Re: [PATCH v2 0/7] crypto: rc4 cleanup

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(adding Johannes back to the cover letter cc)

On Sun, 9 Jun 2019 at 13:55, Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> wrote:
>
> This is a follow-up to, and supersedes [0], which moved some WEP code from
> the cipher to the skcipher interface, in order to reduce the use of the bare
> cipher interface in non-crypto subsystem code.
>
> Since using the skcipher interface to invoke the generic C implementation of
> an algorithm that is known at compile time is rather pointless, this series
> moves those users to a new arc4 library interface instead, which is based on
> the existing code.
>
> Along the way, the arc4 cipher implementation is removed entirely, and only
> the ecb(arc4) code is preserved, which is used in a number of places in the
> kernel, and is known to be used by at least 'iwd' from user space via the
> algif_skcipher API.
>
> [0] https://lore.kernel.org/linux-crypto/20190607144944.13485-1-ard.biesheuvel@xxxxxxxxxx/
>
> Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
> Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
> Cc: Eric Biggers <ebiggers@xxxxxxxxxx>
>
> Ard Biesheuvel (7):
>   crypto: arc4 - refactor arc4 core code into separate library
>   net/mac80211: move WEP handling to ARC4 library interface
>   net/lib80211: move WEP handling to ARC4 library code
>   net/lib80211: move TKIP handling to ARC4 library code
>   crypto: arc4 - remove cipher implementation
>   ppp: mppe: switch to RC4 library interface
>   fs: cifs: switch to RC4 library interface
>
>  MAINTAINERS                        |   1 +
>  crypto/Kconfig                     |   4 +
>  crypto/arc4.c                      | 106 ++------------------
>  drivers/net/ppp/Kconfig            |   3 +-
>  drivers/net/ppp/ppp_mppe.c         |  92 ++---------------
>  fs/cifs/Kconfig                    |   2 +-
>  fs/cifs/cifsencrypt.c              |  50 +++------
>  include/crypto/arc4.h              |  13 +++
>  lib/Makefile                       |   2 +-
>  lib/crypto/Makefile                |   3 +
>  lib/crypto/libarc4.c               |  74 ++++++++++++++
>  net/mac80211/Kconfig               |   2 +-
>  net/mac80211/cfg.c                 |   3 -
>  net/mac80211/ieee80211_i.h         |   4 +-
>  net/mac80211/key.h                 |   1 +
>  net/mac80211/main.c                |  48 +--------
>  net/mac80211/mlme.c                |   2 -
>  net/mac80211/tkip.c                |   8 +-
>  net/mac80211/tkip.h                |   4 +-
>  net/mac80211/wep.c                 |  47 ++-------
>  net/mac80211/wep.h                 |   4 +-
>  net/mac80211/wpa.c                 |   4 +-
>  net/wireless/Kconfig               |   1 +
>  net/wireless/lib80211_crypt_tkip.c |  42 +++-----
>  net/wireless/lib80211_crypt_wep.c  |  43 ++------
>  25 files changed, 176 insertions(+), 387 deletions(-)
>  create mode 100644 lib/crypto/Makefile
>  create mode 100644 lib/crypto/libarc4.c
>
> --
> 2.20.1
>



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