Patent ID: 11949781
Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A non-transitory computer-readable storage medium, storing an executable program, wherein the executable program, when being executed by a processor, is configured to implement operations of:
handshaking, by a first end, a shared key with a second end through a handshaking message; and
transmitting, by the first end, application data with the second end by a content message, wherein the content message is ciphered and deciphered by using the shared key;
wherein the handshaking message and the content message have a same message format, the message format comprises: a message serial number and a message load;
wherein the message serial number comprises a key algebra identifier and a message count identifier;
wherein the key algebra identifier is represented by bit information having the number of bits less than a first number, and the message count identifier is represented by bit information having the number of bits less than a second number;
wherein the handshaking message comprises at least one of a handshaking greeting message, a handshaking responding message, a retransmission request message, a verification data message, or a handshaking completion message;
wherein while the first end is handshaking the shared key with the second end via the handshaking greeting message, the handshaking responding message, or the retransmission request message, the key algebra identifier is a;
wherein while the first end is handshaking the shared key with the second end via the verification data message or the handshaking completion message, the key algebra identifier is a+1;
wherein while the first end is transmitting application data with the second end via the content message, the key algebra identifier is from a+2 to a+N; and
wherein the a is an integer; and the N is an integer greater than or equal to 2.