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:
Dec. 04, 2012
Filed:
Aug. 05, 2009
Lei Fan, Beijing, CN;
Cheng Chen, Beijing, CN;
Lei Fan, Beijing, CN;
Cheng Chen, Beijing, CN;
Lenovo (Beijing) Limited, Beijing, CN;
Abstract
The present invention provides a portable memory, comprising: a key storage unit for storing a register key for the portable memory; a key receiving unit for receiving a first key entered by a user and generating a second key based on the first key; an identification unit for comparing the second key with the register key to obtain a comparison result; a key generation unit for generating an encryption/decryption key if the comparison result indicates that the second key matches the register key; a chip for encrypting/decrypting a data stream exchanged between a computer and the portable memory by using the encryption/decryption key. The portable memory constitutes a system itself, and thus can perform encryption/decryption operations independent of external systems, resulting in a reduced cost. The present invention also provides a method of encrypting a portable memory.