Video acquisition method for privacy protection and corresponding playing method thereof

The invention discloses a privacy protection video acquisition method and a corresponding playing method thereof. The acquisition method comprises the following steps: preparing an initial environment, providing a trusted execution environment by a cloud storage manufacturer, setting an enclave in the trusted execution environment, initializing the trusted execution environment, and randomly generating a root symmetric key in the enclave; the trusted execution environment generates a certificate, wherein the certificate comprises a program which is currently operated in the trusted execution environment and a signature of the trusted execution environment; the video acquisition equipment is connected to a trusted execution environment provided by a cloud storage manufacturer through a network, and the signature of the trusted execution environment is verified to be correct; the video acquisition equipment generates a pair of asymmetric encryption public and private keys, stores the asymmetric encryption publi