SHA Hashing Explained: SHA-256, SHA-512, and When to Use Each
4 min read
Hash functions convert any input into a fixed-size string of characters. The same input always produces the same hash, but you can't reverse-engineer the input from the hash. This one-way property makes them essential for security.
Common SHA Variants
- SHA-1 (160 bits) - deprecated for security, still used in git
- SHA-256 (256 bits) - the standard for most applications
- SHA-384 (384 bits) - truncated version of SHA-512
- SHA-512 (512 bits) - strongest, used when maximum security is needed
Use Cases
File integrity - verify downloads haven't been tampered with. Password storage - store hashes, not plaintext passwords. Digital signatures - sign documents and verify authenticity. Data deduplication - detect identical content without comparing full files.
Generate Hashes with Toolium
The Hash Generator computes SHA-1, SHA-256, SHA-384, and SHA-512 hashes in real-time as you type. All computation happens in your browser using the Web Crypto API - your data never leaves your device.
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