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sha256( input, outputEncoding )

A module with a better and standard API exists

The new k6/experimental/webcrypto API partially implements the WebCryptoAPI, supporting more features than k6/crypto.

Use sha256 to hash input data.

inputstring / ArrayBufferThe input string or ArrayBuffer object to hash.
outputEncodingstringDescribes the type of encoding to use for the hash value. Can be "base64", "base64url", "base64rawurl", "hex" or "binary".


string / ArrayThe hash digest as string (for "base64", "base64url", "base64rawurl", "hex" outputEncoding) or raw array of integers (for "binary" outputEncoding).


import crypto from 'k6/crypto';
export default function () {
let hash = crypto.sha256('hello world!', 'hex');
const binArray = [104, 101, 108, 108, 111, 32, 119, 111, 114, 108, 100, 33];
hash = crypto.sha256(new Uint8Array(binArray).buffer, 'hex');

The above script should result in the following being printed during execution:

INFO[0000] 7509e5bda0c762d2bac7f90d758b5b2263fa01ccbc542ab5e3df163be08e6ca9
INFO[0000] 7509e5bda0c762d2bac7f90d758b5b2263fa01ccbc542ab5e3df163be08e6ca9