flutter - 类型“ASN1Object”不是类型转换中“ASN1Sequence”类型的子类型

Question

你知道这个错误的解决方法吗？

parsePublicKeyFromPem(String pemString) {
  List<int> publicKey = decodePEM(pemString);
  var asn1Parser = new ASN1Parser(publicKey);
  var topLevelSeq = asn1Parser.nextObject() as ASN1Sequence;
...
}

• 错误

type 'ASN1Object' is not a subtype of type 'ASN1Sequence' in type cast

谢谢你。

标签： flutterdart