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:
Aug. 07, 2012
Filed:
Nov. 19, 2009
Shan LU, Shenzhen, CN;
Shan Lu, Shenzhen, CN;
Tencent Technology (Shenzhen) Company Limited, Shenzhen, CN;
Abstract
An authentication method, which includes: a server sends a challenge to a client; the client obtains a first key performs a transformation on the first key utilizing a local hash function to obtain a third key, encrypts the first key and the challenge utilizing the third key to obtain a ciphertext, and sends the ciphertext to the server; the server decrypts the ciphertext utilizing a second key stored locally, obtains a decrypted first key and a decrypted challenge if the second key is the same as the third key, performs a transformation on the decrypted first key utilizing a local hash function to obtain a fourth key, the client passes the authentication if the decrypted challenge and the fourth key are respectively the same as the challenge sent by the server and the second key stored locally by the server.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile