Tampering monitoring system, management device, protection control module, and detection module
US9311487B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2012 |
| Grant date | Apr 12, 2016 |
| Priority date | — |
| Expiry date | Sep 25, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/16
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A management device 200d comprises: a key share generation unit 251d generating a plurality of key shares by decomposing a decryption key, the decryption key being for decrypting an encrypted application program generated as a result of encryption of the application program; and an output unit 252d outputting each of the key shares to a different one of a plurality of detection modules. The detection modules acquire and store therein the key shares. The protection control module 120d comprises: an acquisition unit 381d acquiring the key shares from the detection modules; a reconstruction unit 382d reconstructing the decryption key by composing the key shares; a decryption unit 383d decrypting the encrypted application program with use of the decryption key; and a deletion unit 384d deleting the decryption key, after the decryption by the decryption unit is completed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.