Electronic bidding/bid opening program, electronic bidding/bid opening system, and electronic bidding/bid opening method

An electronic bidding/bid opening system that executes bidding and bid opening processing based on bidding information created in electronic data, comprising:

• a first edition information acquisition section that acquires the bidding information and partial identification information showing each section of the bidding information that can be identified by other sections, and registers the bidding information and the partial identification information as first edition bidding information and first edition partial identification information, respectively;
• a second edition information acquisition section that acquires and registers second (a) edition bidding information obtained by coding a bidding amount section in the first edition bidding information acquired by the first edition information acquisition section and second (a) edition partial identification information showing each section of the second (a) bidding information in a manner identifiable from other sections, and second (b) edition bidding information obtained by coding a bidder section in the first edition bidding information and second (b) edition partial identification information showing each section of the second (b) edition bidding information in a manner identifiable from other sections;
• a third edition information acquisition section that acquires and registers third edition bidding information obtained by applying an electronic signature by a person in charge of accepting a bid with respect to the second (a) edition bidding information acquired by the second edition information acquisition section, and partial identification information showing each section of the third edition bidding information in a manner identifiable from other sections;
• a fourth edition information acquisition section that acquires and registers fourth edition bidding information obtained by coding a bidder section in the third edition bidding information acquired by the third edition information acquisition section and fourth edition partial identification information that shows each section of the fourth edition bidding information in a manner identifiable from other sections;
• and
• a verification section that verifies predetermined validity with respect to successful bid processing by a predetermined combination of information of any of a plurality of pieces of edition information acquired by the first to fourth edition information acquisition section.

An electronic bidding/bid opening method that allows a computer to execute bidding and bid opening processing based on bidding information created in electronic data, comprising:

• a first edition information acquiring step that acquires the bidding information and partial identification information showing each section of the bidding information that can be identified by other sections, and registers the bidding information and the partial identification information as first edition bidding information and first edition partial identification information, respectively;
• a second edition information acquiring step that acquires and registers second (a) edition bidding information obtained by coding a bidding amount section in the first edition bidding information acquired by the first edition information acquiring step and second (a) edition partial identification information showing each section of the second (a) bidding information in a manner identifiable from other sections, and second (b) edition bidding information obtained by coding a bidder section in the first edition bidding information and second (b) edition partial identification information showing each section of the second (b) edition bidding information in a manner identifiable from other sections;
• a third edition information acquiring step that acquires and registers third edition bidding information obtained by applying an electronic signature by a person in charge of accepting a bid with respect to the second (a) edition bidding information acquired by the second edition information acquiring step, and partial identification information showing each section of the third edition bidding information in a manner identifiable from other sections;
• a fourth edition information acquiring step that acquires and registers fourth edition bidding information obtained by coding a bidder section in the third edition bidding information acquired by the third edition information acquiring step and fourth edition partial identification information that shows each section of the fourth edition bidding information in a manner identifiable from other sections;
• and
• a verification step that verifies predetermined validity with respect to successful bid processing by a predetermined combination of information of any of a plurality of pieces of edition information acquired by the first to fourth edition information acquiring steps.