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:
Oct. 19, 2010
Filed:
Dec. 29, 2005
David Otto Lewis, Rochester, MN (US);
Jeffrey Earl Remfert, Rochester, MN (US);
David Otto Lewis, Rochester, MN (US);
Jeffrey Earl Remfert, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A smart chip protection system contains a unique public/private identity key pair and uses a separate public/private signature key pair. The identity private key is stored in permanent, secure storage such that it can not be read outside the chip. An issuing entity generates a descriptor containing the identity public key, attribute data, and a digital signature. The digital signature is generated by enciphering a derivation of the identity public key and the attribute data with the signature private key known only to the issuer. The authenticity of the descriptor data is verified by decrypting the signature with the signature public key using a known algorithm, and comparing the result to the derivation of the descriptor data. The identity of the object can be verified requesting the smart chip to perform an encryption/decryption operation using its identity private key, and performing the complement using the public key.