Re: [TLS] Data volume limits

2016-01-01 Thread Samuel Neves
On 01/01/2016 06:35 AM, Aaron Zauner wrote: > This might be a good time to point again to my existing AES-OCB > draft that hasn't really seen a lot of discussion nor love lately. > It expired but I've recently updated the draft (not yet uploaded > to IETF as I'm waiting for implementer feedback fro

Re: [TLS] Data volume limits

2016-01-01 Thread Samuel Neves
Quoting Aaron Zauner : On the other hand, after 2^60 OCB messages of 2^16 blocks (and thus 2^76 total blocks), a block collision is almost guaranteed to have happened, enabling the aforementioned forgeries. Sure. Would you see any way to improve this situation in the draft, i.e. give implement

Re: [TLS] Deprecating TLS 1.0, 1.1 and SHA1 signature algorithms

2016-01-11 Thread Samuel Neves
On 12/01/2016 02:03, Watson Ladd wrote: > However, free-start collisions have been found, as have ways to modify > constants in the SHA-1 IV to get collisions. To be clear, the research into maliciously altering SHA-1 to make collisions easier changed the K_i constants added during the rounds, no