Cryptographic system based on Unicode

During recent years, information security plays major roles with the wide use and development in communications networks. Stronger encryption and decryption represent the important demand in most applications. This strength can be achieved by data encryption and decryption algorithms which are very hard to crack and accomplish. The CIA security aims are Confidentiality, Integrity and Authenticity. In this paper, a novel cryptographic system was proposed based on principles of Unicode and crossover; This new combination add high level of security to proposed system. The English plaintext was converted to symbols in Unicode, key generated based on Arabic alphabet(also converted to Unicode), while the encryption and decryption method implemented depend on crossover principle by encryption and decryption keys K1,K2. Two parents (English plaintext, and encryption key) selected for mating using Average Crossover method (AC) which product one child only (Encrypted text) and vice versa in decryption method using decryption key. The security was achieved by confusion and diffusion concepts; variations and randomness in the encrypted text make the features of the original language are unclear; so the prediction of the plain text is difficult.