Patent · US Active

Efficient cryptographically secure control flow integrity protection

US10536264B2 · kind B2 · utility

1Cited by

0References

20Claims

0Family size

Assignee

Intel Corporation · US

Inventors

Santosh Ghosh · Hillsboro, US
Manoj Sastry · Portland, US
Jesse Walker · Portland, US
Ravi L. Sahita · Portland, US
Abhishek Basak · Hillsboro, US
Vedvyas Shanbhogue · Austin, US
David M. Durham · Beaverton, US

Key dates

Filing date	Dec 28, 2016
Grant date	Jan 14, 2020
Priority date	—
Expiry date	Dec 21, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG06F21/72
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Embodiments include a computing processor control flow enforcement system including a processor, a block cipher encryption circuit, and an exclusive-OR (XOR) circuit. The control flow enforcement system uses a block cipher encryption to authenticate a return address when returning from a call or interrupt. The block cipher encryption circuit executes a block cipher encryption on a first number including an identifier to produce a first encrypted result and executes a block cipher encryption on a second number including a return address and a stack location pointer to produce a second encrypted result. The XOR circuit performs an XOR operation on the first encrypted result and the second encrypted result to produce a message authentication code tag.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.