EP2787680 - Cryptographic system, cryptographic communication method, encryption apparatus, key generation apparatus, decryption apparatus, content server, program, and storage medium [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 02.02.2018 Database last updated on 09.09.2024 | |
Former | The patent has been granted Status updated on 24.02.2017 | ||
Former | Grant of patent is intended Status updated on 21.02.2017 | Most recent event Tooltip | 17.07.2020 | Lapse of the patent in a contracting state New state(s): AL | published on 19.08.2020 [2020/34] | Applicant(s) | For all designated states NIPPON TELEGRAPH AND TELEPHONE CORPORATION 3-1, Otemachi 2-chome, Chiyoda-ku Tokyo 100-8116 / JP | [2014/41] | Inventor(s) | 01 /
Kobayashi, Tetsutaro c/o NTT Intellectual Property Center 9-11, Midori-cho 3-chome Musashino-shi, Tokyo 180-8585 / JP | 02 /
Takeuchi, Kaku c/o NTT Intellectual Property Center 9-11, Midori-cho 3-chome Musashino-shi, Tokyo 180-8585 / JP | 03 /
Chikara, Sakae c/o NTT Intellectual Property Center 9-11, Midori-cho 3-chome Musashino-shi, Tokyo 180-8585 / JP | [2014/41] | Representative(s) | MERH-IP Matias Erny Reichl Hoffmann Patentanwälte PartG mbB Paul-Heyse-Strasse 29 80336 München / DE | [2017/13] |
Former [2014/41] | MERH-IP Matias Erny Reichl Hoffmann Paul-Heyse-Strasse 29 80336 München / DE | Application number, filing date | 14164754.5 | 22.07.2011 | [2014/41] | Priority number, date | JP20100166401 | 23.07.2010 Original published format: JP 2010166401 | [2014/41] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP2787680 | Date: | 08.10.2014 | Language: | EN | [2014/41] | Type: | B1 Patent specification | No.: | EP2787680 | Date: | 29.03.2017 | Language: | EN | [2017/13] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 10.09.2014 | Classification | IPC: | H04L9/08, H04L9/30, H04L9/14 | [2014/41] | CPC: |
H04L9/14 (EP,US);
H04L9/30 (KR);
H04L9/08 (KR);
H04L9/0836 (EP,US);
H04L9/0847 (EP,US);
H04L9/085 (EP,US);
| Designated contracting states | AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR [2014/41] | Title | German: | Kryptografisches System, kryptografisches Kommunikationsverfahren, Verschlüsselungsvorrichtung, Schlüsselerzeugungsvorrichtung, Entschlüsselungsvorrichtung, Inhaltsserver, Programm und Speichermedium | [2014/41] | English: | Cryptographic system, cryptographic communication method, encryption apparatus, key generation apparatus, decryption apparatus, content server, program, and storage medium | [2014/41] | French: | Système cryptographique, procédé de communication cryptographique, appareil de codage, appareil de génération de clé, appareil de déchiffrement, serveur de