Signature verification method and system for consumption machine

The invention provides a signature verification method and system for a consumption machine, and is applied to the field of data verification. According to the invention, binary coding processing is carried out on the application program to generate the binary code corresponding to the application program, and the specific Hash signature algorithm with the adaptive coding bit is selected from the preset Hash signature algorithm set according to the coding bit corresponding to the binary code. The method comprises the following steps of: performing Hash operation on an application program by applying a specific Hash signature algorithm to obtain a binary signature value of the application program, and arranging and combining the application program based on at least one or more binary codes existing in the application program and according to a progressive sequence of coding bits of the binary codes from less to more to obtain a binary signature value of the application program. Generating public key informati