关键词: Xen, 虚拟化安全, 磁盘加解密, QEMU

Abstract: Concerning the storage of the Xen disk image as plain text, the paper proposed a real-time encryption and decryption method for the disk image of Xen. Using the transparent encryption and decryption method, and inserting the transparent encryption and decryption module into the QEMU of Xen, this method encrypted and decrypted the disk image of virtual machine and solved the problem of the security threat to the virtual machine disk data of the Xen's users. Through the contrast test for the encrypted and unencrypted virtual machine, the effectiveness and performance reliability of the method were verified.

Key words: Xen, virtualization security, disk encryption, QEMU