Security & Cryptography Tools
Compute cryptographic hashes (SHA-256, MD5), encrypt with AES-256, generate secure passwords, inspect 2FA TOTP tokens, and test ciphers in browser memory.
All Security & Cryptography Tools
Select a utility below to launch directly in your browser.
AES-GCM & AES-CBC Encryption
Encrypt and decrypt text messages with AES-GCM and AES-CBC using client-side Web Crypto API.
RSA Keypair Generator
Generate 2048/4096-bit RSA public and private keypairs in standard PEM PKCS#8 format.
HMAC Signature Generator & Verifier
Generate and verify HMAC-SHA256, HMAC-SHA512, and HMAC-SHA1 signatures with secret keys.
TOTP 2FA Authenticator Simulator
Generate and test RFC 6238 Time-based One-Time Passwords (TOTP) from base32 secret seeds.
BIP39 Mnemonic Seed Generator
Generate cryptographically secure 12 and 24-word BIP39 crypto wallet mnemonic seed phrases.
Random Secure Password Generator
Generate cryptographically secure random passwords with configurable character sets and entropy scoring.
Password Strength & Entropy Checker
Analyze password entropy bits, brute-force crack time estimates, and pattern vulnerabilities.
Caesar Cipher Encoder & Decoder
Encrypt and decrypt classic Caesar substitution ciphers with custom shift values.
Vigenère Polyalphabetic Cipher
Encrypt and decrypt text using polyalphabetic Vigenère tabula recta substitution.
Morse Code Audio & Text Translator
Translate text to Morse code and decode Morse with Web Audio tone playback.
Multi-Algorithm Hash & HMAC Generator
Compute MD5, SHA-1, SHA-256, SHA-512, SHA-3, and HMAC signatures in browser with file checksum matching.
JWT Inspector & Signature Verifier
Decode JSON Web Tokens, inspect claims, calculate expiration countdowns, and verify signatures in browser RAM.
RSA & ECC Key Pair Generator
Generate cryptographically secure RSA and ECC public and private key pairs with PEM and JWK exports.
SSL/TLS Certificate & ASN.1 X.509 Parser
Parse PEM and ASN.1 DER X.509 certificates, verify SAN domains, and calculate SHA-256 fingerprints.
Learn more about security & cryptography tools
Read comprehensive architectural tutorials, algorithmic breakdowns, RFC specifications, and real-world implementation case studies on our technical blog.
Frequently Asked Questions
Can Toolbox servers see the passwords or encryption keys I generate?
Never. All cryptography relies on window.crypto.getRandomValues and the W3C Web Cryptography standard running directly on your CPU. We operate under a strict zero-backend policy.
Are generated cryptographic hashes suitable for production file checksums?
Yes. Our multi-algorithm hash generator reads files via chunked FileReader streams and matches SHA-256 and MD5 checksums exactly as command-line sha256sum utilities do.