解码 Torrent 追踪器抓取的 Torrent 哈希值？

我在用BEncoded PHP 库 http://proger.i-forge.net/BEncoded_%E2%80%93_handling_torrent_files_in_PHP/7Tn解码来自 Bittorrent 跟踪器的编码响应。

Tracker的响应是：

d5:filesd20:¼€™rÄ2ÞÊþVA  .]á^¦d8:completei285e10:downloadedi22911e10:incompletei9eeee

使用以下代码对其进行解码后：

require 'bencoded.php';

$be = new BEncoded;
//Response saved in scrape.txt
$data =file_get_contents('scrape.txt');
print_r($be->Decode($data));

输出是：

Array ( [files] => Array ( [¼€™rÄ2ÞÊþVA  .]á^¦] => Array ( [complete] => 285 [downloaded] => 22911 [incomplete] => 9 [isDct] => 1 ) [isDct] => 1 ) [isDct] => 1 )

我的问题我在上面的输出中的问题是如何解码输出中的那些神秘字母。

链接：http://wiki.vuze.com/w/Scrape http://wiki.vuze.com/w/Scrapeuser3690414 发布的内容几乎解释了不同键代表的含义。

要解释原始编码字符串：

d5:filesd20:¼€™rÄ2ÞÊþVA  .]á^¦d8:completei285e10:downloadedi22911e10:incompletei9eeee

您需要了解 Bencoding 的工作原理：https://wiki.theory.org/BitTorrentSpecification#Bencoding https://wiki.theory.org/BitTorrentSpecification#Bencoding

这里最重要的是要知道，编码字典中的每个条目都是一个核心价值-pair.
Where Key is a 字节串
and Value以下类型之一：字节串, integer, a list or a 字典.

考虑到这一点，原始字符串可以像这样分解：

d               // The first d indicates the start of the Root dictionary
 5:files            // that has a Key with a 5 byte string name 'files',
  d                     // the value of the 'files'-key is a second dictionary
   20:¼€™rÄ2ÞÊþVA  .]á^¦    // that has a Key 20 byte = 160 bit big endian SHA1 info-hash
    d                       // the value of that key is a third dictionary
     8:complete                 // that has a Key with a 8 byte string name 'complete',
      i285e                         // the value of that key is a Integer=285
     10:downloaded              // that has a Key with a 10 byte string name 'downloaded',
      i22911e                       // the value of that key is a Integer=22911
     10:incomplete              // that has a Key with a 10 byte string name 'incomplete',
      i9e                           // the value of that key is a Integer=9
    e                       // this e indicates the end of the third dictionary
  e                     // this e indicates the end of the second dictionary
e               // this e indicates the end of the Root dictionary

希望这有助于理解“bencoded.php”的输出。

edit.
如果你想制作 160 位大端 SHA1 信息哈希 [¼€™rä2ÞÊþVA .]á^⁠]
更易于人类阅读，我建议您将其输出为 40 字节十六进制编码字符串：
0xBC801B9D9972C432DECAFE56410F092E5DE15EA6