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author | Eric Biggers <ebiggers@google.com> | 2020-01-02 19:58:47 -0800 |
---|---|---|
committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-01-09 11:30:54 +0800 |
commit | b969fa39ae92e1f2a62a259a7d2da9544be7c15b (patch) | |
tree | 6907ea334198cb8d4ec15acbdc4891f7f71ad2a3 | |
parent | 98ecca72e63548b208184db56904eadeb6c647ce (diff) | |
download | linux-crypto-b969fa39ae92e1f2a62a259a7d2da9544be7c15b.tar.gz linux-crypto-b969fa39ae92e1f2a62a259a7d2da9544be7c15b.zip |
crypto: akcipher - pass instance to crypto_grab_akcipher()
Initializing a crypto_akcipher_spawn currently requires:
1. Set spawn->base.inst to point to the instance.
2. Call crypto_grab_akcipher().
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 4155904c1677 ("crypto: adiantum - initialize crypto_spawn::inst")
So just make crypto_grab_akcipher() take the instance as an argument.
To keep the function call from getting too unwieldy due to this extra
argument, also introduce a 'mask' variable into pkcs1pad_create().
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to '')
-rw-r--r-- | crypto/akcipher.c | 6 | ||||
-rw-r--r-- | crypto/rsa-pkcs1pad.c | 8 |
2 files changed, 9 insertions, 5 deletions
diff --git a/crypto/akcipher.c b/crypto/akcipher.c index 7d5cf493..84ccf9b0 100644 --- a/crypto/akcipher.c +++ b/crypto/akcipher.c @@ -90,9 +90,11 @@ static const struct crypto_type crypto_akcipher_type = { .tfmsize = offsetof(struct crypto_akcipher, base), }; -int crypto_grab_akcipher(struct crypto_akcipher_spawn *spawn, const char *name, - u32 type, u32 mask) +int crypto_grab_akcipher(struct crypto_akcipher_spawn *spawn, + struct crypto_instance *inst, + const char *name, u32 type, u32 mask) { + spawn->base.inst = inst; spawn->base.frontend = &crypto_akcipher_type; return crypto_grab_spawn(&spawn->base, name, type, mask); } diff --git a/crypto/rsa-pkcs1pad.c b/crypto/rsa-pkcs1pad.c index 0aa48971..176b63af 100644 --- a/crypto/rsa-pkcs1pad.c +++ b/crypto/rsa-pkcs1pad.c @@ -598,6 +598,7 @@ static int pkcs1pad_create(struct crypto_template *tmpl, struct rtattr **tb) { const struct rsa_asn1_template *digest_info; struct crypto_attr_type *algt; + u32 mask; struct akcipher_instance *inst; struct pkcs1pad_inst_ctx *ctx; struct crypto_akcipher_spawn *spawn; @@ -613,6 +614,8 @@ static int pkcs1pad_create(struct crypto_template *tmpl, struct rtattr **tb) if ((algt->type ^ CRYPTO_ALG_TYPE_AKCIPHER) & algt->mask) return -EINVAL; + mask = crypto_requires_sync(algt->type, algt->mask); + rsa_alg_name = crypto_attr_alg_name(tb[1]); if (IS_ERR(rsa_alg_name)) return PTR_ERR(rsa_alg_name); @@ -636,9 +639,8 @@ static int pkcs1pad_create(struct crypto_template *tmpl, struct rtattr **tb) spawn = &ctx->spawn; ctx->digest_info = digest_info; - crypto_set_spawn(&spawn->base, akcipher_crypto_instance(inst)); - err = crypto_grab_akcipher(spawn, rsa_alg_name, 0, - crypto_requires_sync(algt->type, algt->mask)); + err = crypto_grab_akcipher(spawn, akcipher_crypto_instance(inst), + rsa_alg_name, 0, mask); if (err) goto out_free_inst; |