AES encryption and decryption online tool

Function Overview This tool provides efficient AES (Advanced Encryption Standard) algorithm encryption and decryption services, supporting 128-bit, 192-bit and 256-bit Key length, text, JSON, Base64 and other formats of data can be encrypted and decrypted securely. Users can customise the key to meet different security needs, all operations are done locally in the browser, private data is not uploaded to the server.

Core Features

- Multi-mode encryption： Support ECB, CBC and other common encryption modes to meet the needs of different scenarios.
- Flexible key configuration： Allow manual key input or automatic generation of high-strength keys.
- Strong compatibility： Encryption results can be output in Hex or Base64 format for cross-platform use.
- Real-time response： Instant encryption/decryption of input content and one-click copying of results to improve work efficiency.

User Guide

1. Select Encryption Mode： Select AES-128/192/256 and the corresponding group mode from the drop-down menu.
2. Input the content to be processed： Paste the original data to be encrypted/decrypted in the text box.
3. Set the key： Enter the 16/24/32 byte key (or generate it with the tool).
4. Execute the operation： Click the "Encrypt" or "Decrypt" button, the result will be displayed instantly and exported. Application Scenarios： Suitable for API communication encryption, sensitive information storage, password management and development testing. The tool has a simple interface, no need for programming, 3 steps to complete the operation, is the first choice for developers and ordinary users of security solutions.