Encryption and decryption method, device and digital program system for identification information of certificate authority card

Abstract

The invention discloses an encryption and decryption method of certificate authorization card identifying information, a device and a digital program system. A user secrete key is generated by using digital video processing device identifying information; the certificate authorization card identifying information is encrypted by the user secrete key; the obtain encrypted data are divided into arrays; the arrays are stored in numbered storage regions according to a preset sequence; in decryption, the arrays in the numbered storage regions are decrypted by the user secrete key and are combined according to an arrangement sequence; therefore the certificate authorization card identifying information is reduced. The certificate authorization card identifying information itself is encrypted; the storage regions for storing the arrays are numbered by the user respectively; the storage addresses are encrypted; therefore the safety of the certificate authorization card identifying information is greatly improved; and the encryption cost is relatively low.

Description

technical field [0001] The present application relates to the communication field, in particular to a method, device and digital program system for encrypting and decrypting identification information of a certificate authority card. Background technique [0002] With the rapid development of digital technology, most digital program content has already used digital encryption technology, but how to protect the content from being cracked has become an important issue. At present, the method often used is to encrypt the content with a special encryption algorithm, but most of the common encryption systems have been cracked at present, so the content of the operator cannot be effectively protected. To solve this problem, an advanced security encryption technology was developed, but this technology is highly complex and requires the cooperation of the main chip of the set-top box. The development and certification cycle is extremely long, and the cost of the corresponding set-to...

AI Technical Summary

Problems solved by technology

At present, the method often used is to encrypt the content with a special encryption algorithm, but most of the common encryption systems have been cracked, so the content of the operator cannot be effectively protected

In order to solve this problem, an advanced security encryption technology has been developed, but this technology is highly complex and requires the cooperation of the main chip of the set-top box. The development and certification cycle is extremely long, and the cost of the corresponding set-top box and system is greatly increased.

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