ITU-T X.509-2008 Information technology ?Open systems interconnection ?The Directory: Public-key and attribute certif

pdf标准 ITU-T X.509-2008 Information technology ?Open systems interconnection ?The Directory: Public-key and attribute certif

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I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n ITU-T U n i o n X.509 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (11/2008) SERIES X: DATA NETWORKS, OPEN SYSTEM COMMUNICATIONS AND SECURITY Directory Information technology – Open systems interconnection – The Directory: Public-key and attribute certificate frameworks ITU-T Recommendation X.509 ITU-T X-SERIES RECOMMENDATIONS DATA NETWORKS, OPEN SYSTEM COMMUNICATIONS AND SECURITY PUBLIC DATA NETWORKS Services and facilities Interfaces Transmission, signalling and switching Network aspects Maintenance Administrative arrangements OPEN SYSTEMS INTERCONNECTION Model and notation Service definitions Connection-mode protocol specifications Connectionless-mode protocol specifications PICS proformas Protocol Identification Security Protocols Layer Managed Objects Conformance testing INTERWORKING BETWEEN NETWORKS General Satellite data transmission systems IP-based networks MESSAGE HANDLING SYSTEMS DIRECTORY OSI NETWORKING AND SYSTEM ASPECTS Networking Efficiency Quality of service Naming, Addressing and Registration Abstract Syntax Notation One (ASN.1) OSI MANAGEMENT Systems Management framework and architecture Management Communication Service and Protocol Structure of Management Information Management functions and ODMA functions SECURITY OSI APPLICATIONS Commitment, Concurrency and Recovery Transaction processing Remote operations Generic applications of ASN.1 OPEN DISTRIBUTED PROCESSING INFORMATION AND NETWORK SECURITY SECURE APPLICATIONS AND SERVICES CYBERSPACE SECURITY SECURE APPLICATIONS AND SERVICES For further details, please refer to the list of ITU-T Recommendations. X.1–X.19 X.20–X.49 X.50–X.89 X.90–X.149 X.150–X.179 X.180–X.199 X.200–X.209 X.210–X.219 X.220–X.229 X.230–X.239 X.240–X.259 X.260–X.269 X.270–X.279 X.280–X.289 X.290–X.299 X.300–X.349 X.350–X.369 X.370–X.379 X.400–X.499 X.500–X.599 X.600–X.629 X.630–X.639 X.640–X.649 X.650–X.679 X.680–X.699 X.700–X.709 X.710–X.719 X.720–X.729 X.730–X.799 X.800–X.849 X.850–X.859 X.860–X.879 X.880–X.889 X.890–X.899 X.900–X.999 X.1000–X.1099 X.1100–X.1199 X.1200–X.1299 X.1300–X.1399 INTERNATIONAL STANDARD ISO/IEC 9594-8 ITU-T RECOMMENDATION X.509 Information technology – Open systems interconnection – The Directory: Public-key and attribute certificate frameworks Summary ITU-T Recommendation X.509 | ISO/IEC 9594-8 defines a framework for public-key certificates and attribute certificates. These frameworks may be used by other standards bodies to profile their application to Public Key Infrastructures (PKI) and Privilege Management Infrastructures (PMI). Also, this Recommendation | International Standard defines a framework for the provision of authentication services by Directory to its users. It describes two levels of authentication: simple authentication, using a password as a verification of claimed identity; and strong authentication, involving credentials formed using cryptographic techniques. While simple authentication offers some limited protection against unauthorized access, only strong authentication should be used as the basis for providing secure services. Source ITU-T Recommendation X.509 was approved on 13 November 2008 by ITU-T Study Group 17 (2009-2012) under ITU-T Recommendation A.8 procedure. An identical text is also published as ISO/IEC 9594-8. ITU-T Rec. X.509 (11/2008) i FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-T's purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression "Administration" is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure e.g. interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words "shall" or some other obligatory language such as

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