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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