SHA Signature Checker

SHA (Secure Hash Algorithm) generates a fixed-size hash value from input data. This tool calculates hashes and verifies them against expected values to ensure data integrity.

Common Uses

• Verify downloaded files haven't been corrupted
• Check software downloads against published checksums
• Verify backup file integrity
• Compare file contents without sharing the actual data
• Detect unauthorized modifications to files

Algorithm Comparison

• SHA-1: 160-bit hash, legacy use only (not secure)
• SHA-256: 256-bit hash, widely used, recommended
• SHA-384: 384-bit hash, higher security
• SHA-512: 512-bit hash, maximum security

Tips

• SHA-256 is the most commonly used for file verification
• Hashes are case-insensitive when comparing
• Even a tiny change in data produces a completely different hash