How Using function CryptoJS.HmacSHA256 in Oracle Service Bus Javascript

Hi Guys,

We need to encrypt some JSon payload using CryptoJS.HmacSHA256 .

How to implement that encrypt inside OSB javascript

already try using this code, but getting error "OSB JavaScript action failed: ReferenceError: "CryptoJS" is not defined"

var hash = CryptoJS.HmacSHA256(process.body, process.ServerKey)

var signatureId = CryptoJS.enc.Base64.stringify(hash).replace(/\n+$/, '')

process.signatureId = signatureId;