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Important: This documentation is about an older version. It's relevant only to the release noted, many of the features and functions have been updated or replaced. Please view the current version.

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Open source

createHash( algorithm )

Note

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.

Creates a hashing object that can then be fed with data repeatedly, and from which you can extract a hash digest whenever you want.

ParameterTypeDescription
algorithmstringThe name of the hashing algorithm you want to use. Can be any one of “md4”, “md5”, “sha1”, “sha256”, “sha384”, “sha512”, “sha512_224”, “sha512_256”, “ripemd160”.

Returns

TypeDescription
objectA Hasher object.

Example

JavaScript 
import crypto from 'k6/crypto';

export default function () {
  console.log(crypto.sha256('hello world!', 'hex'));
  const hasher = crypto.createHash('sha256');
  hasher.update('hello ');
  hasher.update('world!');
  console.log(hasher.digest('hex'));
}

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

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