EP0443423A3
Method for executing trust-path commands
Abstract
A method for executing trusted commands, in which a trusted command is first received from a user at a user terminal and parsed by untrusted code; then passed to a trusted computing base for execution. The trusted computing base displays to the user for confirmation some indication of what is to be done. Confirmation of the commands prevents unauthorized modification of the commands and increases system confidence. A randomly (or pseudo-randomly) generated process identifier is employed to verify the existence of a trusted path.

Term
Term ended
Projected expiry passed 13 February 2011, 15.6 years ago.
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- Filed
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- Projected expiry
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1 sheet
Sheet 1
Every citation, both ways
| Document | Relation | Office | Category | Cited during |
|---|---|---|---|---|
| EP0326699A2 | Cites | European Patent Office (EPO) | X | Search report |
| IEEE SYMPOSIUM ON SECURITY AND PRIVACY, April 1988, OAKLAND, US; pages 147 - 155, S.WISEMAN ET AL 'The Trusted Path between SMITE and the User' | Non-patent | – | – | Search report |
12 members in 6 offices; this record represents the family
Priority claims2
| Document | Office | Kind | Date |
|---|---|---|---|
| 479666 | United States of America | – | |
| 47966690 | United States of America | A |
Members12
| Document | Office | Kind | |
|---|---|---|---|
| GB9103055D0 | United Kingdom | D0 | |
| CA2036257A1 | Canada | A1 | |
| AU7103191A | Australia | A | |
| EP0443423A2 | European Patent Office (EPO) | A2 | |
| EP0443423A3This record | European Patent Office (EPO) | A3 | |
| EP0443423B1 | European Patent Office (EPO) | B1 | |
| DE69132809D1 | Germany | D1 | |
| DE69132809T2 | Germany | T2 | |
| US6507909B1 | United States of America | B1 | |
| US6871283B1 | United States of America | B1 | |
| US2005097354A1 | United States of America | A1 | |
| US7036022B1 | United States of America | B1 |
39 legal events, as 4 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | Office | |
|---|---|---|---|
| Patent reinstated in contracting state [announced from national office to epo]PGRI | PGRI | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Patent expired after termination of 20 yearsExpiredPE20 | PE20 | GB | |
| Discontinued because of reaching the maximum lifetime of a patentV4 | V4 | NL | |
| Expiry of rightR071 | R071 | DE | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)732E | 732E | GB | |
| Nl: other communications concerning ep-patents (part 3 heading xe)A REQUEST FOR RESTORATION TO THE PRIOR STATE AS PROVIDED FOR IN ARTICLE 23 OF THE PATENTS ACT 1995 (SEE PUBLICATION IN HEADING XE OF THE PATENT BULLETIN OF 20030203/03) HAS BEEN GRANTED; THE RESTORATION OF THE PATENT HAS BEEN ENTERED IN THE PATENT REGISTER.NLXE | NLXE | EP | |
| Application for restoration allowed (sect. 28/1977)728Y | 728Y | GB | |
| Nl: other communications concerning ep-patents (part 3 heading xe)A REQUEST FOR RESTORATION TO THE PRIOR STATE (ARTICLE 23 OF THE PATENTS ACT 1995) HAS BEEN FILED ON 20021115.NLXE | NLXE | EP | |
| Application for restoration filed (sect. 28/1977)728V | 728V | GB | |
| No opposition filedOpposition26N | 26N | EP | |
| Nl: lapsed or anulled due to non-payment of the annual feeLapsedNLV4 | NLV4 | EP | |
| Gb: european patent ceased through non-payment of renewal feeCeasedGBPC | GBPC | EP | |
| No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE | PLBE | EP | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA | STAA | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| European patent in force as of 2002-01-01IF02 | IF02 | GB | |
| Corresponds to:REF | REF | EP | |
| Designated contracting statesAK | AK | EP | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
| Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOS IGRAGRAH | GRAH | EP | |
| Despatch of communication of intention to grantORIGINAL CODE: EPIDOS AGRAGRAG | GRAG | EP | |
| Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOS IGRAGRAH | GRAH | EP | |
| Despatch of communication of intention to grantORIGINAL CODE: EPIDOS AGRAGRAG | GRAG | EP | |
| Despatch of communication of intention to grantORIGINAL CODE: EPIDOS AGRAGRAG | GRAG | EP | |
| Title (correction)METHOD AND APPARATUS FOR EXECUTING TRUSTED-PATH COMMANDSRTI1 | RTI1 | EP | |
| Title (correction)METHOD FOR EXECUTING TRUSTED-PATH COMMANDSRTI1 | RTI1 | EP | |
| Party data changed (applicant data changed or rights of an application transferred)RAP1 | RAP1 | EP | |
| First examination report despatched17Q | 17Q | EP | |
| Request for examination filed17P | 17P | EP | |
| Designated contracting statesAK | AK | EP | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | EP | |
| Designated contracting states (corrected)RBV | RBV | EP | |
| Designated contracting statesAK | AK | EP | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI | EP |
Numbers
- Publication
- 0443423
- Application
- 911019859
Titles3
- German
- Verfahren zur Ausführung von Sicherheitswegbefehlen
- English
- Method for executing trust-path commands
- French
- Procédé d'exécution de commandes de voie de sécurité
Classification
- CPC, 2
- G06F21/53
- G06F2211/009
- IPC, 2
- G06F1 00
- G06F21 00
Designated states1
- Contracting states, 1
- Netherlands (Kingdom of the)