diff options
| author | Tianjia Zhang <tianjia.zhang@linux.alibaba.com> | 2022-12-01 20:58:18 +0800 |
|---|---|---|
| committer | Eric Biggers <ebiggers@google.com> | 2022-12-01 10:57:10 -0800 |
| commit | d209ce353a324601f9d3c1eee43b1f0df53021b3 (patch) | |
| tree | 361a64bad313746e51272369c9f9ed7680d83c64 | |
| parent | aa997990080877c3a6dab9f25609073816378b43 (diff) | |
blk-crypto: Add support for SM4-XTS blk crypto mode
SM4 is a symmetric cipher algorithm widely used in China. The SM4-XTS
variant is used to encrypt length-preserving data. This is the
mandatory algorithm in some special scenarios.
Add support for the algorithm to block inline encryption. This is needed
for the inlinecrypt mount option to be supported via
blk-crypto-fallback, as it is for the other fscrypt modes.
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20221201125819.36932-2-tianjia.zhang@linux.alibaba.com
| -rw-r--r-- | block/blk-crypto.c | 6 | ||||
| -rw-r--r-- | include/linux/blk-crypto.h | 1 |
2 files changed, 7 insertions, 0 deletions
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, }; |