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. 12, 2010
Filed:
Jan. 17, 2007
Charles C. Lee, Cupertino, CA (US);
I-kang Yu, Palo Alto, CA (US);
Edward W. Lee, Mountain View, CA (US);
Ming-shiang Shen, Taipei Hsien, TW;
Charles C. Lee, Cupertino, CA (US);
I-Kang Yu, Palo Alto, CA (US);
Edward W. Lee, Mountain View, CA (US);
Ming-Shiang Shen, Taipei Hsien, TW;
Super Talent Electronics, Inc., San Jose, CA (US);
Abstract
A secure flash-card reader reads a user ID from a secure card and finds a matching entry with a hashed password in a user table on the reader. An encrypted key is received from a secure host that hashes and encrypts a password the user types into the host and the user's ID. A card decryption engine uses a random number to decrypt the encrypted key and recover the hashed password and user ID from the secure host, which is compared by a comparator to the hashed password and user ID from the user table. A mismatch causes an access controller to block access to encrypted data on the secure card. Flash data is transferred over a flash-serial buffer bus between flash-card controllers and a RAM buffer. An encryption engine on the flash-serial buffer bus encrypts and decrypts data and connects to a serial engine to the host.