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/essiv.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/essiv.c')
| -rw-r--r-- | crypto/essiv.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/crypto/essiv.c b/crypto/essiv.c index 61d9000ae4ad..0e45f5b4f67f 100644 --- a/crypto/essiv.c +++ b/crypto/essiv.c @@ -452,6 +452,7 @@ static int essiv_create(struct crypto_template *tmpl, struct rtattr **tb) struct shash_alg *hash_alg; int ivsize; u32 type; + u32 mask; int err; algt = crypto_get_attr_type(tb); @@ -467,6 +468,7 @@ static int essiv_create(struct crypto_template *tmpl, struct rtattr **tb) return PTR_ERR(shash_name); type = algt->type & algt->mask; + mask = crypto_requires_sync(algt->type, algt->mask); switch (type) { case CRYPTO_ALG_TYPE_SKCIPHER: @@ -479,11 +481,8 @@ static int essiv_create(struct crypto_template *tmpl, struct rtattr **tb) ictx = crypto_instance_ctx(inst); /* Symmetric cipher, e.g., "cbc(aes)" */ - crypto_set_skcipher_spawn(&ictx->u.skcipher_spawn, inst); - err = crypto_grab_skcipher(&ictx->u.skcipher_spawn, - inner_cipher_name, 0, - crypto_requires_sync(algt->type, - algt->mask)); + err = crypto_grab_skcipher(&ictx->u.skcipher_spawn, inst, + inner_cipher_name, 0, mask); if (err) goto out_free_inst; skcipher_alg = crypto_spawn_skcipher_alg(&ictx->u.skcipher_spawn); @@ -503,9 +502,7 @@ static int essiv_create(struct crypto_template *tmpl, struct rtattr **tb) /* AEAD cipher, e.g., "authenc(hmac(sha256),cbc(aes))" */ crypto_set_aead_spawn(&ictx->u.aead_spawn, inst); err = crypto_grab_aead(&ictx->u.aead_spawn, - inner_cipher_name, 0, - crypto_requires_sync(algt->type, - algt->mask)); + inner_cipher_name, 0, mask); if (err) goto out_free_inst; aead_alg = crypto_spawn_aead_alg(&ictx->u.aead_spawn); |