Module: Origami::Encryption::EncryptedStream

Includes:
EncryptedObject
Defined in:
lib/origami/encryption.rb

Overview

Module for encrypted Stream.

Instance Attribute Summary

Attributes included from EncryptedObject

#algorithm, #decrypted, #encryption_handler, #encryption_key

Instance Method Summary collapse

Methods included from EncryptedObject

extended, #post_build

Instance Method Details

#decrypt! ⇒ Object 



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# File 'lib/origami/encryption.rb', line 500

def decrypt!
  unless @decrypted
    key = compute_object_key

    self.rawdata = @algorithm.decrypt(key, @rawdata)
    @decrypted = true
  end

  self
end

#encrypt! ⇒ Object 



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# File 'lib/origami/encryption.rb', line 477

def encrypt!
  if @decrypted
    encode!

    key = compute_object_key

    @rawdata = 
      if @algorithm == ARC4 or @algorithm == Identity
        @algorithm.encrypt(key, self.rawdata)
      else
        iv = ::Array.new(AES::BLOCKSIZE) { rand(256) }.pack('C*')
        @algorithm.encrypt(key, iv, @rawdata)
      end

    @decrypted = false

    @rawdata.freeze
    self.freeze
  end

  self
end