Very informative post. You explaining that from our public key we can't recover our private key because of unlimited number of probalities. All public and private key coded with crytographic code.But the Quantum computing which is very very fast and calculate unlimited number of probalities within a second . So by use of quantum computing one can got your private key. That's why latest technology used photon/ light for sending message in internate communication which is far better than crytographic encryption and unhackable if anyone want to hack it will detectable and the message is lost.
Thanks for sharing your valuable information about blockchain.