Title:
秘匿検索システム及び暗号処理システム
Document Type and Number:
Japanese Patent JP5269210
Kind Code:
B2
Abstract:
The object is to realize confidential search that can flexibly control searchable data depending on a role or authority of a user when the data is shared in a group. When the inner product of an attribute vector and a predicate vector is a predetermined value, a confidential search system 100 conducts pairing computation of decrypted data generated based on the attribute vector and a decryption key generated based on the predicate vector, so as to realize confidential search by utilizing an inner-product predicate encryption process that can decrypt the encrypted data. In particular, the confidential search system 100 enables flexible control of searchable data depending on the role or authority of the user, by devising a method of generating the attribute vector and the predicate vector.
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Inventors:
Matsuda Nori
Hattori Mitsuhiro
Takashi Ito
Ken Yoneda
Hattori Mitsuhiro
Takashi Ito
Ken Yoneda
Application Number:
JP2011549822A
Publication Date:
August 21, 2013
Filing Date:
January 15, 2010
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H04L9/08; G06F17/30; G09C1/00
Domestic Patent References:
| JP2007052698A | 2007-03-01 | |||
| JP2002278970A | 2002-09-27 |
Other References:
JPN6010012284; Ｔ． Ｏｋａｍｏｔｏ ｅｔ ａｌ．: 'Ｈｉｅｒａｒｃｈｉｃａｌ Ｐｒｅｄｉｃａｔｅ Ｅｎｃｒｙｐｔｉｏｎ ｆｏｒ Ｉｎｎｅｒ-Ｐｒｏｄｕｃｔｓ' Ｌｅｃｔｕｒｅ Ｎｏｔｅｓ Ｉｎ Ｃｏｍｐｕｔｅｒ Ｓｃｉｅｎｃｅ ｖｏｌ． ５９１２, 20091201, ｐｐ．２１４-２３１, Ｓｐｒｉｎｇｅｒ
