Forensic video certification system for mobile devices with cryptographic chain of evidence, zero-knowledge architecture, hybrid post-quantum secure server anchoring, and browser-based verification.

The forensic video certification system on mobile devices addresses the lack of cryptographic evidence preservation by creating a tamper-proof, zero-knowledge, and quantum-resistant cryptographic chain of evidence, enabling secure, browser-based verification without uploading video data, thus ensuring integrity and compliance with GDPR.

DE202026001159U1Active Publication Date: 2026-06-18BRINGEZU RENE
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Utility models
Current Assignee / Owner
BRINGEZU RENE
Filing Date
2026-03-14
Publication Date
2026-06-18

AI Technical Summary

Technical Problem

Conventional mobile device video recording systems lack integrated cryptographic evidence preservation, allowing for manipulation without detection, and existing solutions either require impractical server uploads or are limited to individual frames, failing to provide a zero-knowledge architecture with continuous video and audio integrity verification.

Method used

A forensic video certification system that generates a tamper-proof cryptographic chain of evidence on the mobile device, using incremental hashing, zero-knowledge transmission, and post-quantum-safe signatures, ensuring the video data remains local while allowing browser-based verification.

Benefits of technology

Ensures tamper-proof, forensically usable video evidence without data leaving the device, compliant with GDPR, and enables independent verification without server uploads, supporting large video files and quantum-resistant security.

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Abstract

Forensic video certification system for mobile devices, comprehensive: a) a video recording module (1) for recording a continuous video stream including an audio track in a container format on the mobile device (11), wherein the recording parameters video duration, video resolution and frame rate are captured as metadata, b) a video hash module (2) for calculating a SHA-256 hash over the complete binary video data including all video frames, audio tracks and container metadata, wherein the hash calculation is performed incrementally in blocks (chunked hashing), c) a zero-knowledge transmission module (3) that ensures that only the 32-byte SHA-256 hash and the associated cryptographic proof data are transmitted to an external server (12) and that the complete video data never leave the mobile device (11), characterized in that d) a cryptographic signature module (4) is provided which generates a digital signature for each video recording using an elliptic curve method (Ed25519) with a device-specific key pair stored in a hardware-secured key memory of the mobile device (11), e) a hash chain module (5) is provided which concatenates the hashes of all video recordings in a sequential, gapless chain, with each chain hash being calculated as a cryptographic hash over the concatenation of the previous chain hash and the current video hash, and f) a forensic chain of evidence module (7) is provided which runs a defined processing pipeline for each video recording and generates a piece of evidence with at least eighteen fields, comprising video hash, digital signature, public key, timestamp, previous chain hash, chain index, video duration, video resolution and device information.
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