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The test data generation device, in the test data generation device which generates the test data which it conceals converts the storage null information data which stores the test data generation method
The test data generation device, in the test data generation device which generates the test data which it conceals converts the storage null information data which stores the test data generation method
PROBLEM TO BE SOLVED: To generate test data to protect secret information by hiding data in use at actual operations, and to restore necessary items to verify the test data after the test. SOLUTION: The hiding method setting means which sets up hiding method according to items of the information data, the hiding information storing means which stores hiding information in terms of the items which the hiding method setting means set up its hiding method, the test data generation means which generates the test data by hiding the information data, the hiding/restoring specification means which makes restoration of the hidden items of the test data selectively specifiable, the restored information storing means which stores restoring information in terms of which the hiding/restoring specification means is specified to restore, and the data restoring means which restores specified items of the test data from the information of the items which are retained in prior to the hiding are provided.
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