contenu, programme et support de stockage | [2014/41] | Examination procedure | 17.04.2014 | Examination requested [2014/41] | 16.03.2015 | Amendment by applicant (claims and/or description) | 19.08.2015 | Despatch of a communication from the examining division (Time limit: M04) | 16.12.2015 | Reply to a communication from the examining division | 24.02.2016 | Despatch of a communication from the examining division (Time limit: M04) | 29.06.2016 | Reply to a communication from the examining division | 17.10.2016 | Communication of intention to grant the patent | 17.02.2017 | Fee for grant paid | 17.02.2017 | Fee for publishing/printing paid | 17.02.2017 | Receipt of the translation of the claim(s) | Parent application(s) Tooltip | EP11809745.0 / EP2582086 | Opposition(s) | 03.01.2018 | No opposition filed within time limit [2018/10] | Fees paid | Renewal fee | 17.04.2014 | Renewal fee patent year 03 | 18.08.2014 | Renewal fee patent year 04 | 31.07.2015 | Renewal fee patent year 05 | 01.08.2016 | Renewal fee patent year 06 |
Opt-out from the exclusive Tooltip competence of the Unified Patent Court | See the Register of the Unified Patent Court for opt-out data | ||
Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court. | Lapses during opposition Tooltip | HU | 22.07.2011 | AL | 29.03.2017 | AT | 29.03.2017 | CY | 29.03.2017 | CZ | 29.03.2017 | DK | 29.03.2017 | EE | 29.03.2017 | ES | 29.03.2017 | FI | 29.03.2017 | HR | 29.03.2017 | IT | 29.03.2017 | LT | 29.03.2017 | LV | 29.03.2017 | MC | 29.03.2017 | MK | 29.03.2017 | NL | 29.03.2017 | PL | 29.03.2017 | RO | 29.03.2017 | RS | 29.03.2017 | SE | 29.03.2017 | SI | 29.03.2017 | SK | 29.03.2017 | SM | 29.03.2017 | TR | 29.03.2017 | BG | 29.06.2017 | NO | 29.06.2017 | GR | 30.06.2017 | IE | 22.07.2017 | LU | 22.07.2017 | MT | 22.07.2017 | IS | 29.07.2017 | BE | 31.07.2017 | CH | 31.07.2017 | LI | 31.07.2017 | PT | 31.07.2017 | [2020/34] |
Former [2020/15] | HU | 22.07.2011 | |
AT | 29.03.2017 | ||
CY | 29.03.2017 | ||
CZ | 29.03.2017 | ||
DK | 29.03.2017 | ||
EE | 29.03.2017 | ||
ES | 29.03.2017 | ||
FI | 29.03.2017 | ||
HR | 29.03.2017 | ||
IT | 29.03.2017 | ||
LT | 29.03.2017 | ||
LV | 29.03.2017 | ||
MC | 29.03.2017 | ||
MK | 29.03.2017 | ||
NL | 29.03.2017 | ||
PL | 29.03.2017 | ||
RO | 29.03.2017 | ||
RS | 29.03.2017 | ||
SE | 29.03.2017 | ||
SI | 29.03.2017 | ||
SK | 29.03.2017 | ||
SM | 29.03.2017 | ||
TR | 29.03.2017 | ||
BG | 29.06.2017 | ||
NO | 29.06.2017 | ||
GR | 30.06.2017 | ||
IE | 22.07.2017 | ||
LU | 22.07.2017 | ||
MT | 22.07.2017 | ||
IS | 29.07.2017 | ||
BE | 31.07.2017 | ||
CH | 31.07.2017 | ||
LI | 31.07.2017 | ||
PT | 31.07.2017 | ||
Former [2019/52] | HU | 22.07.2011 | |
