Re: [PATCH v2 1/2] crypto: use SM3 instead of SM3_256

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On Tue, 2021-10-19 at 18:04 +0800, Tianjia Zhang wrote:
> According to https://tools.ietf.org/id/draft-oscca-cfrg-sm3-01.html,
> SM3 always produces a 256-bit hash value and there are no plans for
> other length development, so there is no ambiguity in the name of sm3.
> 
> Suggested-by: James Bottomley <jejb@xxxxxxxxxxxxx>
> Signed-off-by: Tianjia Zhang <tianjia.zhang@xxxxxxxxxxxxxxxxx>
> ---
>  Documentation/security/keys/trusted-encrypted.rst | 2 +-
>  crypto/hash_info.c                                | 4 ++--
>  drivers/char/tpm/tpm2-cmd.c                       | 2 +-
>  include/crypto/hash_info.h                        | 2 +-
>  include/uapi/linux/hash_info.h                    | 3 ++-
>  security/keys/trusted-keys/trusted_tpm2.c         | 2 +-
>  6 files changed, 8 insertions(+), 7 deletions(-)
> 
> diff --git a/Documentation/security/keys/trusted-encrypted.rst b/Documentation/security/keys/trusted-encrypted.rst
> index 80d5a5af62a1..3292461517f6 100644
> --- a/Documentation/security/keys/trusted-encrypted.rst
> +++ b/Documentation/security/keys/trusted-encrypted.rst
> @@ -162,7 +162,7 @@ Usage::
>                       default 1 (resealing allowed)
>         hash=         hash algorithm name as a string. For TPM 1.x the only
>                       allowed value is sha1. For TPM 2.x the allowed values
> -                     are sha1, sha256, sha384, sha512 and sm3-256.
> +                     are sha1, sha256, sha384, sha512 and sm3.

You cannot remove sm3-256 from uapi.

/Jarkko





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