发明名称 |
Efficient and secure data currentness systems |
摘要 |
Indicating data currentness includes, on any date of a sequence of dates, issuing a proof indicating the currentness status of the data during a particular time interval. The proof may be a digital signature. The time interval may be in the form of a current date and an amount of time. The proof may include a digital signature of the time interval. The proof may include a digital signature of the time interval and the data. The proof may include a digital signature of the time interval and a compact form of the data, such as a hash. Indicating data currentness may also include distributing the proofs to a plurality of unsecure units that respond to requests by users for the proofs. Indicating data currentness may also include gathering a plurality of separate pieces of data and providing a single proof for the separate pieces of data. The data may be electronic documents.
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申请公布号 |
US2004237031(A1) |
申请公布日期 |
2004.11.25 |
申请号 |
US20040845579 |
申请日期 |
2004.05.13 |
申请人 |
MICALI SILVIO;LIBIN PHIL;VOLBRIGHT BRANDON |
发明人 |
MICALI SILVIO;LIBIN PHIL;VOLBRIGHT BRANDON |
分类号 |
H04L9/32;(IPC1-7):G06F17/21;H04L9/00 |
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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