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DTA Trust Management
Huanyu Trust
2025-07-08
36
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Huanyu Trust(DTA) respectively sign CPA, SPA, CAA and developer agreement with content providers, audio-visual content service providers, terminal providers and developers to balance the rights and responsibilities of all parties, achieve mutual trust among all parties in the DRM industry chain. DTA also provide the industry chain with DRM digital certificate issuance, management and authentication, to achieve trust between technical components, and strengthen the legal relationship between all parties in the ecosystem by technical means.

 Industry and Trust

With the continuous emergence of 4K/8K, AR/VR and various user audio-visual experience technology innovations, as well as the rapid development of mobile Internet, converged media and innovative terminals, the copyright management of digital media content has become increasingly important. All parties involved in China's radio, film, television, and online audio-visual industry are committed to building a favorable content publishing and consumption environment based on the ChinaDRM platform, and constructing a Chinese DRM industry system based on innovation. 

                

The ChinaDRM ecosystem mainly includes three types of participants: first, technology providers such as chip manufacturers, terminal manufacturers (CA), and solution providers; The second is the technology users, such as content providers (CP), service providers (SP), and consumers; The third is the ecosystem service provider, such as DTA (DRM Trust Authority), ChinaDRMLab, etc., which provide trust management services, assessments, technical consulting, market support and other services for the ecosystem.

The key construction of ChinaDRM industry system include: technology standards, products and solutions, industry regulation rules and cooperation models, and industry public service capabilities. The technical standard system is based on the ITU-T J.104x and GY/T standards. The industrial regulation rules are based on the "DTA agreements" framework, which includes mechanisms and solutions such as trust management, assessment, and service certification.

The distribution chain of audio-visual content runs through CP, SP, terminals, and consumers. When the security of each link is guaranteed, upstream can distribute content to downstream, ultimately achieving end-to-end content copyright protection. Each role on the content distribution chain signs a license agreement with Huanyu Trust, obtains the right to use DTA trust management services, and promises its security and compliance in business operations or product design. Huanyu Trust connects the trust relationships between participants through a cooperative agreement mechanism, avoiding the cost of signing separate agreements between participants and reducing the trust cost of ChinaDRM ecosystem.

DRM system components include DRM servers, DRM terminals, etc. To ensure secure communication between entities, identity authentication is required. Huanyu Trust has established ChinaDRM authentication mechanism based on the PKI system. After each entity undergoes security evaluation by ChinaDRM Lab, entities apply for corresponding trust certificates from Huanyu Trust. Only when the component entity has the certificate can it access the DRM system and complete its own business functions.
 
    DTA Agreements
Participants of the content distribution(such as CP, SP, CA, solution providers, etc.) who use ChinaDRM as the content distribution copyright protection scheme should contact Huanyu Trust in advance and sign the corresponding license agreement. In the agreement, Huanyu Trust and its partners have agreed on the implementation guidelines for DTA technology, as well as the responsibilities, rights, and obligations related to PKI infrastructure, key and certificate generation, management and authentication, compliance framework, etc., to jointly achieve the goal of protecting digital content from unauthorized viewing, transmission, and copying. After signing the agreement, ecosystem participants are eligible to apply for DRM server certificates and terminal device certificates.
 
According to the different role of ecological participants, the license agreement includes four categories:
1. DTA Content Participant Agreement, abbreviated as CPA, is an agreement between the content provider(CP) and Huanyu Trust. Huanyu Trust represents CP in signing cooperation agreements with CA and SP, granting CP the right to claim related cooperation agreements between CA and SP.
2. DTA Service Provider Agreement, abbreviated as SPA, is an agreement between the audio-visual content service provider SP and Huanyu Trust, and it includes a CP list.
3. DTA Client Adoptor Agreement, abbreviated as CAA, is an agreement between DRM client users (such as hardware device manufacturers, software DRM client owners) and Huanyu Trust, and it includes a CP list.
4. DTA Developer Agreement: Agreement between Solution Provider and Huanyu Trust.

