tree ffa28aaa4a45cfafabe679a6219a11dd404037a9
parent 3c08fee7b5ce471a7114478ac8c6e546787bd8c2
author Herbert Xu <herbert@gondor.apana.org.au> 1432192275 +0800
committer Herbert Xu <herbert@gondor.apana.org.au> 1432265156 +0800

crypto: echainiv - Add encrypted chain IV generator

This patch adds a new AEAD IV generator echainiv.  It is intended
to replace the existing skcipher IV generator eseqiv.

If the underlying AEAD algorithm is using the old AEAD interface,
then echainiv will simply use its IV generator.

Otherwise, echainiv will encrypt a counter just like eseqiv but
it'll first xor it against a previously stored IV similar to
chainiv.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>