🔐 Security

Password Generator & Encryption

Practical security tools on one page: strong passwords, encryption and decryption, hashes to verify files, and RSA keys.

Nothing leaves your browser
Web Crypto API (crypto.subtle)
No sign-up

Nothing leaves your browser. Passwords, text, files and keys are processed locally on your device and are never sent to our server or to analytics. You can even go offline after the page loads.

Text & Data Encryption / Decryption

Zero-knowledge encryption executed locally in your browser. Secret keys are never transmitted.

🔒 Processing and encryption happen locally in your browser — no file is uploaded or stored on the server.

Encryption Algorithm / Encoding

Secret Encryption Key / Passphrase

Choose / drop a file to encrypt or decode 📁

📄

Choose / drop a file to encrypt or decode 📁

Input Text to Encrypt / Decrypt

Result Output

…

Password Strength & Entropy: — Bits of Entropy: — Est. Brute-Force Time: —

Generation Mode

Password Length 16

Character Options

Uppercase Letters (A-Z) Lowercase Letters (a-z) Numbers (0-9) Special Symbols (!@#$%^&*) Avoid Similar Chars (i, l, 1, O, 0)

Exclude Custom Characters

Batch Password Generator

Number of Passwords to Generate:

Multi-Hash Generator & File Integrity Check

Compute MD5, SHA-1, SHA-256, SHA-512 hashes and check file integrity locally without uploading files.

Real-Time Text Hashing

📁

Drag and drop any file here or click to browse

Files are processed 100% locally in browser memory!

MD5

SHA-1

SHA-256

SHA-512

Hash Verification Matcher

RSA Key Pair Generator

Generate high-security asymmetric RSA public and private key pairs formatted in standard PEM.

Key Bit Size:

Public Key (PEM Format)

Private Key (PEM Format)

How to use the security tools

Passwords: choose the length and character types, or passphrase/PIN mode, then copy. You can generate a batch and export it as TXT or CSV.
Encryption: pick AES-256, enter a strong key (or generate one), then encrypt text or a file. Keep the key — without it the data cannot be decrypted.
Hashes: type text or drop a file to compute SHA-256 and more, then paste the published hash to confirm the file was not altered.
RSA: choose a key size and generate a PEM public/private key pair. Share only the public key and store the private key safely.

Frequently asked questions

Are passwords or text sent to the server?

No. Everything is done with the Web Crypto API in your browser, Microsoft Clarity is disabled on this page and no input is recorded.

How strong is the AES-256 encryption here?

It uses AES-GCM with a 256-bit key derived from your passphrase with PBKDF2 and a random salt. Its strength depends on your key, so use a long random one.

Are Base64 and ROT13 real encryption?

No — they are encodings that only change the format and are easy to reverse. Use AES-256 for real protection.