Title:
トランジエント鍵ディジタルスタンプ方法およびシステム
Document Type and Number:
Japanese Patent JP4563577
Kind Code:
B2
Abstract:
Irrefutable public key digital signature time-stamps (1040) are created and used based upon, for example, the concept of transient time-interval-related secret cryptographic keys (2010), which are used to digitally sign (2030) submitted data during specific time intervals, and then permanently destroyed (2040). The public-key correlate for each time interval is saved for future authentication of the content of time-stamped data and time of creation of time-stamped data. The validity of the public keys is ensured through the certification of each time interval's public key using the previous time interval's secret key, immediately before that secret key is destroyed.
Inventors:
Doyle, Mikrudy.
Application Number:
JP2000513384A
Publication Date:
October 13, 2010
Filing Date:
September 22, 1998
Export Citation:
Assignee:
Proof Space Incorporated
International Classes:
G09C1/00; H04L9/32; H04L29/06
Domestic Patent References:
| JP7254897A | ||||
| JP6501571A | ||||
| JP11296076A |
Foreign References:
| WO1995023468A1 |
Attorney, Agent or Firm:
Hidekazu Miyoshi