Anti tamper encapsulation for an integrated circuit

  • US 7,005,733 B2
  • Filed: 12/26/2000
  • Issued: 02/28/2006
  • Est. Priority Date: 12/30/1999
  • Status: Expired due to Term
First Claim
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1. An integrated circuit device comprising:

  • a protective member which reduces access to the device;

    one or more sensors for sensing one or more physical parameters from the protective member; and

    a circuit which encrypts and decrypts protected data,wherein the circuit is adapted to derive encryption values from the one or more physical parameters sensed, the encryption values being essential to the process of encrypting and decrypting the protected data, such that tampering with the protective member to gain access to the circuit corrupts the encryption values.

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