Trusted Computing Platforms

出版者:Prentice Hall PTR

作者:Siani Pearson

页数:352

出版时间:2002-07-22

价格:USD 49.99

装帧:Hardcover

isbn号码:9780130092205

具体描述

Preface February 2001 witnessed a major leap forward in the field of computer security with the publication of an innovative industry specification for "trusted platforms." This heralded a new era in significantly higher security for electronic commerce and electronic interaction than currently exists. What's the difference between a "platform" and a "trusted platform"? A platform is any computing device-a PC, server, mobile phone, or any appliance capable of computing and communicating electronically with other platforms. A Trusted Platform is one containing a hardware-based subsystem devoted to maintaining trust and security between machines. Throughout this book, we use italics for terms like this that we are using in a very specific way. This industry standard in trusted platforms is backed by a broad spectrum of companies including HP, Compaq, IBM, Microsoft, Intel, and many others. Together, they form (or make up) the Trusted Computing Platform Alliance (TCPA). Major innovations in corporate security like this occur infrequently, but they are of great importance in affecting the development of the field for many years. In this book, we explain the new technology as simply as possible, why it has been developed, and how it will operate in the real world. In particular, this book aims to complement the TCPA standards by providing a plain-language primer of the technical specifications, as well as setting them in context and explaining how the technology will be used, both in the short term and in the longer term. Our hope is that the reader will gain a broad understanding of TCPA technology from a team who helped write the complex technical specification documents without having to read these documents "cold." It serves both as an ideal introduction to trusted computing for the general reader and as a method of improving the "learning curve" for manufacturers and application developers wishing to implement trusted systems. The book has a different approach to other descriptions of Trusted Platforms, being much more detailed and broad in context than the TCPA white papers and design philosophy document, yet avoiding the deep technical details of the TCPA specification. It is intended to explain, clarify, and inspire rather than specify. A lack of trust in electronic services is one of the major factors constraining the growth of e-commerce. The importance of secure interaction is widely appreciated, but many people are not up to date with the latest thinking and approaches. The radical new approach to trusted computing described here has the potential of liberating the sector and dictating the way electronic communication develops as the young century evolves. The problem addressed by the TCPA is that in modern information society, computer resources are becoming increasingly global and open. As a result, computing platforms are playing not only the role of computing devices, but also of communicating (connected) devices. Both local users and remote communicators could benefit from enhanced trust and confidence when using or communicating with computer platforms. Existing security technologies, such as user authentication and access control, cryptographic co-processors, and operating systems with different security services, are helpful in general but not suitable on their own for establishing the trust and confidence required. Computing security is a race between methods for constructing and breaching secure interaction. The TCPA has proposed a quantum leap in security, based on a novel but essentially straightforward concept. The TCPA has proposed a trusted computing platform solution based on tamper-resistant hardware physically located inside the platform. This tamper-resistant hardware provides the computer platform with a "root of trust," and it supports a new and important security feature, namely integrity challenge of the platform. The integrity challenge feature helps to build a chain of trust, which allows local and remote users to verify whether selected functions and resources of the computing platform have been installed and are operating in a way that satisfies them. At the time of this writing (2002), the first steps have already been made toward manufacture of Trusted Platforms. Several manufacturers have announced TPM-chip products. This book has been written to appeal to a wide audience. Different parts of the book are targeted to different types of readers and can be read in conjunction with the other parts or alone. There are four parts, each containing several chapters, as follows: Part 1 Introducing Trusted Platform Technology : This is the only part you need to read if you just want an overview of what Trusted Platforms and TCPA are all about. It is for anyone who wishes to understand the difference between a Trusted Computer and a computer that includes conventional security features! This first part includes three chapters. Chapter 1 explains the basics of Trusted Platforms and their context. Chapter 2 gives examples of scenarios that are enabled by exploitation of the technology. Chapter 3 explains Trusted Platform technology itself in more detail, but still at a higher level than is addressed by the TCPA specification. Part 2 Trust Mechanisms in a Trusted Platform : This part is a companion to the TCPA specification. It gives a more detailed description of the most important features of TCPA technology than is given in Part 1, going to the functional description level for those who wish to understand the advantages and overheads of Trusted Platforms. Along with Part 1, this part is of interest to organizations engaged in legal, financial, and governmental activities or for any business in which trusted interaction in the virtual world is of great importance. Part 3 Trusted Platforms in Practice : This, along with Part 2, is particularly useful for those developers or technical people with a good understanding of security who are interested in using Trusted Platforms. Note that Chapter 11 is recommended reading for everyone. Part 4 Trusted Platforms for Organizations and Individuals : This part describes examples of the use of Trusted Platforms in organizational contexts, as well as their use by individuals. Appendices : Here, you'll find background material on the Trusted Computing Platform Alliance, the philosophy of trust, and basic cryptographic concepts. We have tried to make each part and each chapter self-contained, so you may find a certain amount of necessary repetition of information, for which we apologize. The book was written by a team of authors working on the same research project. It was edited by Siani Pearson. We would like to acknowledge some of the specific contributions by individual authors: Boris Balacheff to Parts 2 and 3 and technical review, Liqun Chen to Parts 2 and 4 and the appendices, Siani Pearson to Parts 1 and 4 and the appendices, David Plaquin to Part 3 and the book's figures, and Graeme Proudler to Parts 1 and 2 and general review.

