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Date:   Mon, 07 Dec 2020 08:24:32 +0000
From:   David Howells <>
To:     Herbert Xu <>
Cc:, Ard Biesheuvel <>,
        Bruce Fields <>,
        Chuck Lever <>,
        CIFS <>,
        Linux NFS Mailing List <>,
        "open list:BPF JIT for MIPS (32-BIT AND 64-BIT)" 
        Linux Kernel Mailing List <>,
        Trond Myklebust <>,
        Linux Crypto Mailing List <>,,
Subject: Re: Why the auxiliary cipher in gss_krb5_crypto.c?

Herbert Xu <> wrote:

> > Herbert recently made some changes for MSG_MORE support in the AF_ALG
> > code, which permits a skcipher encryption to be split into several
> > invocations of the skcipher layer without the need for this complexity
> > on the side of the caller. Maybe there is a way to reuse that here.
> > Herbert?
> Yes this was one of the reasons I was persuing the continuation
> work.  It should allow us to kill the special case for CTS in the
> krb5 code.
> Hopefully I can get some time to restart work on this soon.

In the krb5 case, we know in advance how much data we're going to be dealing
with, if that helps.


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