SHA-256 Hash Generator

Generate cryptographically secure SHA-256, SHA-512, and SHA-384 hashes online

Online SHA-256 Hash Generator

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What is SHA-256?

SHA-256 (Secure Hash Algorithm 256-bit) is a cryptographic hash function belonging to the SHA-2 family, designed by the United States National Security Agency (NSA). It transforms any arbitrary input text into a deterministic, fixed-length 64-character hexadecimal digest.

Key Security Properties

  • One-Way Function: It is computationally infeasible to invert or deduce the original plaintext from the generated hash.
  • Collision Resistance: No two distinct inputs are known to produce the same SHA-256 hash.
  • Avalanche Effect: Changing even a single character in the input completely alters the resulting hash digest.