SHA3-512 Hash Generator
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SHA3-512 is a member of the SHA-3 family, standardized by NIST in FIPS 202 (2015). Unlike SHA-1 and SHA-2, which are based on the Merkle–Damgård construction, SHA-3 is built on the Keccak sponge construction — a fundamentally different design that provides resistance against length-extension attacks and offers a strong security margin. SHA3-512 produces a 512-bit (128 hex character) digest and uses a 1600-bit internal state with 24 rounds of the Keccak-f permutation, including Theta, Rho, Pi, Chi, and Iota steps.
SHA3-512 is used in post-quantum cryptography research, blockchain protocols (Ethereum uses Keccak-256, a close relative), and high-security data integrity verification. It is the largest standard SHA-3 variant, offering 256 bits of collision resistance and 512 bits of preimage resistance.