Title:
METHOD AND SYSTEM FOR CONTROLLING THE DISCLOSURE TIME OF INFORMATION
Document Type and Number:
WIPO Patent Application WO2004114197
Kind Code:
A8
Abstract:
A method and system for controlling the disclosure time of information by a publisher (10) to one or more recipients (31) is provided. The system includes a trusted body (30) which generates an asyrrunetrical key pair for a specified date and time of disclosure with an encryption key (32) and a decryption key (34). The trusted body (30) provides a digital certificate (20) signed with a private key (26) of the trusted body (30) providing the publisher (10) with the encryption key (32) prior to the specified date and time. The publisher (10) uses the encryption key (32) to encrypt data (15) and a recipient (31) obtains the encrypted data (15) at any time prior to the specified date and time. The trusted body (30) then makes the decryption key (34) available to the recipient (31 ) at or after the specified date and time.
Inventors:
NOBLE GARY PAUL (GB)
Application Number:
PCT/EP2004/050847
Publication Date:
March 24, 2005
Filing Date:
May 25, 2004
Export Citation:
Assignee:
IBM (US)
NOBLE GARY PAUL (GB)
NOBLE GARY PAUL (GB)
International Classes:
G06F21/62; G06F21/72; H04L29/06; (IPC1-7): G06F1/00; H04L9/08
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