File structure, digital signature method and digital signature validation method with verifiable reconfiguration

The invention discloses a file structure, a digital signature method and a digital signature validation method with verifiable reconfiguration. The file structure is a compound storage and comprises a displaying content sub-compound storage and a digital signature compound storage. The displaying content sub-compound storage stores the file displaying content, and the digital signature compound storage stores the file digital signature. The file structure enables the digital signature and the file displaying content to be stored in the different targets of the file structure so that a distribution of the digital signature and the file displaying content on the data flow level is achieved, and the files are capable of reconfiguring after the digital signature without affecting the validation of the practical displaying content.