NTLM身份验证失败

Question

我正在尝试使用某些Java代码进行NTLM身份验证，但获得401'd。

This page让我想到以下代码（NTLMEngineImpl的源代码来自Apache HTTPClient并稍微修改here）：

System.out.println(new NTLMEngineImpl().generateType3Msg("Zaphod", "Beeblebrox", "Ursa-Minor", "LightCity", "TlRMTVNTUAACAAAAAAAAACgAAAABggAAU3J2Tm9uY2UAAAAAAAAAAA=="));

应输出：

TlRMTVNTUAADAAAAGAAYAHIAAAAYABgAigAAABQAFABAAAAADAAMAFQAAAASABIAYAAAAAAAAACiAAAAAYIAAFUAUgBTAEEALQBNAEkATgBPAFIAWgBhAHAAaABvAGQATABJAEcASABUAEMASQBUAFkArYfKbe/jRoW5xDxHeoxC1gBmfWiS5+iX4OAN4xBKG/IFPwfH3agtPEia6YnhsADT

相反，我得到：

TlRMTVNTUAADAAAAGAAYAEgAAAAYABgAYAAAABQAFAB4AAAADAAMAIwAAAASABIAmAAAAAAAAACqAAAAAYIAAgUBKAoAAAAPrYfKbe/jRoW5xDxHeoxC1gBmfWiS5+iX4OAN4xBKG/IFPwfH3agtPEia6YnhsADTVQBSAFMAQQAtAE0ASQBOAE8AUgBaAGEAcABoAG8AZABMAGkAZwBoAHQAQwBpAHQAeQA=

看起来很接近 - 我认为预期的字符串几乎是，但不完全是实际字符串的子字符串。那么额外数据来自何处以及如何解决？