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Message-Id: <20221125121630.87793-2-tianjia.zhang@linux.alibaba.com>
Date: Fri, 25 Nov 2022 20:16:29 +0800
From: Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
To: Eric Biggers <ebiggers@...nel.org>,
"Theodore Y. Ts o" <tytso@....edu>,
Jaegeuk Kim <jaegeuk@...nel.org>,
Jonathan Corbet <corbet@....net>, Jens Axboe <axboe@...nel.dk>,
Ard Biesheuvel <ardb@...nel.org>,
linux-fscrypt@...r.kernel.org, linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-block@...r.kernel.org
Cc: Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
Subject: [PATCH v3 1/2] blk-crypto: Add support for SM4-XTS blk crypto mode
SM4 is a symmetric algorithm widely used in China, and SM4-XTS is also
used to encrypt length-preserving data, these algoritms are mandatory
in many scenarios. This patch enables the use of SM4-XTS algorithm in
block inline encryption, and provides support for fscrypt.
Signed-off-by: Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
---
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,
};
--
2.24.3 (Apple Git-128)
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