Session ID generation method and system for terminal application program

The invention discloses a session ID generation method and system for a terminal application program. The method at least comprises the following steps: receiving four-dimensional coordinate information sent by the terminal application program; based on the four-dimensional coordinate information, generating a session ID through Hash calculation; and returning the session ID to the terminal application; due to that in a four-dimensional time-space, only one terminal device may exist at the same position point, the starting time of the terminal application is different; therefore, the randomness of the generated session ID is ensured; the generated session ID is difficult to forge, meanwhile, the uniqueness of the generated session ID is also ensured; the conflict with the existing sessionID is avoided; therefore, the session hijacking and the session prediction attack can be effectively prevented; the values are collected at regular time to regenerate the session ID, session fixationand session replay attack