Quantum Computing talk

There was an amazing talk in my university today about Quantum Computing. I really enjoyed the talk. He said something that I had never thought about it: "There is no security! Computation power is the enemy of security. We can decode any encryption by powerful computing. One can save all encrypted data at this time, and decode it ten years from now when power of computation will be 100 times greater than now!"

This is simply unbelievable. I can see a completely different world in 50 years henceforth. Sometimes I really like to write a book about my imaginations. I will do that when I fulfilled my purpose of life.