SHA3-Keccak
SHA-3 Keccak designates the Keccak sponge instantiation parameters used by the SHA-3 standard, which differ subtly from the original Keccak submission in the padding rule.
Purpose
Standardizes Keccak's parameter choices, ensuring interoperable consistency between SHA-3 and the original Keccak proposal.
Mechanism
SHA-3 uses the Keccak[1600] sponge with capacity c=2×output length, rate r=1600−c, and padding 0x06...0x80 (original Keccak used 0x01...0x80). The permutation and round function are otherwise identical.
Use cases
- SHA-3 standard implementations
- NIST-compliant hashing
- Sponge function instantiation