Secure File Deletion Tool - DoD 5220.22-M Implementation

A production-grade implementation of the U.S. Department of Defense's DoD 5220.22-M (NISPOM) standard for secure file deletion. This tool doesn't just "delete" files it obliterates them beyond recovery.

The Problem with Normal "Delete"

When you delete a file normally:

• Only the file system pointer is removed
• The actual data (1s and 0s) remains on the disk
• Recovery software can easily restore the file
• Your sensitive data is still vulnerable

The Solution: DoD 5220.22-M Standard

This tool implements the military-grade 3-pass overwrite method:

The 6-Step Process:

1. Pass 1: Overwrites all addressable locations with binary zeros (0x00)
2. Pass 2: Overwrites all locations with binary ones (0xFF)
3. Pass 3: Overwrites all locations with cryptographically secure random data
4. Pass 4: Verification read to confirm successful overwrite
5. Pass 5: Filename obfuscation (3 random renames)
6. Pass 6: Final filesystem deletion