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1. (WO2010079878) DATA ENCRYPTION AND DECRYPTION APPARATUS USING VARIABLE CODE TABLE AND METHOD THEREOF
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/079878 International Application No.: PCT/KR2009/005168
Publication Date: 15.07.2010 International Filing Date: 11.09.2009
IPC:
H03M 7/30 (2006.01)
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
M
CODING, DECODING OR CODE CONVERSION, IN GENERAL
7
Conversion of a code where information is represented by a given sequence or number of digits to a code where the same information is represented by a different sequence or number of digits
30
Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
Applicants:
이순구 LEE, Soon Goo [KR/KR]; KR
Inventors:
이순구 LEE, Soon Goo; KR
Agent:
허남정 HEO, Nam Jung; 서울특별시 서초구 서초4동 1698-2번지 형남빌딩 6층 6F Hyongnam Bldg., 1698-2 Seocho4-dong, Seocho-gu Seoul 137-883, KR
Priority Data:
10-2009-000189009.01.2009KR
Title (EN) DATA ENCRYPTION AND DECRYPTION APPARATUS USING VARIABLE CODE TABLE AND METHOD THEREOF
(FR) APPAREIL DE CRYPTAGE ET DÉCRYPTAGE DE DONNÉES UTILISANT UNE TABLE DE CODE VARIABLE ET PROCÉDÉ CORRESPONDANT
(KO) 가변코드 테이블을 이용한 데이터 암복호화 장치 및 그 방법
Abstract:
(EN) The present invention relates to a data encryption / decryption apparatus using a variable code table and a method thereof, and more particularly to a data encryption / decryption apparatus using a variable code table which enables an encrypted data search with an index, and a method thereof. The method of the present invention comprises: receiving the input of source data containing numbers or characters and a substitution key indicating a number range through a terminal; receiving, at a server, a G-TABLE in which hexadecimal numbers corresponding to the numbers or characters of the source data are sequentially arranged from a first database; setting, at the server, a substitution table in which hexadecimal numbers are arranged at random within the range of the substitution key so that the numbers or characters can correspond to the G-TABLE and storing the substitution table in a second database; and storing, at the server, target information obtained by encrypting the source data based on the substitution table and a substitution key value which is one number of the substitution key range in a third database.
(FR) La présente invention porte sur un appareil de cryptage et de décryptage de données utilisant une table de code variable et sur un procédé correspondant, et en particulier sur un appareil de cryptage et de décryptage de données utilisant une table de code variable qui permet une recherche de données cryptées à l'aide d'un index, et sur un procédé correspondant. Le procédé de la présente invention comprend : la réception de l'entrée de données sources contenant des nombres ou caractères et d'une clef de substitution indiquant une plage de nombre par l'intermédiaire d'un terminal; la réception, au niveau d'un serveur, d'une G-TABLE dans laquelle des nombres hexadécimaux correspondant aux nombres ou caractères des données sources sont séquentiellement agencés, en provenance d'une première base de données; le réglage, au niveau du serveur, d'une table de substitution dans laquelle des nombres hexadécimaux sont agencés de façon aléatoire dans la plage de la clef de substitution de telle manière que les nombres ou caractères peuvent correspondre à la G-TABLE et le stockage de la table de substitution dans une deuxième base de données; et le stockage, au niveau du serveur, d'informations cibles obtenues par cryptage des données sources sur la base de la table de substitution et d'une valeur de clef de substitution qui est un nombre de la plage de clef de substitution dans une troisième base de données.
(KO) 본 발명은 가변코드 테이블을 이용한 데이타 암/복호화 장치 및 그 방법에 관한 것으로서, 보다 상세하게는 암호 데이터를 인덱스로 찾을 수 있도록 하는 가변코드 테이블을 이용한 데이타 암/복호화 장치 및 그 방법에 대한 것이다. 본 발명은 숫자 또는 문자로 이루어진 원시자료와 숫자 범위를 나타내는 S-KEY를 단말을 통해 입력받는 단계와, 서버가 제1데이터베이스에서 상기 원시자료의 숫자 또는 문자에 대응하는 16진수를 순서적으로 배열한 G-TABLE을 전달받는 단계와, 상기 서버가 상기 숫자 또는 문자를 상기 G-TABLE에 대응하도록 상기 S-KEY의 범위 내에서 16진수를 랜덤하게 배열한 S-TABLE을 설정하고 제2데이터베이스에 저장하는 단계와, 상기 서버가 상기 원시자료를 상기 S-TABLE과 상기 S-KEY 범위 중 하나의 숫자인 S-KEY값에 의거하여 암호화한 최종정보를 제3데이터베이스에 저장하는 단계를 포함하여 구성되는 것을 특징으로 한다.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, 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, IS, JP, KE, KG, KM, KN, KP, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, 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, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (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, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: Korean (KO)
Filing Language: Korean (KO)