鉴于会话密钥和秘密，我们如何解密Rails Cookie？ [英] Given the session key and secret, how can we decrypt Rails cookies?

问题描述

我有一个关于Rails如何处理cookie
加密/解密的问题。

我已经在我的config / environment.rb中/ p>

  config.action_controller.session = {
：session_key => [一些关键]，
：secret => [一些秘密] 
} 
  

这在config / environment / production.rb等。：

  ActionController :: Base.session_options [：session_domain] = [some 
 domain] 
  

到目前为止，只要所有的Rails应用程序都具有相同的
session_key和secret，在同一个域中，他们都可以使用
相同的cookie。

但是，同事现在有一个JSP应用程序（在同一个域上），
，他想要阅读我设置的cookies。

所以，给定一个秘密和加密的cookie值，我们将如何解密
获取该cookie的内容？

（文档似乎表明这是默认的单向SHA1加密
- http://caboo.se/doc/classes/CGI/Session/CookieStore.html - 但
那么我的Rails应用程序将如何读取内容一个cookie
，单向加密？）

提前感谢任何提示/指针/洞察力，

Joe

解决方案

如果直接从存储在应用程序数据库中的会话数据中拉取session.data字段如果您在environment.rb文件中使用active_record_store）

  config.action_controller.session_store =：active_record_store 
  

...这里是如何解码它并返回哈希：

  Marshal.load（ActiveSupport :: Base64.decode64（@ session.data））
  

...或在Rails> = 3.2（谢谢Chuck Vose）

  Marshal.load（Base64 .decode64（@ session.data）
  

根本没有加密。

I've got a question about how Rails handles cookie encryption/decryption.

I've got this in my config/environment.rb

  config.action_controller.session = {
    :session_key => [some key],
    :secret => [some secret]
  }

And this in config/environment/production.rb et al.:

  ActionController::Base.session_options[:session_domain] = [some
domain]

So far, so good -- as long as all my Rails apps have the same session_key and secret, and are on the same domain, they can all use that same cookie.

However, a colleague now has a JSP application (on the same domain), with which he'd like to read the cookies I have set.

So, given a secret and an encrypted cookie value, how would we decrypt it to get the contents of that cookie?

(The docs seem to indicate this is one-way SHA1 encryption by default -- http://caboo.se/doc/classes/CGI/Session/CookieStore.html -- but then how would my Rails applications read the contents of a cookie that is one-way encrypted?)

Thanks in advance for any tips/pointers/insight,

Joe

解决方案

If you pull the session.data field straight from the session data stored in your app's database (if you are using active_record_store in your environment.rb file)

config.action_controller.session_store = :active_record_store

... here is how you decode it and return the hash:

Marshal.load(ActiveSupport::Base64.decode64(@session.data))

... or in Rails >= 3.2 (thanks Chuck Vose)

Marshal.load(Base64.decode64(@session.data))

It is not encrypted at all.

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