Secure Hashing Methods in Digital Forensics

Word Count : 3000

Objectives to cover: 

  • Introduction: Explains how secure hashing ensures data integrity during digital forensic investigations.

  • Hash Function Basics: Describes how hash algorithms convert digital evidence into unique fixed-size values.

  • Role in Chain of Custody: Shows how hashing maintains evidence authenticity across every handling stage.

  • Collision Resistance: Highlights the importance of preventing two different inputs from producing the same hash.

  • Popular Hash Algorithms: Covers commonly used forensic algorithms like MD5, SHA-1, and SHA-256.

  • Hashing in Evidence Imaging: Explains how hashes verify that forensic copies exactly match original data.

  • Real-Time Hash Verification: Describes hashing performed during live data acquisition for instant integrity checks.

  • Challenges in Hashing: Points out issues like outdated algorithms and increasing risks of hash collisions.

  • Conclusion: Summarizes how secure hashing strengthens reliability and trustworthiness of forensic evidence.

Reference: IEEE