Application of Hard Disk Encryption System in Information Security

From the hard disk encryption system of study back and status in quo of national and foreign,the elements of harddisk encryption is analysed,especially,the three architectures of hard disk encryption which based on driver filtrate.DSP chip and FPGA,are analysed and compared.For the difficult problem,key mangment is dicuessed in the paper.At last,the develop trend of the harddisk encryption is forecast.