Hash Generator

A hash function takes any input — text or a file — and produces a fixed-length fingerprint where even a one-byte change in the input completely changes the output. MD5 and SHA-1 are fast and fine for detecting accidental corruption (like verifying a downloaded file matches the publisher's checksum), but both have known collision weaknesses and shouldn't be relied on where an attacker could deliberately craft a matching hash.

SHA-256 and SHA-512 are the current standard for integrity verification where security actually matters — software release checksums, blockchain applications, and certificate fingerprints all use SHA-256 or stronger. One thing this tool intentionally doesn't help with is password storage: raw hashes of any algorithm here are unsuited for passwords because they're too fast to compute, making brute-forcing cheap — that use case needs a purpose-built algorithm like bcrypt or Argon2 with built-in salting and work factors.