Method for startup identity authentication of computer capable of protecting hard disk data

Abstract

The invention discloses a method for the startup identity authentication of a computer capable of protecting hard disk data, which comprises the following steps: after formatting, inserting a U disk into a computer; copying a bootstrap sector, disk partition table information, an operation system boot sector in a hard disk to the U disk, storing password information in the U disk, writing a new bootstrap program into the bootstrap sector to render the hard disk in an unknown system state, and withdrawing the U disk; after the insertion of the U disk, starting the computer to execute the modified bootstrap program in the hard disk, to give a prompt for password input, and to compare an input password with a preserved password; if the two passwords are the same, copying the disk partition table information and a operation system bootstrap sector of an original disk to the hard disk; executing an original bootstrap program and starting the program; and before the completion of the startup of an operation system, rendering the hard disk in an unknown system state again. The invention effectively protects all data files stored in the hard disk and greatly improves the safety of the hard disk data.

Description

technical field [0001] The invention belongs to the field of computer system security, and relates to a computer boot identity authentication method, which is used for controlling the unauthorized use of the computer and the protection of hard disk data. Background technique [0002] In order to ensure the security of the user's computer system and avoid unauthorized use by others, the computer startup identity authentication technology is usually used to identify the user's identity by entering a password during the startup process of the computer. General computer systems usually provide two kinds of power-on identity authentication technologies: one is based on Basic Input Output System (Basic Input Output System, BIOS)-level power-on identity authentication, referred to as BIOS password authentication, that is, a password is set on the computer BIOS in advance, The BIOS prompts you to enter a password for identity authentication; the second is based on the operating syst...

AI Technical Summary

Problems solved by technology

From the perspective of system security level, this kind of autonomous power-on identity authentication has low security and is not suitable for use in environments with high security requirements.