MUMBAI, India, Oct. 26 -- Intellectual Property India has published a patent application (202641123672 A) filed by Vellore Institute Of Technology on October 15, 2026, for Rollback-Resistant Cryptographic Attestation System Using Acoustically Verified Plastic Deformation Of A Metallic Substrate.
Inventors include Kanagaraj R; and Abhijai S.
The application for the patent was published on October 23, 2026, under issue no. 43/2026.
Abstract: The present disclosure proposes a rollback-resistant cryptographic attestation system (100) and method for attesting large-language-model tool-call events using irreversible plastic deformation of a metallic substrate. The system (100) comprises a computing device (102) having a processor (104) and memory (106), and a cryptographic attestation peripheral comprising a secure controller, deformation actuator, acoustic sensing arrangement, and cryptographic secure element. A plurality of modules (108) is distributed between the processor (104) and the secure controller. The processor (104) performs host-side event processing, while the secure controller performs physical-write parameter derivation, deformation control, acoustic feature extraction, conformance evaluation, and cryptographic attestation. Cryptographic signing is permitted only upon successful verification of a deformation event and accumulated substrate state. Unsuccessful post-discharge operations consume physical deformation positions without advancing the successfully attested event sequence, thereby maintaining correspondence between permanent indentations and cryptographically verifiable records.
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