In a microprocessor configuration, data is temporarily stored in a cache memory or a register bank. A respectively assigned cryptographic unit ensures that the data is encrypted or decrypted when the cache memory or the register bank is accessed. The keyword which is used here is changed if the cache...http://www.google.com.au/patents/US7526655?utm_source=gb-gplus-sharePatent US7526655 - Microprocessor configuration and method for operating a microprocessor configuration