Module: HexaPDF::Encryption::ARC4::ClassMethods

Defined in:
lib/hexapdf/encryption/arc4.rb

Overview

Convenience methods for decryption and encryption that operate according to the PDF specification.

These methods will be available on the class object that prepends the ARC4 module.

Instance Method Summary collapse

Instance Method Details

#encrypt(key, data) ⇒ Object Also known as: decrypt

Encrypts the given data with the key.

See: PDF2.0 s7.6.3



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# File 'lib/hexapdf/encryption/arc4.rb', line 69

def encrypt(key, data)
  new(key).process(data)
end

#encryption_fiber(key, source) ⇒ Object Also known as: decryption_fiber

Returns a Fiber object that encrypts the data from the given source fiber with the key.



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# File 'lib/hexapdf/encryption/arc4.rb', line 76

def encryption_fiber(key, source)
  Fiber.new do
    algorithm = new(key)
    while source.alive? && (data = source.resume)
      Fiber.yield(algorithm.process(data)) unless data.empty?
    end
  end
end