AT | 29.03.2017 | ||
CY | 29.03.2017 | ||
CZ | 29.03.2017 | ||
DK | 29.03.2017 | ||
EE | 29.03.2017 | ||
ES | 29.03.2017 | ||
FI | 29.03.2017 | ||
HR | 29.03.2017 | ||
IT | 29.03.2017 | ||
LT | 29.03.2017 | ||
LV | 29.03.2017 | ||
MC | 29.03.2017 | ||
MK | 29.03.2017 | ||
NL | 29.03.2017 | ||
PL | 29.03.2017 | ||
RO | 29.03.2017 | ||
RS | 29.03.2017 | ||
SE | 29.03.2017 | ||
SI | 29.03.2017 | ||
SK | 29.03.2017 | ||
SM | 29.03.2017 | ||
BG | 29.06.2017 | ||
NO | 29.06.2017 | ||
GR | 30.06.2017 | ||
IE | 22.07.2017 | ||
LU | 22.07.2017 | ||
MT | 22.07.2017 | ||
IS | 29.07.2017 | ||
BE | 31.07.2017 | ||
CH | 31.07.2017 | ||
LI | 31.07.2017 | ||
PT | 31.07.2017 | ||
Former [2019/47] | HU | 22.07.2011 | |
AT | 29.03.2017 | ||
CY | 29.03.2017 | ||
CZ | 29.03.2017 | ||
DK | 29.03.2017 | ||
EE | 29.03.2017 | ||
ES | 29.03.2017 | ||
FI | 29.03.2017 | ||
HR | 29.03.2017 | ||
IT | 29.03.2017 | ||
LT | 29.03.2017 | ||
LV | 29.03.2017 | ||
MC | 29.03.2017 | ||
NL | 29.03.2017 | ||
PL | 29.03.2017 | ||
RO | 29.03.2017 | ||
RS | 29.03.2017 | ||
SE | 29.03.2017 | ||
SI | 29.03.2017 | ||
SK | 29.03.2017 | ||
SM | 29.03.2017 | ||
BG | 29.06.2017 | ||
NO | 29.06.2017 | ||
GR | 30.06.2017 | ||
IE | 22.07.2017 | ||
LU | 22.07.2017 | ||
MT | 22.07.2017 | ||
IS | 29.07.2017 | ||
BE | 31.07.2017 | ||
CH | 31.07.2017 | ||
LI | 31.07.2017 | ||
PT | 31.07.2017 | ||
Former [2019/31] | HU | 22.07.2011 | |
AT | 29.03.2017 | ||
CZ | 29.03.2017 | ||
DK | 29.03.2017 | ||
EE | 29.03.2017 | ||
ES | 29.03.2017 | ||
FI | 29.03.2017 | ||
HR | 29.03.2017 | ||
IT | 29.03.2017 | ||
LT | 29.03.2017 | ||
LV | 29.03.2017 | ||
MC | 29.03.2017 | ||
NL | 29.03.2017 | ||
PL | 29.03.2017 | ||
RO | 29.03.2017 | ||
RS | 29.03.2017 | ||
SE | 29.03.2017 | ||
SI | 29.03.2017 | ||
SK | 29.03.2017 | ||
SM | 29.03.2017 | ||
BG | 29.06.2017 | ||
NO | 29.06.2017 | ||
GR | 30.06.2017 | ||
IE | 22.07.2017 | ||
LU | 22.07.2017 | ||
MT | 22.07.2017 | ||
IS | 29.07.2017 | ||
BE | 31.07.2017 | ||
CH | 31.07.2017 | ||
LI | 31.07.2017 | ||
PT | 31.07.2017 | ||
Former [2019/30] | AT | 29.03.2017 | |
CZ | 29.03.2017 | ||
DK | 29.03.2017 | ||
EE | 29.03.2017 | ||
ES | 29.03.2017 | ||
FI | 29.03.2017 | ||
HR | 29.03.2017 | ||
IT | 29.03.2017 | ||
LT | 29.03.2017 | ||
LV | 29.03.2017 | ||
MC | 29.03.2017 | ||
NL | 29.03.2017 | ||
PL | 29.03.2017 | ||
RO | 29.03.2017 | ||
RS | 29.03.2017 | ||
SE | 29.03.2017 | ||
SI | 29.03.2017 | ||
SK | 29.03.2017 | ||
SM | 29.03.2017 | ||
BG | 29.06.2017 | ||
NO | 29.06.2017 | ||
GR | 30.06.2017 | ||
IE | 22.07.2017 | ||
LU | 22.07.2017 | ||
MT | 22.07.2017 | ||
IS | 29.07.2017 | ||
BE | 31.07.2017 | ||
CH | 31.07.2017 | ||
LI | 31.07.2017 | ||
