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Hash Comparison
Verify data integrity by comparing two hash values
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Hash Algorithm Reference
MD5 (128-bit) Legacy
Message Digest Algorithm 5. Produces a 32-character hexadecimal hash. Fast but cryptographically broken.
Forensic Use: Quick file identification, legacy system compatibility, non-security checksums.
SHA-1 (160-bit) Deprecated
Secure Hash Algorithm 1. Produces a 40-character hash. Collision attacks demonstrated in 2017.
Forensic Use: Git commits, older evidence systems, transitional verification.
SHA-256 (256-bit) Recommended
Part of SHA-2 family. Produces a 64-character hash. Industry standard for security applications.
Forensic Use: Evidence integrity verification, chain of custody, court admissible documentation.
SHA-512 (512-bit) High Security
Strongest SHA-2 variant. Produces a 128-character hash. Optimal for high-security requirements.
Forensic Use: Critical evidence, long-term archival, maximum collision resistance.
Forensic Best Practices
- Always document hash values before and after any evidence handling
- Use SHA-256 or SHA-512 for court submissions
- Maintain multiple hash types for cross-verification
- Include timestamps with all hash calculations
- Store hash values separately from the original evidence