Method to secure a software code
US11250110B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 25, 2018 |
| Grant date | Feb 15, 2022 |
| Priority date | — |
| Expiry date | Oct 17, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/1062
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method of securing a compiled software code (SC) comprising computer code instructions organized in a plurality of basic blocks, said method generating a secure software code (SSC) and comprising the steps of: •determining (S1) by a processor a portion of the software code to be protected, •inserting (S2) by the processor in a selected basic block of the software code a first sequence of instructions which when executed at runtime: computes an integrity check value on said portion of the software code to be protected and computes an index value based on said computed integrity check value, •inserting (S3) by the processor in the selected basic block of the software code an indexed array of memory addresses in which the address, when executing the secure software code, of a following basic block to be executed after the selected basic block is indexed by said index value, •inserting (S4) by the processor at the end of the selected basic block of the software code a jump instruction to the address indexed in the array by said index value computed at runtime.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.