Understand quantum randomness.
Clear, practical guides about quantum random number generation, entropy, CMOS-native QRNG, and cybersecurity applications.
- Entropy & Security7 min
What Is Min-Entropy? Why Worst-Case Unpredictability Matters
Understand min-entropy, why NIST uses it for random number generation, and what it tells engineers about the predictability of an entropy source.
- min-entropy
- entropy estimation
- cryptographic entropy
Read article - Standards & Validation8 min
NIST SP 800-90A vs 800-90B vs 800-90C
Understand how NIST SP 800-90A, 800-90B, and 800-90C fit together across DRBGs, entropy sources, and random-bit-generator constructions.
- NIST SP 800-90
- SP 800-90A
- SP 800-90B
Read article - Fundamentals7 min
What Is a QRNG? Quantum Random Number Generation Explained
A plain-language introduction to quantum random number generators, how they differ from software RNGs, and why entropy matters for cybersecurity.
- QRNG
- quantum random number generator
- quantum entropy
Read article - Fundamentals8 min
QRNG vs PRNG vs TRNG
Compare pseudo-random, true random, and quantum random number generators. Learn how each works, where each is used, and why the distinction matters.
- QRNG
- PRNG
- TRNG
Read article - Entropy & Security7 min
Why Entropy Matters in Cybersecurity
Cryptography depends on secrets, and many of those secrets begin as random numbers. Learn where entropy enters modern security stacks.
- Entropy
- Cybersecurity
- Cryptography
Read article - Entropy & Security8 min
What Makes a QRNG Trustworthy?
Trust in a QRNG comes from the physical entropy source, validation, conditioning, and health tests — not from a single statistical test on its output.
- QRNG
- Entropy validation
- Health tests
Read article - Entropy & Security5 min
Are Statistical Tests Enough to Prove Randomness?
Statistical test suites catch some failures, but they cannot prove that a generator's underlying physics is sound. Learn why physical characterization matters.
- NIST
- Dieharder
- Testing
Read article - CMOS-native QRNG8 min
CMOS-Native QRNG, Explained Simply
What it means to build a quantum random number generator in standard silicon, and why that design choice matters for integration into modern hardware.
- CMOS-native
- Silicon
- Integration
Read article - CMOS-native QRNG6 min
Different Approaches to Quantum Entropy
An overview of how quantum entropy can be sourced — from photonic systems to silicon — and the trade-offs between approaches.
- Photonic
- CMOS-native
- Quantum entropy
Read article - Applications5 min
QRNG for Post-Quantum Cryptography
Post-quantum algorithms still need high-quality randomness. Learn where a QRNG fits in a PQC-ready security stack.
- PQC
- Post-quantum
- Keys
Read article - Applications5 min
QRNG for Embedded Systems
Why compact, electronics-native QRNG matters for embedded and IoT security, where size, power, and integration constraints dominate.
- Embedded
- IoT
- Integration
Read article - Applications5 min
QRNG for HSMs and Secure Infrastructure
Where QRNG fits inside hardware security modules, secure servers, and other infrastructure that depends on high-assurance randomness.
- HSM
- Infrastructure
- Keys
Read article - Standards & Validation5 min
NIST SP 800-90B Explained
A practical guide to NIST SP 800-90B: entropy-source models, min-entropy, IID/non-IID assessment, health tests, conditioning, restart testing and validation boundaries.
- NIST SP 800-90B
Read article - Standards & Validation4 min
IID vs Non-IID Entropy
Understand IID and non-IID entropy-source assessment, why the IID assumption is strong, and how the choice affects SP 800-90B min-entropy analysis.
- IID vs non-IID entropy
Read article - Standards & Validation4 min
SP 800-90B Restart Testing
Learn why entropy-source restart testing matters, what restart datasets are designed to reveal, and how restart analysis complements sequential entropy testing.
- SP 800-90B restart testing
Read article - Entropy & Security4 min
RNG Health Tests Explained
Learn what RNG health tests do, why physical entropy sources need runtime monitoring, and why health tests are different from entropy estimation and statistical test suites.
- RNG health tests
Read article - Entropy & Security4 min
Entropy Conditioning Explained
Understand entropy conditioning, why raw physical samples may need processing, and why a conditioner cannot create unpredictability that was not present in its input.
- entropy conditioning
Read article - Testing & Assurance4 min
How to Test an Entropy Source
A practical workflow for evaluating raw entropy data, source models, min-entropy, IID/non-IID assumptions, restart behavior, health tests, conditioning and validation boundaries.
- how to test an entropy source
Read article - Testing & Assurance4 min
How to Test a QRNG
A practical QRNG evaluation framework covering the quantum source, measurement chain, raw data, entropy model, health monitoring, conditioning, environment and system integration.
- how to test a QRNG
Read article - Standards & Validation4 min
NIST SP 800-90 vs BSI AIS 20/31
A careful comparison of the NIST SP 800-90 series and BSI AIS 20/31, using NIST IR 8446 as the primary cross-framework source.
- NIST SP 800-90 vs AIS 20/31
Read article - Standards & Validation4 min
ETSI TR 104 171
What ETSI TR 104 171 V1.1.1 is, what it covers for QRNG implementers and users, and why it should be described as implementation guidance rather than certification.
- ETSI QRNG implementation guidance
Read article