diff options
| author | Eric Biggers <ebiggers@google.com> | 2020-01-02 19:58:45 -0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-01-09 11:30:54 +0800 |
| commit | b9f76dddb1f9f70e008b982381bbc9a67c9b8c66 (patch) | |
| tree | 329d8484b8eace9777db4e9965b02372c79e1a9f /crypto/adiantum.c | |
| parent | 77f7e94d72208a1a84c88ed4de16a9bf368e9ded (diff) | |
crypto: skcipher - pass instance to crypto_grab_skcipher()
Initializing a crypto_skcipher_spawn currently requires:
1. Set spawn->base.inst to point to the instance.
2. Call crypto_grab_skcipher().
But there's no reason for these steps to be separate, and in fact this
unneeded complication has caused at least one bug, the one fixed by
commit 6db43410179b ("crypto: adiantum - initialize crypto_spawn::inst")
So just make crypto_grab_skcipher() take the instance as an argument.
To keep the function calls from getting too unwieldy due to this extra
argument, also introduce a 'mask' variable into the affected places
which weren't already using one.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/adiantum.c')
| -rw-r--r-- | crypto/adiantum.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/crypto/adiantum.c b/crypto/adiantum.c index 30cffb45b88f..567071464fab 100644 --- a/crypto/adiantum.c +++ b/crypto/adiantum.c @@ -493,6 +493,7 @@ static bool adiantum_supported_algorithms(struct skcipher_alg *streamcipher_alg, static int adiantum_create(struct crypto_template *tmpl, struct rtattr **tb) { struct crypto_attr_type *algt; + u32 mask; const char *streamcipher_name; const char *blockcipher_name; const char *nhpoly1305_name; @@ -511,6 +512,8 @@ static int adiantum_create(struct crypto_template *tmpl, struct rtattr **tb) if ((algt->type ^ CRYPTO_ALG_TYPE_SKCIPHER) & algt->mask) return -EINVAL; + mask = crypto_requires_sync(algt->type, algt->mask); + streamcipher_name = crypto_attr_alg_name(tb[1]); if (IS_ERR(streamcipher_name)) return PTR_ERR(streamcipher_name); @@ -531,11 +534,9 @@ static int adiantum_create(struct crypto_template *tmpl, struct rtattr **tb) ictx = skcipher_instance_ctx(inst); /* Stream cipher, e.g. "xchacha12" */ - crypto_set_skcipher_spawn(&ictx->streamcipher_spawn, - skcipher_crypto_instance(inst)); - err = crypto_grab_skcipher(&ictx->streamcipher_spawn, streamcipher_name, - 0, crypto_requires_sync(algt->type, - algt->mask)); + err = crypto_grab_skcipher(&ictx->streamcipher_spawn, + skcipher_crypto_instance(inst), + streamcipher_name, 0, mask); if (err) goto out_free_inst; streamcipher_alg = crypto_spawn_skcipher_alg(&ictx->streamcipher_spawn); |