Sha256: e7ec50f9a95a705ccefd1e25a0440555c59f4367ed811d625b60e69a6766e638
Contents?: true
Size: 1.37 KB
Versions: 7
Compression:
Stored size: 1.37 KB
Contents
require 'slosilo/symmetric'
module Slosilo
# we don't trust the database to keep all backups safe from the prying eyes
# so we encrypt sensitive attributes before storing them
module EncryptedAttributes
module ClassMethods
def attr_encrypted *a
# push a module onto the inheritance hierarchy
# this allows calling super in classes
include(accessors = Module.new)
accessors.module_eval do
a.each do |attr|
define_method "#{attr}=" do |value|
super(EncryptedAttributes.encrypt value)
end
define_method attr do
EncryptedAttributes.decrypt(super())
end
end
end
end
end
def self.included base
base.extend ClassMethods
end
class << self
def encrypt value
return nil unless value
cipher.encrypt value, key: key
end
def decrypt ctxt
return nil unless ctxt
cipher.decrypt ctxt, key: key
end
def key
Slosilo::encryption_key || (raise "Please set Slosilo::encryption_key")
end
def cipher
@cipher ||= Slosilo::Symmetric.new
end
end
end
class << self
attr_writer :encryption_key
def encryption_key
@encryption_key
end
end
end
Object.send :include, Slosilo::EncryptedAttributes
Version data entries
7 entries across 7 versions & 1 rubygems