用户评价

阅读《Trusted Computing Platforms》这本书，我仿佛置身于一个由代码和加密构建的精密世界。它并非一本泛泛而谈的安全读物，而是深入到信任计算平台的每一个技术细节。我对书中关于“硬件信任根”（Root of Trust for Hardware）的讲解尤为着迷。作者用清晰的逻辑，阐述了TPM芯片作为硬件层面的安全基础，如何确保平台启动的完整性和安全性。尤其是对“度量链”（Measurement Chain）的剖析，让我明白了从BIOS、UEFI到操作系统加载器，每一个关键组件的哈希值如何被安全地记录在PCR（Platform Configuration Register）中。这种链式验证机制，极大地增强了我们对系统完整性的信心。书中对于“远程证明”（Remote Attestation）的详尽介绍，更是让我看到了信任计算在保障远程访问和数据安全方面的巨大潜力。它详细描述了如何利用TPM的密钥和签名功能，让远程服务器能够准确地验证本地计算平台的身份和安全状态。这对于金融、医疗等对安全性要求极高的行业，无疑具有划时代的意义。尽管书中涉及大量专业术语和技术概念，但作者的叙述风格平实且富有条理，使得我能够逐步深入理解这些复杂的技术原理。

《Trusted Computing Platforms》这本书，给我带来的是一种“拨云见日”的顿悟。对于信任计算这一概念，我过去总觉得有些虚无缥缈，但本书以其严谨的逻辑和丰富的实例，将这一概念具象化、清晰化。我尤其喜欢书中关于“平台完整性度量”的章节。作者用通俗易懂的语言，解释了TPM芯片如何对启动过程中各个组件进行度量，并将其存储在PCR寄存器中。这种“度量链”的概念，让我能够清晰地看到，从BIOS到引导加载程序，再到操作系统内核，每一个环节的安全状态都能被精确地记录下来。这对于发现和阻止潜在的恶意篡改，提供了非常有效的手段。书中对于“远程证明”机制的深入讲解，更是让我看到了信任计算在构建安全分布式系统中的巨大价值。它详细阐述了如何通过TPM生成加密签名，向远程服务器证明本地平台的安全状态，这对于远程管理和安全审计具有极其重要的意义。虽然这本书的篇幅不小，内容也相当丰富，但我发现自己越读越有兴趣，越读越觉得豁然开朗。它不仅仅是一本技术手册，更是一本关于如何构建可信计算环境的“思想指南”。

读完《Trusted Computing Platforms》这本书，我最大的感受是其理论深度与实践指导的完美融合。它并没有停留在对TCG标准和TPM芯片的简单介绍，而是深入探究了信任计算平台背后的一系列复杂机制。我印象最深刻的是关于“度量链”（Measurement Chain）的阐述，作者通过一系列严谨的论证和图示，清晰地展示了从硬件启动到操作系统加载过程中，每一个环节如何被安全地度量和记录。这种严谨的追溯机制，对于确保系统的完整性和防范潜在的恶意篡改，提供了强有力的技术支撑。书中对于“远程证明”（Remote Attestation）的详细解读，更是让我眼前一亮。它详细介绍了如何利用TPM的安全特性，让远程服务器能够验证本地计算平台的真实性和安全性状态，这对于构建高度安全的分布式系统和云服务至关重要。我曾参与过一些涉及敏感数据传输的项目，当时对于如何确保传输端的设备安全一直感到头疼，而这本书提供的解决方案，让我看到了新的可能性。更让我惊喜的是，作者还探讨了信任计算平台在应对新型安全威胁，如供应链攻击和固件漏洞等方面的潜在作用。虽然书中的某些技术细节对我而言还需要进一步的消化和理解，但其所提出的创新性思路和前瞻性观点，无疑为我未来的研究方向提供了重要的启示。

