kms_decrypt_aws-sdk_nodejs

var AWS = require('aws-sdk');
AWS.config.region = 'ap-southeast-2';

var kms = new AWS.KMS({ apiVersion: '2014-11-01' }); 

var encryptedParams = { 
  CiphertextBlob: ''
};

kms.decrypt(encryptedParams, function(err, decryptedData){
  if(err){ 
    console.log(err);
  } else {

    console.log("DECRYPTED PASSWORD:", decryptedData.Plaintext.toString());
  }

});