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:
Jul. 23, 2019
Filed:
May. 27, 2016
Nxp B.v., Eindhoven, NL;
Joppe Willem Bos, Wijgmaal, BE;
Artur Tadeusz Burchard, Eindhoven, NL;
Jan Hoogerbrugge, Eindhoven, NL;
Wilhelmus Petrus Adrianus Johannus Michiels, Reusel, NL;
NXP B.V., Eindhoven, NL;
Abstract
A system includes a secure processor and an unsecure processor. The secure processor is configured to: split a secure scalar K into mrandom values k, where i is an integer index; randomly select m-mvalues kfor the indices m<i≤m; select mmask values δ; compute mresidues cbased upon random residues a, δ, and k, wherein π(i) is a random permutation; compute melliptic curve points Gbased upon random residues aand an elliptic point to be multiplied; receive melliptic curve points; and compute the elliptic curve scalar multiplication by combining a portion of the received elliptic curve points and removing the mask values δfrom the portion of the received elliptic curve points. The unsecure processor is configured to: receive mresidues cand elliptic curve points G; compute melliptic curve points Pbased upon the mresidues cand elliptic curve points G; and send the melliptic curve points Pto the secure processor.