Commit aef27136 authored Aug 13, 2009 by Herbert Xu

crypto: ctr - Use chainiv on raw counter mode



Raw counter mode only works with chainiv, which is no longer
the default IV generator on SMP machines.  This broke raw counter
mode as it can no longer instantiate as a givcipher.

This patch fixes it by always picking chainiv on raw counter
mode.  This is based on the diagnosis and a patch by Huang
Ying.

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

parent 73fec120

crypto/ctr.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -219,6 +219,8 @@ static struct crypto_instance crypto_ctr_alloc(struct rtattr *tb)
		inst->alg.cra_blkcipher.encrypt = crypto_ctr_crypt;
		inst->alg.cra_blkcipher.decrypt = crypto_ctr_crypt;

		inst->alg.cra_blkcipher.geniv = "chainiv";

		out:
		crypto_mod_put(alg);
		return inst;

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