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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 | 73bed26f73a120f14cabf8d214ec5078bb42dea9 (patch) | |
| tree | c82fd171ae8bb7698531c82b0f4e8970866e4820 /crypto | |
| parent | cd900f0cacd7601dabdd028e8cbdbf2a7041cee2 (diff) | |
| download | lwn-73bed26f73a120f14cabf8d214ec5078bb42dea9.tar.gz lwn-73bed26f73a120f14cabf8d214ec5078bb42dea9.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 6db43410179b ("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 'crypto')
| -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 7d5cf4939423..84ccf9b02bbe 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 0aa489711ec4..176b63afec8d 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; |