The Electoral College votes for each candidate have been counted. Thanks to a presidential election system that did not anticipate the growth of political parties, Republican Thomas Jefferson and his vice-presidential running mate Aaron Burr are tied for the presidency. Per the constitution, the election will now be decided in the House of Representatives. Even though everyone knows Aaron Burr was the candidate for vice-president, he refuses to concede. 

You are Alexander Hamilton. You strongly dislike Jefferson and Burr. However, you do not trust Burr with the presidency. You send letters to Federalist congressmen urging them to support Jefferson. However, the congressmen insist you send them five codes to verify that the letters are genuine and not Jeffersonian trickery. Crack the Federalist codes and decide the 1800 presidential election!