PrivateKeyUsagePeriod.fromAsn1 constructor

PrivateKeyUsagePeriod.fromAsn1(ASN1Sequence sequence)

Creates a basic constraints extension value from an ASN1Sequence.

The ASN.1 definition is:

PrivateKeyUsagePeriod ::= SEQUENCE { notBefore 0 GeneralizedTime OPTIONAL, notAfter 1 GeneralizedTime OPTIONAL }

Implementation

factory PrivateKeyUsagePeriod.fromAsn1(ASN1Sequence sequence) {
  var notBefore;
  var notAfter;
  for (ASN1Object o in sequence.elements) {
    if (o is ASN1Object) {
      var taggedObject = o;
      if (taggedObject.tag == 128) {
        notBefore =
            ASN1GeneralizedTime.fromBytes(o.encodedBytes).dateTimeValue;
      } else if (taggedObject.tag == 129) {
        notAfter =
            ASN1GeneralizedTime.fromBytes(o.encodedBytes).dateTimeValue;
      }
    }
  }
  return PrivateKeyUsagePeriod(notBefore: notBefore, notAfter: notAfter);
}