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Encryption method suitable for multimedia transmission and service characteristics

An encryption method and multimedia technology, applied in the encryption field of multimedia transmission and service characteristics, can solve the problems of long time and increased delay in the encryption process, and achieve fast real-time performance, low requirements for hardware and software resources and energy, and good application prospects Effect

Inactive Publication Date: 2013-12-11
RES INST OF SUN YAT SEN UNIV & SHENZHEN
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AI Technical Summary

Problems solved by technology

The delay in the encryption process increases. Although a part of the data is encrypted, the process of selecting the data to be encrypted takes a long time

Method used

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  • Encryption method suitable for multimedia transmission and service characteristics
  • Encryption method suitable for multimedia transmission and service characteristics

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0025] With the acceleration of computer operation speed and the development of decryption technology, information transmission on the Internet is no longer safe. Decryptors can carry out multiple deciphering methods such as chosen plaintext attack, ciphertext only attack, known plaintext attack, and chosen ciphertext attack. In this case, the simple public (private) key encryption system can no longer meet the multimedia transmission occasions that require high spe...

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Abstract

The invention discloses an encryption method suitable for multimedia transmission and service characteristics. The method comprises the steps that encryption and multimedia coding and decoding processes are integrated, a certain proportion of data instead of all the multimedia data are encrypted, the encrypted data have great influence on multimedia decoding and carry abundant information, and thus processing loads of a system are reduced; in the encryption process, a safe random number generation function Rand () is adopted for enhancing protection, and a base layer is divided into blocks at random, so that the safety of a combination cryptosystem is enhanced; encryption algorithms are extracted from an encryption algorithm library at random through a mapping algorithm, and the encryption algorithms encrypt the base layer block by block. As a code breaker does not know which algorithm is adopted on specific information, the various encryption algorithms are combined to play a role, thus, the code breaker cannot decode, and the discreteness and safety of the encrypted information are enhanced. The encryption method has the advantages of being rapid and efficient, and has higher practicability and better application prospects.

Description

technical field [0001] The invention relates to the technical field of digital home, in particular to an encryption method suitable for multimedia transmission and service characteristics. Background technique [0002] With the development of multimedia technology, multimedia services have been applied unprecedentedly in the fields of wireless communication, Internet services, digital video and audio products, conference TV, videophone, etc. At the same time, multimedia transmission encryption and intellectual property protection have become urgent problems to be solved. However, multimedia encryption is different from traditional information encryption. The main difficulty in transmitting and storing multimedia is that the amount of data is too large, which requires a wide transmission bandwidth and large storage resources. The cost of encryption to the system and the impact on multimedia transmission performance It will also be big. For example, for portable products such...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/00H04L29/06
Inventor 刘海亮肖鹏苏航林格钟似玢
Owner RES INST OF SUN YAT SEN UNIV & SHENZHEN
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