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It will not. The Chinese are well aware that wind and solar power are not going to produce liquid fuels required to run vehicle fleets, and are setting up oil barter agreements with just about every oil-producing country in Africa (usually in exchange for small arms, police gear and infrastructure projects). And just in case all that goes kaput, they are also building coal-to-gasoline conversion plants at breakneck pace.
So, in this case, I'm not sure how encryption would have helped at all.