What are the implications of quantum-resistant encryption for the security of distributed databases, especially in light of potential future threats from quantum computing?

Investigate the field of fully homomorphic encryption (FHE) and its potential impact on data security and privacy.

Encrypting with TDEA and a single key is pointless, because it is equivalent to encrypting with the original "single" DES, which is no longer considered strong enough to resist feasible attacks. In your own words (do not quote in any way from any source), briefly explain why decrypting with TDEA and a single key was a useful operation when TDEA was developed.

What is quantum encryption, and how does it impact traditional encryption methods used in Windows and other operating systems?