Encryption and authentication techniques which can be implemented on inexpensive, e.g., 8-bit, microprocessors and micro-controllers, using very little of the microprocessor's memory, are described. While the described techniques require little system resources to implement they still provide a good...http://www.google.es/patents/US5956405?utm_source=gb-gplus-sharePatente US5956405 - Implementation efficient encryption and message authentication
Implementation efficient encryption and message authentication
