From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.physik.uni-muenchen.de (mail.physik.uni-muenchen.de [192.54.42.129]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.saout.de (Postfix) with ESMTPS for ; Sat, 17 Jul 2010 13:10:18 +0200 (CEST) Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.physik.uni-muenchen.de (Postfix) with ESMTP id 81AA827ECF for ; Sat, 17 Jul 2010 13:10:18 +0200 (CEST) Received: from mail.physik.uni-muenchen.de ([127.0.0.1]) by localhost (mail.physik.uni-muenchen.de [127.0.0.1]) (amavisd-new, port 10024) with LMTP id V8VgAZe9TmKi for ; Sat, 17 Jul 2010 13:10:18 +0200 (CEST) Received: from [192.168.0.101] (ppp-93-104-98-134.dynamic.mnet-online.de [93.104.98.134]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.physik.uni-muenchen.de (Postfix) with ESMTP id 408A327E82 for ; Sat, 17 Jul 2010 13:10:18 +0200 (CEST) From: Christoph Anton Mitterer In-Reply-To: <20100717094646.GA8391@fancy-poultry.org> References: <20100717071313.GA7243@fancy-poultry.org> <20100717075820.GA3626@maude.comedia.it> <20100717094646.GA8391@fancy-poultry.org> Content-Type: multipart/signed; micalg="sha1"; protocol="application/x-pkcs7-signature"; boundary="=-OktlRqOaVVwdK2X1GCKg" Date: Sat, 17 Jul 2010 13:10:17 +0200 Message-ID: <1279365017.3289.26.camel@fermat.scientia.net> Mime-Version: 1.0 Subject: Re: [dm-crypt] Hybrid drives List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: dm-crypt@saout.de --=-OktlRqOaVVwdK2X1GCKg Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Sat, 2010-07-17 at 11:46 +0200, Heinz Diehl wrote: > As far as I understand, the SSD part of these hybrid drives is used as a > cache, which doesn't loose its data when powered off. The disc itself is > completely in encrypted state when off, but I'm quite curious what maybe > could happen to the SSD part. All is encrypted,.. expect those parts of the header which aren't encrypted anyways. The kernel encrypts everything at the (dm-crpyt) block layer,... "long" before this goes out to hardware,... so the hardware never sees anything that's unencrypted. > is it completely covered by the additional crypto layer, or is there some > internal transfer which happens "automatically" without being under > control of the crypto layer? As long as your CPU/bus is not hacked,... no ;) Cheer, Chris. --=-OktlRqOaVVwdK2X1GCKg Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIKnjCCBUsw ggQzoAMCAQICAimIMA0GCSqGSIb3DQEBBQUAMDYxCzAJBgNVBAYTAkRFMRMwEQYDVQQKEwpHZXJt YW5HcmlkMRIwEAYDVQQDEwlHcmlkS2EtQ0EwHhcNMTAwMjAyMTUzODQyWhcNMTEwMzA0MTUzODQy WjBTMQswCQYDVQQGEwJERTETMBEGA1UEChMKR2VybWFuR3JpZDEMMAoGA1UECxMDTE1VMSEwHwYD VQQDExhDaHJpc3RvcGggQW50b24gTWl0dGVyZXIwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEK AoIBAQDB2Qx+2tMdrECcbeWidmr8n6M307ZhmRkijL2L4fSfD0tq5dgd6/upKPl/yZszPA9uRnCa GJBX+AA5+3GXG9sL/zE88t7c1LdD1rJcO23OO3Z35bWj3zMzhiXFq+rlgqLTixeS4YjEJ45J58BQ nvdZW9enAwtF+loQguehemyOv7GTpsbTBzwBcrM2YOdX1DdFBdspvjv/zGbgA8qcVNqKPZ/j1Om0 nLwDK/q+5yUO4v1m50Y6ApgmGuH9+xCBwKiBhjwR575utKfIBoAYAAZ4GAO0RWB6tsXrLV6OTSj0 Cvx97+6FbI7btHtLDz62r3KJKHt3YVhLufPPurr6moKfAgMBAAGjggJEMIICQDAMBgNVHRMBAf8E AjAAMA4GA1UdDwEB/wQEAwIE8DAdBgNVHQ4EFgQU6mpOncVXSCbY9n7zHlYWcvVMAGcwXgYDVR0j BFcwVYAUxnXJKKzRC/w8/7m1HtNfO4BiEjShOqQ4MDYxCzAJBgNVBAYTAkRFMRMwEQYDVQQKEwpH ZXJtYW5HcmlkMRIwEAYDVQQDEwlHcmlkS2EtQ0GCAQAwOgYDVR0RBDMwMYEvY2hyaXN0b3BoLmFu dG9uLm1pdHRlcmVyQHBoeXNpay51bmktbXVlbmNoZW4uZGUwHwYDVR0SBBgwFoEUZ3JpZGthLWNh QGl3ci5memsuZGUwNQYDVR0fBC4wLDAqoCigJoYkaHR0cDovL2dyaWQuZnprLmRlL2NhL2dyaWRr YS1jcmwuZGVyMBoGA1UdIAQTMBEwDwYNKwYBBAGUNqssAQEBBTARBglghkgBhvhCAQEEBAMCBaAw TgYJYIZIAYb4QgENBEEWP0NlcnRpZmljYXRlIGlzc3VlZCB1bmRlciBDUC9DUFMgdi4gMS41IGF0 IGh0dHA6Ly9ncmlkLmZ6ay5kZS9jYTAkBglghkgBhvhCAQIEFxYVaHR0cDovL2dyaWQuZnprLmRl L2NhMDMGCWCGSAGG+EIBCAQmFiRodHRwOi8vZ3JpZC5memsuZGUvY2EvZ3JpZGthLWNwcy5wZGYw MwYJYIZIAYb4QgEDBCYWJGh0dHA6Ly9ncmlkLmZ6ay5kZS9jYS9ncmlka2EtY3JsLmRlcjANBgkq hkiG9w0BAQUFAAOCAQEAx4bax1WiHpkiGAtCHawUp7+4CJfRDnrRv5B477+h8ILTY0mzHNumC5Ru +RpnfUi4zcbFA8uEnKifTRFeZH6kflC+xhLfg2kiN00Qqy0+IvYcTYo/ZGUhKLV3Q22R8tKpTjuY o4svWK0PQoSgcrVccGp7ZzHknKAS3dZjQTSg5JXfeLKrh0JZVRQ2S3CaOGBzTb8hXPSP1iAJ3klw hAApYZux9NQmBlEW7DeK5DwKiny+dbuipMrXwASz4tgnI/s9wwEml8tGXjnQDbyz4uRMa2Xyrzg4 iq+vWHLUsRGC1Api5FsBfBVTQPqRE1isyk8rPYcBoDk7dirgswhHwcK97TCCBUswggQzoAMCAQIC AimIMA0GCSqGSIb3DQEBBQUAMDYxCzAJBgNVBAYTAkRFMRMwEQYDVQQKEwpHZXJtYW5HcmlkMRIw EAYDVQQDEwlHcmlkS2EtQ0EwHhcNMTAwMjAyMTUzODQyWhcNMTEwMzA0MTUzODQyWjBTMQswCQYD VQQGEwJERTETMBEGA1UEChMKR2VybWFuR3JpZDEMMAoGA1UECxMDTE1VMSEwHwYDVQQDExhDaHJp c3RvcGggQW50b24gTWl0dGVyZXIwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDB2Qx+ 2tMdrECcbeWidmr8n6M307ZhmRkijL2L4fSfD0tq5dgd6/upKPl/yZszPA9uRnCaGJBX+AA5+3GX