PT | 31.07.2017 | ||
Former [2018/43] | AT | 29.03.2017 | |
CZ | 29.03.2017 | ||
DK | 29.03.2017 | ||
EE | 29.03.2017 | ||
ES | 29.03.2017 | ||
FI | 29.03.2017 | ||
HR | 29.03.2017 | ||
IT | 29.03.2017 | ||
LT | 29.03.2017 | ||
LV | 29.03.2017 | ||
NL | 29.03.2017 | ||
PL | 29.03.2017 | ||
RO | 29.03.2017 | ||
RS | 29.03.2017 | ||
SE | 29.03.2017 | ||
SI | 29.03.2017 | ||
SK | 29.03.2017 | ||
SM | 29.03.2017 | ||
BG | 29.06.2017 | ||
NO | 29.06.2017 | ||
GR | 30.06.2017 | ||
IE | 22.07.2017 | ||
LU | 22.07.2017 | ||
MT | 22.07.2017 | ||
IS | 29.07.2017 | ||
BE | 31.07.2017 | ||
CH | 31.07.2017 | ||
LI | 31.07.2017 | ||
PT | 31.07.2017 | ||
Former [2018/39] | AT | 29.03.2017 | |
CZ | 29.03.2017 | ||
DK | 29.03.2017 | ||
EE | 29.03.2017 | ||
ES | 29.03.2017 | ||
FI | 29.03.2017 | ||
HR | 29.03.2017 | ||
IT | 29.03.2017 | ||
LT | 29.03.2017 | ||
LV | 29.03.2017 | ||
NL | 29.03.2017 | ||
PL | 29.03.2017 | ||
RO | 29.03.2017 | ||
RS | 29.03.2017 | ||
SE | 29.03.2017 | ||
SI | 29.03.2017 | ||
SK | 29.03.2017 | ||
SM | 29.03.2017 | ||
BG | 29.06.2017 | ||
NO | 29.06.2017 | ||
GR | 30.06.2017 | ||
IE | 22.07.2017 | ||
LU | 22.07.2017 | ||
IS | 29.07.2017 | ||
BE | 31.07.2017 | ||
CH | 31.07.2017 | ||
LI | 31.07.2017 | ||
PT | 31.07.2017 | ||
Former [2018/34] | AT | 29.03.2017 | |
CZ | 29.03.2017 | ||
DK | 29.03.2017 | ||
EE | 29.03.2017 | ||
ES | 29.03.2017 | ||
FI | 29.03.2017 | ||
HR | 29.03.2017 | ||
IT | 29.03.2017 | ||
LT | 29.03.2017 | ||
LV | 29.03.2017 | ||
NL | 29.03.2017 | ||
PL | 29.03.2017 | ||
RO | 29.03.2017 | ||
RS | 29.03.2017 | ||
SE | 29.03.2017 | ||
SI | 29.03.2017 | ||
SK | 29.03.2017 | ||
SM | 29.03.2017 | ||
BG | 29.06.2017 | ||
NO | 29.06.2017 | ||
GR | 30.06.2017 | ||
IE | 22.07.2017 | ||
LU | 22.07.2017 | ||
IS | 29.07.2017 | ||
CH | 31.07.2017 | ||
LI | 31.07.2017 | ||
PT | 31.07.2017 | ||
Former [2018/23] | AT | 29.03.2017 | |
CZ | 29.03.2017 | ||
DK | 29.03.2017 | ||
EE | 29.03.2017 | ||
ES | 29.03.2017 | ||
FI | 29.03.2017 | ||
HR | 29.03.2017 | ||
IT | 29.03.2017 | ||
LT | 29.03.2017 | ||
LV | 29.03.2017 | ||
NL | 29.03.2017 | ||
PL | 29.03.2017 | ||
RO | 29.03.2017 | ||
RS | 29.03.2017 | ||
SE | 29.03.2017 | ||
SI | 29.03.2017 | ||
SK | 29.03.2017 | ||
SM | 29.03.2017 | ||
BG | 29.06.2017 | ||
NO | 29.06.2017 | ||
GR | 30.06.2017 | ||
IE | 22.07.2017 | ||
IS | 29.07.2017 | ||
CH | 31.07.2017 | ||
LI | 31.07.2017 | ||
PT | 31.07.2017 | ||
Former [2018/21] | AT | 29.03.2017 | |
CZ | 29.03.2017 | ||
DK | 29.03.2017 | ||
EE | 29.03.2017 | ||
ES | 29.03.2017 | ||
FI | 29.03.2017 | ||
HR | 29.03.2017 | ||
IT | 29.03.2017 | ||
LT | 29.03.2017 | ||
LV | 29.03.2017 | ||
NL | 29.03.2017 | ||
PL | 29.03.2017 | ||
