Topics
Post-quantum and quantum security, explained.
Three explainers and five topic hubs covering the full beat. Each one is the working researcher's perspective, updated when views shift, not when search-engine recency demands. Use these to find pre-cleared quotes, glossary anchors, and the underlying research.
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Q-Day
What Q-Day is, when credible estimates put it, what breaks (RSA, elliptic curves, Bitcoin keys) and what does not, and how to prepare.
/topics/q-day/ → -
Harvest now, decrypt later
The quantum attack that has already started, who is at risk, what it means for SCADA traffic, and why post-quantum key exchange is the first fix.
/topics/harvest-now-decrypt-later/ → -
Mosca's inequality (with calculator)
x + y > z. An interactive check of whether your data is already at quantum risk, with presets for OT, health and government data.
/topics/mosca-inequality/ → -
Post-Quantum Cryptography
NIST FIPS 203 / 204 / 205, Kyber, Dilithium, SPHINCS+, ICS migration constraints, the HSM problem, what to deploy in 2026 that survives 2035.
/topics/post-quantum-cryptography/ → -
PQC migration for ICS and OT
ISA/IEC 62443 zone by zone, CNSA 2.0 and federal deadlines, whether PLCs can run PQC, and a five-step OT migration plan.
/topics/ics-62443-security/ → -
Quantum kernels on NISQ hardware
ZZFeatureMap on IBM ibm_fez (156 qubits), what the +10.8 percent AUC over RBF actually means on the harder ICS testbed, and what shot-noise scaling will probably do to it.
/topics/quantum-kernels-nisq/ → -
IoT and IETF PQ-EDHOC
The 1280-byte handshake constraint, FIPS 203/204 on Arduino-class hardware (136 ms ML-DSA signing, 1850 TPS), how oneM2M, CoAP, MQTT slot above PQ-EDHOC.
/topics/iot-pq-edhoc/ → -
6G cognitive radio security
Why securing a learning radio is harder than a deterministic one. Energy-aware reward shaping, deep RL under partial observability, 25 to 30 percent energy savings at 0.93 sensing AUC.
/topics/6g-cognitive-radio-security/ →