发明名称 |
Document verification with distributed calendar infrastructure |
摘要 |
Transformations of digital records are used as lowest level inputs to a tree data structure having a root in a core system and having nodes computed as digital combinations of child node values. A combination of root values is published in a permanent medium. Signature vectors are associated with the digital records and have parameters that enable recomputation upward through the tree data structure to either a current root value or to the published value. Recomputation yields the same value only if a candidate digital record is an exact version of the original digital record included in the original computation of the value. |
申请公布号 |
US8719576(B2) |
申请公布日期 |
2014.05.06 |
申请号 |
US201213625551 |
申请日期 |
2012.09.24 |
申请人 |
GUARDTIME IP HOLDINGS LIMITED;GUARDTIME IP HOLDINGS, LTD |
发明人 |
BULDAS AHTO;SAAREPERA MÄRT |
分类号 |
H04L29/06;G06F21/64;H04L9/32 |
主分类号 |
H04L29/06 |
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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