public
Description: Provides dead-simple string encryption/decryption syntax
Homepage: http://www.pluginaweek.org
Clone URL: git://github.com/pluginaweek/encrypted_strings.git
encrypted_strings / README.rdoc
100644 89 lines (64 sloc) 2.571 kb

encrypted_strings

encrypted_strings provides dead-simple string encryption/decryption syntax.

Resources

API

Bugs

Development

Source

  • git://github.com/pluginaweek/encrypted_strings.git

Description

Encrypting and decrypting data is not exactly the most straightforward and DRY way. encrypted_strings improves the syntax and reduces the complexity, adding straightforward support for encrypting values using SHA-1, Symmetric, and Asymmetric ciphers.

Usage

SHA Encryption

  >> password = 'shhhh'
  => "shhhh"
  >> encrypted_password = password.encrypt
  => "66c85d26dadde7e1db27e15a0776c921e27143bd"
  >> encrypted_password.class
  => String
  >> encrypted_password.cipher
  => #<EncryptedStrings::ShaCipher:0x2b9238889460 @salt="salt">
  >> encrypted_password == 'shhhh'
  => true
  >> encrypted_password.decrypt
  NotImplementedError: Decryption is not supported using a(n) EncryptedStrings::ShaCipher
          from ./script/../config/../config/../vendor/plugins/encrypted_strings/lib/encrypted_strings/cipher.rb:13:in `decrypt'
          from ./script/../config/../config/../vendor/plugins/encrypted_strings/lib/encrypted_strings/extensions/string.rb:52:in `decrypt'
          from (irb):40

When encrypt is called, it creates a cipher instance which is used for future encryption and decryption of the string. The default cipher uses SHA-1 encryption. For ciphers that do not support decryption, equality with other strings is tested by encrypting the other string and checking whether the resulting encrypted value is the same.

Symmetric Encryption

  >> password = 'shhhh'
  => "shhhh"
  >> crypted_password = password.encrypt(:symmetric, :password => 'secret_key')
  => "qSg8vOo6QfU=\n"
  >> crypted_password.class
  => String
  >> crypted_password == 'shhhh'
  => true
  >> password = crypted_password.decrypt
  => "shhhh"

Asymmetric encryption

  >> password = 'shhhh'
  => "shhhh"
  >> crypted_password = password.encrypt(:asymmetric, :public_key_file => './public.key', :private_key_file => './private.key')
  => "NEwVzcikYUKfS8HTc9L9eg/dMxBCLZ/nFr7J1aQYjkl3I2MPUD0lmjr/saC6\nTJEPwOl60Ki24H8TUwnGtZy14A==\n"
  >> crypted_password.class
  => String
  >> crypted_password == 'shhhh'
  => true
  >> password = crypted_password.decrypt
  => "shhhh"

Dependencies

None.

References