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Re: [kitten] [EXTERNAL] Re: Question about AES mode in Kerberos

Luke Howard Bentata <lukeh@padl.com> Wed, 04 January 2023 23:16 UTC

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From: Luke Howard Bentata <lukeh@padl.com>
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Date: Thu, 05 Jan 2023 10:16:23 +1100
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Cc: Olga Kornievskaia <aglo@umich.edu>, "kitten@ietf.org" <kitten@ietf.org>
To: "Steve Syfuhs (AP)" <Steve.Syfuhs=40microsoft.com@dmarc.ietf.org>
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Subject: Re: [kitten] [EXTERNAL] Re: Question about AES mode in Kerberos
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Well, SMB 3.1.1 uses AES-256-GCM and AES-256-CCM ;)

https://learn.microsoft.com/en-us/windows-server/storage/file-server/smb-security

> On 5 Jan 2023, at 3:49 am, Steve Syfuhs (AP) <Steve.Syfuhs=40microsoft.com@dmarc.ietf.org> wrote:
> 
> Well, that's ultimately the question for a performance profiler to answer: does it even need offloading?
> 
> CPU AES instructions can do CBC rather cheaply.

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