| 摘要 |
A method and system for creating a group of marking codes for marking items in a code generation and validation system and validating the marking codes. The code generation and validation system includes a first subsystem and a second subsystem, where first and second keys in each of the subsystems are respectively used to encode a first input message in the first subsystem with an output message being the second input message in the second subsystem to solve the problem of data integrity of the validated data. |
