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certs: Factor out the blacklist hash creation

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Factor out the blacklist hash creation with the get_raw_hash() helper.
This also centralize the "tbs" and "bin" prefixes and make them private,
which help to manage them consistently.

Cc: David Howells <dhowells@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Eric Snowberg <eric.snowberg@oracle.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Mickaël Salaün <mic@linux.microsoft.com>
Link: https://lore.kernel.org/r/20210712170313.884724-5-mic@digikod.net
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
This commit is contained in:
Mickaël Salaün
2021-07-12 19:03:12 +02:00
committed by Jarkko Sakkinen
parent 58d416351e
commit 141e523914
4 changed files with 73 additions and 46 deletions
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14
include/keys/system_keyring.h
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@@ -10,6 +10,13 @@
#include <linux/key.h>
enum blacklist_hash_type {
/* TBSCertificate hash */
BLACKLIST_HASH_X509_TBS = 1,
/* Raw data hash */
BLACKLIST_HASH_BINARY = 2,
};
#ifdef CONFIG_SYSTEM_TRUSTED_KEYRING
extern int restrict_link_by_builtin_trusted(struct key *keyring,
@@ -54,13 +61,14 @@ static inline void __init set_machine_trusted_keys(struct key *keyring)
extern struct pkcs7_message *pkcs7;
#ifdef CONFIG_SYSTEM_BLACKLIST_KEYRING
extern int mark_hash_blacklisted(const char *hash);
extern int mark_hash_blacklisted(const u8 *hash, size_t hash_len,
enum blacklist_hash_type hash_type);
extern int is_hash_blacklisted(const u8 *hash, size_t hash_len,
const char *type);
enum blacklist_hash_type hash_type);
extern int is_binary_blacklisted(const u8 *hash, size_t hash_len);
#else
static inline int is_hash_blacklisted(const u8 *hash, size_t hash_len,
const char *type)
enum blacklist_hash_type hash_type)
{
return 0;
}