MUMBAI, India, Nov. 21 -- Intellectual Property India has published a patent application (202521098745 A) filed by Satyanarayana Vollala; Sagnik Mazumdar; Tanishq Bhattacharjee; Shashi Tiwari; Om Prakash Vyas; and Abhijeet Kar, Naya Raipur, Chhattisgarh, on Oct. 13, for 'system and method for securing digitized evidences for law enforcement using hybrid cryptographic technique.'
Inventor(s) include Satyanarayana Vollala; Sagnik Mazumdar; Tanishq Bhattacharjee; Shashi Tiwari; Om Prakash Vyas; and Abhijeet Kar.
The application for the patent was published on Nov. 21, under issue no. 47/2025.
According to the abstract released by the Intellectual Property India: "Disclosed herein is a system and method for securing digital evidences in a law enforcement communication network. The method deploys sender devices (100) and receiver devices (200) in communication with a blockchain (300) for maintaining a tamper-proof chain of custody with confidentiality, authenticity, integrity, and auditability of the evidence. Each device generates a first (public and private) key pair and a post-quantum second (public and private) key pair. The sender device (100) performs steps of: producing a random secret number to be encrypted to corresponding ciphertext by the receiver's first public key, and a post-quantum secret number to be encapsulated to corresponding ciphertext by the receiver's second public key, respectively; concatenating the random secret number, the post-quantum secret number, and metadata in a key derivation function to derive a hybrid symmetric session key; encrypting a target evidence file content with a nonce value and the metadata by the hybrid symmetric session key to obtain corresponding ciphertext; signing digitally the random secret ciphertext, the post-quantum secret ciphertext, and the evidence file ciphertext coupled with an authentication tag by the sender's first private key; bundling the evidence file ciphertext with the authentication tag, the random secret ciphertext, the post-quantum secret ciphertext, the nonce value, the metadata and the sender's digital signature in a data packet to be transmitted to the receiver device. The receiver device (200) decrypts the encrypted evidence file content though verification and comparison of retrieved data with the bundled data."
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