linux-kernel - Re: [PATCH v5 1/3] crypto: KEYS: convert public key and digsig asym to the akcipher api

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 11 Feb 2016 10:08:37 +0000
From:	David Howells <dhowells@...hat.com>
To:	Tadeusz Struk <tadeusz.struk@...el.com>
Cc:	dhowells@...hat.com, herbert@...dor.apana.org.au,
	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org,
	linux-crypto@...r.kernel.org, zohar@...ux.vnet.ibm.com
Subject: Re: [PATCH v5 1/3] crypto: KEYS: convert public key and digsig asym to the akcipher api

David Howells <dhowells@...hat.com> wrote:

> Tadeusz Struk <tadeusz.struk@...el.com> wrote:
> 
> > > Why didn't you put the RSA signature parsing - ie. where the OID and the other
> > > bits are checked - into crypto/rsa.c?
> > > 
> > 
> > Do you want to get rid of the crypto/asymmetric_keys/rsa.c completely?
> > I wanted to make the conversion churn as small as possible.
> > I can move it in a subsequent patch if you want.
> 
> I was thinking of getting rid of it completely, yes.
> 
> But I was wondering if you had some other motivation, such as keeping the
> crypto layer purely the mathematical operation.
> 
> It's an interesting question where to draw the line, actually.  The answer may
> hinge on what things like the TPM do.  I should ask the TPM folks.

Looking in the TPM emulator, the TPM_Sign operation indeed puts the wrappings
on, so this needs to go into the crypto layer.

David