Patent ID: 9430188
Filing Date: 2016-08-30
CPC Classification: G06F,H04L

Claim Text:
1. A method of operating a cryptographic device to reduce effects of power analysis attacks, the method comprising: splitting cryptographic computations in the cryptographic device into a first set of cryptographic algorithm computations and a second set of cryptographic algorithm computations and pseudo-randomly assigning the first and second sets of cryptographic algorithm computations to a first crypto-processor and at least one second crypto-processor; executing the first set of cryptographic algorithm computations with the first crypto-processor of the cryptographic device, the first set of cryptographic algorithm computations providing encryption of a first set of data to be protected with a first secret key; executing the second set of cryptographic algorithm computations with the at least one second crypto-processor of the cryptographic device for providing encryption of a second set of data different from the first set of data to be protected with a second different secret key; and generating varying power consumption from the first crypto-processor and the at least one second crypto-processor respectively based upon the execution of the first and second sets of cryptographic algorithm computations, thereby reducing the effects of power analysis attacks.