From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754746AbcAMPGp (ORCPT ); Wed, 13 Jan 2016 10:06:45 -0500 Received: from bombadil.infradead.org ([198.137.202.9]:46024 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751052AbcAMPGn (ORCPT ); Wed, 13 Jan 2016 10:06:43 -0500 Message-ID: <1452697593.88154.49.camel@infradead.org> Subject: Re: [PATCH v2] crypto: AF_ALG - add support for keys/asymmetric-type From: David Woodhouse To: Tadeusz Struk , David Howells , Tadeusz Struk Cc: herbert@gondor.apana.org.au, smueller@chronox.de, linux-api@vger.kernel.org, marcel@holtmann.org, linux-kernel@vger.kernel.org, keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, zohar@linux.vnet.ibm.com Date: Wed, 13 Jan 2016 15:06:33 +0000 In-Reply-To: <569659AC.9070506@intel.com> References: <20151226155014.27615.14985.stgit@desktop.home> <10464.1452691882@warthog.procyon.org.uk> <569659AC.9070506@intel.com> Content-Type: multipart/signed; micalg="sha-1"; protocol="application/x-pkcs7-signature"; boundary="=-0tCAcBtt+Ath+7A0NAWW" X-Mailer: Evolution 3.18.3 (3.18.3-1.fc23) Mime-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-0tCAcBtt+Ath+7A0NAWW Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, 2016-01-13 at 06:05 -0800, Tadeusz Struk wrote: >=20 > I agree, ideally keyctl should do the job for all the cases and > request_key() should just return a key data. No, you can NOT RELY ON HAVING THE KEY DATA. It might be in hardware. You might have something which will perform sign/verify/encrypt/decrypt operations *with* the key at your request, but which can never just *give* you the key. Any crypto API which relies on *having* the key is fundamentally wrong. --=20 dwmw2 --=-0tCAcBtt+Ath+7A0NAWW Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIISjjCCBicw ggUPoAMCAQICAw3vNzANBgkqhkiG9w0BAQUFADCBjDELMAkGA1UEBhMCSUwxFjAUBgNVBAoTDVN0 YXJ0Q29tIEx0ZC4xKzApBgNVBAsTIlNlY3VyZSBEaWdpdGFsIENlcnRpZmljYXRlIFNpZ25pbmcx ODA2BgNVBAMTL1N0YXJ0Q29tIENsYXNzIDEgUHJpbWFyeSBJbnRlcm1lZGlhdGUgQ2xpZW50IENB MB4XDTE1MDUwNTA5NDM0MVoXDTE2MDUwNTA5NTMzNlowQjEcMBoGA1UEAwwTZHdtdzJAaW5mcmFk ZWFkLm9yZzEiMCAGCSqGSIb3DQEJARYTZHdtdzJAaW5mcmFkZWFkLm9yZzCCASIwDQYJKoZIhvcN AQEBBQADggEPADCCAQoCggEBAMkbm9kPbx1j/X4RVyf/pPKSYwelcco69TvnQQbKM8m8xkWjXJI1 jpJ1jMaGUZGFToINMSZi7lZawUozudWbXSKy1SikENSTJHffsdRAIlsp+hR8vWvjsKUry6sEdqPG doa5RY7+N4WRusWZDYW/RRWE6i9EL9qV86CVPYqw22UBOUw4/j/HVGCV6TSB8yE5iEwhk/hUuzRr 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