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1. WO2013054078 - METHOD AND SYSTEM FOR ENCRYPTION/DECRYPTION OF DATA

Publication Number WO/2013/054078
Publication Date 18.04.2013
International Application No. PCT/GB2012/000781
International Filing Date 10.10.2012
IPC
G09C 1/00 2006.1
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
CCIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
1Apparatus 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
H04L 9/08 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Arrangements for secret or secure communication
08Key distribution
CPC
G09C 1/00
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
CCIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
1Apparatus 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
H04L 63/06
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
63Network architectures or network communication protocols for network security
06for supporting key management in a packet data network
H04L 9/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Cryptographic mechanisms or cryptographic; arrangements for secret or secure communication
H04L 9/08
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Cryptographic mechanisms or cryptographic; arrangements for secret or secure communication
08Key distribution ; or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
Applicants
  • WARD, Anthony [GB]/[GB]
Inventors
  • WARD, Anthony
Agents
  • BODEN, Keith McMurray
Priority Data
1117411.710.10.2011GB
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND SYSTEM FOR ENCRYPTION/DECRYPTION OF DATA
(FR) PROCÉDÉ ET SYSTÈME DE CHIFFREMENT/DÉCHIFFREMENT DE DONNÉES
Abstract
(EN) A method and system for encryption/decryption of data, wherein a user is provided with a digital data string (100, 200) for constructing an encryption/decryption codebook according to a frequency distribution of byte values in the digital data string (100, 200). The codebook is used to encrypt and/or decrypt data.
(FR) L'invention concerne un procédé et un système de chiffrement/déchiffrement de données, dans lesquels un utilisateur se voit fournir une chaîne de données numériques (100, 200) pour construire un livre de codes de chiffrement/déchiffrement selon une distribution de fréquence de valeurs d'octet dans la chaîne de données numériques (100, 200). Le livre de codes est utilisé pour chiffrer et/ou déchiffrer des données.
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