Re: [PATCH] loop: fixing cryptoloop troubles.

[Pascal Brisset]

James Morris writes:
 > Ok, please take into account the case where src == dst.

OK, looks like there is a tricky interplay between algorithms and
transforms.  Cipher implementors will need documentation here, e.g.
"cia_encrypt and cia_decrypt are always called with src==dst UNLESS
we are running in CBC mode AND cia_ivsize!=0" (Please confirm...)

Anybody who tries to bypass the scatterlist-based api by exporting
and calling crypto_alg_lookup() (as I did) will get bitten badly.

-- Pascal

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