G9sL/zE88t7c1LdD1rJcO23OO3Z35bWj3zMzhiXFq+rlgqLTixeS4YjEJ45J58BQnvdZW9enAwtF +loQguehemyOv7GTpsbTBzwBcrM2YOdX1DdFBdspvjv/zGbgA8qcVNqKPZ/j1Om0nLwDK/q+5yUO 4v1m50Y6ApgmGuH9+xCBwKiBhjwR575utKfIBoAYAAZ4GAO0RWB6tsXrLV6OTSj0Cvx97+6FbI7b tHtLDz62r3KJKHt3YVhLufPPurr6moKfAgMBAAGjggJEMIICQDAMBgNVHRMBAf8EAjAAMA4GA1Ud DwEB/wQEAwIE8DAdBgNVHQ4EFgQU6mpOncVXSCbY9n7zHlYWcvVMAGcwXgYDVR0jBFcwVYAUxnXJ KKzRC/w8/7m1HtNfO4BiEjShOqQ4MDYxCzAJBgNVBAYTAkRFMRMwEQYDVQQKEwpHZXJtYW5Hcmlk MRIwEAYDVQQDEwlHcmlkS2EtQ0GCAQAwOgYDVR0RBDMwMYEvY2hyaXN0b3BoLmFudG9uLm1pdHRl cmVyQHBoeXNpay51bmktbXVlbmNoZW4uZGUwHwYDVR0SBBgwFoEUZ3JpZGthLWNhQGl3ci5memsu ZGUwNQYDVR0fBC4wLDAqoCigJoYkaHR0cDovL2dyaWQuZnprLmRlL2NhL2dyaWRrYS1jcmwuZGVy MBoGA1UdIAQTMBEwDwYNKwYBBAGUNqssAQEBBTARBglghkgBhvhCAQEEBAMCBaAwTgYJYIZIAYb4 QgENBEEWP0NlcnRpZmljYXRlIGlzc3VlZCB1bmRlciBDUC9DUFMgdi4gMS41IGF0IGh0dHA6Ly9n cmlkLmZ6ay5kZS9jYTAkBglghkgBhvhCAQIEFxYVaHR0cDovL2dyaWQuZnprLmRlL2NhMDMGCWCG SAGG+EIBCAQmFiRodHRwOi8vZ3JpZC5memsuZGUvY2EvZ3JpZGthLWNwcy5wZGYwMwYJYIZIAYb4 QgEDBCYWJGh0dHA6Ly9ncmlkLmZ6ay5kZS9jYS9ncmlka2EtY3JsLmRlcjANBgkqhkiG9w0BAQUF AAOCAQEAx4bax1WiHpkiGAtCHawUp7+4CJfRDnrRv5B477+h8ILTY0mzHNumC5Ru+RpnfUi4zcbF A8uEnKifTRFeZH6kflC+xhLfg2kiN00Qqy0+IvYcTYo/ZGUhKLV3Q22R8tKpTjuYo4svWK0PQoSg crVccGp7ZzHknKAS3dZjQTSg5JXfeLKrh0JZVRQ2S3CaOGBzTb8hXPSP1iAJ3klwhAApYZux9NQm BlEW7DeK5DwKiny+dbuipMrXwASz4tgnI/s9wwEml8tGXjnQDbyz4uRMa2Xyrzg4iq+vWHLUsRGC 1Api5FsBfBVTQPqRE1isyk8rPYcBoDk7dirgswhHwcK97TGCAl8wggJbAgEBMDwwNjELMAkGA1UE BhMCREUxEzARBgNVBAoTCkdlcm1hbkdyaWQxEjAQBgNVBAMTCUdyaWRLYS1DQQICKYgwCQYFKw4D AhoFAKCB+TAYBgkqhkiG9w0BCQMxCwYJKoZIhvcNAQcBMBwGCSqGSIb3DQEJBTEPFw0xMDA3MTcx MTEwMTdaMCMGCSqGSIb3DQEJBDEWBBQcX9T6czLDZf23VJXMg7vIy+/PXTBLBgkrBgEEAYI3EAQx PjA8MDYxCzAJBgNVBAYTAkRFMRMwEQYDVQQKEwpHZXJtYW5HcmlkMRIwEAYDVQQDEwlHcmlkS2Et Q0ECAimIME0GCyqGSIb3DQEJEAILMT6gPDA2MQswCQYDVQQGEwJERTETMBEGA1UEChMKR2VybWFu R3JpZDESMBAGA1UEAxMJR3JpZEthLUNBAgIpiDANBgkqhkiG9w0BAQEFAASCAQApuEK0gg5sL4YA lYEcCCAJG3KiMkHMFYTy1VWvB5pC3rMRyZ8I/9vYrP4D7zs9fhB+Xmg+E5seFtxYSo0kL0hA3ygV rmuv1Ynr7VCe2FXlQNRSmAGOM5vLV54nr1tlslaRfBGEYYcCr3sCq8ugPniETRJAbjjxFkvY0/BH oOz+EKnrB41jVPYv6FAW+MibAwXgDXNUZ35SpB88E1gNLGO7Cyj14IEwEa+pRdCjOse3nKLFtAIi arGc4pbP6EWZDla8TTOeeSPm3J+nYzSMkOgOf9QhpNRwY/M+gip1P5Eg0flPiz9Rg7+wYeKBEX08 pnXM5SYMCS/RjQvwoQEsnhjjAAAAAAAA --=-OktlRqOaVVwdK2X1GCKg--