netdev - [PATCH] xfrm: Fix key lengths for rfc3686(ctr(aes))

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Date:	Thu, 28 Jul 2011 13:36:20 -0700 (MST)
From:	Tushar Gohad <tgohad@...sta.com>
To:	Joy Latten <latten@...tin.ibm.com>,
	Herbert Xu <herbert@...dor.apana.org.au>
cc:	netdev <netdev@...r.kernel.org>, tgohad@...sta.com
Subject: [PATCH] xfrm: Fix key lengths for rfc3686(ctr(aes))


Fix the min and max bit lengths for AES-CTR (RFC3686) keys.
The number of bits in key spec is the key length (128/256)
plus 32 bits of nonce.

This change takes care of the "Invalid key length" errors
reported by setkey when specifying 288 bit keys for aes-ctr.

Signed-off-by: Tushar Gohad <tgohad@...sta.com>
---
  net/xfrm/xfrm_algo.c |    4 ++--
  1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/xfrm/xfrm_algo.c b/net/xfrm/xfrm_algo.c
index 58064d9..791ab2e 100644
--- a/net/xfrm/xfrm_algo.c
+++ b/net/xfrm/xfrm_algo.c
@@ -462,8 +462,8 @@ static struct xfrm_algo_desc ealg_list[] = {
  	.desc = {
  		.sadb_alg_id = SADB_X_EALG_AESCTR,
  		.sadb_alg_ivlen	= 8,
-		.sadb_alg_minbits = 128,
-		.sadb_alg_maxbits = 256
+		.sadb_alg_minbits = 160,
+		.sadb_alg_maxbits = 288
  	}
  },
  };
-- 
1.6.3.3.202.g91879

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