Linux cryptographic layer development
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From: Dimitrios Siganos <dimitris@siganos.org>
To: linux-crypto@vger.kernel.org
Subject: hmac(sha1)
Date: Wed, 03 Mar 2010 03:29:17 +0000	[thread overview]
Message-ID: <4B8DD78D.6080707@siganos.org> (raw)

Hi,

I am trying to write a hmac(sha1) algorithm and I have a few questions. 
I have a HW crypto accelerator that does the actual crypto work. I have 
already successfully implemented sha1 by creating a 
CRYPTO_ALG_TYPE_DIGEST algorithm.

1) Can I implement hmac(sha1) as a CRYPTO_ALG_TYPE_DIGEST algorithm 
(i.e. use very similar code to sha1)?

2) Do I need to create a CRYPTO_ALG_TYPE_HASH algorithm?

3) Is it possible to implement hmac(sha1) as both CRYPTO_ALG_TYPE_DIGEST 
and CRYPTO_ALG_TYPE_HASH?

4) If I use a CRYPTO_ALG_TYPE_HASH, I need to understand the scatterwalk 
api, is there any help on the subject?

Regards,
Dimitris


             reply	other threads:[~2010-03-03  3:35 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-03-03  3:29 Dimitrios Siganos [this message]
2010-03-03 20:17 ` hmac(sha1) Dimitrios Siganos
2010-03-03 22:59   ` hmac(sha1) Kim Phillips
2010-03-05  7:32 ` hmac(sha1) Herbert Xu
2010-03-05 16:17   ` hmac(sha1) Dimitrios Siganos
2010-03-09  3:08     ` hmac(sha1) Herbert Xu
2010-03-10  2:48       ` hmac(sha1) Dimitrios Siganos
2010-03-10  4:05         ` hmac(sha1) Herbert Xu

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