"Cryptography" is two disciplines under the first-level discipline of military science "military command", which is rarely offered. The following schools offer this major: Beijing University of Posts and Telecommunications, Shanghai Jiaotong University, China People's Liberation Army Information Engineering University, PLA Foreign Languages Institute, National University of Defense Technology, Southwest Communication Research Institute (30), Southwest Jiaotong University, University of Electronic Science and Technology of China, xidian university, PLA University of Science and Technology, Naval Engineering University and Armed Police. Basically, only a fairly good school or military academy will offer cryptography major, because it is linked to the army, so if you really get into a school's cryptography, it is still quite powerful. .

As for what cryptography can do, I'll give you a link. Look, I can't understand those contents. Hehe, it's too profound. . .

/link? URL = 8 u 3 mczbq 1hC _ lwvtuwodgtn qjonh 9n 7 lb 6 yguq _ jfnccoank 0 w 1 irzobejk w4 x 9