X.500

The X.500 standard of the ITU -T is a term used in computer technology, he describes the structure of a directory service. In this directory can be accessed globally. There is no complete implementation of X.500, since the standard is very comprehensive and touches on an ISO / OSI stack, which made ​​it difficult to implement and computationally intensive and thus prevented a hit. A generic directory service based on X.500 had developed in the early 1990s between universities and research institutions and is still in use.

The X.509 standard for a cryptographic public key infrastructure, which was originally based on X.500, achieved a wide circulation. A common protocol based on X.500, but does not meet all of its requirements, LDAP is.

Norms and Standards

  • X.Imp500 Directory Implementors ' Guide
  • X.500 Information technology - Open Systems Interconnection - The Directory: Overview of concepts, models and services
  • X.501 Information technology - Open Systems Interconnection - The Directory: Models
  • X.509 Information technology - Open Systems Interconnection - The Directory: Public -key and attribute certificate frameworks
  • X.511 Information technology - Open Systems Interconnection - The Directory: Abstract service definition
  • X.518 Information technology - Open Systems Interconnection - The Directory: Procedures for distributed operational
  • X.519 Information technology - Open Systems Interconnection - The Directory: Protocol specifications
  • X.520 Information technology - Open Systems Interconnection - The Directory: Selected attribute types
  • X.521 Information technology - Open Systems Interconnection - The Directory: Selected object classes
  • X.525 Information technology - Open Systems Interconnection - The Directory: Replication
  • X.530 Information technology - Open Systems Interconnection - The Directory: Use of systems management for administration of the Directory
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