My situation is somewhat similar to [this question](http://academia.stackexchange.com/questions/5997/what-to-do-with-an-accepted-phd-thesis-that-extensively-presents-quotes-as-parap?), but I'm the plagiarizer.

Six years ago I did my Master's degree by coursework at university X, and wrote the Master's thesis under supervision of well-known Prof. A. For many reasons that I don't want to list here, I plagiarized. The first part of my thesis was background, and the second part was the original contribution. 

In the background part, I copied an entire chapter from textbook T about algorithm S. Algorithm S was invented more than 50 years ago, and is described in several books, including the very well-known T. I didn't paraphrase at all, I started by citing T, and then copied the whole chapter word by word.

The contribution part is actually contribution. One year after I left the school, Prof. A found another student to extend it and published the extension with me as the second author. (The paper included the algorithm and experiment in my thesis, but I didn't write a single word of the paper.)

I have moved to university Y to do a PhD. I have published several papers in top conferences and have very good relationship with several well-known researchers. I want to advance in academia.

Will the Master's thesis destroy any possibility of a future academic career? If someone read my Master's thesis, it is very easy to recognize, since the part from the textbook is in perfect English, and the rest is in **extremely** poor English.

Can I contact the university to submit a revised Master's thesis which re-describes the algorithm S? This is the last thing I want to do.