From patchwork Tue Nov 22 07:06:31 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "tianjia.zhang" X-Patchwork-Id: 13051963 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 15EEFC43219 for ; Tue, 22 Nov 2022 07:06:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232283AbiKVHGn (ORCPT ); Tue, 22 Nov 2022 02:06:43 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59496 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232278AbiKVHGn (ORCPT ); Tue, 22 Nov 2022 02:06:43 -0500 Received: from out30-44.freemail.mail.aliyun.com (out30-44.freemail.mail.aliyun.com [115.124.30.44]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 18C3A2CE3F; Mon, 21 Nov 2022 23:06:38 -0800 (PST) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R221e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018046049;MF=tianjia.zhang@linux.alibaba.com;NM=1;PH=DS;RN=11;SR=0;TI=SMTPD_---0VVR5qpT_1669100795; Received: from localhost(mailfrom:tianjia.zhang@linux.alibaba.com fp:SMTPD_---0VVR5qpT_1669100795) by smtp.aliyun-inc.com; Tue, 22 Nov 2022 15:06:36 +0800 From: Tianjia Zhang To: "Theodore Y. Ts o" , Jaegeuk Kim , Eric Biggers , Jonathan Corbet , Jens Axboe , Ard Biesheuvel , linux-fscrypt@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org Cc: Tianjia Zhang Subject: [PATCH v2 1/2] blk-crypto: Add support for SM4-XTS blk crypto mode Date: Tue, 22 Nov 2022 15:06:31 +0800 Message-Id: <20221122070632.21910-2-tianjia.zhang@linux.alibaba.com> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20221122070632.21910-1-tianjia.zhang@linux.alibaba.com> References: <20221122070632.21910-1-tianjia.zhang@linux.alibaba.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fscrypt@vger.kernel.org SM4 is a symmetric algorithm widely used in China, and SM4-XTS is also used to encrypt length-preserving data, this patch enables the use of SM4-XTS algorithm in block inline encryption, and provides support for fscrypt. Signed-off-by: Tianjia Zhang --- block/blk-crypto.c | 6 ++++++ include/linux/blk-crypto.h | 1 + 2 files changed, 7 insertions(+) diff --git a/block/blk-crypto.c b/block/blk-crypto.c index a496aaef85ba..e44709fc6a08 100644 --- a/block/blk-crypto.c +++ b/block/blk-crypto.c @@ -36,6 +36,12 @@ const struct blk_crypto_mode blk_crypto_modes[] = { .keysize = 32, .ivsize = 32, }, + [BLK_ENCRYPTION_MODE_SM4_XTS] = { + .name = "SM4-XTS", + .cipher_str = "xts(sm4)", + .keysize = 32, + .ivsize = 16, + }, }; /* diff --git a/include/linux/blk-crypto.h b/include/linux/blk-crypto.h index 69b24fe92cbf..26b1b71c3091 100644 --- a/include/linux/blk-crypto.h +++ b/include/linux/blk-crypto.h @@ -13,6 +13,7 @@ enum blk_crypto_mode_num { BLK_ENCRYPTION_MODE_AES_256_XTS, BLK_ENCRYPTION_MODE_AES_128_CBC_ESSIV, BLK_ENCRYPTION_MODE_ADIANTUM, + BLK_ENCRYPTION_MODE_SM4_XTS, BLK_ENCRYPTION_MODE_MAX, }; From patchwork Tue Nov 22 07:06:32 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "tianjia.zhang" X-Patchwork-Id: 13051964 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 103B2C4332F for ; Tue, 22 Nov 2022 07:06:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232297AbiKVHGr (ORCPT ); Tue, 22 Nov 2022 02:06:47 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59530 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231583AbiKVHGp (ORCPT ); Tue, 22 Nov 2022 02:06:45 -0500 Received: from out199-6.us.a.mail.aliyun.com (out199-6.us.a.mail.aliyun.com [47.90.199.6]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4887F2A97E; Mon, 21 Nov 2022 23:06:42 -0800 (PST) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R191e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018045170;MF=tianjia.zhang@linux.alibaba.com;NM=1;PH=DS;RN=11;SR=0;TI=SMTPD_---0VVR3yub_1669100796; Received: from localhost(mailfrom:tianjia.zhang@linux.alibaba.com fp:SMTPD_---0VVR3yub_1669100796) by smtp.aliyun-inc.com; Tue, 22 Nov 2022 15:06:37 +0800 From: Tianjia Zhang To: "Theodore Y. Ts o" , Jaegeuk Kim , Eric Biggers , Jonathan Corbet , Jens Axboe , Ard Biesheuvel , linux-fscrypt@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org Cc: Tianjia Zhang Subject: [PATCH v2 2/2] fscrypt: Add SM4 XTS/CTS symmetric algorithm support Date: Tue, 22 Nov 2022 15:06:32 +0800 Message-Id: <20221122070632.21910-3-tianjia.zhang@linux.alibaba.com> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20221122070632.21910-1-tianjia.zhang@linux.alibaba.com> References: <20221122070632.21910-1-tianjia.zhang@linux.alibaba.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fscrypt@vger.kernel.org SM4 is a symmetric algorithm widely used in China, this patch enables to use SM4-XTS mode to encrypt file content, and use SM4-CBC-CTS to encrypt filename. Signed-off-by: Tianjia Zhang --- Documentation/filesystems/fscrypt.rst | 1 + fs/crypto/keysetup.c | 15 +++++++++++++++ fs/crypto/policy.c | 4 ++++ include/uapi/linux/fscrypt.h | 2 ++ 4 files changed, 22 insertions(+) diff --git a/Documentation/filesystems/fscrypt.rst b/Documentation/filesystems/fscrypt.rst index 5ba5817c17c2..af27e7b2c74f 100644 --- a/Documentation/filesystems/fscrypt.rst +++ b/Documentation/filesystems/fscrypt.rst @@ -336,6 +336,7 @@ Currently, the following pairs of encryption modes are supported: - AES-256-XTS for contents and AES-256-CTS-CBC for filenames - AES-128-CBC for contents and AES-128-CTS-CBC for filenames +- SM4-XTS for contents and SM4-CTS-CBC for filenames - Adiantum for both contents and filenames - AES-256-XTS for contents and AES-256-HCTR2 for filenames (v2 policies only) diff --git a/fs/crypto/keysetup.c b/fs/crypto/keysetup.c index f7407071a952..24e55c95abc3 100644 --- a/fs/crypto/keysetup.c +++ b/fs/crypto/keysetup.c @@ -44,6 +44,21 @@ struct fscrypt_mode fscrypt_modes[] = { .security_strength = 16, .ivsize = 16, }, + [FSCRYPT_MODE_SM4_XTS] = { + .friendly_name = "SM4-XTS", + .cipher_str = "xts(sm4)", + .keysize = 32, + .security_strength = 16, + .ivsize = 16, + .blk_crypto_mode = BLK_ENCRYPTION_MODE_SM4_XTS, + }, + [FSCRYPT_MODE_SM4_CTS] = { + .friendly_name = "SM4-CTS", + .cipher_str = "cts(cbc(sm4))", + .keysize = 16, + .security_strength = 16, + .ivsize = 16, + }, [FSCRYPT_MODE_ADIANTUM] = { .friendly_name = "Adiantum", .cipher_str = "adiantum(xchacha12,aes)", diff --git a/fs/crypto/policy.c b/fs/crypto/policy.c index 46757c3052ef..8e69bc0c35cd 100644 --- a/fs/crypto/policy.c +++ b/fs/crypto/policy.c @@ -71,6 +71,10 @@ static bool fscrypt_valid_enc_modes_v1(u32 contents_mode, u32 filenames_mode) filenames_mode == FSCRYPT_MODE_AES_128_CTS) return true; + if (contents_mode == FSCRYPT_MODE_SM4_XTS && + filenames_mode == FSCRYPT_MODE_SM4_CTS) + return true; + if (contents_mode == FSCRYPT_MODE_ADIANTUM && filenames_mode == FSCRYPT_MODE_ADIANTUM) return true; diff --git a/include/uapi/linux/fscrypt.h b/include/uapi/linux/fscrypt.h index a756b29afcc2..47dbd1994bfe 100644 --- a/include/uapi/linux/fscrypt.h +++ b/include/uapi/linux/fscrypt.h @@ -26,6 +26,8 @@ #define FSCRYPT_MODE_AES_256_CTS 4 #define FSCRYPT_MODE_AES_128_CBC 5 #define FSCRYPT_MODE_AES_128_CTS 6 +#define FSCRYPT_MODE_SM4_XTS 7 +#define FSCRYPT_MODE_SM4_CTS 8 #define FSCRYPT_MODE_ADIANTUM 9 #define FSCRYPT_MODE_AES_256_HCTR2 10 /* If adding a mode number > 10, update FSCRYPT_MODE_MAX in fscrypt_private.h */