LOCK BOX MECHANISM ELECTRONIC BIDDING METHOD, AND SECURITY PROVIDING METHOD

Japanese Patent JP3251917

B2

PROBLEM TO BE SOLVED: To obtain open bidding which is protected in a field of electronic procurement by providing an electronic repository for storing a submitted bid plan until open bidding expires.
SOLUTION: After the date and the digital signature of a seller 100 which are included in a proposal message are verified, a bidder 102 generates another session key called a bidder's session key and encodes the proposal once more. The session key of the bidder is not shared with any other person and stored behind the scene by the bidder 102 himself or herself. The bidder 102 adds the date and digital signature to a message including the proporsal which is encoded double and transfers them to a 3rd person 104 who verifies the date and the digital signature of the bidder 102. After the signature of the bidder 102 and date information are verified, the 3rd person 104 stores the praporsal in a safe repository or cache 106 until the bidding closing day and time.

Weydon Ko

JP11981899A

January 28, 2002

April 27, 1999

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INTERNATIONAL BUSINESS MASCHINES CORPORATION

H04L9/08; G06F21/00; G06F21/33; G06Q10/00; G06Q20/08; G06Q20/38; G06Q30/00; G06Q30/08; G06Q40/00; G06Q40/04; G06Q50/00; G09C1/00; H04L9/32; H04L12/18; H04L29/06; (IPC1-7): G06F17/60; G06F15/00; G09C1/00; H04L9/08; H04L9/32

JP2118876A

ＫＵＤＯ，Ｍ．，Ｓｅｃｕｒｅ Ｅｌｅｃｔｒｏｎｉｃ Ｓｅａｌｅｄ−Ｂｉｄ Ａｕｃｔｉｏｎ Ｐｒｏｔｏｃｏｌ ｗｉｔｈ Ｐｕｂｌｉｃ Ｋｅｙ Ｃｒｙｐｔｏｇｒａｐｈｙ，ＩＥＩＣＥ ＴＲＡＮＳ．ＦＵＮＤＡＭＥＮＴＡＬＳ，Ｊａｎｕａｒｙ １９９８，ＶＯＬ．Ｅ８１−Ａ，ＮＯ．１，ｐ．２０−２７
工藤道治，Ｂｏｎｅｈ−Ｆｒａｎｋｌｉｎ分散ＲＳＡ鍵生成法に基づいた時間鍵暗号の構成法，電子情報通信学会技術研究報告，電子情報通信学会，１９９８年７月，第９８巻，第２２７号，ｐ．６１−６８（ＩＳＥＣ９８−１７）

Hiroshi Sakaguchi (1 person outside)

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