Hi , Does anyone know how to calculate "aws signature version 4" in suitescript 2.0 . I have tried this code but the signing key appears to be wrong in binary format although it matches with python example provided by aws in hex format but binary format in python is different then suitescript which makes signature different in python(correct signature ) and suitescript 2.0 (Wrong signature).

function getSignatureKey(key, dateStamp, regionName, serviceName) {
var kDate = CryptoJS.HmacSHA256(dateStamp, "AWS4" + key);
var kRegion = CryptoJS.HmacSHA256(regionName, kDate);
var kService = CryptoJS.HmacSHA256(serviceName, kRegion);
var kSigning = CryptoJS.HmacSHA256("aws4_request", kService);
return kSigning;
}

signing_key = getSignatureKey(secret_key, datestamp, region, service);

 var signingsha256Data = CryptoJS.HmacSHA256(encodeURI(string_to_sign),signing_key);

 var signature= CryptoJS.enc.Hex.stringify(signingsha256Data);

 log.debug('Calculated signature is ',signature);

crypto generally is too much work

understood . Thanks