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Cryptographic Systems

What are Cryptographic Systems?

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Confidentiality has always been the major goal of cryptography. However, today much more is expected, namely - authentication, integrity, and non-repudiation. Cryptographic systems have evolved as a packaged set of countermeasures for protecting dialogues.

Cryptographic systems typically include the following for each dialog:

handshaking stage 1 - initial negotiation of security parameters for the chosen cipher suite
handshaking stage 2 - mutual authentication
handshaking stage 3 - secure exchange of keys and other secrets
ongoing communication stage - message by message

  • confidentiality
  • authentication
  • integrity

Two important cryptographic systems are IPSec and SSL.

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