Was Convicted in the States with a Felony, Can I Enter Canada for a Visit

[sohkboi]

Here is a long story short. I was convicted of a C felony while I was in university in Indiana (which doesn't allow you to get your records expunged) for dealing 10 grams of marijuana near a school/playground and served a year in jail. and while I was serving house arrest I made a deal with the judge to let me off the rest of the probation so I could return to my home country which is Korea. So I was not deported. I left on my own. While I was in the country, I also did not have any SSN since I was on a F1.
I then have met a girl from Canada and have been dating her for over two years and she wants me to go visit her father with her who is in Canada. I would love to but I'm afraid that my conviction in the states will hold me back.
My question is, will it show up on my Korean passport? Koreans are not required to get a visa if you are visiting for under three months and you have a round trip ticket and a place to stay.
I have been clean since being in Korea and even served my two years in the military. It hasn't been five years so I can't apply for rehabilitation.
Does the record stay within the county or is there one system? I don't think it will come up on my passport but I'm afraid my fingerprints I take will get me sent back to Korea.
I personally will not be too hurt but I know that my gf and her family that is waiting will be very disappointed (and they all know I have a record so they are sort of embracing themselves).
Also, will I be able to enter the US one day? Can I just fly to Washington which is where I lived since my case is in Indiana? Is there really a net that is big enough to hold every single persons fingerprint in one search folder?

[Mr. Knowitall]

Given a felony drug conviction on your record, I am not optimistic (to put it mildly) about your ever returning to the United States. You should expect that the USCIS has your criminal record at its disposal at any port of entry.

As for what Canada will do, it's probably not much different, but you would have to inquire with a Canadian lawyer or Canadian immigration. This is a U.S. board.