linux-kernel - Re: [PATCH RFC 0/2] crypto: Introduce Public Key Encryption API

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Message-ID: <5547D9A3.9060800@intel.com>
Date:	Mon, 04 May 2015 13:42:11 -0700
From:	Tadeusz Struk <tadeusz.struk@...el.com>
To:	Horia Geantă <horia.geanta@...escale.com>,
	herbert@...dor.apana.org.au
CC:	corbet@....net, keescook@...omium.org, qat-linux@...el.com,
	jwboyer@...hat.com, richard@....at, d.kasatkin@...sung.com,
	linux-kernel@...r.kernel.org, steved@...hat.com,
	dhowells@...hat.com, vgoyal@...hat.com, james.l.morris@...cle.com,
	jkosina@...e.cz, zohar@...ux.vnet.ibm.com, davem@...emloft.net,
	jdelvare@...e.de, linux-crypto@...r.kernel.org
Subject: Re: [PATCH RFC 0/2] crypto: Introduce Public Key Encryption API

Hi Horia,
On 05/04/2015 06:16 AM, Horia Geantă wrote:
>> 	int (*sign)(struct pke_request *pkereq);
>> > 	int (*verify)(struct pke_request *pkereq);
>> > 	int (*encrypt)(struct pke_request *pkereq);
>> > 	int (*decrypt)(struct pke_request *pkereq);
> Where would be the proper place for keygen operation?

This will need to be extended to support keygen.

> 
> AFAICT algorithms currently map to primitives + encoding methods, which
> is not flexible. For e.g. current RSA implementation hardcodes the
> PKCS1-v1_5 encoding method, making it hard to add OAEP(+) etc.
> 
> One solution would be to map algorithms to primitives only. Encoding
> methods need to be abstracted somehow, maybe using templates to wrap the
> algorithms.

So far there is only one rsa implementation in kernel and it is only used
by module signing code.
Later we can add templates or simply one can register "oaep-rsa" algorithm.

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