AIS Receives New Patent from U.S. Patent Office Expanding its Portfolio to 21 Issued Patents

Assured Information Security (AIS) is pleased to announce that the U.S. Patent and Trademark Office has issued the company a new patent in 2023, expanding AIS’s intellectual property (IP) and raising its portfolio to 21 issued patents with multiple currently pending.

“Continuing to expand our patent portfolio allows us to bring truly novel technologies to the market,” said Scott Robidoux, Chief Operating Officer at AIS. “This patent, titled Providing Trusted Virtual Secure Cryptoprocessors for Guests, addresses the security challenges related to virtual crytpoprocessors. The team has ensured that the cryptoprocessor of the guest is protected by the cryptoprocessor of the host. This extends the root of trust to the guest operating system, enhancing the overall security of virtualized environments.”

Patent Details:

U.S. Patent Number: 11,645,101 : Providing Trusted Virtual Secure Cryptoprocessors for Guests
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.

Invention is credited to Joel Upham and Richard Turner.

To view the complete list of AIS patents, click here.

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