Encryption "Challenge"

[PasswordUser]

I have a challenge for you Cryptophiliacs. My friends have encrypted some strings and given me one plaintext.
Plaintext A:15BCGU
Cipher-text A:hZ2nY7q6
There is also some more cipher-text...
Cipher-text B:hZiycsW1
Cipher-text C:iZyxarqo
Cipher-text D:ps3JhOzYrKU=
The Challenge:
Tell me the Algorithm/Encryption Method and/or the Key.
The Prize:
1TrillionBillionGazillion US Dollars. Not really, cause if I had that I would just buy a uber-quantum-computer.

[Goatboy]

And how do we know this is not just some cheap attempt to get us to crack some passes for you?

[PasswordUser]

Because I have a ethic that my parents pounded into me when I was child. They told me to respect everyone, no matter what race, colour, belief or sexuality and I stand by this ideology. I would never do anything for personal gain, or make anyone feel out of place. But than again, my parents where a bunch of hippies.
tl;dr? Summary: Y so serious?

[Goatboy]

If you're trying to get us to crack passes for you, just come out and say it. If you are trying to provide us with a challenge, message me the key so I know you are not lying.

tl;dr - y so lie?

[PasswordUser]

I lied. Sue me. Well actually don't, but I put the same thread up and a Moderator took it down and said "OK, son. Don't try any of that bullshit here. You have to disguise it as a challenge cause it does look interesting, but I'm sorry, I have to take it down cause it violates our anti-illegal rule. I am disappoint." (Something like this)
So I did. And anyways, not only is it not illegal (It may get me expelled, but they aren't going to take me to court) but also, I don't even live in whatever country you do (Unless you live in New Zealand). AND also, in New Zealand you cannot sue people, just file formal complaints that, depending on the judges decision based on the fruitlessness of the case, may or may not proceed to court.