[RFC PATCH 0/3] move WEP implementation to skcipher interface

[Ard Biesheuvel <ard.biesheuvel@linaro.org>]

One of the issues that I would like to see addressed in the crypto API
is they way the cipher abstraction is used. In general, a cipher should
never be used directly, and so it would be much better to clean up the
existing uses of ciphers outside of the crypto subsystem itself, so that
we can make the cipher abstraction part of the internal API, only to
be used by templates or crypto drivers that require them as a callback.

As a first step, this series moves all users of the 'arc4' cipher to
the ecb(arc4) skcipher, which happens to be implemented by the same
driver, and is already a stream cipher, given that ARC4_BLOCK_SIZE
actually evaluates to 1.

Next step would be to switch the users of the 'des' and 'aes' ciphers
to other interfaces that are more appropriate, either ecb(...) or a
library interface, which may be more appropriate in some cases. In any
case, the end result should be that ciphers are no longer used outside
of crypto/ and drivers/crypto/

This series is presented as an RFC, since I am mostly interested in
discussing the above, but I prefer to do so in the context of actual
patches rather than an abstract discussion.

Ard Biesheuvel (3):
  net/mac80211: switch to skcipher interface for arc4
  lib80211/tkip: switch to skcipher interface for arc4
  lib80211/wep: switch to skcipher interface for arc4

 net/mac80211/ieee80211_i.h         |  6 +-
 net/mac80211/key.h                 |  1 +
 net/mac80211/tkip.c                |  8 +-
 net/mac80211/tkip.h                |  4 +-
 net/mac80211/wep.c                 | 81 +++++++++++++++-----
 net/mac80211/wep.h                 |  4 +-
 net/mac80211/wpa.c                 |  4 +-
 net/wireless/lib80211_crypt_tkip.c | 61 ++++++++++-----
 net/wireless/lib80211_crypt_wep.c  | 52 +++++++++----
 9 files changed, 153 insertions(+), 68 deletions(-)

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2.20.1