MUMBAI, India, April 10 -- Intellectual Property India has published a patent application (202441075935 A) filed by Indian Institute Of Technology, Hyderabad, Telangana, on Oct. 7, 2024, for 'keystream generation using dynamic s-box for ciphering and deciphering in wireless communication networks.'
Inventor(s) include Jayati Dutta; and Priyanka Peri.
The application for the patent was published on April 10, under issue no. 15/2026.
According to the abstract released by the Intellectual Property India: "The present disclosure describes methods, transmitter, receiver, and system for generating keystreams to cipher and decipher input bitstreams in a wireless communication network. The method includes obtaining cryptographic parameters, including a substitution parameter, and generating a dynamic substitution box (S-box) based on the substitution parameter and a state parameter. The S-box may be generated using an invertible processing technique and configured to satisfy cryptographic constraints such as variability, consistency, and equivalent mapping. The transmitter utilizes the generated S-box and cryptographic parameters to form a keystream and cipher an input bitstream. The receiver, using synchronized parameters, reproduces the S-box, regenerates the identical keystream, and deciphers the ciphered bitstream to recover the original input. The system integrates S-box generators with invertible processing units that maintain reversible mappings, thereby ensuring high randomness, strong cryptographic strength, and secure session-specific communication suitable for next-generation wireless networks."
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