Method and system for displaying program

Abstract

The invention relates to a method and a system for playing program, wherein the method comprises the steps that: a client side obtains an SK corresponding to a program from a server side; the server side generates a CK at random in an encryption cycle to make the CK and the encryption cycle in one-to-one correspondence; the server side divides the program in each encryption cycle into a plurality of program units, encrypts the corresponding program unit by the CK in each encryption cycle, and aligns the generated encrypted program units into an encrypted program stream; the server side encrypts each CK into a CK ciphertext by the SK; the server side sends the encrypted program stream and a corresponding ECM to the user side, wherein the ECM includes a CK ciphertext which is in the same encryption cycle of the encrypted program stream; the user side decrypts the CK ciphertext by the SK to obtain a CK plaintext; the user side decrypts each encrypted program unit with the CK plaintext and gets the plaintext of corresponding program unit, and connects the plaintext of each program unit to form a program stream and plays the program stream. By utilizing the technical scheme of the invention, the security of program transmission is improved.

Description

technical field [0001] The invention relates to the field of program playing, in particular to a method and system for playing programs. Background technique [0002] At present, Internet technology, mobile communication technology, and radio and television technology are in the ascendant. On this basis, IPTV, which uses TVs and monitors as display terminals, has gradually become the mainstream service for program broadcasting. [0003] As an industry, the server that provides IPTV video programs needs to charge certain fees from each client to survive and develop. However, IPTV uses IP networks to transmit video programs. Under the existing technology, digital programs are sent in plain text. , or it is sent to the client after simple encryption, so there will be many security risks during the transmission process. For example, criminals can easily intercept unencrypted video programs, or decipher simple programs in a short time. Encrypted video programs, in this way, crim...

AI Technical Summary

Problems solved by technology

[0003] As an industry, the server that provides IPTV video programs needs to charge certain fees from each client to survive and develop. However, IPTV uses IP networks to transmit video programs. Under the existing technology, digital programs are sent in plain text. , or it is sent to the client after simple encryption, so there will be many security risks during the transmission process. For example, criminals can easily intercept unencrypted video programs, or decipher simple programs in a short time. Encrypted video programs, in this way, criminals can easily pirate and spread the programs, thereby harming the interests of the server and affecting the healthy development of the industry

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