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Bidirectional authentication method

A two-way authentication and authentication server technology, applied in the field of digital copyright management, can solve the problems of large ciphertext diffusion and low efficiency, and achieve the effect of short ciphertext length and high encryption efficiency

Inactive Publication Date: 2009-05-13
天柏宽带网络技术(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If two-way authentication is to be achieved, two RSA cryptosystems must be used, which is obviously less efficient. Secondly, the two-way authentication using the RSA cryptosystem cannot avoid impersonation of the server or client. The RSA cryptosystem has a large diffusion of ciphertext. The length of the ciphertext requires 2 times expansion

Method used

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Embodiment Construction

[0046] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods. In the specific embodiment of the present invention, be divided into four steps:

[0047] A. The user terminal registers with the authentication server;

[0048] B. Key negotiation between the user terminal and the authentication server;

[0049] C. Two-way authentication between the user terminal and the authentication server;

[0050] D. The user terminal acquires a license for content playback.

[0051] The key agreement in step A and the key agreement in step B cannot replace each other, because the purpose of the former is for user registration, and the security requirements are not high; while the latter requires the shared secret number between the user terminal and the authentication server, and Security requirements are high, and the negotiated key is used for mutual identity authenticatio...

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Abstract

The present invention discloses a method of mutual authentication which is suitable for digital right management domain of interactive network TV. The invention comprises the following procedures: registering in an authentication server by a user terminal; executing key agreement between user terminal and authentication server; executing mutual authentication between user terminal and authentication server; obtaining license certificate for content broadcasting by user terminal. Mutual authentication is established between server of IPTVDRM and client taking advantage of high encryption efficiency of ECC and short length of cipher text by adopting the technical scheme described in the invention; obtaining session key from key protocol agreement before mutual authentication, authenticating ID of mutual parties through certificate mutually, and preventing certificate from tampering attack in transmitting process; making authentication valid and encryption and decryption efficiency higher than RSA mutual authentication by adopting mutual authentication of the certificate, and obtaining information of counterpart in plaintext by both parties for mutual confirmation without leaking plaintext simultaneously.

Description

technical field [0001] The invention relates to the technical field of digital copyright management of interactive network television, in particular to a two-way authentication method. Background technique [0002] Interactive Internet TV (IPTV) is a brand-new technology that utilizes broadband cable TV network and integrates Internet, multimedia, communication and other technologies to provide home users with a variety of interactive services including digital TV. Users can enjoy IPTV services in three ways at home: computer; set-top box + ordinary TV; mobile phone. It can well adapt to the rapid development trend of today's network and make full and effective use of network resources. IPTV is not only different from traditional analog cable TV, but also different from classic digital TV. Because both traditional and classic digital TV have the characteristics of frequency division system, timing, and one-way broadcasting, etc., which greatly limit the interaction between...

Claims

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Application Information

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IPC IPC(8): H04L9/32H04L9/08H04H60/23H04N7/16
Inventor 辛宇马兆丰陈铭武嘉赖龙生国鹏飞孙宝寅秦虎
Owner 天柏宽带网络技术(北京)有限公司
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