Invention Grant
- Patent Title: Key encryption key wrapping
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Application No.: US16606462Application Date: 2018-06-01
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Publication No.: US11689357B2Publication Date: 2023-06-27
- Inventor: Joshua Serratelli Schiffman , Thalia Laing , Shivaun Albright
- Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
- Applicant Address: US TX Spring
- Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
- Current Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
- Current Assignee Address: US TX Spring
- Agency: Knobbe, Martens, Olson & Bear, LLP
- International Application: PCT/US2018/035595 2018.06.01
- International Announcement: WO2019/231465A 2019.12.05
- Date entered country: 2019-10-18
- Main IPC: H04L9/08
- IPC: H04L9/08 ; G06F3/12 ; G06F21/31 ; G06F21/60

Abstract:
In an example, a method of encryption is described to include generation of a content encryption key and a key encryption key. In that example, the content encryption key is wrapped based on a key wrap operation using the key encryption key and the wrapped content encryption key is encrypted using a policy encryption key. Further in that example, the policy encryption key is encrypted using a public key corresponding to a print apparatus. In an example, a method of decryption is described. The example method of decryption performs recovery of a policy object using a private key corresponding to a print apparatus. In that example, the policy object includes a wrapped key that is unwrapped using a key encryption key to recover a content encryption key usable to decrypt an encrypted electronic document.
Public/Granted literature
- US20210377007A1 KEY ENCRYPTION KEY WRAPPING Public/Granted day:2021-12-02
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