TA image storage method and device and terminal

The invention discloses a TA image storage method and device and a terminal and relates to the field of information security. The method comprises the steps that a data storage structure correspondingto a storage form of a TA image is set, wherein the storage form comprises storing the TA image as an object, file or block in TEE, storing the TA image with a signature, storing the TA image as a ciphertext TA image and the like; and the storage form of the TA image needing storage is acquired, the data storage structure corresponding to the storage form is used as a TA image storage structure,and the TA image needing storage is encapsulated and stored according to the TA image storage structure and preset encapsulation rules. The storage method and device and the terminal are not only suitable for the situation of TA installation through TAM but also suitable for the situation of TA downloading through OTA or an application store, have high flexibility and universality and are suitablefor various TEE platforms,