Noise-Resilient Key Distribution

How It Works

Stored Keys Are a Liability. Noisy and Contested Networks Make It Worse.

Encrypted communications depend on their cryptographic keys for authentication and decryption. In stable, high-bandwidth environments, everything works reasonably well. But when networks are contested, degraded, remote, or actively jammed, the entire system breaks down.

Conventional Public Key Infrastructure (PKI) stores private keys on the terminal device. If that device is captured, intercepted, or analysed through side-channel techniques, the keys — and everything they protect — are exposed. Traditional remedies such as heavy Error-Correcting Codes (ECC), fuzzy extractors, and AI-powered recovery algorithms all consume significant computational resources, introduce latency, and leak information in the process.

Existing anti-jamming approaches transmit information in packets of 32 to 128 bits, each carrying parity bits or data helpers. When packets cannot be corrected they are rejected and retransmitted — a cycle that slows everything down and fails entirely once noise exceeds roughly 20–25 percent. In a genuinely contested environment, that threshold is crossed routinely.

Providing cryptographic keys reliably, even when the network is working against you.

Our Solution: A Fundamentally Different Architecture

Tamper-Resistant Architecture

Noise-Resilient by Design

Low Latency, Light Compute

All data stored on the terminal is encrypted. Transmitted data does not disclose cryptographic keys at any point in the exchange.

Communications remain intact even with up to 45% of bad bits in the data packets and able to use 95%+ of previously unusable data packets that would have been rejected.

Designed for resource-constrained terminal devices. No heavy processing pipelines. Latency stays short even under aggressive jamming conditions.

1. Enrollment: During an initial secure session, each terminal device and the trusted server establish a shared cryptographic table derived from a Physical Unclonable Function (PUF), a biometric source, or an encrypted digital file. This table is the root of trust. It never leaves the secure environment.

2. Challenge Issued: When a session begins, the server selects a random challenge — a string of data drawn from the cryptographic table — and transmits it to the terminal device over the network, even if that network is noisy or jammed.

3. Response Generated: The terminal device processes the challenge through the CRP mechanism using its local cryptographic table. The result is a unique response that is used to generate the session's cryptographic key pair on demand. The private key is computed, used, and discarded. It is never stored.

4. Independent Verification: The server independently computes the expected response from the same challenge using its copy of the cryptographic table. It validates the public key and digital signature returned by the terminal without ever knowing the private key. Both parties are authenticated, and the session proceeds.

5. Noise Correction without Helpers: If noise corrupts some of the transmitted bits, the CRP mechanism's built-in tolerance — demonstrated up to 44 percent bit error rate — allows the server and terminal to recover matching keys without retransmission, parity packets, or error-correcting algorithms. Bad packets are not discarded; they are navigated.

High Entropy Security's Noise-Resilient Key Distribution protocol eliminates stored keys entirely. Instead of placing a private key on the terminal device, keys are generated on demand from a Challenge–Response Pair (CRP) mechanism — a cryptographic handshake that produces a unique, ephemeral key for each session. No key is ever at rest. Nothing on the device can be stolen, because there is nothing to steal.

The same CRP architecture also drives our Ternary Addressable Public Key Infrastructure (TAPKI), which supports multi-factor authentication and templateless biometrics, so the system verifies who you are and generates the key at the same moment.

Critically, the protocol is engineered to function through high levels of electromagnetic noise. Rather than correcting bad packets after the fact, the CRP mechanism uses the noise-tolerant properties of hashed challenge–response tables to recover error-free keys even when a high percentage of transmitted bits are corrupted.

Demonstrated performance: Operational with up to 44 percent injected noise — nearly double the threshold at which conventional systems fail.