4 Tools
Password & Authentication Security
Strong passwords and secure authentication are the first line of defense in digital security. Our password security tools help you generate cryptographically strong passwords, evaluate password entropy and crack time, compute secure hashes using industry-standard algorithms (MD5, SHA-1, SHA-256, SHA-512), and generate HMAC signatures for API authentication. All processing is client-side — your passwords, secrets, and sensitive data never leave your browser. These tools follow NIST-recommended security practices and use the Web Crypto API for cryptographic operations.
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Frequently Asked Questions
What makes a password strong in 2026?
A strong password in 2026 is at least 14-16 characters long, uses a mix of uppercase, lowercase, numbers, and symbols, avoids common patterns and dictionary words, and is unique across different services. Password length is more important than complexity — a 20-character phrase is harder to crack than an 8-character complex string. Use our Password Generator to create strong random passwords and the Password Checker to test your existing passwords.
Is it safe to type my password into these tools?
Yes. All password processing happens entirely in your browser using JavaScript. No data is sent to any server. You can disconnect from the internet and the tool will still work. We do not log, store, or transmit any input you enter.
What is the difference between hashing and encryption?
Hashing is a one-way function — you cannot reverse a hash back to the original input. Encryption is two-way — encrypted data can be decrypted with the correct key. Hashing is used for password storage and data integrity verification. Encryption is used for data confidentiality. Our Hash Generator produces one-way hashes only.