(First of all, I would like to introduce the relationship between cryptography and information security. Cryptography is a necessary method to ensure information security. It can be said that without a password, there is no information security, so cryptography is a core of information security. Then information security must be the use of cryptography, that is, as long as security issues are mentioned, it must be based on cryptography theory, and it is not possible to talk about security without passwords, but only relying on cryptography to ensure information security is also No, there is still a need for some legislation and management schemes on security, etc., so technically, cryptography is a core technology of information security.)
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