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Patent Searching and Data


Title:
METHOD AND DEVICE FOR DETERMINING TRUST STATE OF TPM, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2019/120231
Kind Code:
A1
Abstract:
A method and a device for determining a trust state of a TPM, and a storage medium, pertaining to the technical field of data security. The method comprises: an authenticating party (102) sending an unsealing request to a host machine (101), such that the host machine (101) unseals a PCR value in a current TPM according to a sealing key handle carried in the unsealing request, and sends authentication information to the authenticating party (102) according to an unsealing authentication key obtained from the unsealing. The sealing key handle is sent to the authenticating party (102) after the host machine (101) has sealed the PCR value in the TPM according to a first authentication key while being in an initialization state, and the first authentication key is obtained by encrypting, according to a local key of the host machine (101), a second authentication key transmitted on an encrypted channel between the authentication party (102) and the host machine (101). Therefore, the invention enables any authenticating party (102) that has established an encrypted channel with the host machine (101) to determine the trust state of the TPM of the host machine (101) according to the second authentication key transmitted on the encrypted channel, thereby eliminating the need to deploy a remote certification server for determining the trust state of the TPM.

Inventors:
MEN FANGLONG (CN)
WANG HONGLEI (CN)
LI FANGZHAN (CN)
Application Number:
PCT/CN2018/122188
Publication Date:
June 27, 2019
Filing Date:
December 19, 2018
Export Citation:
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Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L9/32
Foreign References:
CN101951388A2011-01-19
CN105873031A2016-08-17
CN107104804A2017-08-29
CN102045356A2011-05-04
US20170041147A12017-02-09
CN201711403413A2017-12-22
Other References:
See also references of EP 3720042A4
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