Class: Hawk::Crypto::Mac

Inherits:
Base
  • Object
show all
Defined in:
lib/hawk/crypto.rb

Instance Method Summary collapse

Methods inherited from Base

#==, #encode64, #eql?, #to_s

Constructor Details

#initialize(key, options, algorithm = 'sha256') ⇒ Mac

Returns a new instance of Mac.



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# File 'lib/hawk/crypto.rb', line 68

def initialize(key, options, algorithm = 'sha256')
  @key, @options, @algorithm = key, options, algorithm
end

Instance Method Details

#digest ⇒ Object 



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# File 'lib/hawk/crypto.rb', line 100

def digest
  @digest ||= OpenSSL::HMAC.digest(openssl_digest(@algorithm).new, @key, normalized_string)
end

#normalized_string ⇒ Object 



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# File 'lib/hawk/crypto.rb', line 72

def normalized_string
  options = @options.dup
  if !options[:hash] && options.has_key?(:payload) && !options[:payload].nil?
    options[:hash] = Crypto.hash(options)
  end

  parts = []

  parts << "hawk.1.#{options[:type] || 'header'}"
  parts << options[:ts]
  parts << options[:nonce]
  parts << options[:method].to_s.upcase
  parts << options[:request_uri]
  parts << options[:host]
  parts << options[:port]
  parts << options[:hash]
  parts << options[:ext]

  if options[:app]
    parts << options[:app]
    parts << options[:dlg]
  end

  parts << nil # trailing newline

  parts.join("\n")
end