这部《Trusted Computing Platforms》的书籍，让我对“信任”这个词有了全新的解读。过去，我习惯于将信任视为一个绝对的概念，要么信任，要么不信任。然而，本书却教会我，信任是可以被构建、被度量、被验证的。书中对于TPM芯片在构建“硬件信任根”方面所扮演角色的详细介绍，让我深刻理解了为何从物理层面上建立信任是如此重要。当TPM作为硬件安全模块，能够独立于CPU和主板的其他组件运行，并生成不可篡改的度量值时，整个平台的安全性就有了坚实的基础。我尤其欣赏书中对“度量链”的阐释，它将启动过程中的各个环节——从BIOS、UEFI，到操作系统加载器，再到内核——都纳入了可度量的范围。这种层层递进的度量机制，使得任何对启动过程的恶意篡改都能被及时发现。此外，书中关于“远程证明”的章节，为我提供了构建安全远程访问和协作的全新视角。它解释了如何利用TPM的密钥和签名功能，让远端服务器能够确信本地平台是安全且未被感染的。这对于提升企业网络安全和云计算的安全性，具有革命性的意义。

作为一名在信息安全领域摸爬滚打多年的老兵，我最近有幸拜读了一本名为《Trusted Computing Platforms》的著作，即便这本书的某些章节与我过往的阅读经验有所侧重，它依然为我打开了新的认知维度。这本书并非一本浅尝辄止的入门指南，而是深入到信任计算平台技术的核心，从概念的溯源到实际的应用落地，再到未来发展的前景，都进行了细致入微的剖析。我尤其欣赏书中对于“信任”这一概念的哲学式探讨，它挑战了我们对传统安全模型中“绝对信任”的固有认知，转而强调了“可信”的构建过程和动态验证。这种视角不仅为理解技术提供了深层理论基础，也促使我重新审视自己在实际工作中对安全策略的制定和执行。书中大量引用了学术界的最新研究成果，并且对行业标准和规范进行了详尽的解读，这对于希望深入理解TCG（Trusted Computing Group）及其相关技术的专业人士来说，无疑是一笔宝贵的财富。它并非仅仅罗列枯燥的技术细节，而是通过清晰的逻辑线条，将复杂的概念层层剥离，使得即便是初次接触TCG相关技术的人，也能逐渐领略其精髓。尤其是在关于硬件信任根（Root of Trust for Hardware）的章节，作者以生动的比喻和翔实的案例，将TPM（Trusted Platform Module）芯片的神秘面纱一一揭开，让原本抽象的技术原理变得触手可及。我曾一度认为，TCG技术离我们普通用户甚为遥远，更多是企业级应用才会涉及的领域，但这本书的出版，让我看到了其在消费级产品和个人设备中应用的巨大潜力，这无疑是一个令人振奋的发现。

在阅读《Trusted Computing Platforms》这本书的过程中，我发现它并非仅仅是罗列一堆技术术语，而是为我构建了一个完整的信任计算技术生态图景。书中关于TPM芯片在“平台完整性度量”中的核心作用的阐述，让我对“安全启动”的概念有了更深刻的理解。作者通过对PCR（Platform Configuration Register）的详细讲解，清晰地展示了如何将启动过程中各个软件组件的哈希值记录下来，从而形成一条不可篡改的“度量链”。这让我明白了，即使是看似简单的系统启动过程，也蕴藏着巨大的安全挑战，而信任计算平台正是应对这些挑战的关键。书中对“远程证明”（Remote Attestation）机制的深入剖析，更是让我看到了信任计算在构建高度安全分布式系统中的巨大价值。它详细介绍了如何利用TPM的密钥和签名功能，让远程服务器能够准确地验证本地计算平台的身份和安全状态。这对于提升金融、军事等关键领域的安全性，具有不可估量的意义。尽管这本书的内容相当丰富且技术性强，但作者的讲解方式条理清晰，并且穿插了许多实际应用案例，使得我能够更好地理解这些抽象的技术概念，并将其与实际工作中的安全需求相结合。

