Flutter RSA加密-无法使用公钥加密字符串

import 'package:encrypt/encrypt.dart';

void main() {
  final publicKey = RSAKeyParser().parse('''
      -----BEGIN PUBLIC KEY-----
      MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAvnptgeJprxs6Cg2K9m+c
      ...
      -----END PUBLIC KEY-----
  ''');

  final privateKey = RSAKeyParser().parse('''
      -----BEGIN RSA PRIVATE KEY-----
      MIIJKgIBAAKCAgEAvnptgeJprxs6Cg2K9m+c8aDcYjp+9ePToGZzIc8CovMBzscT
      ...
      -----END RSA PRIVATE KEY-----
  ''');

  final plainText = 'Hello, World!';
  final encrypter = Encrypter(RSA(publicKey: publicKey, privateKey: privateKey));
  
  final encrypted = encrypter.encrypt(plainText);
  print('Encrypted: ${encrypted.base64}');
  
  final decrypted = encrypter.decrypt(encrypted);
  print('Decrypted: $decrypted');
}