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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2015-01-16 19:38:17 +1100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2015-01-20 14:44:15 +1100 |
| commit | 988dc0174411ad4b98c173f3d7d25aca9e56cd85 (patch) | |
| tree | 0643382e2d446d1bc46808f569a0e0ec301d2d3a /crypto/cts.c | |
| parent | 3eda71676bd9d396775c41a8b0f91357b1302cd5 (diff) | |
| download | lwn-988dc0174411ad4b98c173f3d7d25aca9e56cd85.tar.gz lwn-988dc0174411ad4b98c173f3d7d25aca9e56cd85.zip | |
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>
Diffstat (limited to 'crypto/cts.c')
| -rw-r--r-- | crypto/cts.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/crypto/cts.c b/crypto/cts.c index 6a8089c4d4b4..e467ec0acf9f 100644 --- a/crypto/cts.c +++ b/crypto/cts.c @@ -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; |