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. 28, 2014
Filed:
Nov. 28, 2012
Applicant:
Huawei Technologies Co., Ltd., Shenzhen, CN;
Inventors:
Lei Xu, Beijing, CN;
Xiaoxin Wu, Beijing, CN;
Assignee:
Huawei Technologies Co., Ltd., Shenzhen, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04K 1/00 (2006.01); H04L 9/30 (2006.01); H04L 9/28 (2006.01); H04L 9/08 (2006.01); H04L 9/32 (2006.01);
U.S. Cl.
CPC ...
H04L 9/0861 (2013.01); H04L 9/3073 (2013.01); H04L 9/0827 (2013.01); H04L 2209/76 (2013.01); H04L 9/28 (2013.01);
Abstract
A proxy-based encryption method includes generating, according to a private key of a sending end and a public key of a receiving end, proxy keys that correspond to at least two proxy servers, respectively. The number of the proxy keys is equal to the number of the proxy servers. The method further includes sending encrypted ciphertexts and the proxy keys that correspond to the at least two proxy servers respectively to the at least two proxy servers, respectively, so that the at least two proxy servers re-encrypt the encrypted ciphertexts according to the corresponding proxy keys.