专利检索 ap:("Silverbrook Research Pty Ltd") AND inv:"STARR, Matthew Raymond" 第 1 页

1.

发明公开
COMMUNICATION SYSTEM, METHOD AND DEVICE WITH LIMITED ENCRYPTION KEY RETRIEVAL 有权
标题翻译：通信系统，方法和装置用有限的加密密钥投票

公开(公告)号：EP2520044A1

公开(公告)日：2012-11-07

申请号：EP10819728.6

申请日：2010-09-20

申请人： Silverbrook Research Pty Ltd

发明人： STARR, Matthew Raymond , PRICE-WHITE, Stephen Cameron

IPC分类号： H04L9/16

CPC分类号： H04L9/3247 , H04L9/003 , H04L9/0897

摘要： A method, system and device for encrypted communication with external entities, then device being configured to frustrate side channel attacks attempting to determine an encryption key. The device has a first memory, an encryption key stored in the first memory and a one-way function for application to the encryption key. During use, the encryption key is retrieved from the first memory prior to application to the one-way function and the device is configured to limit the number of times the encryption key is allowed to be retrieved from the non-volatile memory to a pre-determined threshold.