The background is that in the early 1990s, Phil Zimaman used the RSA asymmetric key encryption system to develop a free shareware called PGP (Excellent Privacy). People all over the world can use the encryption software to send personal private information without supervision! The US National Security Agency sued Zimaman and requested that the software be shut down on the grounds of harming national interests! The public in the United States and the people of other countries started a five-year controversy over the contradiction between personal privacy protection and US national security. In the end, the US National Security Agency withdrew the case against Zimaman, and the PGP software survived. Come down. At the same time, the RSA asymmetric key encryption method and the strong encryption system for digital signatures are rapidly spreading all over the world! The current Alipay, online banking personal payment system and Bitcoin also apply this asymmetric encryption system! "Ultimate Code War" is about a 9-year-old child with autism who accidentally unlocked a new code. The National Security Agency thought he threatened national security and sent someone to assassinate him. As a result, the hero played by Bruce Willis saved the child. In addition to "Ultimate Crypto War", there is also "The Enemy of the People", which was also assassinated by the National Security Agency because a politician supported the people to strengthen the cryptographic system.
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