Cryptography Tools
Hash Function Tool
About Hash Functions
Hash functions are one-way mathematical functions that convert input data of any size into a fixed-size hash value. They are fundamental to digital signatures, password storage, data integrity verification, and blockchain technology.
Key Properties:
- Deterministic: Same input always produces the same hash
- Fixed Output Size: Hash length is constant regardless of input size
- Avalanche Effect: Small input changes cause dramatic hash changes
- One-way: Computationally infeasible to reverse
- Collision Resistant: Hard to find two inputs with the same hash
Hash Generator
Hash Result:
Hash will appear here...
Hash Details:
Hash Comparison
Compare how different algorithms hash the same input:
Hash Verification
Verify if input data matches an expected hash value:
Algorithm Comparison
| Algorithm | Output Size | Security Status | Common Uses |
|---|---|---|---|
| MD5 | 128 bits (32 hex chars) | 🔴 Broken - Do not use | Legacy systems, checksums (non-security) |
| SHA-1 | 160 bits (40 hex chars) | 🟡 Deprecated - Avoid | Legacy systems, Git (being phased out) |
| SHA-256 | 256 bits (64 hex chars) | 🟢 Secure | Bitcoin, SSL/TLS, digital signatures |
| SHA-512 | 512 bits (128 hex chars) | 🟢 Secure | High-security applications |
| SHA3-256 | 256 bits (64 hex chars) | 🟢 Secure | Modern applications, NIST standard |
| SHA3-512 | 512 bits (128 hex chars) | 🟢 Secure | High-security modern applications |
| BLAKE2b-512 | 512 bits (128 hex chars) | 🟢 Secure | High-performance applications |