Class: Hide::AE

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

Class Method Summary collapse

Class Method Details

.decrypt(data, key, salt, iter, iv, auth_tag, auth_data = String.new, key_length = 32) ⇒ Object 



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# File 'lib/hide/ae.rb', line 17

def decrypt data, key, salt, iter, iv, auth_tag, auth_data = String.new,
  key_length = 32
  decipher = OpenSSL::Cipher.new 'aes-256-gcm'
  decipher.decrypt
  decipher.key = OpenSSL::PKCS5.pbkdf2_hmac_sha1(key, salt, iter,
    key_length)
  decipher.iv = iv
  decipher.auth_tag = auth_tag
  decipher.auth_data = auth_data
  decipher.update(data) + decipher.final rescue raise ArgumentError
    .new('Authentication failed')
end

.encrypt(data, key, salt, iter, iv = SecureRandom.random_bytes(16), auth_data = String.new, key_length = 32) ⇒ Object 



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# File 'lib/hide/ae.rb', line 3

def encrypt data, key, salt, iter, iv = SecureRandom.random_bytes(16),
  auth_data = String.new, key_length = 32
  cipher = OpenSSL::Cipher.new 'aes-256-gcm'
  cipher.encrypt
  cipher.key = OpenSSL::PKCS5.pbkdf2_hmac_sha1(key, salt, iter, key_length)
  cipher.iv = iv
  cipher.auth_data = auth_data
  {
    data: cipher.update(data) + cipher.final,
    iv: iv,
    auth_tag: cipher.auth_tag
  }
end