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| author | Eric Biggers <ebiggers@google.com> | 2018-12-04 16:46:54 -0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-12-13 18:24:56 +0800 |
| commit | b299362ee48db8eab34208302ee9730ff9d6091c (patch) | |
| tree | ee526e1b701dc4cd5c943231ad633f2a70b2a749 | |
| parent | 2fe55987b2624a86a5c709a8df65d4de2608dc07 (diff) | |
| download | lwn-b299362ee48db8eab34208302ee9730ff9d6091c.tar.gz lwn-b299362ee48db8eab34208302ee9730ff9d6091c.zip | |
crypto: adiantum - propagate CRYPTO_ALG_ASYNC flag to instance
If the stream cipher implementation is asynchronous, then the Adiantum
instance must be flagged as asynchronous as well. Otherwise someone
asking for a synchronous algorithm can get an asynchronous algorithm.
There are no asynchronous xchacha12 or xchacha20 implementations yet
which makes this largely a theoretical issue, but it should be fixed.
Fixes: 059c2a4d8e16 ("crypto: adiantum - add Adiantum support")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | crypto/adiantum.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/crypto/adiantum.c b/crypto/adiantum.c index 2dfcf12fd452..ca27e0dc2958 100644 --- a/crypto/adiantum.c +++ b/crypto/adiantum.c @@ -590,6 +590,8 @@ static int adiantum_create(struct crypto_template *tmpl, struct rtattr **tb) hash_alg->base.cra_driver_name) >= CRYPTO_MAX_ALG_NAME) goto out_drop_hash; + inst->alg.base.cra_flags = streamcipher_alg->base.cra_flags & + CRYPTO_ALG_ASYNC; inst->alg.base.cra_blocksize = BLOCKCIPHER_BLOCK_SIZE; inst->alg.base.cra_ctxsize = sizeof(struct adiantum_tfm_ctx); inst->alg.base.cra_alignmask = streamcipher_alg->base.cra_alignmask | |