Alibaba Group Holding Limited
METHOD AND APPARATUS FOR DATA STORAGE AND VERIFICATION

Abstract:

Disclosed are data storage and verification methods and a device executable in a trusted execution environment. The data storage method comprises: encrypting, using a first key, user data and version information of the user data to generate first ciphertext, and storing the first ciphertext into a general storage space (S310); generating verification information of the user data (S320); and storing the version information and the verification information into a secure storage space (S330). The present disclosure effectively prevents version rollback of user data.