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Foundations: Cryptography

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Cryptography

Apr 11, 2026

What Is Post-Quantum Cryptography?

Learn what post-quantum cryptography is, why quantum computers threaten today’s public-key systems, and how new PQC standards work.

23 min read

Hash Functions

Mar 21, 2026

What Is Keccak-256?

Learn what Keccak-256 is, how its sponge construction works, why rate and capacity matter, and why Ethereum keccak256 differs from SHA3-256.

21 min read

Threshold Systems

Mar 21, 2026

What is a Threshold Signature Scheme (TSS)?

Learn what a Threshold Signature Scheme (TSS) is, how threshold signing works, why it exists, and the security tradeoffs behind MPC-style key sharing.

26 min read

Cryptography

Mar 21, 2026

What Are Zero-Knowledge Proofs?

Learn what zero-knowledge proofs are, how they work, why they matter in cryptography and blockchains, and the tradeoffs behind SNARKs and STARKs.

25 min read

Threshold Systems

Mar 21, 2026

What is Distributed Key Generation (DKG)?

Learn what Distributed Key Generation (DKG) is, how dealerless key setup works, why it matters for threshold signatures, and where it can fail.

24 min read

Threshold Systems

Mar 21, 2026

What is Key Resharing?

Learn what key resharing is in threshold cryptography, how it preserves a public key while rotating shares, and why it matters for MPC and threshold signing.

23 min read

Cryptography

Mar 21, 2026

What is a STARK?

Learn what STARKs are, how they prove computation correctly, why they avoid trusted setup, and the tradeoffs versus SNARKs.

24 min read

Signatures

Mar 21, 2026

What is Ed25519?

Learn what Ed25519 is, how its deterministic signatures work, why it is fast and practical, and where validation rules matter for security.

24 min read

Signatures

Mar 21, 2026

What Are Schnorr Signatures?

Learn what Schnorr signatures are, how they work, why their linearity matters, and how BIP-340 uses them for compact, secure signatures.

23 min read

Cryptography

Mar 21, 2026

What Are SNARKs?

Learn what SNARKs are, why they exist, how they work, and the tradeoffs behind succinct zero-knowledge proofs in blockchains and cryptography.

27 min read

Signatures

Mar 21, 2026

What is ECDSA?

Learn what ECDSA is, how elliptic-curve signatures work, why the nonce matters, and where real-world implementations succeed or fail.

22 min read

Signatures

Mar 21, 2026

What is a Digital Signature?

Learn what digital signatures are, how private/public keys enable signing and verification, what security they provide, and where their limits matter.

25 min read