X.509: Extract both parts of the AuthorityKeyIdentifier
Extract both parts of the AuthorityKeyIdentifier, not just the keyIdentifier,
as the second part can be used to match X.509 certificates by issuer and
serialNumber.
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Vivek Goyal <vgoyal@redhat.com>
diff --git a/crypto/asymmetric_keys/x509_akid.asn1 b/crypto/asymmetric_keys/x509_akid.asn1
new file mode 100644
index 0000000..1a33231
--- /dev/null
+++ b/crypto/asymmetric_keys/x509_akid.asn1
@@ -0,0 +1,35 @@
+-- X.509 AuthorityKeyIdentifier
+-- rfc5280 section 4.2.1.1
+
+AuthorityKeyIdentifier ::= SEQUENCE {
+ keyIdentifier [0] IMPLICIT KeyIdentifier OPTIONAL,
+ authorityCertIssuer [1] IMPLICIT GeneralNames OPTIONAL,
+ authorityCertSerialNumber [2] IMPLICIT CertificateSerialNumber OPTIONAL
+ }
+
+KeyIdentifier ::= OCTET STRING ({ x509_akid_note_kid })
+
+CertificateSerialNumber ::= INTEGER ({ x509_akid_note_serial })
+
+GeneralNames ::= SEQUENCE OF GeneralName
+
+GeneralName ::= CHOICE {
+ otherName [0] ANY,
+ rfc822Name [1] IA5String,
+ dNSName [2] IA5String,
+ x400Address [3] ANY,
+ directoryName [4] Name ({ x509_akid_note_name }),
+ ediPartyName [5] ANY,
+ uniformResourceIdentifier [6] IA5String,
+ iPAddress [7] OCTET STRING,
+ registeredID [8] OBJECT IDENTIFIER
+ }
+
+Name ::= SEQUENCE OF RelativeDistinguishedName
+
+RelativeDistinguishedName ::= SET OF AttributeValueAssertion
+
+AttributeValueAssertion ::= SEQUENCE {
+ attributeType OBJECT IDENTIFIER ({ x509_note_OID }),
+ attributeValue ANY ({ x509_extract_name_segment })
+ }