Abstract: A file encrypting method and apparatus, and a file decrypting method and apparatus is provided. The method includes following steps: creating a virtual disk; the virtual disk receiving a writing request from a file system, encrypting data in the writing request; and notifying the file system to write the encrypted data into a corresponding physical disk, so that the file system writes the encrypted data into the corresponding physical disk after receiving a notification from the virtual disk. The methods and apparatuses can employ the virtual disk to encrypt data in the writing request and decrypt the data required by the reading request, and this manner achieves highly-reliable, secure and effective file encrypting.

Abstract: A file encrypting method and apparatus, and a file decrypting method and apparatus is provided. The method includes following steps: creating a virtual disk; the virtual disk receiving a writing request from a file system, encrypting data in the writing request; and notifying the file system to write the encrypted data into a corresponding physical disk, so that the file system writes the encrypted data into the corresponding physical disk after receiving a notification from the virtual disk. The methods and apparatuses can employ the virtual disk to encrypt data in the writing request and decrypt the data required by the reading request, and this manner achieves highly-reliable, secure and effective file encrypting.