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1. (WO2017033843) SEARCHABLE CRYPTOGRAPH PROCESSING SYSTEM
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2017/033843 International Application No.: PCT/JP2016/074170
Publication Date: 02.03.2017 International Filing Date: 19.08.2016
IPC:
H04L 9/14 (2006.01) ,G06F 17/30 (2006.01) ,G06F 21/60 (2013.01) ,G09C 1/00 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9
Arrangements for secret or secure communication
14
using a plurality of keys or algorithms
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
17
Digital computing or data processing equipment or methods, specially adapted for specific functions
30
Information retrieval; Database structures therefor
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
21
Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
60
Protecting data
G PHYSICS
09
EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
C
CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
1
Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system
Applicants:
株式会社日立製作所 HITACHI, LTD. [JP/JP]; 東京都千代田区丸の内一丁目6番6号 6-6, Marunouchi 1-chome, Chiyoda-ku, Tokyo 1008280, JP
Inventors:
吉野 雅之 YOSHINO Masayuki; JP
佐藤 尚宜 SATO Hisayoshi; JP
Agent:
青稜特許業務法人 SEIRYO I.P.C.; 東京都中央区八丁堀二丁目24番2号 24-2, Hatchobori 2-chome, Chuo-ku, Tokyo 1040032, JP
Priority Data:
2015-16561925.08.2015JP
Title (EN) SEARCHABLE CRYPTOGRAPH PROCESSING SYSTEM
(FR) SYSTÈME DE TRAITEMENT DE CRYPTOGRAMME RECHERCHABLE
(JA) 検索可能暗号処理システム
Abstract:
(EN) In this searchable cryptograph processing system in which a registered client and a management server are connected via a network, the registered client is provided with a registered client processing unit that generates, on the basis of the difference between a first secret key for encrypting plaintext data and a second secret key for newly encrypting the plaintext data, a difference key mask for updating, by using the second secret key, confidential data encrypted by the first secret key.
(FR) Dans ce système de traitement de cryptogramme recherchable, dans lequel un client enregistré et un serveur de gestion sont connectés par l'intermédiaire d'un réseau, le client enregistré est pourvu d'une unité de traitement de client enregistré qui génère, sur la base de la différence entre une première clé secrète servant à chiffrer des données de texte en clair et une seconde clé secrète servant à chiffrer à nouveau les données de texte en clair, un masque de différence de clés pour mettre à jour, au moyen de la seconde clé secrète, des données confidentielles chiffrées par la première clé secrète.
(JA) 登録クライアントと管理サーバとがネットワークを介して接続された検索可能暗号処理システムにおいて、登録クライアントは、平文データを暗号化するための第一の秘密鍵と、新たに平文データを暗号化するための第二の秘密鍵との差分に基づいて、第一の秘密鍵により暗号化された秘匿データを第二の秘密鍵により更新するための差分鍵マスクを生成する登録クライアント処理部、を備える。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)