User information permission encryption and backup method based on cloud storage technology

Abstract

The present application relates to the field of information security and cloud storage technology, in particular to a user information permission encryption and backup method based on cloud storage technology, comprising: splitting the will plaintext information submitted by the user into multiple information segments, and encrypting each segment using an independent key; uploading the encrypted segments and the corresponding keys to different independent storage partitions of the cloud respectively, and generating a global index file associated with these partitions and binding to an authorized verification terminal. When the terminal initiates an access request containing identity and biological characteristics and the verification is passed, the encrypted segments and the keys are synchronously called from each partition according to the index file; in the secure sandbox environment created in the cloud, all segment decryption and information recombination are completed to restore the will plaintext for authorized access. The present application improves the security of information in the whole process of static storage and dynamic use by physically dispersing the storage of keys and data and centrally processing in the cloud isolation environment.

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