diff options
Diffstat (limited to 'crypto/ahash.c')
-rw-r--r-- | crypto/ahash.c | 58 |
1 files changed, 34 insertions, 24 deletions
diff --git a/crypto/ahash.c b/crypto/ahash.c index 3a35d67d..a64c1431 100644 --- a/crypto/ahash.c +++ b/crypto/ahash.c @@ -92,13 +92,14 @@ int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err) if (nbytes && walk->offset & alignmask && !err) { walk->offset = ALIGN(walk->offset, alignmask + 1); - walk->data += walk->offset; - nbytes = min(nbytes, ((unsigned int)(PAGE_SIZE)) - walk->offset); walk->entrylen -= nbytes; - return nbytes; + if (nbytes) { + walk->data += walk->offset; + return nbytes; + } } if (walk->flags & CRYPTO_ALG_ASYNC) @@ -193,11 +194,18 @@ int crypto_ahash_setkey(struct crypto_ahash *tfm, const u8 *key, unsigned int keylen) { unsigned long alignmask = crypto_ahash_alignmask(tfm); + int err; if ((unsigned long)key & alignmask) - return ahash_setkey_unaligned(tfm, key, keylen); + err = ahash_setkey_unaligned(tfm, key, keylen); + else + err = tfm->setkey(tfm, key, keylen); + + if (err) + return err; - return tfm->setkey(tfm, key, keylen); + crypto_ahash_clear_flags(tfm, CRYPTO_TFM_NEED_KEY); + return 0; } EXPORT_SYMBOL_GPL(crypto_ahash_setkey); @@ -368,7 +376,12 @@ EXPORT_SYMBOL_GPL(crypto_ahash_finup); int crypto_ahash_digest(struct ahash_request *req) { - return crypto_ahash_op(req, crypto_ahash_reqtfm(req)->digest); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + + if (crypto_ahash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY) + return -ENOKEY; + + return crypto_ahash_op(req, tfm->digest); } EXPORT_SYMBOL_GPL(crypto_ahash_digest); @@ -434,25 +447,12 @@ static int ahash_def_finup(struct ahash_request *req) return ahash_def_finup_finish1(req, err); } -static int ahash_no_export(struct ahash_request *req, void *out) -{ - return -ENOSYS; -} - -static int ahash_no_import(struct ahash_request *req, const void *in) -{ - return -ENOSYS; -} - static int crypto_ahash_init_tfm(struct crypto_tfm *tfm) { struct crypto_ahash *hash = __crypto_ahash_cast(tfm); struct ahash_alg *alg = crypto_ahash_alg(hash); hash->setkey = ahash_nosetkey; - hash->has_setkey = false; - hash->export = ahash_no_export; - hash->import = ahash_no_import; if (tfm->__crt_alg->cra_type != &crypto_ahash_type) return crypto_init_shash_ops_async(tfm); @@ -462,15 +462,14 @@ static int crypto_ahash_init_tfm(struct crypto_tfm *tfm) hash->final = alg->final; hash->finup = alg->finup ?: ahash_def_finup; hash->digest = alg->digest; + hash->export = alg->export; + hash->import = alg->import; if (alg->setkey) { hash->setkey = alg->setkey; - hash->has_setkey = true; + if (!(alg->halg.base.cra_flags & CRYPTO_ALG_OPTIONAL_KEY)) + crypto_ahash_set_flags(hash, CRYPTO_TFM_NEED_KEY); } - if (alg->export) - hash->export = alg->export; - if (alg->import) - hash->import = alg->import; return 0; } @@ -649,5 +648,16 @@ struct hash_alg_common *ahash_attr_alg(struct rtattr *rta, u32 type, u32 mask) } EXPORT_SYMBOL_GPL(ahash_attr_alg); +bool crypto_hash_alg_has_setkey(struct hash_alg_common *halg) +{ + struct crypto_alg *alg = &halg->base; + + if (alg->cra_type != &crypto_ahash_type) + return crypto_shash_alg_has_setkey(__crypto_shash_alg(alg)); + + return __crypto_ahash_alg(alg)->setkey != NULL; +} +EXPORT_SYMBOL_GPL(crypto_hash_alg_has_setkey); + MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Asynchronous cryptographic hash type"); |