On Sat, May 23, 2015 at 04:35:36PM +0200, Boris Brezillon wrote: > > > Since all SG I get was always a multiple of 16 (AES BLOCK SIZE) it was a > > sort of confirmation. > > > > Herbert ? does am I right or a chunking test is missing for cbc(aes) in > > testmgr.h > > Okay, just sharing my vision of this thing (I'll let Herbert comment on > this aspect): I'd say that theoretically nothing prevents one from > splitting its sg list in chunks smaller than the block size, so I'd > say you should use the same trick for AES.
Indeed, you must be able to handle a block that straddles two SG entries. If the hardware is not capable then you have to linearise it by copying or use a fallback. I can't believe we don't have a generic test for this in testmgr. Cheers, -- Email: Herbert Xu <herb...@gondor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
