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Cryptographic System, Re Encryption Key Generation Device, And Re Encryption Device
Abstract: 000001*rk011111100*rk01An encryption apparatus (200) outputs an encrypted text (ct) in which one of two mutually corresponding pieces of attribute information (x v) has been set. A decryption apparatus (300) receives a decryption key (k*) in which the other of the two pieces of attribute information (x v) has been set and outputs a re encryption key (rk) including a decryption key (k) which has been obtained by converting the received decryption key (k*) by use of a piece of conversion information (r) and also including an encrypted text (ct ) in which one of two mutually corresponding pieces of attribute information (x v) has been set and in which the conversion information (r) has been encrypted. A re encryption apparatus (400) outputs a re encrypted text (ct) including a session key (K ) which has been obtained by decrypting the encrypted text (ct) by use of the decryption key (k) and also including the encrypted text (ct ).
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
06 July 2016
Publication Number
36/2016
Publication Type
INA
Invention Field
COMMUNICATION
Status
Email
patent@depenning.com
Parent Application
Patent Number
Legal Status
Grant Date
2023-04-21
Renewal Date
Applicants
MITSUBISHI ELECTRIC CORPORATION
7 3 Marunouchi 2 chomeChiyoda ku Tokyo
1008310
Inventors
1. KAWAI Yutaka
c/o Mitsubishi Electric Corporation 7 3 Marunouchi 2 chome Chiyoda ku Tokyo
1008310
2. TAKASHIMA Katsuyuki
c/o Mitsubishi Electric Corporation 7 3 Marunouchi 2 chome Chiyoda ku Tokyo
1008310
Specification
SOFT COPY ATTACHED IN PDF
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 201647023181-IntimationOfGrant21-04-2023.pdf | 2023-04-21 |
| 1 | PROOF OF RIGHT [06-07-2016(online)].pdf | 2016-07-06 |
| 2 | 201647023181-PatentCertificate21-04-2023.pdf | 2023-04-21 |
| 2 | Power of Attorney [06-07-2016(online)].pdf | 2016-07-06 |
| 3 | Form 5 [06-07-2016(online)].pdf | 2016-07-06 |
| 3 | 201647023181-FORM 3 [19-12-2022(online)].pdf | 2022-12-19 |
| 4 | Form 3 [06-07-2016(online)].pdf | 2016-07-06 |
| 4 | 201647023181-FORM 3 [10-12-2021(online)].pdf | 2021-12-10 |
| 5 | Form 18 [06-07-2016(online)].pdf_214.pdf | 2016-07-06 |
| 5 | 201647023181-Correspondence And POA_25-11-2021.pdf | 2021-11-25 |
| 6 | Form 18 [06-07-2016(online)].pdf | 2016-07-06 |
| 6 | 201647023181-FORM-26 [27-05-2020(online)].pdf | 2020-05-27 |
| 7 | Form 1 [06-07-2016(online)].pdf | 2016-07-06 |
| 7 | 201647023181-ABSTRACT [13-05-2020(online)].pdf | 2020-05-13 |
| 8 | Drawing [06-07-2016(online)].pdf | 2016-07-06 |
| 8 | 201647023181-CLAIMS [13-05-2020(online)].pdf | 2020-05-13 |
| 9 | 201647023181-COMPLETE SPECIFICATION [13-05-2020(online)].pdf | 2020-05-13 |
| 9 | Description(Complete) [06-07-2016(online)].pdf | 2016-07-06 |
| 10 | 201647023181-DRAWING [13-05-2020(online)].pdf | 2020-05-13 |
| 10 | 201647023181.pdf | 2016-07-08 |
| 11 | 201647023181-FER_SER_REPLY [13-05-2020(online)].pdf | 2020-05-13 |
