发明名称 |
VERIFICATION OF IDENTITY BASED SIGNATURES |
摘要 |
<p>A database management system (1) comprises up to fifty or more workstations (2), each for a user. The environment may, for example, be a hospital and the system manages medical records in a secure manner. Each user has a private key issued by a KGC (5). A database controller (3) updates a secure database (3) with data and associated signatures generated by the user workstations (2). Thus every record of the secure database (3) has a signature to provide full traceability and non-repudiation of data edits/updates. It is important for the system (1) that the signatures are verified on a regular basis, say every hour. Such a task would be extremely processor-intensive if the database (3) is large. However this is performed by a verification processor (4) of the system (1) in a much shorter time than heretofore, t1 + n(Delta), where t1 is the time for one verification, n is the number of signatures, and Delta is a time value which is a very small proportion of t1 (less than 1%).</p> |
申请公布号 |
WO2005096545(A1) |
申请公布日期 |
2005.10.13 |
申请号 |
WO2005IE00034 |
申请日期 |
2005.03.30 |
申请人 |
DUBLIN CITY UNIVERSITY;MCCULLAGH, NOEL;SCOTT, MICHAEL;COSTIGAN, NEIL |
发明人 |
MCCULLAGH, NOEL;SCOTT, MICHAEL;COSTIGAN, NEIL |
分类号 |
H04L9/32;(IPC1-7):H04L9/32 |
主分类号 |
H04L9/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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