MessageEncryptor is a simple way to encrypt values which get stored somewhere you don't trust.
The cipher text and initialization vector are base64 encoded and returned to you.
This can be used in situations similar to the MessageVerifier, but where you don't want users to be able to determine the value of the payload.
# File lib/active_support/message_encryptor.rb, line 35 def decrypt(encrypted_message) cipher = new_cipher encrypted_data, iv = encrypted_message.split("--").map {|v| ActiveSupport::Base64.decode64(v)} cipher.decrypt cipher.key = @secret cipher.iv = iv decrypted_data = cipher.update(encrypted_data) decrypted_data << cipher.final Marshal.load(decrypted_data) rescue OpenSSLCipherError, TypeError raise InvalidMessage end
# File lib/active_support/message_encryptor.rb, line 55 def decrypt_and_verify(value) decrypt(verifier.verify(value)) end
# File lib/active_support/message_encryptor.rb, line 20 def encrypt(value) cipher = new_cipher # Rely on OpenSSL for the initialization vector iv = cipher.random_iv cipher.encrypt cipher.key = @secret cipher.iv = iv encrypted_data = cipher.update(Marshal.dump(value)) encrypted_data << cipher.final [encrypted_data, iv].map {|v| ActiveSupport::Base64.encode64s(v)}.join("--") end
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