On the web page "Application Management -> Message Push" of the AIOT Open Platform website, please click the "edit" button in the upper right corner and then fill in the following configuration:

• URL : The interface URL of the third-party server which receive the device messages;
• Token : Filled by the developer to generate a signature;
• EncodingAESKey : randomly generated or manually written by the developer, will be used as a message body encryption and decryption.
• Message encryption and decryption mode : divided into plain text mode, compatibility mode and security mode, change the message encryption and decryption mode will take effect immediately, please modify the developer carefully.

The following is the details of the different under the difference message encryption and decryption mode:

• Plaintext mode : the message body is not encrypted in low security factor;
• Compatibility mode : the message body contains both the plaintext and ciphertext for facilitating debugging of developer;
• Safe mode : the message body is encrypted, so the developer need to decrypt the message and this mode has high security factor.

Note that only the "plain text mode" is supported now, so the developer is suggested to use the plain text mode.