#1 the backdoor secret will FAIL, as it has for every DVD, BLU-RAY, XBOX, PS3, etc... DRM device. So criminals will be able to read all encrypted (obfuscated) data.
#2 people who want to hide illegal data will.... use real encryption.
This is like banning guns. Which oddly has the opposite effect in reducing crime. I wish Lawyers and Politicizations had to pass engineering school first. I swear, passing the LSTAT doesn't seem to prove anything about ones actual logic skills.