Cubestack

Text Encryption (AES)

Free AES-256 text encryption — lock a message with a password and share the scrambled text safely; only someone with the password can decrypt it. Works offline in your browser.

Encrypted text — share this

AES-256-GCM with a PBKDF2 key (250,000 rounds) and a random salt, so the same message encrypts differently each time. Send the password a different way from the text. If you lose the password, nobody can recover the message — including us.

What is the Text Encryption (AES)?

Encryption scrambles a message so it can only be read with the right key. This tool uses AES-256-GCM, the standard used by banks and messaging apps, with a key made from your password.

How to use it

  1. 1

    Type your message and a password

    Use a long, unique password.

  2. 2

    Encrypt

    Copy the scrambled text.

  3. 3

    Share

    Send the text and the password by different routes.

Features

  • AES-256-GCM

    Strong, tamper-evident encryption.

  • Password-based

    PBKDF2 with 250,000 rounds and a random salt.

  • Encrypt and decrypt

    Switch modes with one tap.

  • Private

    Works offline; nothing is uploaded.

Popular uses

  • Sharing secrets

    Wi-Fi passwords, account details, notes.

  • Storing notes

    Keep private text in cloud notes safely.

  • Learning

    See how modern encryption works.

Frequently asked questions

Can you recover my message?

No. Without the password the text can't be decrypted — by anyone.

Why is the output different every time?

A random salt and IV are used each time, which is what makes it secure.

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