The private certification system, private certification method, and the program which executes private certification

摘要

The private certification system which prevents the presumption of the password element from indication of the element selective group which mixes with the password element and the scramble element by the third party effectively is offered. Plural you prepare the mixed element group which mixes with the password element and the plural scramble elements whose familiarity is deep in the user beforehand and remember. When certifying the element selective group which shuffles the element which forms the mixed element group order differently is indicated. The user selects the element whose familiarity is deep from each element selective group which is indicated. The element and the password element which are selected are compared, certification non- certification is judged.