AES Encryptor
Encrypt or decrypt data using the Advanced Encryption Standard (AES).
Algorithm: AES-GCM
GCM mode provides both confidentiality and data integrity (recommended). Requires a unique IV/Nonce for each encryption with the same key.
Ensure you use the same key, IV (if applicable), and algorithm for both encryption and decryption.
Ensure you use the same key, IV (if applicable), and algorithm for both encryption and decryption.
About the AES Tool
The Advanced Encryption Standard (AES) is a symmetric block cipher widely used to protect sensitive data. This tool allows you to encrypt and decrypt data using AES in various modes (GCM, CBC, ECB) and key sizes (128, 192, 256-bit). All operations are performed client-side in your browser for privacy.
Why Use This Tool?
Use this tool to: securely encrypt confidential messages or data before storage or transmission; decrypt AES-encrypted data when you have the correct key and IV; or experiment with different AES modes and key formats for educational purposes. It supports various input/output formats like UTF-8 text, Base64, and Hex.
Example Use Cases
- Encrypting a sensitive configuration string before saving it to a file.
- Decrypting a Base64-encoded ciphertext received from a secure API, using the provided key and IV.
- Testing the interoperability of AES implementations by encrypting here and decrypting with another tool or library.
Pro Tips
- Mode Selection: AES-GCM is generally recommended as it provides both encryption and authentication (integrity). AES-CBC is also common but requires careful handling of IVs and padding. Avoid AES-ECB for most applications due to its insecurity.
- Key and IV Management: Keep your secret keys secure. For GCM and CBC, use a unique IV for every encryption operation with the same key. Do not reuse IVs.
- Input/Output Formats: Ensure your key, IV, and data (plaintext/ciphertext) are in the correct format (UTF-8 text, Hex, Base64) as selected in the dropdowns. Mismatches can lead to errors or incorrect results.