Understanding Cryptographic Hashes: SHA-256, SHA-512 and More

What Is a Hash Function?

A cryptographic hash function takes any input and produces a fixed-size output (the hash or digest). It's a one-way function — you can't reverse it to find the original input. The same input always produces the same hash.

Common Algorithms

• SHA-256 — 256-bit output, widely used in Bitcoin and SSL certificates
• SHA-384 — 384-bit output, used in high-security applications
• SHA-512 — 512-bit output, maximum security for the SHA-2 family
• SHA-1 — 160-bit output, deprecated for security (still used for checksums)

Use Cases

Password storage, file integrity verification, digital signatures, blockchain, data deduplication, and content-addressable storage all rely on hash functions.

Generate Hashes

Use our Hash Generator to create hashes from text or files using SHA-256, SHA-384, SHA-512, and SHA-1.