Abstract: A method for application protection is applicable to the field of computer technologies and includes: detecting an operation state of a target application; terminating the target application to implement protection of the target application in response to detecting that the target application is in a target state. When the application is operated, an operating state of the application is detected in real time, and an operation of the application will be terminated once it is detected that the application is in the target state. A risk in the application may be detected in time, so that the application may be protected in time.

Abstract: A method for file encryption includes: determining, in response to obtaining a file to be encrypted, a first secret key for encrypting a file name according to the file name of the file to be encrypted; encrypting the file name according to the first secret key to obtain file name encryption information; and sending the file to be encrypted and the file name encryption information to a local service layer, in order that the local service layer encrypts a file content of the file to be encrypted based on the file to be encrypted and the file name encryption information. The encryption operation of the file content is mainly performed in the local service layer, so that the security protection of the encrypted file may be guaranteed.

Abstract: A method for file encryption includes: determining, in response to obtaining a file to be encrypted, a first secret key for encrypting a file name according to the file name of the file to be encrypted; encrypting the file name according to the first secret key to obtain file name encryption information; and sending the file to be encrypted and the file name encryption information to a local service layer, in order that the local service layer encrypts a file content of the file to be encrypted based on the file to be encrypted and the file name encryption information. The local service layer is high in security and is not prone to be decompiled and cracked. Moreover, the encryption operation of the file content is mainly performed in the local service layer, so that the security protection of the encrypted file may be guaranteed.