Overview

Definition and Purpose

In the context of a surveillance solution, Recording Files Encryption is a vital cybersecurity measure where video data streamed from cameras is cryptographically scrambled before being saved to storage. The primary purpose of this process is to ensure data confidentiality and integrity. By converting playable video into an unreadable format, encryption guarantees that even if the physical storage drives are stolen or the network is breached, the recorded footage remains inaccessible for illegal viewing. Furthermore, it acts as a tamper-evident seal; any unauthorized attempt to modify the encrypted file will corrupt the data, making it unplayable and alerting administrators to a security incident.

The Encryption Process

The workflow begins as raw video streams move from the IP cameras to the central Video Management System (VMS) server. Before the VMS writes this data to the hard drives (such as an NVR or server disk), it passes the stream through an encryption engine. Using strong cryptographic standards, such as AES-256, and a securely managed "encryption key," the engine transforms the orderly video frames into chaotic, indecipherable ciphertext. This scrambled data is exactly what is stored on the disk, meaning the files sitting on the hard drive are inherently secure at rest.

Decryption and Access

The security of the entire system hinges on the management of the decryption keys. When an authorized operator logs into the VMS client via a secure authentication process, the system grants temporary access to the necessary decryption key. This allows the VMS client to unlock the scrambled data on the fly and present clear, viewable video to the user. Conversely, if an unauthorized entity—such as a hacker or a thief who has physically stolen a drive—attempts to play the files without the specific VMS credentials and associated key, the video remains a garbled, unreadable mess, completely protecting the privacy of the recorded subjects.

Solutions

The Recording Files Encryption can be ensured using ACTi's own cameras and VMS products, such as NVR 3 Corporate.