Application of odd hexagonal graceful labeling in cryptography

Cryptography is regarded as a scientific discipline that achieves security by converting sensitive information into an unintelligible form that cannot be interpreted by anybody other than the transmitter and intended recipient. There are numerous cryptographic schemes, each with its own affirmative and weak qualities. This paper provides an overview of polyalphabetic cypher techniques that are currently in use for both encryption and decryption of messages. The purpose of this research is to determine the pattern of odd hexagonal graceful labelling of U-star graph U(Sn) and apply it to cryptography polyalphabetic cipher. The polyalphabetic cipher table obtained from the labelling of U-star graph U(Sn)is used for message encryption and decryption.