keccak256

Keccak-256 hash (32‑byte output). Port of Go's x/crypto/sha3 (legacy Keccak variant).

Usage

1data := []byte("hello world")
2digest := keccak256.Hash(data) // [32]byte
3
4h := keccak256.NewLegacyKeccak256() // streaming
5h.Write([]byte("hello "))
6h.Write([]byte("world"))
7full := h.Sum(nil) // []byte len 32

API

1func Hash(data []byte) [32]byte
2func NewLegacyKeccak256() hash.Hash

Hash = one-shot helper. NewLegacyKeccak256 = streaming (implements hash.Hash).

Notes

• Fixed size: 32 bytes (256 bits).
• Uses legacy Keccak padding (differs from finalized SHA3-256 padding).