[fluffy0000]

Your evidence is sketchy at best. Japanese codes prior to and throughout WW2 were never broken by the US. Your links and sources are in error and have been corrected by other sources in open US congressional hearings held in 1945 especially US cryptologist who testified that the US never had broken any japanese code and at best wether it was a diplomatic code or IJN 'Naval code specifically AN1 -JN 25 codes did not detail any information that supports your theory.
Again 'Lend Lease Act' was passed 9 months prior to Pearl Harbor by the US congress. The US considered Germany the #1 threat not Japan. Any US effort against Japan was considered at the time by US leader as a waste.