发明申请
- 专利标题: Time Stamping Method Employing a Separate Ticket and Stub
- 专利标题(中): 使用单独机票和存根的时间戳方法
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申请号: US11846562申请日: 2007-08-29
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公开(公告)号: US20070294537A1公开(公告)日: 2007-12-20
- 发明人: Mohammad Peyravian , Allen Roginsky , Nevenko Zunic , Stephen Matyas
- 申请人: Mohammad Peyravian , Allen Roginsky , Nevenko Zunic , Stephen Matyas
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 主分类号: H04L9/00
- IPC分类号: H04L9/00
摘要:
A time stamping protocol has two stages referred to as the ticketing stage and the certification stage. During the ticketing stage, the document or other identifying data is sent to the TSA. The TSA generates a “ticket” based on the document or other identifying data and a time indication derived from a trusted clock. The ticket, which serves as an unsigned time stamp receipt, is transmitted back to the document originator. During the certification stage, the holder of the ticket requests a certified time stamp receipt by presenting the ticket to the TSA. The TSA verifies the ticket and generates a signed time stamp receipt, called the ticket stub, which is then transmitted back to the document originator. The ticket stub serves as a “universal time-stamp” that the holder of the ticket stub can use to prove the date of the document
公开/授权文献
- US07487359B2 Time stamping method employing a separate ticket and stub 公开/授权日:2009-02-03