In an era defined by sophisticated state-sponsored adversaries, ubiquitous surveillance capabilities, and the looming reality of quantum computing, the traditional approach to securing communications is fundamentally obsolete.
For governments, defence agencies, and enterprises handling mission-critical or classified information, relying on a single layer of security—no matter how strong it may seem—represents an unacceptable risk. The modern digital battlefield is complex, with threats targeting every layer of the communication stack, rendering simplistic security models dangerously inadequate.
To counter the multi-faceted threats of the modern era, a fundamentally different approach to security is required. Cellcrypt's cryptographic architecture is built from the ground up on the military and cybersecurity principles of Defence-in-Depth and Zero-Trust.
This is not about adding a single feature; it is a strategic doctrine that assumes compromise and builds multiple, independent, and redundant layers of security to ensure that the failure of any single layer does not result in a catastrophic breach.
Zero-Trust and Defence-in-Depth
The Defence-in-Depth strategy is analogous to the layered defences of a medieval castle: an attacker must overcome a moat, an outer wall, an inner wall, and finally the heavily fortified keep to reach the objective. Each layer is designed to slow down and repel an attack, compensating for any potential weakness in the others.
Cellcrypt applies this doctrine through a Zero-Trust crypto architecture. We operate under an "assume a breach" philosophy, meaning we do not implicitly trust any network, server, or component in the communication chain. Every element is designed to be independently secure, ensuring that a compromise in one area—such as the network layer—does not compromise the confidentiality of the data itself.
The first layer of Cellcrypt's defence is the protection of the communication channel itself. Think of this as an armoured truck purpose-built to transport a locked safe. The truck's armour protects the transport process from external attack and surveillance, ensuring the safe arrival at its destination without interference.
Inside the armoured transport is the second, and most critical, layer of defence: the locked safe. This is the true end-to-end encryption (E2EE) that protects the content of your communications. Even if an adversary were to hijack the armoured truck (i.e., compromise the network), the contents of the safe—your voice calls, video conferences, messages, and files remain impenetrably secure.
To address the "Harvest Now, Decrypt Later" threat, we integrate a second, forward-looking shield directly into our key agreement process. Alongside the classical ECC algorithm, we implement Post-Quantum Cryptography (PQC) using CRYSTALS-Kyber, a key encapsulation mechanism.
The field of post-quantum cryptography is a dynamic one. Post-Quantum research and development will continue to evolve. Recognising this, Cellcrypt is built on a framework of "Quantum-Agility".
