Secret or encryption key storage method for a secure terminal, e.g. an automatic cash dispensing machine, whereby the key is split into at least two sub-keys with one stored in an erasable backup memory and the other in ROM

摘要

Method for storing a secret key in a secure terminal, whereby the key is subdivided into at least two sub-keys, of which at least one is held in a backup memory that is configured to be erased if the terminal is illegally accessed and a further sub-key that is stored in read only memory. The invention also relates to a corresponding secure terminal.