Guides Reference Developer-focused
Hash Guides and Reference Tables
Use these guides to choose the right algorithm, verify command-line output, compare test vectors, and avoid common cryptographic workflow mistakes.
Hash Algorithm Comparison Table
Compare output length, security level, password suitability, integrity use, authentication use, and recommended alternatives.
Checksum Command Cheat Sheet
Linux, macOS, Windows certutil, and OpenSSL command examples for common checksum algorithms.
Hash Test Vectors
Known outputs for empty string, abc, and a common pangram across major algorithms.
Password Hashing Guide
Why plain hashes are not enough for passwords and how bcrypt, scrypt, Argon2id, and PBKDF2 compare.
Keccak vs SHA3
Understand why Ethereum Keccak-256 differs from standardized SHA3-256 and how encoding mistakes happen.