Method and device for the generation of checkable forgery-proof documents

The password module of external the invention relates to a using provides a method and device for anti-counterfeiting electronic file of rope, no need with the password key module information, a check and a authenticity of file. The according to any one of method and device of this invention: ) And the information is not believed the communication partner to provide with a password, provided with two length data to the password module, a or retains the password module, or joint is a file. Capable to retain the password module the data, a through the inspection value is file information, transmitting the file the information is provided with a authentic process of a check inspection, file with the password module certified copy the safety.