Security unit and method for protecting data

Security unit and method for protecting data

  • CN 101,023,433 A
  • Filed: 06/30/2005
  • Published: 08/22/2007
  • Est. Priority Date: 07/02/2004
  • Status: Active Application
First Claim
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1. safe unit (30) that is used for protected data (D1+D2);

  • smart card or be the integrated circuit of smart card at least particularly;

    described data (D1+D2) are divided into first data (D1) and second data (D2);

    described safe unit (30) and at least one present processing unit (42) and exchange at least one key;

    at least one agreed in advance session key particularly, to carry out following operation;

    -second data (D2) of encrypting are decrypted, and/or-second data (D2) of initial encryption, deciphering are then encrypted again.

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