RO | 29.03.2017 | ||
RS | 29.03.2017 | ||
SE | 29.03.2017 | ||
SK | 29.03.2017 | ||
SM | 29.03.2017 | ||
BG | 29.06.2017 | ||
NO | 29.06.2017 | ||
GR | 30.06.2017 | ||
IS | 29.07.2017 | ||
CH | 31.07.2017 | ||
LI | 31.07.2017 | ||
PT | 31.07.2017 | ||
Former [2018/09] | AT | 29.03.2017 | |
CZ | 29.03.2017 | ||
DK | 29.03.2017 | ||
EE | 29.03.2017 | ||
ES | 29.03.2017 | ||
FI | 29.03.2017 | ||
HR | 29.03.2017 | ||
IT | 29.03.2017 | ||
LT | 29.03.2017 | ||
LV | 29.03.2017 | ||
NL | 29.03.2017 | ||
PL | 29.03.2017 | ||
RO | 29.03.2017 | ||
RS | 29.03.2017 | ||
SE | 29.03.2017 | ||
SK | 29.03.2017 | ||
SM | 29.03.2017 | ||
BG | 29.06.2017 | ||
NO | 29.06.2017 | ||
GR | 30.06.2017 | ||
IS | 29.07.2017 | ||
PT | 31.07.2017 | ||
Former [2017/51] | AT | 29.03.2017 | |
CZ | 29.03.2017 | ||
EE | 29.03.2017 | ||
ES | 29.03.2017 | ||
FI | 29.03.2017 | ||
HR | 29.03.2017 | ||
IT | 29.03.2017 | ||
LT | 29.03.2017 | ||
LV | 29.03.2017 | ||
NL | 29.03.2017 | ||
PL | 29.03.2017 | ||
RO | 29.03.2017 | ||
RS | 29.03.2017 | ||
SE | 29.03.2017 | ||
SK | 29.03.2017 | ||
SM | 29.03.2017 | ||
BG | 29.06.2017 | ||
NO | 29.06.2017 | ||
GR | 30.06.2017 | ||
IS | 29.07.2017 | ||
PT | 31.07.2017 | ||
Former [2017/50] | AT | 29.03.2017 | |
CZ | 29.03.2017 | ||
EE | 29.03.2017 | ||
ES | 29.03.2017 | ||
FI | 29.03.2017 | ||
HR | 29.03.2017 | ||
IT | 29.03.2017 | ||
LT | 29.03.2017 | ||
LV | 29.03.2017 | ||
NL | 29.03.2017 | ||
PL | 29.03.2017 | ||
RO | 29.03.2017 | ||
RS | 29.03.2017 | ||
SE | 29.03.2017 | ||
SK | 29.03.2017 | ||
BG | 29.06.2017 | ||
NO | 29.06.2017 | ||
GR | 30.06.2017 | ||
IS | 29.07.2017 | ||
Former [2017/49] | AT | 29.03.2017 | |
CZ | 29.03.2017 | ||
EE | 29.03.2017 | ||
ES | 29.03.2017 | ||
FI | 29.03.2017 | ||
HR | 29.03.2017 | ||
IT | 29.03.2017 | ||
LT | 29.03.2017 | ||
LV | 29.03.2017 | ||
NL | 29.03.2017 | ||
RO | 29.03.2017 | ||
RS | 29.03.2017 | ||
SE | 29.03.2017 | ||
SK | 29.03.2017 | ||
BG | 29.06.2017 | ||
NO | 29.06.2017 | ||
GR | 30.06.2017 | ||
IS | 29.07.2017 | ||
Former [2017/48] | CZ | 29.03.2017 | |
FI | 29.03.2017 | ||
HR | 29.03.2017 | ||
LT | 29.03.2017 | ||
LV | 29.03.2017 | ||
NL | 29.03.2017 | ||
RS | 29.03.2017 | ||
SE | 29.03.2017 | ||
BG | 29.06.2017 | ||
NO | 29.06.2017 | ||
GR | 30.06.2017 | ||
Former [2017/41] | FI | 29.03.2017 | |
HR | 29.03.2017 | ||
LT | 29.03.2017 | ||
LV | 29.03.2017 | ||
NL | 29.03.2017 | ||
RS | 29.03.2017 | ||
SE | 29.03.2017 | ||
BG | 29.06.2017 | ||
NO | 29.06.2017 | ||
