安全协处理器通过提供安全岛来实现安全的分布式应用程序，应用程序可以在其中执行和记录状态，不受攻击者的直接物理访问的观察和干扰。但是，为了使这些协处理器有效工作，此类应用程序的参与者必须能够验证他们正在与真实、未篡改的设备上的真实程序进行交互。此外，支持通用计算并将作为商业产品制造和分发的安全协处理器必须提供这些核心保护区和身份验证特性，同时还要应对许多其他挑战，包括： Ø 应用程序、操作系统、底层安全管理都可能来自不同的、相互怀疑的参与者; Ø 配置和维护必须在恶劣的环境中进行，同时尽量减少对操作的干扰； Ø 设备必须能够从复杂软件中不可避免出现的漏洞中恢复； Ø 物理安全性规定设备本身永远不能被打开和检查； Ø 不断发展的加密要求要求硬件加速器由可重新加载的卡上软件支持 本文总结了我们为解决这些问题而开发的硬件、软件和密码体系结构。

联想游戏本R7000开机或不插电源时卡慢解决办法，主要原因是驱动问题，就是R7000主板及芯片组A A C(amd audio coprocessor的简称) 这个最新版本的2.89.061驱动兼容问题。出现卡慢的机器我们需要将2.89.061版驱动卸载掉，安装Lenovo amd audio coprocessor 2.89.0.57就可以了。

Apple鉴权芯片，与apple设备进行数据交互时使用

iPod+Authentication+Coprocessor+Spec+2.0C+R1Contents Chapter 1 Introduction 7 Overview 7 Authentication protocol 7 Terminology Used in This Document 8 General Specification Terms 9 s Related documents 9 Chapter 2 Signal Descriptions and Reference Circuit 11 CP Signals and Pinouts 11 Address selection 12 Reference circuit 12 Chapter 3 Hardware Configuration and Interface 13 System Voltage/ 13 Startup of the 12C Interface/13 Starting Up the cp by turning power on /13 Starting Up the Cp by Warm Reset 14 Communication Process15/ Low-Power Sleep Mode-16 Chapter 4 Coprocessor Registers 17 Register Addresses 17 Register Descriptions 19 Device version 19 Firmware version 19 Authentication Protocol Major and Minor Versions 20 Device iD 20 Error Code 20 Authentication Control and status 21 Signature Data Length 22 Signature Data 22 hallenge Data Length 23 Challenge data 23 Accessory Certificate Data Length 23 Accessory Certificate Data 23 Self- Test Control and status 23 System Event Counter 24 Apple Device Certificate Data Lengt 3 2011-06-22 I @2011 Apple Inc. All Rights Reserved. CONTENTS Apple device certificate data 25 Chapter 5 Authentication Data flows 27 Apple Device Authentication of Accessory 27 Accessory Authentication of the Apple Device 28 Chapter 6 12C Communication Protocol 31 Slave selection and reset 31 s Coprocessor Busy. 31 Writing to the Coprocessor 31 Reading from the Coprocessor 32 Chapter 7 CP Device Characteristics 33 Physical Configuration 33 Maximum Environmental Conditions 33 Recommended Operating Conditions 34 12C Interface Characteristics 34 DC Electrical Characteristics 34 Timing Characteristics 35 ppendix a Coprocessor 2.0B to 2.0C Migration Guide 37(Ay Only 12C Communication Protocol 37 Increased SCL Speed 37 Shorter Reset Cycle 37 Warm Reset Supported 37 Automatic Sleep State Entry and Exit 38 NACK Responses Replace Clock Stretching 38 Shorter Accessory Certificate Data 38 System Event Counter Must Be Zero Betore Power-Down 38 Document Revisio

iPod+Authentication+Coprocessor+Spec+2.0C+R1

最新的Xeon Phi MIC体系结构编程指南 程序并行和vectorization Intel Xeon Phi Coprocessor High Performance Programming by James Jeffers and James Reinders