On Mon, Aug 31, 2020 at 06:16:42PM +0300, Ard Biesheuvel wrote: > RC4 hasn't aged very well, and is a poor fit for the skcipher API so it > would be good if we could get rid of the ecb(arc4) drivers in the kernel > at some point in the future. This prevents new users from creeping in, and > allows us to improve the skcipher API without having to care too much about > obsolete algorithms that may be difficult to support going forward. > > So let's get rid of any remaining in-kernel users, either by switching them > to the arc4 library API (for cases which simply cannot change algorithms, > e.g., WEP), or dropping the code entirely. Also remove the remaining h/w > accelerated implementations, and mark the generic s/w implementation as > obsolete in Kconfig. > > Changes since v2: > - depend on CRYPTO_USER_API not CRYPTO_USER > - rename CRYPTO_USER_ENABLE_OBSOLETE to CRYPTO_USER_API_ENABLE_OBSOLETE for > clarity > > Changes since RFC [0]: > - keep ecb(arc4) generic C implementation, and the associated test vectors, > but print a warning about ecb(arc4) being obsolete so we can identify > remaining users > - add a Kconfig option to en/disable obsolete algorithms that are only kept > around to prevent breaking users that rely on it via the socket interface > - add a patch to clean up some bogus Kconfig dependencies > - add acks to patches #1, #2 and #3 > > [0] https://lore.kernel.org/driverdev-devel/20200702101947.682-1-ardb@xxxxxxxxxx/ > > Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> > Cc: "David S. Miller" <davem@xxxxxxxxxxxxx> > Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > Cc: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx> > Cc: Anna Schumaker <anna.schumaker@xxxxxxxxxx> > Cc: "J. Bruce Fields" <bfields@xxxxxxxxxxxx> > Cc: Chuck Lever <chuck.lever@xxxxxxxxxx> > Cc: Eric Biggers <ebiggers@xxxxxxxxxx> > Cc: Arnd Bergmann <arnd@xxxxxxxx> > Cc: linux-crypto@xxxxxxxxxxxxxxx > Cc: netdev@xxxxxxxxxxxxxxx > Cc: devel@xxxxxxxxxxxxxxxxxxxx > Cc: linux-nfs@xxxxxxxxxxxxxxx > > Ard Biesheuvel (7): > staging/rtl8192e: switch to RC4 library interface > staging/rtl8192u: switch to RC4 library interface > SUNRPC: remove RC4-HMAC-MD5 support from KerberosV > crypto: n2 - remove ecb(arc4) support > crypto: bcm-iproc - remove ecb(arc4) support > net: wireless: drop bogus CRYPTO_xxx Kconfig selects > crypto: arc4 - mark ecb(arc4) skcipher as obsolete > > crypto/Kconfig | 10 + > crypto/arc4.c | 10 + > drivers/crypto/bcm/cipher.c | 96 +----- > drivers/crypto/bcm/cipher.h | 1 - > drivers/crypto/bcm/spu.c | 23 +- > drivers/crypto/bcm/spu.h | 1 - > drivers/crypto/bcm/spu2.c | 12 +- > drivers/crypto/bcm/spu2.h | 1 - > drivers/crypto/n2_core.c | 46 --- > drivers/net/wireless/intel/ipw2x00/Kconfig | 4 - > drivers/net/wireless/intersil/hostap/Kconfig | 4 - > drivers/staging/rtl8192e/Kconfig | 4 +- > drivers/staging/rtl8192e/rtllib_crypt_tkip.c | 70 +---- > drivers/staging/rtl8192e/rtllib_crypt_wep.c | 72 +---- > drivers/staging/rtl8192u/Kconfig | 1 + > .../rtl8192u/ieee80211/ieee80211_crypt_tkip.c | 81 +---- > .../rtl8192u/ieee80211/ieee80211_crypt_wep.c | 64 +--- > include/linux/sunrpc/gss_krb5.h | 11 - > include/linux/sunrpc/gss_krb5_enctypes.h | 9 +- > net/sunrpc/Kconfig | 1 - > net/sunrpc/auth_gss/gss_krb5_crypto.c | 276 ------------------ > net/sunrpc/auth_gss/gss_krb5_mech.c | 95 ------ > net/sunrpc/auth_gss/gss_krb5_seal.c | 1 - > net/sunrpc/auth_gss/gss_krb5_seqnum.c | 87 ------ > net/sunrpc/auth_gss/gss_krb5_unseal.c | 1 - > net/sunrpc/auth_gss/gss_krb5_wrap.c | 65 +---- > 26 files changed, 97 insertions(+), 949 deletions(-) All applied. Thanks. -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
