beevik / nts Goto Github PK

Hi Brett Vickers

I hope you don't mind me reaching out here.

Great to see that you are working on a NTS implementation in Go.
We are also working on NTS in Go, although slightly modified for the
SCION internet architecture.
https://github.com/marcfrei/scion-time

First I wanted to let you know some insights we gained about
AES_SIV_CMAC_256.
As you probably have noticed it is not supported by Go Crypto or Googles
Tink.
We therefore also started by using SIV-GO. It however has an issue when
using the assembly instructions on x86 machines. There already exists an
issue for the error that we also encountered. There does not seem to be
any more development that would fix the issue.

We then went looking for alternatives and found the archived
https://github.com/miscreant/miscreant.go
It does not have the same issue and it is more efficient (tested on ARM
machines).

Do you have any thoughts on SIV-GO or plans to implement
AES_SIV_CMAC_256 yourself?

Thank you and best regards
Aaron