公开(公告)号：US06804782B1

公开(公告)日：2004-10-12

申请号：US09373866

申请日：1999-08-13

Applicant: Xin Qiu ,  Eric J. Sprunk ,  Daniel Z. Simon ,  Lawrence Tang ,  Lawrence R. Cook

Inventor： Xin Qiu ,  Eric J. Sprunk ,  Daniel Z. Simon ,  Lawrence Tang ,  Lawrence R. Cook

IPC: G06F1130

CPC classification number: G06F9/3001 ,  G06F2207/7219 ,  H04L9/003 ,  H04L9/005 ,  H04L9/3013 ,  H04L9/302

Abstract: A cryptography circuit provides secure processing of data by utilizing countermeasures that combat timing and power attacks. Superfluous operations such as multiplication operations, modular reductions by an integer, storage of data to memory are available for use by a processor to disguise the amount of power usage and the amount of time required to perform a cryptographic operation. A cryptographic key is available for use in order to trigger when these emulated operations occur. The occurrences of the emulated operations is controlled by the user to provide the preferred tradeoff between security and use of resources.

Abstract translation: 加密电路通过利用对抗定时和电源攻击的对策来提供对数据的安全处理。 多余的操作，例如乘法运算，整数模块化减少，数据存储到存储器可供处理器使用，以掩盖功率使用量和执行加密操作所需的时间。 可以使用加密密钥来在这些仿真操作发生时触发。 仿真操作的发生由用户控制，以提供资源的安全性和使用之间的首选权衡。