keyUsage property

List<bool> get keyUsage

Gets a boolean array representing bits of the KeyUsage extension, (OID = 2.5.29.15).

KeyUsage ::= BIT STRING {
digitalSignature        (0),
nonRepudiation          (1),
keyEncipherment         (2),
dataEncipherment        (3),
keyAgreement            (4),
keyCertSign             (5),
cRLSign                 (6),
encipherOnly            (7),
decipherOnly            (8)
}

Implementation

List<bool> get keyUsage {
  var result = <bool>[];
  var oidBlock = block1?.findOid(oid: OID.keyUsage);
  if (oidBlock != null) {
    var sub = oidBlock.parent?.sub;
    if (sub != null && sub.length > 0) {
      var data = sub.last.subAtIndex(0)?.value;
      int bits = (data is List<int> && data.length > 0) ? data.first : 0;
      for (var index = 0; index < 8; index++) {
        var value = bits & (1 << index).toUnsigned(8) != 0;
        result.insert(0, value);
      }
    }
  }
  return result;
}