Linux cryptographic layer development
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From: "Horia Geantă" <horia.geanta@freescale.com>
To: Tadeusz Struk <tadeusz.struk@intel.com>,
	Herbert Xu <herbert@gondor.apana.org.au>,
	Stephan Mueller <smueller@chronox.de>
Cc: linux-crypto@vger.kernel.org,
	"Tudor Ambăruș" <tudor.ambarus@freescale.com>
Subject: Re: [PATCH 0/3] AF_ALG interface for akcipher
Date: Wed, 22 Jul 2015 14:58:18 +0300	[thread overview]
Message-ID: <55AF855A.9000202@freescale.com> (raw)
In-Reply-To: <55AF19D0.5040700@intel.com>

On 7/22/2015 7:19 AM, Tadeusz Struk wrote:
> On 07/21/2015 06:32 PM, Herbert Xu wrote:
>> I think we should finish the conversion of the only in-kernel
>> user of RSA before we add the user-space interface.  Otherwise
>> this unnecessarily ties our hands to the current API.
>>
>> For example, do we want an SG interface for the input and output?
>> As it stands even if a hardware device came with SG support we
>> would not be able to use it.
>>
>> Tadeusz, can you confirm again that qat does not support SG with
>> respect to RSA input and output?
> 
> No, it doesn't. Even if we would add SG support on the API it will
> need to be copied into contiguous buffers before it is sent to the HW.

OTOH, caam has SG support for all PK operations, including rsa-encrypt,
rsa-decrypt primitives.
We are working at upstreaming - aligning our internal caam-pkc with
akcipher.

Please consider designing a flexible AF_ALG interface, as Stephan suggested.

Thanks,
Horia

  parent reply	other threads:[~2015-07-22 12:32 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-21 22:12 [PATCH 0/3] AF_ALG interface for akcipher Stephan Mueller
2015-07-21 22:12 ` [PATCH 1/3] crypto: af_alg - add sig gen / verify API Stephan Mueller
2015-07-21 22:13 ` [PATCH 2/3] crypto: algif_akcipher user space interface Stephan Mueller
2015-07-22 16:01   ` Tadeusz Struk
2015-07-22 18:55     ` Stephan Mueller
2015-07-22 22:04       ` Tadeusz Struk
2015-07-22 22:29         ` Stephan Mueller
2015-07-21 22:13 ` [PATCH 3/3] crypto: algif_akcipher - enable compilation Stephan Mueller
2015-07-22  1:32 ` [PATCH 0/3] AF_ALG interface for akcipher Herbert Xu
2015-07-22  4:19   ` Tadeusz Struk
2015-07-22  4:21     ` Herbert Xu
2015-07-22 11:58     ` Horia Geantă [this message]
2015-07-23  1:53       ` Herbert Xu
2015-07-23  5:14         ` Tadeusz Struk
2015-07-23  5:19           ` Herbert Xu
2015-07-23 10:16           ` Stephan Mueller
2015-07-22  7:14   ` Stephan Mueller

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