On Sat, Aug 30, 2008 at 09:55:00PM +1200, Michal Ludvig wrote: > > IIRC The first versions of VIA PadLock required the input data to be > aligned on 16-bytes boundaries and more importantly they always > finalised the hash. Therefore we had to collect all data before hashing > them. Hmm, the current manual states that it does a bswap on the input and therefore alignment isn't required. There is no mention about older processors requiring 16-byte alignment. Do you know if the old alignment requirement is documented anywhere? Or even better do you have a processor that enforces this? Not requiring the alignment would allow IPsec at least to avoid having to copy the data. > AFAIK Recent versions of PadLock don't insist on finalising the hash and > don't insist on input data alignment either and this workaround isn't > needed anymore. I don't know if VIA still sells their motherboard models > with the older CPUs or not. Interesting. I couldn't find anything in the manual about not requireing finalisation. Do you know where I can find out more about this? Thanks, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx> 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 majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
