An encryption method includes the steps of (a) generating random data including a first part and a second part, the first part specifying an operation to be performed on plain text data and the second part being used in the operation, (b) performing the specified operation on the plain text data using...http://www.google.com.tw/patents/US7352862?utm_source=gb-gplus-share專利 US7352862 - Encryption method, communication system, transmission device, and data input device
