×

Linear masking circuits for side-channel immunization of advanced encryption standard hardware

  • US 10,256,973 B2
  • Filed: 09/30/2016
  • Issued: 04/09/2019
  • Est. Priority Date: 09/30/2016
  • Status: Active Grant
First Claim
Patent Images

1. An apparatus comprising:

  • a first circuitry operable to convert a value on an input of the first circuitry into a value on an output of the first circuitry in accordance with an encryption matrix;

    a second circuitry operable to provide a sequence of pseudo-random numbers on a first output of the second circuitry and a registered copy of the sequence on a second output of the second circuitry; and

    a third circuitry operable to provide an XOR of a value on the output of the first circuitry and a value on the first output of the second circuitry onto an output of the third circuitry coupled to an input of a fourth circuitry.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×