Re: [TLS] Constant-time Algorithms

2021-05-18 Thread Martin Thomson
On Wed, May 19, 2021, at 01:58, David Benjamin wrote: > constant-time should be a default baseline requirement for implementing any > cryptographic primitive. Or put more generally, ... Avoiding side channels through value-independence should be a default baseline requirement for handling any s

Re: [TLS] Constant-time Algorithms

2021-05-18 Thread David Benjamin
I don't know of any list, but everything that deals with secrets has some constant-time portion. This applies to both long-lived and ephemeral secrets, and includes clients and servers. How practical an attack is depends on many factors, including the application itself, but I think we have ample e