File encryption system based on fingerprint

In order to guarantee the security of information in the computer storage device, even if the user's login protection is lost, this paper proposes a new encryption algorithm taking fingerprint information as the key. With 32-bits operation, the proposed encryption algorithm occupies a small amount of computer resources, runs fast, and has a good user interface. The variable-length key is used to strengthen the processing effect, and some other standard encryption algorithms are used for improving the convenience.