Key based secure operating system with secure dongle and method, and cryptographic method
US9009488B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 21, 2012 |
| Grant date | Apr 14, 2015 |
| Priority date | — |
| Expiry date | Jan 2, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/602
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A security interface system creates plausible deniability, and consists of a security interface device having a port for a releasable connection to a PC and to a memory key containing an encrypted operating system, the interface device containing logic to decrypt the memory key and a plaintext bootloader, and a further port for a memory card containing a key. The key is entirely encrypted and appears as random data when inspected. The interface device may have a port(s) for a keyboard and mouse. An encryption and decryption method is described, for decrypting a ciphertext into one of two plaintexts by choice of a key, the choice of which plaintext depending on whether the secret is to be revealed or remain confidential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.