Security Tools

AES Encryption Tool

Advanced Encryption Standard (AES). Securely encrypt text with a secret passphrase or decrypt a message you've received.

About AES Encryption

The Advanced Encryption Standard (AES) is a symmetric block cipher chosen by the U.S. government to protect classified information. It is implemented in software and hardware throughout the world to encrypt sensitive data.

How it works

AES is a symmetric encryption algorithm, meaning the same key is used for both encrypting and decrypting the data. It supports key sizes of 128, 192, and 256 bits. This tool uses the crypto-js library implementation which defaults to AES-256.

Why use AES?

  • Global Standard: It is the industry standard for encryption, trusted by governments and security experts worldwide.
  • Speed: AES is computationally efficient, making it fast to encrypt even large amounts of data.
  • Security: When used with a strong key (passphrase), AES is practically unbreakable by brute-force attacks.

Important Note on Passphrases

Since AES is symmetric, if you lose your passphrase, your data is lost forever. There is no "forgot password" feature for AES encryption.