Module: Pod4::Encrypting::InstanceMethods

Defined in:
lib/pod4/encrypting.rb

Instance Method Summary collapse

Instance Method Details

#encryption_iv ⇒ Object

The value of the IV field (whatever it is) _as currently stored on the model_



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# File 'lib/pod4/encrypting.rb', line 169

def encryption_iv
  return nil unless use_iv?
  instance_variable_get( "@#{self.class.encryption_iv_column}".to_sym )
end

#map_to_interface ⇒ Object

When mapping to the interface, encrypt the encryptable columns from the model



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# File 'lib/pod4/encrypting.rb', line 133

def map_to_interface
  hash   = super.to_h
  cipher = get_cipher(:encrypt)

  # If the IV is not set we need to set it both in the model object AND the hash, since we've
  # already obtained the hash from the model object.
  if use_iv? && encryption_iv.nil?
    set_encryption_iv( cipher.random_iv )
    hash[self.class.encryption_iv_column] = encryption_iv
  end

  self.class.encryption_columns.each do |col|
    hash[col] = crypt(cipher, encryption_iv, hash[col].to_s)
  end

  Octothorpe.new(hash)
end

#map_to_model(ot) ⇒ Object

When mapping to the model, decrypt the encrypted columns from the interface



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# File 'lib/pod4/encrypting.rb', line 154

def map_to_model(ot)
  hash   = ot.to_h
  cipher = get_cipher(:decrypt)
  iv     = hash[self.class.encryption_iv_column] # not yet set on the model

  self.class.encryption_columns.each do |col|
    hash[col] = crypt(cipher, iv, hash[col])
  end

  super Octothorpe.new(hash)
end