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1. (WO2005112336) PON SYSTEM HAVING ENCRYPTION FUNCTION AND ENCRYPTION METHOD OF THE PON SYSTEM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2005/112336    International Application No.:    PCT/JP2004/006897
Publication Date: 24.11.2005 International Filing Date: 14.05.2004
IPC:
H04L 9/14 (2006.01), H04L 12/44 (2006.01)
Applicants: MITSUBISHI DENKI KABUSHIKI KAISHA [JP/JP]; 7-3, Marunouchi 2-chome Chiyoda-ku, Tokyo 100-8310 (JP) (For All Designated States Except US).
KOZAKI, Seiji [JP/JP]; (JP) (For US Only).
MURAKAMI, Ken [JP/JP]; (JP) (For US Only).
TANAKA, Hiroyuki [JP/JP]; (JP) (For US Only).
HOTTA, Yoshifumi [JP/JP]; (JP) (For US Only).
YAMANAKA, Hideaki [JP/JP]; (JP) (For US Only)
Inventors: KOZAKI, Seiji; (JP).
MURAKAMI, Ken; (JP).
TANAKA, Hiroyuki; (JP).
HOTTA, Yoshifumi; (JP).
YAMANAKA, Hideaki; (JP)
Agent: SAKAI, Hiroaki; Sakai International Patent Office Kasumigaseki Building 2-5, Kasumigaseki 3-chome Chiyoda-ku, Tokyo 100-6019 (JP)
Priority Data:
Title (EN) PON SYSTEM HAVING ENCRYPTION FUNCTION AND ENCRYPTION METHOD OF THE PON SYSTEM
(FR) SYSTÈME PON AYANT UNE FONCTION DE CODAGE ET MÉTHODE DE CODAGE DU SYSTÈME PON
(JA) 暗号機能付きPONシステム及びPONシステムの暗号化方法
Abstract: front page image
(EN)In a PON system transmitting a variable length packet, the time is synchronized in advance between a subscriber side device (13) and a station side device (15). A new encryption key generated by one of them is transmitted to the other and each of them stores the new encryption key. One of them transmits an encryption key switching time and each of them switches the encryption to the new encryption key at the encryption key switching time. Accordingly, even in a PON system transmitting a variable length packet, it is possible to synchronize the encryption key switching timing between the subscriber side device (13) and the station side device(15).
(FR)Dans un système PON transmettant un paquet de longueur variable, le temps est synchronisé d’avance entre un dispositif côté souscripteur (13) et un dispositif côté station (15). Une nouvelle clé de codage générée par l’un d’eux est transmise à l’autre et chacun d’eux stocke la nouvelle clé de codage. L’un d’eux transmet un temps de changement de clé de codage et chacun d’eux passe de la clé de codage à la nouvelle clé de codage au temps de changement de clé de codage. En accord, même dans un système PON transmettant un paquet de longueur variable, il est possible de synchroniser les temps de changement de clé de codage entre le dispositif côté souscripteur (13) et le dispositif côté station (15).
(JA)可変長パケットを伝送するPONシステムにおいて、加入者側装置(13)と局側装置(15)との間で予め時刻を同期させておき、いずれか一方が生成した新暗号鍵を他方に伝達し、それぞれがこの新暗号鍵を記憶し、いずれか一方が他方に暗号鍵切替時刻を伝達し、それぞれがこの暗号鍵切替時刻に暗号を新暗号鍵に切り替える。そのため、可変長パケットを伝送するPONシステムであっても、加入者側装置(13)と局側装置(15)との間で暗号鍵の切り替えるタイミングを同期させることができる。
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (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, HU, IE, IT, LU, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)