Re: [PATCH v4 0/2] Add SM4 XTS symmetric algorithm for blk-crypto and fscrypt

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Hi Eric,

On 12/2/22 3:29 AM, Eric Biggers wrote:
On Thu, Dec 01, 2022 at 08:58:17PM +0800, Tianjia Zhang wrote:
SM4 is widely used in China's data encryption software and hardware.
these algoritms are mandatory in many scenarios. This serial of
patches enables the SM4-XTS algorithm in blk-crypto and enables the
SM4-XTS/CTS algorithm in fscrypt to encrypt file content and filename.

v4 changes:
   - only allow the SM4 XTS/CTS algorithm in policy v2 for fscrypt
   - update git commit message

v3 change:
   - update git commit message

v2 change:
   - As Eric said, the new FSCRYPT_MODE is defined for the unused numbers 7 and 8

Tianjia Zhang (2):
   blk-crypto: Add support for SM4-XTS blk crypto mode
   fscrypt: Add SM4 XTS/CTS symmetric algorithm support

  Documentation/filesystems/fscrypt.rst |  1 +
  block/blk-crypto.c                    |  6 ++++++
  fs/crypto/keysetup.c                  | 15 +++++++++++++++
  fs/crypto/policy.c                    |  5 +++++
  include/linux/blk-crypto.h            |  1 +
  include/uapi/linux/fscrypt.h          |  2 ++
  6 files changed, 30 insertions(+)

Applied.  I don't think anyone should actually use this, but with the SM*
algorithms turning up everywhere these days, and people seemingly being totally
okay with that for some reason, I don't think it's fair for me to reject this.

- Eric

Thanks, this is really frustrating, still very grateful for your advice
and review.

Best regards,
Tianjia



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