Secure single sign-on to operating system via power-on password
US7484241B2 · kind B2 · utility
6Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2004 |
| Grant date | Jan 27, 2009 |
| Priority date | — |
| Expiry date | Mar 16, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/41
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and arrangements are disclosed for secure single sign on to an operating system using only a power-on password. In many embodiments modified BIOS code prompts for, receives and verifies the power-on password. The power-on password is hashed and stored in a Platform Configuration Register of the Trusted Platform Module. In a setup mode, the trusted platform module encrypts the operating system password using the hashed power-on password. In a logon mode, the trusted platform module decrypts the operating system password using the hashed power-on password.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.