Class: Flashover::Crypto

Inherits:
Object
  • Object
show all
Defined in:
lib/flashover.rb

Instance Method Summary collapse

Constructor Details

#initialize(passphrase, salt) ⇒ Crypto

Returns a new instance of Crypto.

Raises:



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# File 'lib/flashover.rb', line 118

def initialize(passphrase, salt)
  raise MaryPoppins.new("salt needs to be 8 chars long") unless salt.length == 8
  @passphrase = passphrase
  @salt = salt
end

Instance Method Details

#decrypt(ciphertext) ⇒ Object 



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# File 'lib/flashover.rb', line 133

def decrypt ciphertext
  decryptor = OpenSSL::Cipher::Cipher.new 'AES-256-CBC'
  decryptor.decrypt
  decryptor.pkcs5_keyivgen(@passphrase, @salt)

  decrypted = decryptor.update ciphertext
  decrypted << decryptor.final
end

#encrypt(plaintext) ⇒ Object 



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# File 'lib/flashover.rb', line 124

def encrypt plaintext
  encryptor = OpenSSL::Cipher::Cipher.new 'AES-256-CBC'
  encryptor.encrypt
  encryptor.pkcs5_keyivgen(@passphrase, @salt)

  encrypted = encryptor.update plaintext
  encrypted << encryptor.final
end