在洪流客户端的哈希计算 [英] Hash calculation in torrent clients

问题描述

我想知道是否有人知道BitTorrent客户端中的哈希是指什么，它显然不是该文件的哈希代码，但有些不同。

我认为这更多的是一个磁盘链接到一个文件，但它是如何连接到文件本身？

我只是想了解场景背后的结构。

文件< - >哈希< - >在torrent客户端中的哈希值

解决方案

在一个torrent客户端中的哈希或者你在a中找到的哈希 magnet-URI 是原始 bencoded info-dictionary - torrent部分 - 文件。

为了理解这个方法，你需要知道两件事：

• torrent如何构建。




• 如何 bencode ing完成。 http://bittorrent.org/beps/bep_0003.html

  
  
  

  然而我建议你而是阅读您可以在这里找到的规范说明： https://wiki.theory.org/BitTorrentSpecification
  
  ，因为它更容易理解。

  
  

  I was wondering if someone knows what a "hash" in a BitTorrent client is referring to, it is clearly not the hashcode of the file, but something different.

  I think thats more a magnet link to a file, but how is this connected to the file itself?

  I just want to understand the construct behind the scene.
  File <--> Hash <---> hash in torrent client

  解决方案

  The hash in a torrent client or the hashyou find in a magnet-URI is the SHA1-hash of the raw bencoded info-dictionary-part of a torrent-file.

  To understand how that works you need to know two things:

  • How a torrent-file is built.

  • How bencodeing is done.

  Both of these are explained in the offical bittorrent specification that you can find here: http://bittorrent.org/beps/bep_0003.html

  However I recommed that you instead read the inoffical specification that you can find here: https://wiki.theory.org/BitTorrentSpecification
  as it is much easier to understand.

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