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:
Jan. 18, 2011
Filed:
Jan. 13, 2006
Camil Fayad, Poughkeepsie, NY (US);
John K. LI, Woodstock, NY (US);
Siegfried Sutter, Boeblingen, DE;
Camil Fayad, Poughkeepsie, NY (US);
John K. Li, Woodstock, NY (US);
Siegfried Sutter, Boeblingen, DE;
International Business Machines Corporation, Armonk, NY (US);
Abstract
Electronic circuit chips which include cryptography functions are arranged in multichip configurations through the utilization of a shared external memory. Security of the chips is preserved via a handshaking protocol which permits each chip to access limited portions of the memory as defined in a way that preserves the same high security level as the tamper proof chips themselves. The chips may be operated to work on different tasks or to work on the same task thus providing a mechanism for trading off speed versus redundancy where desired.