toCompactSerialization method

@override String toCompactSerialization()

Serializes the JsonWebSignature or JsonWebEncryption to a string.

Throws an exception when object cannot be serialized to its compact form, i.e. when the JsonWebSignature has multiple signatures or the JsonWebEncryption has multiple recipients.

Implementation

@override
String toCompactSerialization() {
  if (recipients.length != 1) {
    throw StateError(
        'Compact serialization does not support multiple signatures');
  }
  var signature = recipients.first;
  if (signature.unprotectedHeader != null) {
    throw StateError(
        'Compact serialization does not support unprotected header parameters');
  }
  return '${signature.protectedHeader!.toBase64EncodedString()}.${encodeBase64EncodedBytes(data)}.'
      '${encodeBase64EncodedBytes(signature.data)}';
}