function deriveSigningKey()

in lib/sigv4-auth-signature.js [67:74]

• 7 lines of code
• 1 McCabe index (conditional complexity)

function deriveSigningKey(secretAccessKey, credentialDateStamp, region) {
  let secret = 'AWS4' + secretAccessKey;
  let dateHmac =  CryptoJS.HmacSHA256(credentialDateStamp, secret);
  let regionHmac = CryptoJS.HmacSHA256(region, dateHmac);
  let serviceHmac = CryptoJS.HmacSHA256(CASSANDRA_SERVICE_NAME, regionHmac);

  return  CryptoJS.HmacSHA256("aws4_request", serviceHmac);
}