为 OAuth 生成 HMAC-SHA1 签名的 Ruby 方法 [英] Ruby way to generate a HMAC-SHA1 signature for OAuth

问题描述

我正在编写一个小的 ruby​​ 程序来通过 OAuth 使用 Twitter，但还没有找到正确的方法来执行 HMAC-SHA1 签名.到目前为止，我搞砸了

I'm writing a small ruby program to play with Twitter over OAuth and have yet to find a right way to do the HMAC-SHA1 signature. So far, I messed around with

Base64.encode64(OpenSSL::HMAC.hexdigest(digest, key, stuff)).chomp

但这会输出 Twitter 拒绝的东西，而不是有效的签名.我实际上以更糟糕的方式解决了它，请尽量不要打我:

But this outputs something that Twitter rejects, not being a valid signature. I actually solved it in the worse way possible, please try not to slap me:

php -r "echo rawurlencode(base64_encode(hash_hmac('sha1', '#{@signature}', '#{llave}', true)));"

最后一个确实有效，我可以到处做我的事情.

This last one actually works and I can go around doing my stuff.

我想要一些关于如何在不回到 PHP 的情况下实际执行此操作的提示.在尝试学习一门语言时，我不太喜欢图书馆，所以宝石几乎是不可能的.

I'd like some tips on how to do actually do this without reverting back to PHP. I'm not much of a fan of libraries while I'm trying to learn a language, so gems are pretty much out of the question.

谢谢！

推荐答案

下面的代码等价于你的 PHP 代码，虽然我选择不将其封装在一行中.

The following is equivalent to your PHP code, though I chose not to wrap it in a single line.

我正在使用 gem ruby​​-hmac，因为它适用于 1.8 和 Ruby 1.9.如果你只使用 Ruby 1.9，我相信标准库包digest"已经实现了 HMAC(但在 1.8 版本的包中没有这个).确保 gem install ruby​​-hmac

I'm using the gem ruby-hmac, because it works with 1.8 as well as Ruby 1.9. If you're exclusively using Ruby 1.9 I believe the standard library package 'digest' has HMAC implemented (but this is missing in the 1.8 version of the package). Make sure to gem install ruby-hmac

require 'rubygems'
require 'base64'
require 'cgi'
require 'hmac-sha1'

key = '1234'
signature = 'abcdef'
hmac = HMAC::SHA1.new(key)
hmac.update(signature)
puts CGI.escape(Base64.encode64("#{hmac.digest}
"))

# equivalent to:
# php -r "echo rawurlencode(base64_encode(hash_hmac('sha1', 'abcdef', '1234', true)));"

更好的是，使用标准库包 OpenSSL(大多数 Linux 和 MacOS 开箱即用).此代码适用于 Ruby 1.8 和 1.9:

Better yet, use the standard library package OpenSSL (which most Linux and MacOS have out of the box). This code will work on Ruby 1.8 and 1.9:

require 'base64'
require 'cgi'
require 'openssl'

key = '1234'
signature = 'abcdef'
puts CGI.escape(Base64.encode64("#{OpenSSL::HMAC.digest('sha1',key, signature)}
"))

# equivalent to:
# php -r "echo rawurlencode(base64_encode(hash_hmac('sha1', 'abcdef', '1234', true)));"

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