在阅读《Trusted Computing Platforms》的过程中，我发现这本书的价值远超我的预期。它不仅详细阐述了信任计算平台的理论基础，更重要的是，它深入剖析了这些技术在实际场景中的应用。书中对于“安全启动”（Secure Boot）和“可信平台模块”（TPM）在操作系统加载和应用程序运行时扮演的关键角色的描述，让我对操作系统安全有了更深刻的理解。我尤其对书中关于“度量链”在检测恶意软件篡改和系统后门方面的应用案例印象深刻。作者通过详实的步骤解析，展示了如何利用PCR寄存器记录启动组件的哈希值，并通过远程证明来验证这些记录的真实性。这为我解决过去在服务器安全管理中遇到的“信任危机”提供了一条清晰的思路。此外，书中还探讨了信任计算平台在物联网（IoT）安全领域的巨大潜力，比如如何通过TPM芯片来保障智能家居设备的身份认证和数据安全。这让我看到了未来智能设备发展的方向，以及如何在这个日益互联的世界中构建一个更加可信的网络环境。尽管书中部分章节的技术细节较为专业，需要读者具备一定的计算机安全背景，但其所提供的系统性知识和前瞻性洞察，绝对是值得投入时间和精力去深入研究的。

《Trusted Computing Platforms》这本书，给我带来的不仅仅是知识的增量，更是思维方式的转变。在阅读之前，我对信任计算平台的认知仅限于一些零散的概念，但本书系统地梳理了其背后的理论框架和技术细节。我特别欣赏书中关于TPM芯片在“平台完整性度量”中的作用的详细描述。作者通过对PCR（Platform Configuration Register）的深入解析，清晰地展示了如何在系统启动过程中，对各个软件组件进行安全度量，并将其记录下来。这种“度量链”的构建，让我明白，我们不再仅仅依赖于操作系统的安全软件，而是从硬件层面就开始建立起一道不可逾越的安全屏障。书中关于“远程证明”的章节，更是让我看到了信任计算在现代网络安全中的核心地位。它详细阐述了如何利用TPM的加密和签名功能，让远程实体能够验证本地计算平台的真实性和完整性。这对于构建高度安全的分布式系统、云服务和物联网设备至关重要。虽然书中部分章节的技术深度较高，但作者的讲解方式非常清晰，并且辅以大量的图示和案例，使得即便是复杂的技术概念也能被有效地理解。

《Trusted Computing Platforms》这本书，给我的感觉是一种“润物细无声”的教育。它不像一些技术书籍那样，上来就堆砌大量的专业术语和晦涩的公式，而是以一种更加平缓、更具引导性的方式，带领读者一步步走进信任计算的世界。我特别欣赏书中在讲解TPM安全芯片的工作原理时，所采用的类比和故事化叙述。例如，作者将TPM比作一个“数字保险箱”，将平台的状态信息比作“指纹”，这些生动的比喻，极大地降低了技术理解的门槛，让我能够更轻松地掌握TPM的加密、解密、签名和验证等核心功能。在探讨平台完整性度量时，书中详细阐述了PCR（Platform Configuration Register）的作用，以及如何通过度量链来构建一个可信的启动过程。这让我对“启动过程中的安全”有了全新的认识，过去我总以为只要系统启动成功，就万事大吉了，但这本书让我明白，即使是启动过程本身，也可能成为攻击者下手的地方。这本书的价值在于，它不仅仅是传授知识，更是培养一种安全思维。它促使我反思，在我们日常使用的电脑、手机，甚至物联网设备中，是否存在潜在的安全隐患，以及如何通过信任计算平台来构建更安全的生态环境。

《Trusted Computing Platforms》这本书，给我最大的启发在于，它将“信任”从一个模糊的概念，转化为了一套可量化、可验证的技术体系。书中对TPM芯片在构建“硬件信任根”方面所扮演角色的深入剖析，让我深刻认识到，真正的安全必须从物理层面上建立起来。我特别欣赏书中关于“度量链”（Measurement Chain）的详细讲解，它清晰地展示了如何通过PCR（Platform Configuration Register）来记录系统启动过程中每个阶段的软件组件的哈希值。这种逐层验证的方式，使得任何潜在的恶意篡改都无处遁形。此外，书中对于“远程证明”（Remote Attestation）的阐述，也为我打开了新的视野。它详细解释了如何利用TPM的加密和签名功能，让远程服务器能够确信本地计算平台的安全性和完整性。这对于构建安全的远程办公环境、云服务以及物联网设备至关重要。尽管本书的技术深度很高，但作者的讲解方式非常严谨且富有逻辑性，并且辅以大量的图表和实例，让我能够循序渐进地掌握这些复杂的技术概念。