 

    Trusted certificate

A certificate is a digital identity identifier based on the PKI system, used for information encryption transmission and digital signature authentication. The DRM server components and DRM clients in the ChinaDRM commercial system must undergo a security authentication process, apply for and bind digital certificates in order to securely communicate with each other.

Huanyu Trust is the only trusted institution in the ChinaDRM ecosystem, providing three types of certificate:
1. DRM server certificate, including DRM license server certificate, key management certificate, key gateway certificate, live encryption certificate, on-demand encryption certificate, used for identity identification of DRM server components.
2. DRM client certificate, used for identifying the identity of intelligent terminals or application software for the final playing and presentation of audio-visual content.
3. Test certificates, including various certificates required during the testing phase of ChinaDRM system.

 

    Cooperation Guide

The participants in the audio-visual content distribution consumption chain mainly include CP, SP, CA, solution providers, and other roles. When participants prepare to use ChinaDRM technology to protect content copyright, produce compliant terminal products, or test system compliance, they need to first sign the corresponding license agreement with DTA, become a trusted partner of the industry, and then apply for DRM server certificate or client certificate.

For business cooperation between partners and Huanyu Trust, refer to the following process:
1. Business demand communication: the industrial partners communicate with Huanyu Trust about business scenarios, demands, solutions, etc., and establish cooperation intentions.
2. Sign License Agreement: select to sign the corresponding license agreement according to business needs. If the partner's business involves multiple roles, multiple license agreements should be signed at the same time.
3. Payment of annual management fee: the partner should pay the corresponding annual management fee according to the agreement.
 
After signing the license agreement, partners can purchase DRM server certificates or client certificates as needed. Refer to the following process:
1. Place the certificate order: the partner contacts the operator of Huanyu Trust, submits the certificate order and pays the corresponding fee, and then Huanyu Trust the production certificate and delivers it to the partner.
2. Production order: If the order needs to be delivered in batches, the partner can instruct Huanyu to trust the operator to produce the corresponding number of certificates in batches and stages and deliver them to the partner.

 

    Contact

 

DTA Trust Management
Huanyu Trust
2025-07-08
36
Share on Wechat
Scan and share
Huanyu Trust(DTA) respectively sign CPA, SPA, CAA and developer agreement with content providers, audio-visual content service providers, terminal providers and developers to balance the rights and responsibilities of all parties, achieve mutual trust among all parties in the DRM industry chain. DTA also provide the industry chain with DRM digital certificate issuance, management and authentication, to achieve trust between technical components, and strengthen the legal relationship between all parties in the ecosystem by technical means.

 Industry and Trust

With the continuous emergence of 4K/8K, AR/VR and various user audio-visual experience technology innovations, as well as the rapid development of mobile Internet, converged media and innovative terminals, the copyright management of digital media content has become increasingly important. All parties involved in China's radio, film, television, and online audio-visual industry are committed to building a favorable content publishing and consumption environment based on the ChinaDRM platform, and constructing a Chinese DRM industry system based on innovation. 

                

The ChinaDRM ecosystem mainly includes three types of participants: first, technology providers such as chip manufacturers, terminal manufacturers (CA), and solution providers; The second is the technology users, such as content providers (CP), service providers (SP), and consumers; The third is the ecosystem service provider, such as DTA (DRM Trust Authority), ChinaDRMLab, etc., which provide trust management services, assessments, technical consulting, market support and other services for the ecosystem.

The key construction of ChinaDRM industry system include: technology standards, products and solutions, industry regulation rules and cooperation models, and industry public service capabilities. The technical standard system is based on the ITU-T J.104x and GY/T standards. The industrial regulation rules are based on the "DTA agreements" framework, which includes mechanisms and solutions such as trust management, assessment, and service certification.

The distribution chain of audio-visual content runs through CP, SP, terminals, and consumers. When the security of each link is guaranteed, upstream can distribute content to downstream, ultimately achieving end-to-end content copyright protection. Each role on the content distribution chain signs a license agreement with Huanyu Trust, obtains the right to use DTA trust management services, and promises its security and compliance in business operations or product design. Huanyu Trust connects the trust relationships between participants through a cooperative agreement mechanism, avoiding the cost of signing separate agreements between participants and reducing the trust cost of ChinaDRM ecosystem.

