123456789_123456789_123456789_123456789_123456789_

Class: ActiveRecord::Encryption::Encryptor

Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Subclasses:
EncryptingOnlyEncryptor
Inherits: Object
Defined in: activerecord/lib/active_record/encryption/encryptor.rb

Overview

An encryptor exposes the encryption API that EncryptedAttributeType uses for encrypting and decrypting attribute values.

It interacts with a KeyProvider for getting the keys, and delegate to Cipher the actual encryption algorithm.

Constant Summary

Instance Method Summary

Instance Method Details

#decrypt(encrypted_text, key_provider: default_key_provider, cipher_options: {})

Decrypts a clean_text and returns the result as clean text

Options

:key_provider

Key provider to use for the encryption operation. It will default to ActiveRecord::Encryption.key_provider when not provided

:cipher_options

Cipher-specific options that will be passed to the Cipher configured in ActiveRecord::Encryption.cipher

[ GitHub ] 

  


# File 'activerecord/lib/active_record/encryption/encryptor.rb', line 52



def decrypt(encrypted_text, key_provider: default_key_provider, cipher_options: {})
  message = deserialize_message(encrypted_text)
  keys = key_provider.decryption_keys(message)
  raise Errors::Decryption unless keys.present?
  uncompress_if_needed(cipher.decrypt(message, key: keys.collect(&:secret), **cipher_options), message.headers.compressed)
rescue *(ENCODING_ERRORS + DECRYPT_ERRORS)
  raise Errors::Decryption
end


  








  

    #encrypt(clear_text, key_provider: default_key_provider, cipher_options: {})  
  



  

    

Encrypts clean_text and returns the encrypted result



Internally, it will:


  1. 

    Create a new Message
    

  2. 

    Compress and encrypt clean_text as the message payload
    

  3. 

    Serialize it with ActiveRecord::Encryption.message_serializer (ActiveRecord::Encryption::SafeMarshal by default)
    

  4. 

    Encode the result with ::ActiveRecord::Base 64
    




Options


:key_provider



Key provider to use for the encryption operation. It will default to ActiveRecord::Encryption.key_provider when not provided.


:cipher_options



Cipher-specific options that will be passed to the Cipher configured in ActiveRecord::Encryption.cipher




  



  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/encryption/encryptor.rb', line 34



def encrypt(clear_text, key_provider: default_key_provider, cipher_options: {})
  clear_text = force_encoding_if_needed(clear_text) if cipher_options[:deterministic]

  validate_payload_type(clear_text)
  serialize_message build_encrypted_message(clear_text, key_provider: key_provider, cipher_options: cipher_options)
end


  








  

    #encrypted?(text)  ⇒ Boolean 
  



  

    

Returns whether the text is encrypted or not


  





  


  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/encryption/encryptor.rb', line 62



def encrypted?(text)
  deserialize_message(text)
  true
rescue Errors::Encoding, *DECRYPT_ERRORS
  false
end