You can use it in your website easily by just copying some source codes. It has all basic security features which are required for secure communication between server & client side(browser). We used this api for our project where user's details like address etc should be encrypted before storing those details locally but due to security issues of cookies we had problems for implementing such things. At first when I tryed I think its not good but later after using actually it was very useful because it helped us a lot from encrypting the fields having sensitive information like password, email id etc. Its also very easy to implement since it doesn't require much modification work as compared to other similar APIs. They provide everything necessary along with their own SDKs. So no need to buy external libraries as well as there will be less coding part too. Security related thing can be solved only if they update their library regularly otherwise it would remain same until next major.