PROBLEM TO BE SOLVED: To provide a management method and device for civil engineering works capable of preventing construction data in a civil engineering work such as a grouting work or management data from being falsified and promoting a paperless trend of management data and technical data.;SOLUTION: The management method and device include constructor's processing (AS 10) carried out by a constructor, contructor's processing (G 30) carried out by a contractor, owner's processing (Oh 50) carried out by an owner. Data are prevented from being falsified by using open keys (Sa,Oa, Ga) and confidential keys (Sb, Ob, Gb). Further, pretense of the malicious third party can be prevented.;COPYRIGHT: (C)2001,JPO
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