Re: [PATCH] fscrypt: Use aes_ecb_encrypt() for v1 key derivation

[Eric Biggers <ebiggers@kernel.org>]

On Mon, Aug 31, 2026 at 12:24:11PM -0700, Eric Biggers wrote:
> Now that there's a library function aes_ecb_encrypt(), use it instead of
> a loop of aes_encrypt() calls.
> 
> Note that the use of AES-ECB here is purely for the key derivation
> function used by the deprecated v1 encryption policies.  v2 encryption
> policies use HKDF-SHA512 instead.  Nevertheless, the original version
> has to continue to be supported for backwards compatibility.
> 
> Signed-off-by: Eric Biggers <ebiggers@kernel.org>
> ---
>  fs/crypto/Kconfig       | 2 +-
>  fs/crypto/keysetup_v1.c | 5 ++---
>  2 files changed, 3 insertions(+), 4 deletions(-)

Applied to https://git.kernel.org/pub/scm/fs/fscrypt/linux.git/log/?h=for-next

- Eric