Tag: cryptography
All the articles with the tag "cryptography".
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Private Stablecoins, GPU Provers, and the Rand Bridge
Stablecoins moved trillions of dollars last year across ledgers where every payment is permanently public. This is a tour of what that costs, and of one way out: a shielded stablecoin bridge whose privacy proofs are manufactured by a competitive market of GPUs. We cover why privacy is a payments requirement rather than a luxury, how the Rand Protocol prover market and bridge fit together, what the economics of a proof actually look like, and what a graphics card is really doing during the five seconds it spends convincing the world you paid your rent.
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Encrypted Chat Over Sound: An Acoustic MFSK Modem in Rust
I wrote a program that sends encrypted chat between two laptops using nothing but a speaker and a microphone. No network, no pairing, no passphrase — the peers agree a key over the air with X25519 and you verify it by reading four words aloud. Here is the whole stack: parallel MFSK modulation, Goertzel detection, Reed–Solomon with cross-block interleaving, half-duplex carrier sense, and AES-256-GCM with a short authentication string.
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The Math Behind Rand Protocol: A Friendly Walkthrough
A beginner-friendly tour of the mathematics behind Rand Protocol — a privacy-preserving, post-quantum blockchain that combines BFT consensus with GPU-driven zero-knowledge proving. We unpack the cryptographic primitives, the consensus protocol, and the security proofs in language a first-year graduate student in mathematics can follow.
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The 1,000-Qubit Ceiling That Probably Isn't
Oxford physicist Tim Palmer claims quantum computers face a hard 1,000-qubit ceiling that would protect RSA and ECC forever. A careful reading of the physics and the math says otherwise---and your migration timeline should not wait to find out.