Program encryption method and program encryption system

The present invention relates to a method for encrypting a program and a program encryption system used to encrypt the program, encrypted using the physical address of the terminal based on the manner cryptographic operations with an Internet Protocol address. And verification target program associated with the program, running in a terminal issued the open instruction target program, automatically triggers the validator; If the verification by the verification procedure, the target program is available, if the verification fails program verification, the target program is not available.