From b299362ee48db8eab34208302ee9730ff9d6091c Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Tue, 4 Dec 2018 16:46:54 -0800 Subject: 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 Signed-off-by: Herbert Xu --- crypto/adiantum.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'crypto') 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 | -- cgit v1.2.3