Abstract: A virtual view drawing method, a rendering method and apparatus, and a decoding method are provided. A first visibility map and a first texture map of a target view are generated. Region segmentation is performed on the first texture map to obtain a region segmentation result. A parameter representing segmentation performance is determined according to the region segmentation result. Region re-segmentation is performed on the first texture map when the parameter representing segmentation performance does not satisfy a first condition, to obtain a final region segmentation of the first texture map. Pixels to-be-updated in a region in the first visibility map are updated according to the final region segmentation result of the first texture map, to obtain a second visibility map. The second visibility map is shaded to obtain a second texture map of the target view.

Abstract: A method for remotely acquiring secret key, comprising steps of detecting an injection key acquisition instruction; generating a temporary key pair when the injection key acquisition instruction is detected; acquiring a locally stored private key in a random key pair, and using a private key in the random key pair to perform signature on a public key in the temporary key pair to generate a temporary key signature; acquiring a first identity authentication certificate; sending the temporary key signature and the first identity authentication certificate to a remote injection server; receiving an injection key ciphertext signature and a second identity authentication certificate which is returned by the remote injection server according to the temporary key signature and the first identity authentication certificate; and acquiring and storing an injection key according to the injection key ciphertext signature and the second identity authentication certificate.

Abstract: A method for remotely acquiring secret key, comprising steps of detecting an injection key acquisition instruction; generating a temporary key pair when the injection key acquisition instruction is detected; acquiring a locally stored private key in a random key pair, and using a private key in the random key pair to perform signature on a public key in the temporary key pair to generate a temporary key signature; acquiring a first identity authentication certificate; sending the temporary key signature and the first identity authentication certificate to a remote injection server; receiving an injection key ciphertext signature and a second identity authentication certificate which is returned by the remote injection server according to the temporary key signature and the first identity authentication certificate; and acquiring and storing an injection key according to the injection key ciphertext signature and the second identity authentication certificate.