Encryption key free software application integrity verification procedure for decoder, mobile phone and chip card use compares memory map based signatures of executable instruction set

摘要

An encryption key free software application (1) integrity verification procedure determines a set of executable certificate instructions (4) from an execution memory map generated by a separate electronic circuit, receives and executes it in a virtual machine on a terminal at intervals during application execution to allow continued execution (10) if the signature (8) generated (6) is correct.