What is the theoretical basis of traditional cryptography

1, the theoretical basis of traditional cryptography is mathematics. Cryptography is a technical science that studies the preparation of codes and the deciphering of codes. The study of the objective laws of cryptographic change, applied to the preparation of codes to keep the secrets of communication, is called coding.

2, Cryptography is the art and science of encryption.

3, Cryptography is a part of the overall security system, but it is also the most critical part.

4, Cryptography usually provides access control features of a system.

5, The security of every security system depends on its most vulnerable part.

6, In order to improve the security of a system, we need to improve the security of the most vulnerable parts of the system, so we must first know those that are the most vulnerable.