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authorDavid Howells <dhowells@redhat.com>2015-07-20 21:16:26 +0100
committerDavid Howells <dhowells@redhat.com>2015-08-07 16:26:13 +0100
commit4573b64a31cd8cb4cfeb1d1b95536cfe71980cf4 (patch)
tree0c019ea809c625e90a5f4b34f48831ed64c9565a /include/crypto
parentb92e6570a992c7d793a209db282f68159368201c (diff)
X.509: Support X.509 lookup by Issuer+Serial form AuthorityKeyIdentifier
If an X.509 certificate has an AuthorityKeyIdentifier extension that provides an issuer and serialNumber, then make it so that these are used in preference to the keyIdentifier field also held therein for searching for the signing certificate. If both the issuer+serialNumber and the keyIdentifier are supplied, then the certificate is looked up by the former but the latter is checked as well. If the latter doesn't match the subjectKeyIdentifier of the parent certificate, EKEYREJECTED is returned. This makes it possible to chain X.509 certificates based on the issuer and serialNumber fields rather than on subjectKeyIdentifier. This is necessary as we are having to deal with keys that are represented by X.509 certificates that lack a subjectKeyIdentifier. Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Vivek Goyal <vgoyal@redhat.com>
Diffstat (limited to 'include/crypto')
-rw-r--r--include/crypto/public_key.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/crypto/public_key.h b/include/crypto/public_key.h
index 54add2069901..b6f27a240856 100644
--- a/include/crypto/public_key.h
+++ b/include/crypto/public_key.h
@@ -101,7 +101,8 @@ extern int verify_signature(const struct key *key,
struct asymmetric_key_id;
extern struct key *x509_request_asymmetric_key(struct key *keyring,
- const struct asymmetric_key_id *kid,
+ const struct asymmetric_key_id *id,
+ const struct asymmetric_key_id *skid,
bool partial);
#endif /* _LINUX_PUBLIC_KEY_H */

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