AES Text Encrypter / Decrypter

How it works

Enter your text and a password, and the tool derives a 256-bit AES key from the password using PBKDF2 (150,000 iterations of SHA-256). It then encrypts the text with AES-GCM, which provides both confidentiality and tamper detection. A random salt and initialization vector are generated for every message and packed into the output, so encrypting the same text twice produces different results.

To decrypt, paste the Base64 output and enter the same password. If the password is wrong or the text was altered, decryption fails safely.

Use cases

• Send a password, note or API key over email or chat without exposing it in plain text
• Store sensitive snippets in a document while keeping them unreadable
• Learn how authenticated symmetric encryption works in practice

Security notes

Everything runs in your browser via the Web Crypto API — no text or password is ever uploaded. Share the encrypted text and the password through separate channels, and choose a strong password, since the security of the message depends entirely on it.