tree b40dfae8fa170ebdc92fdcfeb3000c84d6203645
parent 5aaff0c8f7dd3515c9f1ca57f86463f30779acc7
author Rik Snel <rsnel@cube.dyndns.org> 1190204593 +0800
committer David S. Miller <davem@sunset.davemloft.net> 1192060545 -0700

[CRYPTO] xts: XTS blockcipher mode implementation without partial blocks

XTS currently considered to be the successor of the LRW mode by the IEEE1619
workgroup. LRW was discarded, because it was not secure if the encyption key
itself is encrypted with LRW.

XTS does not have this problem. The implementation is pretty straightforward,
a new function was added to gf128mul to handle GF(128) elements in ble format.
Four testvectors from the specification
	http://grouper.ieee.org/groups/1619/email/pdf00086.pdf
were added, and they verify on my system.

Signed-off-by: Rik Snel <rsnel@cube.dyndns.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>