Introduction to RC4 encryption and decryption tool

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

Core Functions

- ** Customized 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 text box with the original content to be encrypted or decrypted. 2. 2. **Set key**: enter the key for encryption and decryption (complex combinations are 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**: Visualize the principle of stream encryption and the role of the key. - **Temporary encryption**: quickly protect sensitive text information (such as temporary communication).

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