Method, apparatus and system for verifying code integrity on clients

A client for verifying code integrity, comprising:

• a memory;
• and
• a processor coupled to memory and configured to perform:
• receiving a verification sequence randomly selected from a plurality of verification sequences from a server;
• determining a memory access mode from X memory access modes, a verification algorithm from Y verification algorithms, and a packaging format from Z packaging formats based on the received verification sequence, wherein X, Y, and Z are integers larger than 1;
• determining a verification address and a verification size for a verification object based on the memory access mode of the selected verification sequence, wherein the verification address overlaps with an address of the verification object;
• determining a memory access function from a preset list of memory access functions based on the memory access mode of the selected verification sequence;
• reading data for the verification object from memory based on the verification address, the verification size, and the memory access function;
• calculating a client verification value using the data based on the verification algorithm of the selected verification sequence;
• packaging the client verification value based on the packaging format of the selected verification sequence to obtain a client verification result;
• and
• sending the client verification result to the server.

A non-transitory computer-readable storage medium containing one or more programs, wherein the one or more programs include instructions that, when being executed by a processor, cause the processor to perform:

• receiving a verification sequence randomly selected from a plurality of verification sequences from a server;
• determining a memory access mode from X memory access modes, a verification algorithm from Y verification algorithms, and a packaging format from Z packaging formats based on the received verification sequence, wherein X, Y, and Z are integers larger than 1;
• determining a verification address and a verification size for a verification object based on the memory access mode of the selected verification sequence, wherein the verification address overlaps with an address of the verification object;
• determining a memory access function from a preset list of memory access functions based on the memory access mode of the selected verification sequence;
• reading data for the verification object from memory based on the verification address, the verification size, and the memory access function;
• calculating a client verification value using the data based on the verification algorithm of the selected verification sequence;
• packaging the client verification value based on the packaging format of the selected verification sequence to obtain a client verification result;
• and
• sending the client verification result to the server.