RC4 encryption and decryption tools

RC4 is a widely used stream encryption algorithm, known for its efficiency and simplicity. This tool supports online text RC4 encryption and RC4 decryption operations, suitable for the following scenarios:

Core Functions

- ** Customised key**: users can input any length of key to enhance data security. - **Real-time encryption and decryption**: the result is generated instantly after inputting the text, no additional operation is required. - **Reversible algorithm**: the encrypted content can be restored by the same key, easy to verify and debug.

Instructions for use

1. **Input text**: Fill in the original content to be encrypted or decrypted in the text box. 2. **Set key**: input the key for encryption and decryption (complex combination is recommended). 3. 3. **Select Mode**: Click "Encrypt" or "Decrypt" button to get the result. 4. 4. **Result Copy**: Copy the output content with one click for subsequent use.

Application Scenarios

- ** Development test**: verify the implementation logic of RC4 algorithm and data flow processing. - **Teaching Demonstration**: Visual demonstration of the principle of stream encryption and the role of the key. - **Temporary encryption**: quickly protect sensitive text information (e.g. temporary communication).

Note: The RC4 algorithm may have known security risks, and is not recommended for long-term encryption of highly sensitive data.