A Proposed Method for Achieving the Confidentiality of Arabic Texts

Due to the rapid development of distributed computing systems, use local networks, and huge expansion Internet, process maintaining confidentiality information becomes important necessary. Encryption is one most ways keep confidential prevent unauthorized people from disclosing this information. Many cryptographic algorithms have appeared in different methods. But these been devoted for encrypting texts English language. Because increasing sensitive exchange Arabic language by users on an urgent need has build dedicated encryption systems The aim research provide a proposed method that uses idea combining methods transposition substitution cipher purpose confidentiality. This depends using diacritics perform cipher. efficiency tested texts; provides high speed execution, length encrypted almost close clear text length, resulting high.