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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

randomBytes( int )

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.

Return an ArrayBuffer object with a number of cryptographically random bytes. It will either return exactly the amount of bytes requested or will throw an exception if something went wrong.

ParameterTypeDescription
intintegerThe length of the returned ArrayBuffer.

Returns

TypeDescription
ArrayBufferAn ArrayBuffer with cryptographically random bytes.

Example

JavaScript 
import crypto from 'k6/crypto';

export default function () {
  const bytes = crypto.randomBytes(42);
  const view = new Uint8Array(bytes);
  console.log(view); // 156,71,245,191,56,...
}