Re: [PATCH] crypto: mark cts(cbc(aes)) as FIPS allowed

From: Stephan Mueller
Date: Mon Nov 05 2018 - 04:02:33 EST


Am Sonntag, 4. November 2018, 11:05:24 CET schrieb Gilad Ben-Yossef:

Hi Gilad,

> As per Sp800-38A addendum from Oct 2010[1], cts(cbc(aes)) is
> allowed as a FIPS mode algorithm. Mark it as such.
>
> [1] https://csrc.nist.gov/publications/detail/sp/800-38a/addendum/final

There are several types of CTS approaches. Only three of those are listed in
the SP800-38A addendum. The source code only refers to some RFCs.

Did you check whether the CTS implementation matches one or more of the types
listed in the addendum? If yes, may I suggest to add a small statement in the
code noting this fact?

Thanks a lot.

Ciao
Stephan