Chain-of-Custody

Current digital forensic systems suffer from a trust gap cauz evidence logs are stored in centralized servers making them vulnerable to unauthorized modification, backdating, and human errors etc., . This creates uncertainty in verifying who handled the evidence and when, potentially leading to legal disputes. Our solution is a secure digital chain-of-custody management system that ensures integrity, traceability, and non-repudiation of forensic evidence without relying on blockchain technology. The system generates a SHA-256 hash of each evidence file at the time of submission. Every access, transfer, or modification request is logged with:

1. Secure timestamping

2. Role-based authentication

3. Cryptographic hash verification

4. Immutable audit logging

Large evidence files are stored securely, while integrity is verified using hash comparison to detect any tampering. The platform will follow a zero-trust security model where every custodian is authenticated through strong identity verification and digitally signed actions, ensuring accountability and non-repudiation. Key Features are :

1. SHA-256 integrity verification

2. Secure timestamp-based audit trail

3. Role-based access control (RBAC)

4. Tamper-detection mechanism

5. Centralized secure logging with write-once architecture

6. Real-time verification of evidence integrity