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| 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/chacha20poly1305.c | |
| parent | crypto: ahash - make struct ahash_instance be the full size (diff) | |
| download | linux-dev-b9f76dddb1f9f70e008b982381bbc9a67c9b8c66.tar.xz linux-dev-b9f76dddb1f9f70e008b982381bbc9a67c9b8c66.zip | |
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/chacha20poly1305.c')
| -rw-r--r-- | crypto/chacha20poly1305.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/crypto/chacha20poly1305.c b/crypto/chacha20poly1305.c index 88cbdaba43b8..09d5a34ab339 100644 --- a/crypto/chacha20poly1305.c +++ b/crypto/chacha20poly1305.c @@ -558,6 +558,7 @@ static int chachapoly_create(struct crypto_template *tmpl, struct rtattr **tb, const char *name, unsigned int ivsize) { struct crypto_attr_type *algt; + u32 mask; struct aead_instance *inst; struct skcipher_alg *chacha; struct crypto_alg *poly; @@ -576,6 +577,8 @@ static int chachapoly_create(struct crypto_template *tmpl, struct rtattr **tb, if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask) return -EINVAL; + mask = crypto_requires_sync(algt->type, algt->mask); + chacha_name = crypto_attr_alg_name(tb[1]); if (IS_ERR(chacha_name)) return PTR_ERR(chacha_name); @@ -585,9 +588,7 @@ static int chachapoly_create(struct crypto_template *tmpl, struct rtattr **tb, poly = crypto_find_alg(poly_name, &crypto_ahash_type, CRYPTO_ALG_TYPE_HASH, - CRYPTO_ALG_TYPE_AHASH_MASK | - crypto_requires_sync(algt->type, - algt->mask)); + CRYPTO_ALG_TYPE_AHASH_MASK | mask); if (IS_ERR(poly)) return PTR_ERR(poly); poly_hash = __crypto_hash_alg_common(poly); @@ -608,10 +609,8 @@ static int chachapoly_create(struct crypto_template *tmpl, struct rtattr **tb, if (err) goto err_free_inst; - crypto_set_skcipher_spawn(&ctx->chacha, aead_crypto_instance(inst)); - err = crypto_grab_skcipher(&ctx->chacha, chacha_name, 0, - crypto_requires_sync(algt->type, - algt->mask)); + err = crypto_grab_skcipher(&ctx->chacha, aead_crypto_instance(inst), + chacha_name, 0, mask); if (err) goto err_drop_poly; |