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crypto: ctr - Use chainiv on raw counter mode

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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>
This commit is contained in:
Herbert Xu 2009-08-13 23:10:39 +10:00
parent 73fec12094
commit aef27136b8
1 changed files with 2 additions and 0 deletions
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2
crypto/ctr.c
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@ -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.encrypt = crypto_ctr_crypt;
inst->alg.cra_blkcipher.decrypt = crypto_ctr_crypt; inst->alg.cra_blkcipher.decrypt = crypto_ctr_crypt;
inst->alg.cra_blkcipher.geniv = "chainiv";
out: out:
crypto_mod_put(alg); crypto_mod_put(alg);
return inst; return inst;