A full-spectrum, browser-based cryptography laboratory covering modern, classical, and post-quantum systems.

This repo will house the source code for my Team's term wide game dev project for the CIS 410: Intro to Game Programming course at the University of Oregon.

A movie-set framework for browser/app demo GIFs — script a walkthrough of any web/webview UI and get a tiny, smooth, seamless looping README GIF/WebP. Like vhs, but for GUI apps.

Browser-based E91 QKD demo — entangled-pair measurements, CHSH Bell test, key from aligned bases. |S|≈2.83 means secure; an eavesdropper drags it below 2 and is caught. Ekert's entanglement-based answer to BB84

Browser-based protocol composition safety demo — MAC-then-Encrypt vs Encrypt-then-MAC, padding oracle attack, CRIME, and the composition failures that drove TLS 1.3. No backends. No simulated math.

Browser-based PKI demo — X.509 certificate chains, trust store validation, CA compromise cascades, Certificate Transparency with Merkle inclusion proofs, and post-quantum migration to ML-DSA.

Browser-based demo of Shamir's Secret Sharing — split a secret into n shares, reconstruct from any k. Polynomial curve visualization, information-theoretic security proof, and AES key protection. Invented by Adi Shamir (Weizmann Institute, Israel) in 1979.

Browser-based Merkle tree and inclusion proof demo — build trees up to 16 leaves with real SHA-256, generate O(log n) membership proofs, tamper any leaf and watch the root change, with Git, Bitcoin, and Certificate Transparency walkthroughs. Part of crypto-lab.

Browser-based AES-GCM vs AES-GCM-SIV comparison — live nonce reuse attack showing keystream XOR recovery and GHASH key extraction, synthetic IV construction visualizer, and side-by-side misuse-resistance comparison. RFC 8452. Part of crypto-lab.

Browser-based Shor's algorithm simulation — modular exponentiation period finding, QFT probability distribution, continued fractions, factor extraction. The reason RSA, ECC, and Diffie-Hellman need replacing. No backends. No simulated shortcuts — the number theory is real.

A zero-dependency browser playground for rain synthesis and lightweight deraining previews.

Browser-based demo of ML-DSA (CRYSTALS-Dilithium), the lattice-based post-quantum digital signature scheme standardized as NIST FIPS 204 in August 2024. Sign, verify, and seal documents — quantum-resistant.

Browser-based demo of the Double Ratchet Algorithm — the cryptographic protocol powering Signal, WhatsApp, and Google Messages. Live conversation with forward secrecy, break-in recovery, and key compromise simulation.

Browser-based commitment scheme demo — hash commitments, Pedersen commitments, binding and hiding properties, sealed-bid auction, and homomorphic addition. The primitive beneath ZKPs, MPC, and VSS.

Browser-based demo of three papers on ML-KEM's FO re-encryption check as side-channel oracle: masked comparison leakage (Hermelink 2024/060), imperfect DF-oracles with adaptive LDPC decoding (Guo-Nabokov-Johansson 2026/070), and NTT+CRT RNR blinding that holds under SCA and fault (Duparc-Taha 2025/181). The mirror…

Browser-based Grover's algorithm simulation — amplitude amplification, oracle phase kickback, inversion-about-mean diffusion, probability oscillation. AES-128 weakened to 2^64. AES-256 survives at 2^128. The fix is doubling key length. No backends. No simulated shortcuts.

Browser-based 2-server XOR Private Information Retrieval (Chor et al. 1995) — a patron retrieves any book from a 16-item catalog without the server learning which one was requested. Real IT-PIR arithmetic, step-by-step query walkthrough, and privacy audit panel. Part of crypto-lab.

MediaPipe hand tracking, face detection, and gesture-controlled browser demos

Browser-based Poly1305 MAC demo — polynomial evaluation over GF(2¹³⁰−5), constant-time tag verification, key-reuse attack visualizer, and Polynomial Stepper. Part of crypto-lab.

Browser-based SHA-256 vs SHA3-256 vs BLAKE3 internals — live avalanche analysis, Merkle-Damgård/sponge/tree construction diagrams, and timing benchmarks. Part of crypto-lab.