DRM system components include DRM servers, DRM terminals, etc. To ensure secure communication between entities, identity authentication is required. Huanyu Trust has established ChinaDRM authentication mechanism based on the PKI system. After each entity undergoes security evaluation by ChinaDRM Lab, entities apply for corresponding trust certificates from Huanyu Trust. Only when the component entity has the certificate can it access the DRM system and complete its own business functions.
 
    DTA Agreements
Participants of the content distribution(such as CP, SP, CA, solution providers, etc.) who use ChinaDRM as the content distribution copyright protection scheme should contact Huanyu Trust in advance and sign the corresponding license agreement. In the agreement, Huanyu Trust and its partners have agreed on the implementation guidelines for DTA technology, as well as the responsibilities, rights, and obligations related to PKI infrastructure, key and certificate generation, management and authentication, compliance framework, etc., to jointly achieve the goal of protecting digital content from unauthorized viewing, transmission, and copying. After signing the agreement, ecosystem participants are eligible to apply for DRM server certificates and terminal device certificates.
 
According to the different role of ecological participants, the license agreement includes four categories:
1. DTA Content Participant Agreement, abbreviated as CPA, is an agreement between the content provider(CP) and Huanyu Trust. Huanyu Trust represents CP in signing cooperation agreements with CA and SP, granting CP the right to claim related cooperation agreements between CA and SP.
2. DTA Service Provider Agreement, abbreviated as SPA, is an agreement between the audio-visual content service provider SP and Huanyu Trust, and it includes a CP list.
3. DTA Client Adoptor Agreement, abbreviated as CAA, is an agreement between DRM client users (such as hardware device manufacturers, software DRM client owners) and Huanyu Trust, and it includes a CP list.
4. DTA Developer Agreement: Agreement between Solution Provider and Huanyu Trust.

 

    Trusted certificate

A certificate is a digital identity identifier based on the PKI system, used for information encryption transmission and digital signature authentication. The DRM server components and DRM clients in the ChinaDRM commercial system must undergo a security authentication process, apply for and bind digital certificates in order to securely communicate with each other.

Huanyu Trust is the only trusted institution in the ChinaDRM ecosystem, providing three types of certificate:
1. DRM server certificate, including DRM license server certificate, key management certificate, key gateway certificate, live encryption certificate, on-demand encryption certificate, used for identity identification of DRM server components.
2. DRM client certificate, used for identifying the identity of intelligent terminals or application software for the final playing and presentation of audio-visual content.
3. Test certificates, including various certificates required during the testing phase of ChinaDRM system.

 

    Cooperation Guide

The participants in the audio-visual content distribution consumption chain mainly include CP, SP, CA, solution providers, and other roles. When participants prepare to use ChinaDRM technology to protect content copyright, produce compliant terminal products, or test system compliance, they need to first sign the corresponding license agreement with DTA, become a trusted partner of the industry, and then apply for DRM server certificate or client certificate.

For business cooperation between partners and Huanyu Trust, refer to the following process:
1. Business demand communication: the industrial partners communicate with Huanyu Trust about business scenarios, demands, solutions, etc., and establish cooperation intentions.
2. Sign License Agreement: select to sign the corresponding license agreement according to business needs. If the partner's business involves multiple roles, multiple license agreements should be signed at the same time.
3. Payment of annual management fee: the partner should pay the corresponding annual management fee according to the agreement.
 
After signing the license agreement, partners can purchase DRM server certificates or client certificates as needed. Refer to the following process:
1. Place the certificate order: the partner contacts the operator of Huanyu Trust, submits the certificate order and pays the corresponding fee, and then Huanyu Trust the production certificate and delivers it to the partner.
2. Production order: If the order needs to be delivered in batches, the partner can instruct Huanyu to trust the operator to produce the corresponding number of certificates in batches and stages and deliver them to the partner.

 

    Contact