PATENT CLAIM ANALYSIS

Application Number: 15935279
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["713", "189000"]

Abstract:
Methods and systems for masking certain cryptographic operations in a manner designed to defeat side-channel attacks are disclosed herein. Squaring operations can be masked to make squaring operations indistinguishable or less distinguishable from multiplication operations. In general, squaring operations are converted into multiplication operations by masking them asymmetrically. Additional methods and systems are disclosed for defeating DPA, cross-correlation, and high-order DPA attacks against modular exponentiation.

Claim (Index 1):
A system comprising:\n at least one processor; and at least one memory; wherein the at least one memory contains software that, when executed on the processor, asymmetrically masks a modular exponentiation operation to improve resistance to Simple Power Analysis (SPA) attacks, the software comprising code configured to perform the steps of:\n receiving at least one input, wherein the input is one of a masked or unmasked value; \n defining a left-hand-side (LHS) parameter using at least one of the inputs; \n defining a right-hand-side (RHS) parameter using at least one of the inputs; \n calculating a plurality of intermediate values using the LHS parameter, the RHS parameter, and a mask value; and \n generating an output value based on the plurality of intermediate values and a fix value, wherein output value is based on a multiplication product of an unmasked value of the input used to define the LHS parameter and of an unmasked value of the input used to define the RHS parameter.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 90.0
- Lexical Diversity: 1.46939
- Patent Class: 713.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13835402', '14072155', '15392197', '11484852', '12886051']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.3875340992317999
- 35 USC 102 Novelty (BERT): 0.6147514812998717
- Combined Prediction Score: 0.4102558374386071
- Mean Citation Score: 283.444786
- Max Citation Score: 546.34686
- Similarity Product: 514.9242927791548

Labels:
- Claim Label 101: 0
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 0

Dataset: test