A Modern Toolkit for Applied Cryptography

From hashing and function selectors to advanced concepts like BLS signatures, BLSLab provides simple, interactive tools for developers, students, and non-technical users alike.

BLS Signature Visualizer

Aggregate multiple signatures into one and verify them.

Hashing Playground

Compute hashes with SHA-256, Keccak-256, and more.

Function Selector Calculator

Calculate the 4-byte selector from a function signature.

Shamir's Secret Sharing Visualizer

Split a secret into shares that can be reconstructed. Note: For educational use, not for sensitive data.