The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 28, 2017
Filed:
Feb. 26, 2015
Altera Corporation, San Jose, CA (US);
Bruce Pedersen, Sunnyvale, CA (US);
Altera Corporation, San Jose, CA (US);
Abstract
Integrated circuits may be programmed using configuration data to implement desired custom logic functions. The configuration data may be generated using a logic design system in the form of a configuration bit stream. The logic design system may generate a hash value for the stream by performing multiple hashing operations on the stream in a direction from a trailing end to a leading end of the stream in a reverse direction with respect to the order of the stream. The system may append the generated hash value to the leading end of the stream, may encrypt the hash value, and may provide the stream to an integrated circuit. The integrated circuit may decrypt or otherwise authenticate the hash value, may generate multiple test hash values for the stream and may compare the test hash values to hash values in the stream to determine whether the stream is authentic.