Software-only cryptography.
Resilient by design.

Iterum Labs builds Cyclic™ — a deterministic, software-only cryptographic system based on nonlinear state evolution. Cyclic uses a self-contained DRBG and adaptive state transitions to maintain unpredictable behavior without hardware RNGs or external entropy sources.

✓ Passed NIST SP 800-22 randomness benchmarks Hardware-free deterministic DRBG Designed for mission-critical and defense systems
Request a secure demo See validation

Divisions

Focused vertical teams applying Cyclic™ across national security, orbital systems, clinical research, and grid-scale infrastructure.

Defense

Non-algebraic symmetric cryptography and secure communication stacks for contested environments.

  • Hardware-free DRBG and AEAD
  • Deterministic behavior for verification and audit
  • Fieldable SDKs for edge and tactical devices
Discuss a pilot

Space

Software-only cryptographic primitives suited for spacecraft, deep-space links, and ground segments.

  • Secure TT&C & inter-satellite links
  • Deterministic cryptography for simulation and on-orbit use
  • No dependence on onboard hardware RNGs
Talk to Space team

Health

Privacy-preserving analytics and secure research data exchange aligned to modern regulatory expectations.

  • Encryption workflows tailored to PHI and research data
  • Deterministic validation for audit trails
  • Key lifecycle policy support
Engage Health

Energy

Software-only cryptography for OT, grid, and industrial environments where hardware entropy is constrained.

  • ICS/SCADA communication hardening
  • Secure device onboarding at massive scale
  • Telemetry integrity and signing
Brief our Energy team

Cyclic™ — Deterministic Nonlinear Cryptography

Cyclic™ is a deterministic cryptographic system based on nonlinear state evolution. Rather than sampling external entropy, Cyclic maintains unpredictability through a self-contained DRBG and adaptive ODC-style state transitions — entirely in software.

Software-only

Deploy anywhere: cloud, edge, embedded, or on-prem. No special chips or hardware RNG devices required.

  • Drop-in SDK / API
  • Container & microservice friendly
  • Pathway to regulated environments

State-driven

Cyclic uses nonlinear state evolution to maintain unpredictable behavior and avoid exploitable structural patterns.

  • Self-contained DRBG
  • Nonlinear update dynamics
  • Resists structural correlation

Interoperable

Works alongside standard symmetric ciphers and modern key-exchange schemes. Cyclic can wrap or complement existing cryptographic stacks.

  • AES / ChaCha and other symmetric primitives
  • Service integrations via gRPC / REST
  • Language bindings and sidecar patterns

Validation & internal test data

NIST SP 800-22

Full randomness test suite runs with statistically strong p-values across primary tests. Repeatable over large samples. (Internal validation; datasets documented.)

Dieharder & ENT

Additional batteries (Dieharder, ENT) demonstrate consistency beyond a single test framework and across larger generated streams.

Non-algebraic structure

Cyclic avoids the algebraic structures targeted by modern quantum algorithms, aligning with post-quantum symmetric design principles without relying on specialized hardware.

Audit-ready logs

Reproducible test runs documented for technical and compliance review. Third-party evaluation and independent analysis are planned as the system matures.

Technology overview

Deterministic DRBG

Cyclic-DRBG uses orbit-driven, nonlinear state evolution to produce deterministic keystreams without calling external RNG sources.

Authenticated Encryption

Cyclic-AEAD v1 provides a conservative SIV-style AEAD; Cyclic-AEAD v2 explores ODC-driven, multi-round encryption with ciphertext feedback.

Deployment Models

SDK, sidecar service, or on-prem microservice. Roadmap includes lightweight, hardware-accelerated implementations for edge and embedded systems.

Request access

Interested in a secure demo, validation brief, or pilot integration? Send us a note and we’ll coordinate next steps.