Operation Modes (OM)

OM tells you how to encrypt a long message (constructed from many "small" blocks) using a BC. The same BC may be secure or insecure, depending on the OM involved in its implementation.

Operation modes (OM) in Crypto Go

OM cards allow building a Crypto Set CS2 (Confidentiality) when combined with a BC card.

OM combined with a BC to build a CS2

Crypto Go contains 13 OM cards, considering the following 7 concrete tools:

  • EME
  • FFX
  • OFB
  • CFB
  • CTR
  • CBC
  • ECB

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