Document Type
Article
Publication Date
June 2020
Patent Number
10680797
CPC
H04L 9/003, H04L 9/0618, G06F 21/602, G06F 21/755, H03K 19/0019
Abstract
Methods and systems are provided for a security adaptive (SA) voltage converter that receives input power from a power source and provides power to a cryptographic system. The SA voltage converter triggers countermeasures against leakage power analysis (LPA) attacks that slow down an operating frequency of the cryptographic circuit. When an LPA attack is detected, a discharging resistor sinks redundant current to alter the signature of load power dissipation of at the input to the SA voltage converter system. The SA voltage converter includes a converter reshuffling converter. The power dissipation induced by the discharging resistor, as measured at the input received from the power source, is scrambled by the SA voltage converter to increase noise inserted into the input power and to alter the power profile that is measured for the cryptographic circuit.
Application Number
15/967254
Recommended Citation
Kose, Selcuk and Yu, Weize, "Security-adaptive voltage conversion as a lightweight counter measure against LPA attacks" (2020). USF Patents. 1175.
https://digitalcommons.usf.edu/usf_patents/1175
Assignees
University of South Florida
Filing Date
04/30/2018
