AuthorityKeyIdentifier.fromAsn1 constructor
AuthorityKeyIdentifier.fromAsn1(
- ASN1Sequence sequence
Creates an authority key identifier extension value from an ASN1Sequence
.
The ASN.1 definition is:
AuthorityKeyIdentifier ::= SEQUENCE {
keyIdentifier 0
KeyIdentifier OPTIONAL,
authorityCertIssuer 1
GeneralNames OPTIONAL,
authorityCertSerialNumber 2
CertificateSerialNumber OPTIONAL }
KeyIdentifier ::= OCTET STRING
Implementation
factory AuthorityKeyIdentifier.fromAsn1(ASN1Sequence sequence) {
Uint8List? keyId;
GeneralNames? issuer;
BigInt? number;
for (var o in sequence.elements) {
switch (o.tag & 0x1f) {
case 0:
keyId = o.contentBytes();
break;
case 1:
issuer = GeneralNames.fromAsn1(o);
break;
case 2:
number =
(ASN1Parser(o.encodedBytes..[0] = 2).nextObject() as ASN1Integer)
.valueAsBigInteger;
}
}
return AuthorityKeyIdentifier(keyId, issuer, number);
}