Patents
US 11645101 B2: Providing trusted virtual secure cryptoprocessors for guests
- Granted
- 2023-05-09
- Filed
- 2020-03-31 application 16835875
- Type
- Utility · 17 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Provision of a virtual secure cryptoprocessor (VSC) for a guest virtual machine (VM), part of a first guest, of a hypervisor of a computer system, includes (i) storing guest VM state and VSC state together in an encrypted virtual hard disk drive file, (ii) storing a decryption key in a sealed partition, of a second guest, sealed against a physical secure cryptoprocessor, (iii) based on verifying that a host computing environment of the computer system is in a trusted state and on booting the hypervisor thereon, unsealing the sealed partition of the second guest, the unsealing providing the decryption key, and decrypting the encrypted virtual hard disk drive file using the decryption key, where the decrypting decrypts the stored guest VM state for execution of the guest VM and decrypts the VSC state to provide the VSC for use by the guest VM.
Source: PVGPATDIS, file of 2026-04-10 (ipg230509_r1.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Assured Information Security, Inc. 24 patents | US company or organization | Rome, NY | Assured Information Security, Inc. Form D issuer EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Richard Turner | Verona, NY | 2 | PVGPATDIS, file of 2026-04-10 | |
| Joel Upham | Paris, NY | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G06F | Electric digital data processing | G06F9/45558 | PVGPATDIS, file of 2026-04-10 |
| H04L | Transmission of digital information, e.g. telegraphic communication | H04L9/0897 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2024-05-07 | Government interest Confirmatory license | ASSURED INFORMATION SECURITY, INC. signed 2024-04-30 | GOVERNMENT OF THE UNITED STATES AS REPRESENTED BY THESECRETARY OF THE AIR FORCE ROME, NY | 67335/218 | ECORSEXC, file of 2026-09-25 |
| 2020-03-31 | Assignment Assignment of assignor's interest | TURNER, RICHARD signed 2020-03-15 UPHAM, JOEL signed 2020-03-27 | ASSURED INFORMATION SECURITY, INC. ROME, NY | 52274/538 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.