公开(公告)号：US12032704B2

公开(公告)日：2024-07-09

申请号：US17462698

申请日：2021-08-31

Applicant: Google LLC

Inventor： Marius P. Schilder ,  Timothy Chen ,  Scott D. Johnson ,  Derek L Martin

IPC: G06F21/51 ,  G06F21/56 ,  G06F21/57 ,  H04L9/06

CPC classification number: G06F21/577 ,  G06F21/51 ,  G06F21/563 ,  G06F21/567 ,  G06F21/575 ,  H04L9/0643

Abstract: Systems, apparatuses, and methods for improving security of a silicon-based system by creating a glitch-resistant process for executing a software code block on the silicon-based system are disclosed. An example method may begin by marking the software code block as non-executable. Second, intent to execute the software code block is registered with a staging register. Third, the software code block is compressed into a compression constant. Fourth, the compression constant is compared with a first predetermined value using two comparators. Fifth, responsive to the comparators providing a true result after comparison, the software code block is marked as executable to allow the software code block to execute. In another aspect, the example method may be repeated for n>1 iterations, and in each iteration i, an ith software code block is compressed into an ith compression constant that is compared to an ith predetermined value.