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randomBytes( int )

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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

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,...
}