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:
May. 10, 2011
Filed:
Apr. 05, 2007
Chung-hsun MA, Hsin-Chu Hsien, TW;
Chin-ling Wang, Hsin-Chu Hsien, TW;
Hon-wai NG, Hsin-Chu Hsien, TW;
Shu-hua Wang, Hsin-Chu Hsien, TW;
Chung-Hsun Ma, Hsin-Chu Hsien, TW;
Chin-Ling Wang, Hsin-Chu Hsien, TW;
Hon-Wai Ng, Hsin-Chu Hsien, TW;
Shu-Hua Wang, Hsin-Chu Hsien, TW;
Phison Electronics Corp., Hsinchu, TW;
Abstract
The present invention discloses a data access method accomplished by the following steps of: creating a predetermined password; generating a first encryption key; encrypting data based on the first encryption key; prompting for the predetermined password upon receipt of an access request; decoding a header of the NAND flash memory based on a user-entered password; examining the header to determine whether a mapping between the user-entered password and the first encryption key is defined; and decrypting and outputting the data by a decryption key when the mapping between the user-entered password and the first encryption key is defined.