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This article mainly introduces the relevant knowledge of the encryption process of the server hybrid password system, the content is detailed and easy to understand, the operation is simple and fast, and has a certain reference value. I believe you will gain something after reading this article about the encryption process of the server hybrid password system. Let's take a look.

Symmetric encryption can solve the problem of communication confidentiality, but it can not solve the problem of key distribution. Although the asymmetric encryption algorithm can solve the problem of key distribution, its encryption speed is relatively slow and can not resist man-in-the-middle attacks.

So if we combine the symmetric encryption algorithm with the asymmetric encryption algorithm, can we get a fast encryption system without sending keys?

The answer is yes, the famous SSL/TLS protocol is such an encryption system. Such a system is called a hybrid encryption system.

In the hybrid encryption system, we use symmetric encryption to encrypt messages and public keys to encrypt symmetric encryption keys. Generally speaking, symmetric encryption keys are generated by pseudo-random number generators.

The hybrid encryption system is composed of pseudo-random number generator, symmetric cryptography and public key cryptography.

Encrypt

The encryption process of a hybrid cryptosystem is as follows:

Use a pseudorandom number generator to generate a session key.

The session key is used to encrypt plaintext and generate ciphertext.

Encrypt the session key using the previously agreed public key.

The encrypted session key and ciphertext are merged to form the mixed ciphertext.

Decryption

The decryption process of the hybrid cryptosystem is as follows:

The receiver receives the combined ciphertext and obtains the encrypted session key and ciphertext respectively according to the convention.

The receiver uses his own private key to decrypt the encrypted session key to get the session key.

The receiver uses the session key to decrypt the ciphertext and get the plaintext.

The strength of hybrid cryptosystem

In the hybrid cryptosystem, pseudo-random number generator, symmetric encryption and public key and private key encryption are mainly used. So the strength of the hybrid cryptosystem is related to these three ways.

The pseudo-random number generator is mainly generated as random as possible, while the encryption algorithm is as strong as possible.

This is the end of the article on "what is the encryption process of the server hybrid password system". Thank you for reading! I believe you all have a certain understanding of "what is the encryption process of the server hybrid password system". If you want to learn more, you are welcome to follow the industry information channel.

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