Commit 988dc017 authored Jan 16, 2015 by Herbert Xu

crypto: cts - Weed out non-CBC algorithms



The cts algorithm as currently implemented assumes the underlying
is a CBC-mode algorithm.  So this patch adds a check for that to
eliminate bogus combinations of cts with non-CBC modes.

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

parent 3eda7167

crypto/cts.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -290,6 +290,9 @@ static struct crypto_instance crypto_cts_alloc(struct rtattr *tb)
		if (!is_power_of_2(alg->cra_blocksize))
		goto out_put_alg;

		if (strncmp(alg->cra_name, "cbc(", 4))
		goto out_put_alg;

		inst = crypto_alloc_instance("cts", alg);
		if (IS_ERR(inst))
		goto out_put_alg;