17524103. LOGIC CIRCUIT LOCKING WITH SELF-DESTRUCT simplified abstract (International Business Machines Corporation)

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LOGIC CIRCUIT LOCKING WITH SELF-DESTRUCT

Organization Name

International Business Machines Corporation

Inventor(s)

Effendi Leobandung of Stormville NY (US)

LOGIC CIRCUIT LOCKING WITH SELF-DESTRUCT - A simplified explanation of the abstract

This abstract first appeared for US patent application 17524103 titled 'LOGIC CIRCUIT LOCKING WITH SELF-DESTRUCT

Simplified Explanation

The abstract describes an approach for validating a logic key in an integrated circuit (IC). The approach involves an IC with a key input circuit, a fuse check circuit, a charge pump circuit, a switch matrix, and one or more antifuse circuits.

  • The IC includes a key input circuit, a fuse check circuit, a charge pump circuit, a switch matrix, and one or more antifuse circuits.
  • A secret key is inputted by a user and the status of the antifuse circuit is determined.
  • The secret key is validated and if it does not match the original secret key, the antifuse threshold is checked.
  • If the antifuse threshold has been reached, the IC is disabled. If the secret key matches the original secret key, the IC is enabled.
  • If the antifuse threshold has not been reached, the antifuse circuit is activated.

Potential applications of this technology:

  • Secure authentication systems
  • Secure communication systems
  • Secure storage systems

Problems solved by this technology:

  • Unauthorized access to ICs and their data
  • Counterfeiting and tampering of ICs
  • Protection of sensitive information stored in ICs

Benefits of this technology:

  • Enhanced security for ICs and their data
  • Protection against unauthorized access and tampering
  • Reliable validation of secret keys


Original Abstract Submitted

An approach for validating a logic key in an IC (integrated circuit) is disclosed. One approach includes an IC comprising of key input circuit couple to a fuse check circuit; charge pump circuit coupled to the fuse check circuit and a switch matrix; and one or more antifuse circuit connected to the switch matrix. Another approach comprises of a method including, inputting a secret key by a user; determining status of one or more antifuse circuit; validating the secret key; in responsive to the secret key not matching an original secret key, determining whether antifuse threshold has been reached; in responsive to determining that the antifuse threshold has been reached, disabling the IC; in responsive to the secret key matching the original secret key, enabling the IC; and in responsive to determining that the antifuse threshold has not been reached, activating the antifuse circuit.

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