From patchwork Thu Dec 2 15:23:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 12652795 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B5B11C43217 for ; Thu, 2 Dec 2021 15:24:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358939AbhLBP1d (ORCPT ); Thu, 2 Dec 2021 10:27:33 -0500 Received: from smtp-out2.suse.de ([195.135.220.29]:42080 "EHLO smtp-out2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1358938AbhLBP1c (ORCPT ); Thu, 2 Dec 2021 10:27:32 -0500 Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id 9A9B71FDFC; Thu, 2 Dec 2021 15:24:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1638458648; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=3jrv8XXfzAYeFjpUwXdrOdb6w3FpaD0XbnQueuej7IU=; b=UigLECO3ezIGusjqzcpDNd788/GNTSui1hfE3raDsejYUyCXQdSl/k8e59SxZzioy9zank 0paZFZ5q6pL5DcRZHfY0Y74rq+3AJ7Ai13bCt4cX9ribk9knDR/3IhXnxkD7iV0DLn8wai m+poG4fo0R/5eWdMIlnUdeLe2VcU0u8= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1638458648; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=3jrv8XXfzAYeFjpUwXdrOdb6w3FpaD0XbnQueuej7IU=; b=3uPFjB+ZL9MGblVoMQMimn8eAlw2F1Ae6st+d0T4PTYk8bdHdQpHHratiSE/US26+wQ6xV j2dtxavVV59MqSAg== Received: from adalid.arch.suse.de (adalid.arch.suse.de [10.161.8.13]) by relay2.suse.de (Postfix) with ESMTP id DFFF1A3B8A; Thu, 2 Dec 2021 15:24:07 +0000 (UTC) Received: by adalid.arch.suse.de (Postfix, from userid 16045) id 1B6C55191DE8; Thu, 2 Dec 2021 16:24:07 +0100 (CET) From: Hannes Reinecke To: Sagi Grimberg Cc: Christoph Hellwig , Keith Busch , linux-nvme@lists.infradead.org, linux-crypto@vger.kernel.org, Hannes Reinecke Subject: [PATCHv8 00/12] nvme: In-band authentication support Date: Thu, 2 Dec 2021 16:23:46 +0100 Message-Id: <20211202152358.60116-1-hare@suse.de> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Hi all, recent updates to the NVMe spec have added definitions for in-band authentication, and seeing that it provides some real benefit especially for NVMe-TCP here's an attempt to implement it. The ffdhe implementation given here is preliminary; there is a patchset from Nicolai Stange to implement FFDHE as a 'real' crypto algorithm, and also implements ephemeral keys for in-kernel DH. Once that is merged I'll be updating this patchset. Also note that this is just for in-band authentication. Secure concatenation (ie starting TLS with the negotiated parameters) is not implemented; one would need to update the kernel TLS implementation for this, which at this time is beyond scope. The nvme-cli support has already been merged; please use the latest nvme-cli git repository to build the most recent version. A copy of this patchset can be found at git://git.kernel.org/pub/scm/linux/kernel/git/hare/scsi-devel branch auth.v8 As usual, comments and reviews are welcome. Changes to v7: - Space out hash list and dhgroup list in nvme negotiate data to be conformant with the spec - Update sequence number handling to start with a random value and ignore '0' as mandated by the spec - Update nvme_auth_generate_key to return the key as suggested by Sagi - Add nvmet_parse_fabrics_io_cmd() as suggested by hch Changes to v6: - Use 'u8' for DH group id and hash id - Use 'struct nvme_dhchap_key' - Rename variables to drop 'DHCHAP' - Include reviews from Chaitanya Changes to v5: - Unify nvme_auth_generate_key() - Unify nvme_auth_extract_key() - Fixed bug where re-authentication with wrong controller key would not fail - Include reviews from Sagi Changes to v4: - Validate against blktest suite - Fixup base64 decoding - Transform secret with correct hmac algorithm Changes to v3: - Renamed parameter to 'dhchap_ctrl_key' - Fixed bi-directional authentication - Included reviews from Sagi - Fixed base64 algorithm for transport encoding Changes to v2: - Dropped non-standard algorithms - Reworked base64 based on fs/crypto/fname.c - Fixup crash with no keys Changes to the original submission: - Included reviews from Vladislav - Included reviews from Sagi - Implemented re-authentication support - Fixed up key handling Hannes Reinecke (12): crypto: add crypto_has_shash() crypto: add crypto_has_kpp() crypto/ffdhe: Finite Field DH Ephemeral Parameters lib/base64: RFC4648-compliant base64 encoding nvme: add definitions for NVMe In-Band authentication nvme-fabrics: decode 'authentication required' connect error nvme: Implement In-Band authentication nvme-auth: Diffie-Hellman key exchange support nvmet: parse fabrics commands on io queues nvmet: Implement basic In-Band Authentication nvmet-auth: Diffie-Hellman key exchange support nvmet-auth: expire authentication sessions crypto/Kconfig | 8 + crypto/Makefile | 1 + crypto/ffdhe_helper.c | 880 +++++++++++++ crypto/kpp.c | 6 + crypto/shash.c | 6 + drivers/nvme/host/Kconfig | 12 + drivers/nvme/host/Makefile | 1 + drivers/nvme/host/auth.c | 1569 ++++++++++++++++++++++++ drivers/nvme/host/auth.h | 42 + drivers/nvme/host/core.c | 141 ++- drivers/nvme/host/fabrics.c | 83 +- drivers/nvme/host/fabrics.h | 7 + drivers/nvme/host/nvme.h | 31 + drivers/nvme/host/rdma.c | 1 + drivers/nvme/host/tcp.c | 1 + drivers/nvme/host/trace.c | 32 + drivers/nvme/target/Kconfig | 13 + drivers/nvme/target/Makefile | 1 + drivers/nvme/target/admin-cmd.c | 6 +- drivers/nvme/target/auth.c | 523 ++++++++ drivers/nvme/target/configfs.c | 138 ++- drivers/nvme/target/core.c | 15 + drivers/nvme/target/fabrics-cmd-auth.c | 534 ++++++++ drivers/nvme/target/fabrics-cmd.c | 55 +- drivers/nvme/target/nvmet.h | 75 +- include/crypto/ffdhe.h | 24 + include/crypto/hash.h | 2 + include/crypto/kpp.h | 2 + include/linux/base64.h | 16 + include/linux/nvme.h | 188 ++- lib/Makefile | 2 +- lib/base64.c | 103 ++ 32 files changed, 4503 insertions(+), 15 deletions(-) create mode 100644 crypto/ffdhe_helper.c create mode 100644 drivers/nvme/host/auth.c create mode 100644 drivers/nvme/host/auth.h create mode 100644 drivers/nvme/target/auth.c create mode 100644 drivers/nvme/target/fabrics-cmd-auth.c create mode 100644 include/crypto/ffdhe.h create mode 100644 include/linux/base64.h create mode 100644 lib/base64.c