Title:
METHOD AND SYSTEM FOR ENCODING AND DECODING THE DIGITAL MESSAGES
Document Type and Number:
WIPO Patent Application WO/2008/148276
Kind Code:
A1
Abstract:
The present invention provides a method and system for encoding and decoding
the digital messages. The method includes: Selecting the positive integer m,
n', r, and m≥n'; Generating a public key that comprises E'
(x, ID), and E' (x, ID) is a nonlinear function group from (x1,…,xm,ID1,
…,IDr) to (y1, …,yr) in domain
F, and ID=( ID1, …,IDr) is an identification of the
authorized user; According to the authorized user whose identification is ID(K),
generating a private key corresponding to this identification; then finishing
the process of encrypt anddecrypt, or the process of validating digital signatures.
The present invention can make the users of whole network own one public key, and
solves the problem of managing the grand-scale complex network key; and does
not need set up large-scale authentication center and private key database,
reduces the cost of setting up, running and managing system; implements the incorporate
management of the public key database and user ID, affords facilities for trust
management in network environment.
Inventors:
GUAN HAIMING (CN)
Application Number:
PCT/CN2007/070266
Publication Date:
December 11, 2008
Filing Date:
July 11, 2007
Export Citation:
Assignee:
GUAN HAIYING (CN)
GUAN HAIMING (CN)
GUAN HAIMING (CN)
International Classes:
H04L9/32
Domestic Patent References:
| WO2006046187A1 | 2006-05-04 | |||
| WO2001091367A1 | 2001-11-29 |
Foreign References:
| CN1832403A | 2006-09-13 | |||
| CN1427351A | 2003-07-02 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (Scitech PlaceNo.22, Jian Guo Men Wai Ave., Chao Yang District, Beijing 4, CN)
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