| Message ID | 20221201125819.36932-2-tianjia.zhang@linux.alibaba.com (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
| Series | Add SM4 XTS symmetric algorithm for blk-crypto and fscrypt | expand |
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, };
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. Enable the algorithm in 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> --- block/blk-crypto.c | 6 ++++++ include/linux/blk-crypto.h | 1 + 2 files changed, 7 insertions(+)