Re: [PATCH] lib/crypto: mips: Drop optimized MD5 code

[Ard Biesheuvel]

On Thu, 26 Mar 2026, at 21:48, Eric Biggers wrote:
> MD5 is obsolete.  Continuing to maintain architecture-optimized
> implementations of MD5 is unnecessary and risky.  It diverts resources
> from the modern algorithms that are actually important.
>
> While there was demand for continuing to maintain the PowerPC optimized
> MD5 code to accommodate userspace programs that are misusing AF_ALG
> (https://lore.kernel.org/linux-crypto/c4191597-341d-4fd7-bc3d-13daf7666c41@xxxxxxxxxx/),
> no such demand has been seen for the MIPS Cavium Octeon optimized MD5
> code.  Note that this code runs on only one particular line of SoCs.
>
> Thus, let's drop it and focus effort on the more modern SHA algorithms,
> which already have optimized code for the same SoCs.
>
> Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
> ---
>
> This patch is targeting libcrypto-next
>
>  lib/crypto/Kconfig    |  1 -
>  lib/crypto/mips/md5.h | 65 -------------------------------------------
>  2 files changed, 66 deletions(-)
>  delete mode 100644 lib/crypto/mips/md5.h
>

Acked-by: Ard Biesheuvel <ardb@xxxxxxxxxx>