Method and apparatus for securely storing a public key
Abstract
A method for securely storing a public key for encryption of data in a computing device uses a user-specific key pair which is securely stored in the computing device. A target public key corresponding to a target device is received and a user-specific key pair is obtained from a secure registry. A user-specific private key from the user-specific key pair is used to create a target key verifier based on the target public key. The target key verifier and the target public key are stored in a storage area. The target key verifier and the target public key are retrieved from the storage area and a user-specific public key from the user-specific key pair is applied to the target key verifier to verify the authenticity of the target public key. In the case that the authenticity of the target public key is verified, the data is encrypted with the target public key, thereby creating encrypted data for transmission to the target device.

Term
Term ended
Projected expiry passed 27 November 2022, 3.8 years ago.
- Priority
- Filed
- Published
- Projected expiry
- Today
1 sheet
Sheet 1
Every citation, both ways
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| EP1091285A2 | Cites | European Patent Office (EPO) | Y | Search report | 1-32 |
| US6148387A | Cites | United States of America | Y | Search report | 1-32 |
7 members in 4 offices
Priority claims5
| Document | Office | Kind | Date |
|---|---|---|---|
| 10974 | United States of America | – | |
| 1097401 | United States of America | A | |
| 1097401 | United States of America | A | |
| 10974 | – | – | – |
| US20010010974 | – | – | – |
Members7
| Document | Office | Kind | |
|---|---|---|---|
| US2003105963A1 | United States of America | A1 | |
| CN1423206A | China | A | |
| EP1320009A2 | European Patent Office (EPO) | A2 | |
| JP2003224561A | Japan | A | |
| EP1320009A3This record | European Patent Office (EPO) | A3 | |
| US7305556B2 | United States of America | B2 | |
| CN100454274C | China | C |
11 legal events, as the office reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | |
|---|---|---|
| Application withdrawnWithdrawn18W | 18W | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE APPLICATION HAS BEEN WITHDRAWNSTAA | STAA | |
| First examination report despatched17Q | 17Q | |
| Designation fees paidAKX | AKX | |
| Request for examination filed17P | 17P | |
| Designated contracting statesAK | AK | |
| Request for extension of the european patentAX | AX | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | |
| Designated contracting statesAK | AK | |
| Request for extension of the european patentAX | AX | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI |
Numbers
- Publication
- 1320009
- Publication, DOCDB
- 1320009
- Publication, EPODOC
- EP1320009
- Application
- 2258181
- Application, DOCDB
- 02258181
- Application, EPODOC
- EP20020258181
Titles3
- German
- Verfahren und Vorrichtung zum sicheren Speichern eines öffentlichen Schlüssels
- English
- Method and apparatus for securely storing a public key
- French
- Procédé et dispositif de stockage sécurisé d'une clé publique
Classification
- CPC, 4
- G06F21/608
- G09C5/00
- H04L9/0825
- H04L9/0894
- IPC, 4
- G06F3 12
- G06F12 14
- G06F21 60
- H04L9 08
Designated states2
- Contracting states, 1
- Türkiye
- Extension states, 1
- Slovenia