2019-05-07 Thread Hubert Kario
On Tuesday, 7 May 2019 01:57:30 CEST Martin Rex wrote: > Hubert Kario wrote: > > On Friday, 3 May 2019 16:56:54 CEST Martin Rex wrote: > >> Hubert Kario wrote: > >> > We've been over this Martin, the theoretical research shows that for > >> > Merkle- Damgård functions, combining them doesn't

Re: [TLS] WGLC for "Deprecating TLSv1.0 and TLSv1.1"

2019-05-07 Thread Peter Gutmann
David Benjamin writes: >It meant bugs like OpenSSL's get papered over with SHA-1 That affects a whole lot more than just OpenSSL, a bit like ECDSA means P256 so hash means SHA-1. Try switching to SHA-2 (in non-TLS usage) and you'll find all the implementations that simply default to SHA-1, or,