In computer science, cryptography refers to secure information and communication techniques derived from mathematical concepts and a set of rule-based calculations called algorithms, to transform messages in ways that are hard to decipher. [https://searchsecurity.techtarget.com/definition/cryptograph...]
Basically cryptography means secure plaintext replaced with it by some other thing and you should be able to make inverse replacation proccess as well (decryption) this function should be based on mathematical theories or methods.
I think you are not familiar with the cryptography concepts in general trends because today the most of data breaches become dangerous if the encrpyted part decrypts by the hackers, so that is why we should avoid typical approaches.
Also, your question about complexity, I am sorry but I can not understand. If you have an important data, you should protect it by an well-developed algorithm.
I think you are not familiar with the cryptography concepts in general trends because today the most of data breaches become dangerous if the encrpyted part decrypts by the hackers, so that is why we should avoid typical approaches.
Also, your question about complexity, I am sorry but I can not understand. If you have an important data, you should protect it by an well-developed algorithm.