passphrase.io - zero knowledge privacy notepad

Inspired by Bitcoin Brainwallets

Enter a passphrase to store and retrieve your notepad from any web browser. All data is encrypted in your browser, so we have no way to view the contents of your notepad on our server.

Enter a long, complex passphrase for privacy, or enter short words for fun to see messages that people left behind!

Technical details: Using client-side JavaScript, your notepad is encrypted by your passphrase using AES256 encryption. Your passphrase is run through the memory-intensive scrypt key derivation function (N=2^18, r=8, p=1, dkLen=32), followed by a SHA256 hash. The hash and encrypted notepad is then sent to our server for storage. We have no way of knowing your passphrase or decrypting your notepad.