What is Keccak-512?

Keccak-512 is a cryptographic hash function that produces a 512-bit output. It belongs to the Keccak family— the same family behind the SHA-3 standard—but uses a different padding method that makes it faster and more efficient in advanced cryptographic systems like zk-STARKs and zk-Rollups.

What It Does

Keccak-512 takes any input—text, numbers, transactions—and transforms it into a fixed 512-bit hash that is unique, irreversible, and tamper-proof.

It’s used to compress data, verify integrity, and create cryptographic commitments without exposing sensitive information.

Key Features

  • 512-Bit Output — Provides strong collision resistance and long-term cryptographic strength.
  • ZK-Friendly Efficiency — Faster than SHA3-512 inside zero-knowledge proof systems, with smaller circuits and lower costs.
  • Quantum-Safe Design — Based entirely on hash functions—no elliptic curves or trapdoor assumptions.
  • Battle-Tested — Used in Ethereum (Keccak-256) and widely adopted in zk-Rollups and privacy tools.

Why it matters in Xcoin

Xcoin is built on a zero-knowledge foundation. That means speed, security, and privacy must scale together. Traditional hash functions like SHA-256 are too heavy for proof systems. Keccak-512 solves that with lightweight, quantum-resistant hashing optimized for zero-knowledge use.

That’s why Keccak-512 is integrated into Xcoin’s zero-knowledge stack—
ensuring every proof and transaction is fast, secure, and built to last.

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