GR | 30.06.2017 | Documents cited: | Search | [A]US2008016341 (STADDON JESSICA N [US], et al) [A] 1-15 * the whole document * | by applicant | - NTT CRYPTOGRAPHIC PRIMITIVES, (20100715), URL: http://info.isl.ntt.co.jp/crypt/camellia/technology.html | - J. KATZ; A. SAHAI; B. WATERS, "Predicate Encryption Supporting Disjunction, Polynomial Equations, and Inner Products", EUROCRYPT, (2008), pages 146 - 162 | - "Fully Secure Functional Encryption with General Relations from the Decisional Linear Assumption", TATSUAKI OKAMOTO; KATSUYUKI TAKASHIMA, Advances in Cryptology -- CRYPTO 2010, Lecture Notes in Computer Science, SPRINGER-VERLAG, (2010), vol. 6223, pages 191 - 208 | - TATSUAKI OKAMOTO; KATSUYUKI TAKASHIMA, "Hierarchical Predicate Encryption for Inner-Products", ASIACRYPT 2009, (2009), pages 214 - 231 | - A. SHAMIR, "How to Share a Secret", COMMUNICATIONS OF THE ACM, (197911), vol. 22, no. 11, doi:doi:10.1145/359168.359176, pages 612 - 613, XP000565227 DOI: http://dx.doi.org/10.1145/359168.359176 | - JENS GROTH; AMIT SAHAI, "Efficient Non- interactive Proof Systems for Bilinear Groups", ADVANCES IN CRYPTOLOGY - EUROCRYPT 2008, LNCS, (201003), vol. 4965, doi:doi:10.1007/978-3-540-78967-3_24, pages 415 - 432, XP047030420 DOI: http://dx.doi.org/10.1007/978-3-540-78967-3_24 | - IAN F. BLAKE; GADIEL SEROUSSI; NIGEL P. SMART, Elliptic Curves in Cryptography, PEARSON EDUCATION | - ALFRED. J. MENEZES, Elliptic Curve Public Key Cryptosystems, KLUWER ACADEMIC PUBLISHERS, pages 61 - 81 | - A. MIYAJI; M. NAKABAYASHI; S. TAKANO, "New Explicit Conditions of Elliptic Curve Traces for FR Reduction", IEICE TRANS. FUNDAMENTALS, (200105), vol. E84-A, no. 5, pages 1234 - 1243, XP001060011 | - "Constructing Elliptic Curves with Prescribed Embedding Degrees", P. S. L. M. BARRETO; B. LYNN; M. SCOTT, Proc. SCN '2002, LNCS, SPRINGER-VERLAG, (2003), vol. 2576, pages 257 - 267 | - R. DUPONT; A. ENGE; F. MORAIN, BUILDING CURVES WITH ARBITRARY SMALL MOV DEGREE OVER FINITE PRIME FIELDS, URL: http://eprint.iacr.org/2002/094 | - AMIT SAHAI; BRENT WATERS, One of 4 papers from Eurocrypt 2008 invited to the Journal of Cryptology | - KAORU KUROSAWA; WAKAHA OGATA, Basic Mathematics of Modern Cryptography (IEICE Lecture Series, CORONA PUBLISHING CO., LTD., (200403), pages 116 - 119 | - V. S. MILLER, SHORT PROGRAMS FOR FUNCTIONS ON CURVES, (1986), URL: http://crypto.stanford.edu/miller/miller.pdf | - "Constructing Elliptic Curves with Prescribed Embedding Degrees", P.S.L.M. BARRETO; B. LYNN; M. SCOTT, Proc. SCN '2002, LNCS, SPRINGER-VERLAG, (2002), vol. 2576, pages 257 - 267 | - JONATHAN KATZ; AMIT SAHAI; BRENT WATERS, "Function encryption supporting Disjunctions, Polynomial Equations, and Inner Products", ONE OF FOUR PAPERS FROM EUROCRYPT 2008 INVITED BY THE JOURNAL OF CRYPTOLOGY | - "A Course in Computational Algebraic Number Theory", H. COHEN, GTM, SPRINGER-VERLAG, (1993), vol. 138 |