دانلود کتاب خدمات گواهی دایرکتوری فعال – مدیریت و تولید گواهی دیجیتال در شبکه مایکروسافت

This book contains two very different parts. The first part covers the concepts, algorithms, and protocols used in modern cryptography and Public Key Infrastructure (PKI). It covers essentially the same information I taught in the VeriSign training classes (except for the VeriSign-specific content). We charged roughly $1000 a day for a four-day course, so you are getting quite a deal considering the very reasonable cost of this book. Cryptography is an arcane area of technology that has grown vastly more powerful with the advent of digital computers. One area of it involves scrambling information using algorithms and cryptographic keys to provide privacy, authentication, and detection of tampering. This is used in many kinds of digital communications today. We could not have the modern Internet today without it. TLS (formerly called SSL) is widely used to secure not only web traffic but also email and other protocols. S/MIME can provide true end-to-end encryption and sender-to-recipient authentication in email, although I have also pioneered using it in file transfer. PKI is a technology developed to do secure cryptography key management, in technologies such as TLS. Public keys must be wrapped in a digital certificate, where the identifying information has been validated. The certificate is digitally signed by a trusted third party (Certification Authority), such as VeriSign. VeriSign is no longer around, but there are other companies doing the same thing today, such as Entrust, DigiCert, and Sectigo. Digital certificates provide trust in cryptographic systems.