kaleeswaran,
I'm not sure how you could have posted more than 100 times with an invalid display name, but I'm sure you know that you need one. Please take a moment to change it
before your next post, which you can do
right here.
As to your question, I don't think there is a most famous one, nor is it known (at least to me) which one people use most. Either TripleDES or AES should work fine.