Differences between industrial and military cryptography Industrial and military cryptography should follow the same basic rules, but what does make them different is:


Higher key length, protocols unknown to the civilian world, and perhaps unique methods of transferring media 


Are there other fundamental differences that make military encryption safer?
There’s no difference except for marketing. Neither of the terms has a meaningful technical definition on which a substantial share of experts in the field can agree.

Historically there was a difference in permissible key length due to U. S. export restrictions but those stopped a long time ago except for a few countries that are under broader embargo (e. g. North Korea, Iran, Syria).