JPN6010012285; Ｔ． Ｏｋａｍｏｔｏ ｅｔ ａｌ．: 'Ｈｉｅｒａｒｃｈｉｃａｌ Ｐｒｅｄｉｃａｔｅ Ｅｎｃｒｙｐｔｉｏｎ ｗｉｔｈ Ｉｎｎｅｒ-Ｐｒｏｄｕｃｔｓｆｒｏｍ ａ Ｓｉｎｇｌｅ ＤＤＨ-ｌｉｋｅ Ａｓｓｕｍｐｔｉｏｎ' Ａｂｓｔｒａｃｔｓ ｏｆ ｔｈｅ ２０１０ Ｓｙｍｐｏｓｉｕｍ ｏｎ Ｃｒｙｐｔｏｇｒａｐｈｙ ａｎｄ Ｉｎｆｏｒｍａｔｉｏｎ Ｓｅｃｕｒｉｔｙ , 20100119, ２Ｃ３-３, Ｔｈｅ Ｉｎｓｔｉｔｕｔｅ ｏｆ Ｅｌｅｃｔｒｏｎｉｃｓ， Ｉｎｆｏｒｍａｔｉｏｎ ａｎｄ Ｃｏｍｍ
JPN6010012286; 松田規，他: '階層的内積述語暗号を用いたデータセンタシステムの検討' ２０１０年暗号と情報セキュリティシンポジウム概要集 , 20100119, ４Ｆ２-３, 電子情報通信学会
JPN6010012287; Ｙ． Ｚｈａｎｇ ｅｔ ａｌ．: 'Ａｎｏｎｙｍｏｕｓ Ｆｕｚｚｙ Ｉｄｅｎｔｉｔｙ-ｂａｓｅｄ Ｅｎｃｒｙｐｔｉｏｎ ｆｏｒ Ｓｉｍｉｌａｒｉｔｙ Ｓｅａｒｃｈ' Ｃｒｙｐｔｏｌｏｇｙ ｅＰｒｉｎｔ Ａｒｃｈｉｖｅ Ｒｅｐｏｒｔ ２００９／４９６, 20100112, Ｉｎｔｅｒｎａｔｉｏｎａｌ Ａｓｓｏｃｉａｔｉｏｎ ｆｏｒ Ｃｒｙｐｔｏｌｏｇｉｃ Ｒｅｓｅａｒｃｈ
JPN6010012288; Ｊ． Ｋａｔｚ ｅｔ ａｌ．: 'Ｐｒｅｄｉｃａｔｅ Ｅｎｃｒｙｐｔｉｏｎ Ｓｕｐｐｏｒｔｉｎｇ Ｄｉｓｊｕｎｃｔｉｏｎｓ， Ｐｏｌｙｎｏｍｉａｌ Ｅｑｕａｔｉｏｎｓ， ａｎｄ Ｉｎｎｅｒ Ｐｒｏｄｕｃｔｓ' Ｃｒｙｐｔｏｌｏｇｙ ｅＰｒｉｎｔ Ａｒｃｈｉｖｅ Ｒｅｐｏｒｔ ２００７／４０４, 20080708, Ｉｎｔｅｒｎａｔｉｏｎａｌ Ａｓｓｏｃｉａｔｉｏｎ ｆｏｒ Ｃｒｙｐｔｏｌｏｇｉｃ Ｒｅｓｅａｒｃｈ
JPN6010012285; Ｔ． Ｏｋａｍｏｔｏ ｅｔ ａｌ．: 'Ｈｉｅｒａｒｃｈｉｃａｌ Ｐｒｅｄｉｃａｔｅ Ｅｎｃｒｙｐｔｉｏｎ ｗｉｔｈ Ｉｎｎｅｒ-Ｐｒｏｄｕｃｔｓｆｒｏｍ ａ Ｓｉｎｇｌｅ ＤＤＨ-ｌｉｋｅ Ａｓｓｕｍｐｔｉｏｎ' Ａｂｓｔｒａｃｔｓ ｏｆ ｔｈｅ ２０１０ Ｓｙｍｐｏｓｉｕｍ ｏｎ Ｃｒｙｐｔｏｇｒａｐｈｙ ａｎｄ Ｉｎｆｏｒｍａｔｉｏｎ Ｓｅｃｕｒｉｔｙ , 20100119, ２Ｃ３-３, Ｔｈｅ Ｉｎｓｔｉｔｕｔｅ ｏｆ Ｅｌｅｃｔｒｏｎｉｃｓ， Ｉｎｆｏｒｍａｔｉｏｎ ａｎｄ Ｃｏｍｍ
JPN6010012286; 松田規，他: '階層的内積述語暗号を用いたデータセンタシステムの検討' ２０１０年暗号と情報セキュリティシンポジウム概要集 , 20100119, ４Ｆ２-３, 電子情報通信学会
JPN6010012287; Ｙ． Ｚｈａｎｇ ｅｔ ａｌ．: 'Ａｎｏｎｙｍｏｕｓ Ｆｕｚｚｙ Ｉｄｅｎｔｉｔｙ-ｂａｓｅｄ Ｅｎｃｒｙｐｔｉｏｎ ｆｏｒ Ｓｉｍｉｌａｒｉｔｙ Ｓｅａｒｃｈ' Ｃｒｙｐｔｏｌｏｇｙ ｅＰｒｉｎｔ Ａｒｃｈｉｖｅ Ｒｅｐｏｒｔ ２００９／４９６, 20100112, Ｉｎｔｅｒｎａｔｉｏｎａｌ Ａｓｓｏｃｉａｔｉｏｎ ｆｏｒ Ｃｒｙｐｔｏｌｏｇｉｃ Ｒｅｓｅａｒｃｈ
JPN6010012288; Ｊ． Ｋａｔｚ ｅｔ ａｌ．: 'Ｐｒｅｄｉｃａｔｅ Ｅｎｃｒｙｐｔｉｏｎ Ｓｕｐｐｏｒｔｉｎｇ Ｄｉｓｊｕｎｃｔｉｏｎｓ， Ｐｏｌｙｎｏｍｉａｌ Ｅｑｕａｔｉｏｎｓ， ａｎｄ Ｉｎｎｅｒ Ｐｒｏｄｕｃｔｓ' Ｃｒｙｐｔｏｌｏｇｙ ｅＰｒｉｎｔ Ａｒｃｈｉｖｅ Ｒｅｐｏｒｔ ２００７／４０４, 20080708, Ｉｎｔｅｒｎａｔｉｏｎａｌ Ａｓｓｏｃｉａｔｉｏｎ ｆｏｒ Ｃｒｙｐｔｏｌｏｇｉｃ Ｒｅｓｅａｒｃｈ
Attorney, Agent or Firm:
Shoji Mizoi
Maki Takashi
Maki Takashi
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