Invention Grant
- Patent Title: Key-attestation-contingent certificate issuance
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Application No.: US16351877Application Date: 2019-03-13
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Publication No.: US10721080B2Publication Date: 2020-07-21
- Inventor: Christopher Edward Fenner , Peter David Waxman , Gabriel Fortunato Stocco , Kam Kouladjie , Cristian Stefan Salvan , Prabu Raju , Himanshu Soni , Gridhar Viswanathan
- Applicant: Microsoft Technology Licensing, LLC
- Applicant Address: US WA Redmond
- Assignee: Microsoft Technology Licensing, LLC
- Current Assignee: Microsoft Technology Licensing, LLC
- Current Assignee Address: US WA Redmond
- Main IPC: H04L9/32
- IPC: H04L9/32 ; G06F21/57 ; G16H10/60 ; G06F21/62 ; H04L9/08 ; H04L29/06 ; G16H40/20

Abstract:
The present invention provides for streamlined issuance of certificates and other tokens that are contingent on key attestation of keys from a trusted platform module within a computing platform. Various methods are described for wrapping the requested token in a secret, such as an AES key, that is encrypted to a TPM based key in a key challenge. If the requesting platform fails the key challenge, the encrypted certificate or token cannot be decrypted. If requesting platform passes the challenge, the encrypted certificate or token can be decrypted using the AES key recovered from the key challenge.
Public/Granted literature
- US20190280883A1 Key-Attestation-Contingent Certificate Issuance Public/Granted day:2019-09-12
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