Method for obtaining root key and server

Abstract

The embodiment of the invention discloses a method for obtaining a root key and a server. The method comprises the steps of obtaining a unique identifier of a security chip carried by root key obtaining request information, wherein the root key obtaining request information is sent by a terminal; encrypting the unique identifier through adoption of a first encryption key and sending the encrypted unique identifier to a service provider server corresponding to the security chip; receiving the encrypted root key returned by the service provider server; decrypting the encrypted root key through adoption of a first decryption key, thereby obtaining the root key corresponding to the unique identifier; encrypting the root key through adoption of a second encryption key and sending the encrypted root key to the terminal according to an identifier of the terminal carried by the root key obtaining request information; and decrypting the encrypted root key by the terminal through adoption of a second decryption key, thereby obtaining the root key. According to the embodiment of the invention, the risk of leaking the root key in a transmission process can be effectively reduced, the transmission security of the root key is improved, and the security of the information in the terminal is improved.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a method and server for obtaining a root key. Background technique [0002] At present, terminal information security has drawn more and more attention from users and the industry, and the key to the current security strategy is encryption technology. An encryption technology provided by the prior art relies on a hardware platform in the terminal, for example, a security chip. The terminal can encrypt the data to be encrypted according to the root key (Root Key) of the security chip and the preset encryption algorithm. Among them, the root key is derived from the key of the security chip, and is used for the key of the first layer of the hierarchical key. [0003] Before the terminal needs to use the functions or services provided by the security chip, it needs to obtain the root key of the security chip from the server of the security chip manufacturer in advance. Since th...

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Problems solved by technology

[0003] Before the terminal needs to use the functions or services provided by the security chip, it needs to obtain the root key of the security chip from the server of the security chip manufacturer in advance. Since the root key of the security chip is the root If it is leaked during transmission to the terminal, it will pose a serious threat to the information security of the terminal

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