Encryption-Based Protection Protocols for Interactive User-Computer Communication

Abstract

This thesis develops a complete set of protocols, which utilize a block cipher, e.g., the NBS data encryption standard, for protection interactive user-computer communication over physical unsecured channels. The use of the block cipher protects against disclosure of message contents to an intruder, and the protocols provide for the detection of message stream modification and denial of message service by an intruder. The protocols include facilities for key distribution, two-way login authentication, resynchronization following channel disruption, and expedition of high priority messages. The thesis presents designs for modules to implement the protocols, both in a terminal and in a host computer system, and discusses the results of a test implementation of the modules on Multics.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1976
Accession Number
ADA026911

Entities

People

  • Stephen T. Kent

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Cyber
  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Authentication
  • Communication Channels
  • Communication Systems
  • Computer Communications
  • Computer Programming
  • Computer Science
  • Computers
  • Cryptography
  • Cybersecurity
  • Data Encryption
  • Department Of Defense
  • Detection
  • Host Computers
  • Secure Communications
  • Security Protocols
  • Standards
  • Terminals

Fields of Study

  • Computer science

Readers

  • Computer Networking
  • Cybersecurity.
  • Radio communications and signal processing.