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Backup and recovery method of user key of TCM (Trusted Cryptography Module)

A technology of user key and recovery method, applied in key distribution, can solve problems such as damage, user loss, user key loss, etc.

Active Publication Date: 2012-11-07
NATIONZ TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are more and more data encryption applications based on trusted computing security chips in the market, but due to the destruction of the operating system, the data in the trusted security chip is artificially forcibly cleared, etc., the user key will be lost, so that the encrypted data cannot be encrypted. Decryption may bring immeasurable losses to users

Method used

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  • Backup and recovery method of user key of TCM (Trusted Cryptography Module)
  • Backup and recovery method of user key of TCM (Trusted Cryptography Module)

Examples

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Embodiment Construction

[0036] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0037] It should be noted that, if there is no conflict, the embodiments of the present invention and various features in the embodiments can be combined with each other, and all are within the protection scope of the present invention. In addition, the steps shown in the flow diagrams of the figures may be performed in a computer system, such as a set of computer-executable instructions, and, although a logical order is shown in the flow diagrams, in some cases, the sequence may be different. The steps shown or described are performed in the order herein.

[0038] An embodiment of the present invention discloses a user key backup method of TCM, figure 1 It is a logic flow chart of the user key backup method in the...

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Abstract

The invention relates to a backup and recovery method of a user key of Ta CM (Trusted Cryptography Module). The backup method of the user key comprises the steps of: acquiring a backup key generated by a TCM chip; acquiring the user key to be backed up according to a TSM (TCM service module) key migration interface; encrypting the user key through the backup key; storing the encrypted key file to a storage medium. According to the technical scheme of the backup and recovery method, the translating or exportable user key for deciphering the encrypted key can be backed up, therefore, under the condition that the operation system is damaged or the key is lost, the user key can be recovered, and the encrypted data can be deciphered. Simultaneously the backup and recovery method is suitable for recovering the user key which has been backed up on the other computer.

Description

technical field [0001] The invention relates to the field of trusted computing, and mainly relates to a TCM (Trusted Cryptography Module) user key backup and recovery method. Background technique [0002] With the development of computer technology and trusted computing, more and more computers have trusted computing security chips, and there are more and more applications based on trusted computing, such as hard disk protection based on trusted computing, hard disk Data protection, mobile storage device protection, mobile storage device data protection, etc. At present, there are more and more data encryption applications based on trusted computing security chips in the market, but due to the destruction of the operating system, the data in the trusted security chip is artificially forcibly cleared, etc., the user key will be lost, so that the encrypted data cannot be encrypted. Decryption may bring immeasurable losses to users. Contents of the invention [0003] The in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08
Inventor ไป˜ๆœˆๆœ‹
Owner NATIONZ TECH INC