Tools

Practical cryptography utilities for engineers. Everything runs in your browser: no account, no data sent anywhere.

Hash Generator

SHA-256, SHA-512, SHA-1: live as you type.

Animated TLS 1.3 handshake with quantum vulnerability analysis.

HNDL threat model: assess your cryptographic risk.

Maturity assessment for your cryptographic practices.

Visualize shared secret establishment, step by step.

Decode tokens, verify signatures, check quantum safety.

Paste a PEM certificate: see everything inside.

Enter a domain: get real TLS configuration data.