#CJam, <s>90</s> 88 bytes

This is just a straight forward implementation. This can be golfed a lot using base conversion though..

    A,s"~`!@#$%^&*()_-+=\| qwertyuiop[]{} asdfghjkl;':\" zxcvbnm,./<>?"+S/_:eu.+qf&{},{,}$0=

[Try it online here][1]


  [1]: http://cjam.aditsu.net/#code=A%2Cs%22~%60!%40%23%24%25%5E%26*()_-%2B%3D%5C%7C%20qwertyuiop%5B%5D%7B%7D%20asdfghjkl%3B'%3A%5C%22%20zxcvbnm%2C.%2F%3C%3E%3F%22%2BS%2F