Information technology. Security techniques. Entity authentication - Mechanisms using zero knowledge techniques

Information technology. Security techniques. Entity authentication - Mechanisms using zero knowledge techniques

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1   Scope

This part of ISO/IEC 9798 specifies entity authentication mechanisms using zero-knowledge techniques:
  • — mechanisms based on identities and providing unilateral authentication;
  • — mechanisms based on integer factorization and providing unilateral authentication;
  • — mechanisms based on discrete logarithms with respect to numbers that are either prime or composite, and providing unilateral authentication;
  • — mechanisms based on asymmetric encryption systems and providing either unilateral authentication, or mutual authentication;
  • — mechanisms based on discrete logarithms on elliptic curves and providing unilateral authentication.
These mechanisms are constructed using the principles of zero-knowledge techniques, but they are not necessarily zero-knowledge according to the strict definition for every choice of parameters.