Category Hub
Hashing & Security
Generate cryptographically secure public/private RSA key pairs, SHA hashes, AES ciphers, and Version 4 UUIDs locally using the native W3C Web Cryptography API (window.crypto.subtle). Built specifically for developers needing private, client-side execution directly in the browser with zero server latency or data retention.
Core Engineering Workflows & Capabilities
Cryptographic Key Generation
Generate 2048-bit or 4096-bit RSA key pairs and AES-256 keys for local application testing and SSL/SSH environments.
Checksum & Digest Verification
Compute SHA-256 and SHA-512 hashes to verify file integrity and match published release checksums.
Unique Identifier Creation
Generate cryptographically random UUID v4 identifiers for database records, session tokens, and trace IDs.
Available Tools (6)
Select any tool below to launch its interactive browser-based interface.
UUID Generator
Generate secure bulk v1, v4, and v7 UUIDs.
Hash Generator
Create secure MD5, SHA-256, and SHA-512 hashes.
RSA Key Generator
Build secure RSA public and private key pairs.
Password Generator
Create strong random passwords and check strength.
AES Encryption & Decryption
Securely encrypt or decrypt text using AES ciphers locally.
JWT Creator & Signer
Generate and sign custom JWT tokens securely in the browser.
Common Tasks & Recommended Tools
Generate Version 4 UUIDs
Create cryptographically random UUIDs in bulk conforming strictly to RFC 4122 specifications.
Generate SHA Hashes
Compute SHA-1, SHA-256, SHA-384, and SHA-512 cryptographic digests in your browser.
Create RSA Key Pairs
Generate public and private RSA key pairs with PKCS#8 and SPKI formatting.
Engineering Best Practices & Tips
- Distinguish Fast Hashing from Password Storage: SHA-256 is designed for fast integrity verification. When storing user passwords, always use slow, salted key-derivation functions like Argon2, bcrypt, or scrypt.
- Protect Private Keys: Never share or commit private cryptographic keys to version control repositories. Store them in secure key vaults or environment variables.
- Use Cryptographically Secure Randomness: Always use window.crypto.getRandomValues() instead of Math.random() for security-sensitive tokens, passwords, and identifiers.
Frequently Asked Questions — Hashing & Security
How secure is browser-native cryptographic key generation?
We utilize the browser's native W3C Web Cryptography API (window.crypto.subtle), which connects to the operating system's hardware-accelerated CSPRNG kernel entropy pool.
Are generated keys or passwords ever saved or logged?
No. All cryptographic operations occur in volatile browser memory. Nothing is transmitted over the network or saved to server disks.