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Embedded cryptographic system

  • US 20020116624A1
  • Filed: 01/28/2002
  • Published: 08/22/2002
  • Est. Priority Date: 02/16/2001
  • Status: Abandoned Application
First Claim
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1. A cryptographic system (1) comprising first cryptographic algorithm means (2) for enabling cryptographic operations, input/output means (3, 4) for receiving input streams and sending output streams wherein said input streams are transformed to said output streams by said cryptographic operations, at least one test plaintext Pi and for each test plaintext Pi a corresponding test ciphertext Ci, receiving means (5) for receiving a control stream which is including at least one apoptosis key Ki, checking means (6) for checking whether said at least one test ciphertext Ci is the enciphered image of the corresponding test plaintext Pi under the cryptographic operation of said first cryptographic algorithm means (2) when using said apoptosis key Ki, switching means (7) for stopping said cryptographic operations with said first cryptographic algorithm means (2), wherein said stopping by said switching means (7) is triggered by said checking means (6).

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