Method: HexaPDF::Encryption::AES#initialize

Defined in:
lib/hexapdf/encryption/aes.rb

#initialize(key, iv, mode) ⇒ Object

Creates a new AES object using the given encryption key and initialization vector.

The mode must either be :encrypt or :decrypt.

Classes prepending this module have to have their own initialization method as this method just performs basic checks.



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# File 'lib/hexapdf/encryption/aes.rb', line 213

def initialize(key, iv, mode)
  unless VALID_KEY_LENGTH.include?(key.length)
    raise HexaPDF::EncryptionError, "AES key length must be 128, 192 or 256 bit"
  end
  unless iv.length == BLOCK_SIZE
    raise HexaPDF::EncryptionError, "AES initialization vector length must be 128 bit"
  end
  mode = mode.intern
  super
end