发明授权
US5878136A Encryption key control system for mail processing system having data
center verification
失效
具有数据中心验证功能的邮件处理系统加密密钥控制系统
- 专利标题: Encryption key control system for mail processing system having data center verification
- 专利标题(中): 具有数据中心验证功能的邮件处理系统加密密钥控制系统
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申请号: US133416申请日: 1993-10-08
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公开(公告)号: US5878136A公开(公告)日: 1999-03-02
- 发明人: Hyung-Kun Paul Kim , Robert A. Cordery , Leon A. Pintsov
- 申请人: Hyung-Kun Paul Kim , Robert A. Cordery , Leon A. Pintsov
- 申请人地址: CT Stamford
- 专利权人: Pitney Bowes Inc.
- 当前专利权人: Pitney Bowes Inc.
- 当前专利权人地址: CT Stamford
- 主分类号: G07B17/00
- IPC分类号: G07B17/00 ; H04L9/08 ; H04L9/00
摘要:
A key control system comprises the generation of a first set of keys which are then used for a plurality of respective postage meters. The keys are then related to a respective meter in accordance with a map or algorithm. The keys may be changed by entering the second key via an encryption using the first key.
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