This is an implementation of Keccak 256 the hash function used in Ethereum as well as the final version of the Sha3 as published by NIST.

It is a wrapper around an older version of the keccak-tiny library.

Important Ethereum uses the original version of Sha3 which we use here as it's original name "keccak". The final published version of Sha3 had a few minor changes to it, but produce as you would expect different results. In this library we refer to that as "sha3Final".

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github "uport-project/SwiftKeccak"

You can use the keccak256() function with both Data and String inputs.

import SwiftKeccak

let hash: Data = keccak256("hello")

You can also use the sha3Final256() function with both Data and String inputs for the final version of sha3 (see explanation above).

import SwiftKeccak

let hash: Data = sha3Final256("hello")

We also include a handy extension for both Data and String allowing you to call keccak() and sha3final() on them.

import SwiftKeccak

let hash: Data = "hello".keccak()
let hash: Data = "hello".sha3Final()