MUMBAI, India, June 26 -- Intellectual Property India has published a patent application (202641051267 A) filed by Mepco Schlenk Engineering College on April 22, 2026, for A System And A Method For Content Based Key Derivation Used For Block Ciphers.
Inventors include Dr. S. Arivazhagan; Dr. W. Sylvia Lilly Jebarani; K. Muthusaravanan; and S. Selvarajan.
The application for the patent was published on June 19, 2026, under issue no. 25/2026.
Abstract: The content-based key derivation technique will replace the existing key generation stages in Block Cipher methods. Unlike previous methods that uuse keys either stored externally or user-selected, this technique eliminates the need for key management by generating the encryption keys directly from the data that is being encrypted. The original binary byte stream of the input data is processed through this technique, allowing it to extract verifiable personal characteristics from the original data which. These characteristics are then compressed and used with a cryptographic hashing method to generate a fixed-length encryption key. The output result will be utilized (in the form of a dynamic key) within the Block Cipher without altering its internal structure. Since the dynamicencryption keys are created based upon the data that is being stored, this method will negate the need to store keys externally or provide users the option to select their own encryption keys, simplifying key management. Additionally, since this method is lightweight, deterministic, and is optimal for use in low-resource and embedded environments, it provides a secure alternative to current methodologies for Block Cipher key generation.
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