| 11 | Other Document [11-07-2016(online)].pdf | 2016-07-11 |
| 12 | 201647023181-FORM 3 [13-05-2020(online)].pdf | 2020-05-13 |
| 12 | Marked Copy [11-07-2016(online)].pdf | 2016-07-11 |
| 13 | 201647023181-FORM-26 [13-05-2020(online)].pdf | 2020-05-13 |
| 13 | Form 13 [11-07-2016(online)].pdf | 2016-07-11 |
| 14 | 201647023181-Information under section 8(2) [13-05-2020(online)].pdf | 2020-05-13 |
| 14 | Description(Complete) [11-07-2016(online)].pdf | 2016-07-11 |
| 15 | 201647023181-Form 1-110716.pdf | 2016-07-28 |
| 15 | 201647023181-OTHERS [13-05-2020(online)].pdf | 2020-05-13 |
| 16 | 201647023181-Correspondence-F1-110716.pdf | 2016-07-28 |
| 16 | 201647023181-FER.pdf | 2019-11-19 |
| 17 | Form 3 [28-12-2016(online)].pdf | 2016-12-28 |
| 17 | 201647023181-FORM 3 [15-02-2019(online)].pdf | 2019-02-15 |
| 18 | 201647023181-FORM 3 [12-02-2019(online)].pdf | 2019-02-12 |
| 19 | 201647023181-FORM 3 [15-02-2019(online)].pdf | 2019-02-15 |
| 19 | Form 3 [28-12-2016(online)].pdf | 2016-12-28 |
| 20 | 201647023181-Correspondence-F1-110716.pdf | 2016-07-28 |
| 20 | 201647023181-FER.pdf | 2019-11-19 |
| 21 | 201647023181-Form 1-110716.pdf | 2016-07-28 |
| 21 | 201647023181-OTHERS [13-05-2020(online)].pdf | 2020-05-13 |
| 22 | 201647023181-Information under section 8(2) [13-05-2020(online)].pdf | 2020-05-13 |
| 22 | Description(Complete) [11-07-2016(online)].pdf | 2016-07-11 |
| 23 | 201647023181-FORM-26 [13-05-2020(online)].pdf | 2020-05-13 |
| 23 | Form 13 [11-07-2016(online)].pdf | 2016-07-11 |
| 24 | Marked Copy [11-07-2016(online)].pdf | 2016-07-11 |
| 24 | 201647023181-FORM 3 [13-05-2020(online)].pdf | 2020-05-13 |
| 25 | 201647023181-FER_SER_REPLY [13-05-2020(online)].pdf | 2020-05-13 |
| 25 | Other Document [11-07-2016(online)].pdf | 2016-07-11 |
| 26 | 201647023181-DRAWING [13-05-2020(online)].pdf | 2020-05-13 |
| 26 | 201647023181.pdf | 2016-07-08 |
| 27 | 201647023181-COMPLETE SPECIFICATION [13-05-2020(online)].pdf | 2020-05-13 |
| 27 | Description(Complete) [06-07-2016(online)].pdf | 2016-07-06 |
| 28 | 201647023181-CLAIMS [13-05-2020(online)].pdf | 2020-05-13 |
| 28 | Drawing [06-07-2016(online)].pdf | 2016-07-06 |
| 29 | 201647023181-ABSTRACT [13-05-2020(online)].pdf | 2020-05-13 |
| 29 | Form 1 [06-07-2016(online)].pdf | 2016-07-06 |
| 30 | 201647023181-FORM-26 [27-05-2020(online)].pdf | 2020-05-27 |
| 30 | Form 18 [06-07-2016(online)].pdf | 2016-07-06 |
| 31 | Form 18 [06-07-2016(online)].pdf_214.pdf | 2016-07-06 |
| 31 | 201647023181-Correspondence And POA_25-11-2021.pdf | 2021-11-25 |
| 32 | Form 3 [06-07-2016(online)].pdf | 2016-07-06 |
| 32 | 201647023181-FORM 3 [10-12-2021(online)].pdf | 2021-12-10 |
| 33 | Form 5 [06-07-2016(online)].pdf | 2016-07-06 |
| 33 | 201647023181-FORM 3 [19-12-2022(online)].pdf | 2022-12-19 |
| 34 | Power of Attorney [06-07-2016(online)].pdf | 2016-07-06 |
| 34 | 201647023181-PatentCertificate21-04-2023.pdf | 2023-04-21 |
| 35 | PROOF OF RIGHT [06-07-2016(online)].pdf | 2016-07-06 |
| 35 | 201647023181-IntimationOfGrant21-04-2023.pdf | 2023-04-21 |
Search Strategy
| 1 | 2019-06-1217-11-19_24-10-2019.pdf |