Data encryption transmission method and system

Abstract

The invention is applicable to the field of network communication, and provides a data encryption transmission method and system. The data encryption transmission method comprises the following steps: A. a server dynamically generates a DES (data encryption standard) key based on a data encryption algorithm (DEA), and encrypts the DES key by an RSA (Rivest, Shamir and Adleman) public key which is dynamically generated by a client side so as to generate an RSA encrypted ciphertext; B. the client side decrypts the received RSA encrypted ciphertext so as to obtain the DES key; and C. a message transferred between the server and the client side is compressed according to a ZLIB algorithm, and then the DES key encrypts the compressed message. The data encryption transmission method has the beneficial effects that the RSA and DES encryption algorithms are combined together, namely the message is encrypted according to the DES algorithm and meanwhile the DES key is encrypted according to the RSA algorithm so as to integrate the advantage of fast encryption and decryption speed of the DES algorithm and the advantage of high safety of the RSA algorithm; and meanwhile the message is compressed according to the ZLIB algorithm so as to realize safe and efficient data encryption transmission.

Description

technical field [0001] The invention belongs to the field of network communication, in particular to a data encryption transmission method and system. Background technique [0002] With the rapid development of computer communication technology, more and more important information will be transmitted through the network. Therefore, how to ensure the security of communication data transmission in the network has become one of the network security issues that people focus on. , and information security technology using encryption as a means has become the core research point of network security. [0003] In the data encryption transmission technology, the RSA algorithm and the data encryption standard (DES) algorithm have been widely used. Among the above encryption algorithms, although the RSA algorithm is simple in form and strong in confidentiality, its encryption and decryption speed is relatively slow. If the RSA algorithm is used to encrypt and decrypt the entire messag...

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Problems solved by technology

[0003] In the data encryption transmission technology, the RSA algorithm and the data encryption standard (DES) algorithm have been widely used. Among the above encryption algorithms, although the RSA algorithm is simple in form and strong in confidentiality, its encryption and decryption speed is relatively slow. If the RSA algorithm is used to encrypt and decrypt the entire message, the efficiency is extremely low and cannot meet the actual needs, so it is not suitable for messages with relatively long encrypted information content; and although the DES algorithm is faster in encryption and decryption, its key distribution The process is relatively complicated, and the security of the encryption algorithm is lower than that of the RSA algorithm, so it is not suitable for messages with very important encrypted information

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