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From: Dean Jenkins <djenkins@mvista.com>
To: list crypto <linux-crypto@vger.kernel.org>
Subject: Does ESP support 64 bit sequence numbering for authentication hash ?
Date: Wed, 14 Jan 2009 14:23:53 +0000	[thread overview]
Message-ID: <1231943033.7937.120.camel@libdev3.mvista.co.uk> (raw)

Hi,

Does ESP support 64 bit sequence numbering for use with the
authentication HMAC ?

I've looked at struct aead_givcrypt_request and it has a u64 seq member.
Does ESP populate this with a 64 bit sequence number ?

If 32 bit sequence numbering negotiated then how does the HMAC routine
know that it should not use the top 32 bits of seq ? Or is it simply
that if the top 32 bits are zero then the HMAC just uses the lower 32
bits ?

Thanks for any insight.

Regards,
Dean Jenkins
MontaVista Software


             reply	other threads:[~2009-01-14 14:23 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-01-14 14:23 Dean Jenkins [this message]
2009-01-15  5:56 ` Does ESP support 64 bit sequence numbering for authentication hash ? Herbert Xu
2009-09-01 12:09   ` Steffen Klassert
2009-09-01 12:18     ` Herbert Xu
2009-09-01 12:23     ` Alex Badea
2009-09-01 12:42       ` Steffen Klassert

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