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:
Apr. 14, 2009
Filed:
Aug. 03, 2006
Thomas J. Mihm, Jr., Crystal Lake, IL (US);
Eric R. Uner, Carpentersville, IL (US);
Thomas J. Mihm, Jr., Crystal Lake, IL (US);
Eric R. Uner, Carpentersville, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A secure memory system binds an encrypted first data value stored in a memory with a state of the memory by selecting, at random, an address in the memory and mixing a second data value, stored at the address, with a hash value of the first data value to produce a split value. The address, split value and first data value are encrypted and stored in the memory. To detect tampering of the memory, the encrypted address is decrypted and the corresponding value read from the memory and used to recover a hash value from the decrypted split value. The recovered hash value is then compared with the original hash value.