KR102428571B1 - System and method of issuing credential for protocol-based copyright transaction - Google Patents

Abstract

Disclosed is a technology for a system for issuing a credential for a protocol-based copyright transaction. An authorization credential is issued between an authorizer device and a broker device as a delegated person, and a credential of consent to use is issued between the broker device and a copyright user device. The present invention can obviously mange copyright by issuing a credential only when meeting copyright policy using a message transmission protocol so that the broker can grant permission to the user within authority delegated by a copyright holder.

Description

System and method of issuing credential for protocol-based copyright transaction}

A service using a network and computing technology, in particular, a technology related to a system for issuing credentials in a copyright transaction based on a protocol is disclosed.

Recently, with the development of IT information and communication technology, digital contents are easily produced and supplied through various channels. To protect such works, various DRM systems using encryption technology have been developed and utilized.

For a variety of works that are being supplied by numerous authors, it is inefficient for copyright users to directly contract with the copyright holder. In order to improve this point, copyright consignment management agencies and various copyright brokerage platforms allow copyright users to conveniently use works.

When these consignment management agencies and intermediary platforms contract with copyright users based on the authority delegated by the copyright holder, a clearer copyright contract can be made if the contract is developed and utilized in accordance with the copyright policy.

Registered Patent No. 10-1537801, published on July 30, 2015, relates to a copyright management device and method using an online open market. and an apparatus and method for selling and managing digital content in an open market format in the form of directly setting and selling prices.

Patent Publication No. 10-2021-0032136, published on March 24, 2021, relates to a method of providing a copyright management service for reconciling the relationship between copyright holders and users, and is a method for using at least one type of copyright with the copyright holder. It discloses a platform that concludes and manages license agreements between users.

However, it does not disclose the copyright brokerage and transaction related to the copyright entrustment management system and authority delegation.

The proposed invention aims to provide a protocol-based copyright transaction credential issuance system and method in which an intermediary device delegated from the delegator device issues a copyright consent credential only within the limit delegated to the copyright user device.

Furthermore, the proposed invention aims to provide a protocol-based copyright transaction credential issuance system and method in which copyright authorization is clearly managed by issuing copyright authorization credentials through message transmission between the delegating device and the delegated device. .

According to an aspect of the proposed invention, a method for issuing a copyright transaction credential is performed in a protocol-based copyright transaction credential issuance system including a delegator device and an intermediary device serving as a delegate.

According to a further aspect, the method for issuing copyright transaction credentials performed by the intermediary device is a proof of a copyright delegation credential manifest and a delegatee-present transaction proof requirement. Sending a credential offer (offer-credential) message including a presentation submission including information and a delegator-present transaction proof requirement for delegator verification to the delegator device ; Receiving a credential request (request-credential) message including a submission material including a copyright delegation credential specification identifier and proof information for a request for proof of transaction presented by the delegator from the delegator device; performing verification on the submitted data including proof information for the transaction proof requirements presented by the delegator; If the verification is successful, generating a copyright authorization credential (CRCD verifiable credential); and transmitting a credential issue (issue-credential) message including the processing result of the credential request message to the delegator device.

According to a further aspect, the method further comprises: receiving from a delegator device a credential-credential message comprising a copyright delegation credential specification and a delegate-presented transaction proof requirement for delegate verification; verifying the contents of the copyright delegation credential specification; and generating a submission material including proof information for the transaction proof requirement presented by the trustee.

According to an additional aspect, in the credential issuance message, when a method of processing copyright delegation credential to deliver the copyright delegation credential to the delegator is included in the credential request message, the copyright delegation credential is further added include

According to a further aspect, the Copyright Authorization Credential Specification includes identifier information for the subject work, the various permissions it provides to copyright users for use of the work, and the obligations that must be fulfilled for use under this permission. Includes a right policy.

According to a further aspect, the copyright delegation credential specification includes a transaction proof requirement for a copyright user (CRU-duty transaction proof requirement), a transaction proof requirement for an intermediary (CRXM-duty transaction proof requirement), and a copyright Include any one of the proof-of-use requirements for users (CRU-duty usage proof requirements).

According to a further aspect, the mandate presented transaction proof requirement includes a transaction proof requirement for an intermediary included in the delegate's copyright delegation credential specification, if the delegate has been delegated by a higher delegate.

According to another aspect of the proposed invention, the method for issuing a copyright transaction credential performed by the delegator device comprises: a submission material including proof information for a copyright delegation credential specification, a requirement for a transaction proof presented by the delegate, and verification of the delegator; Receiving a credential proposal message including a delegator presented transaction proof requirement for the intermediary device; performing verification on the submitted data including proof information for the copyright delegation credential specification and the transaction proof requirement presented by the person in charge; generating submission materials including proof information for the transaction proof requirements presented by the delegate; The intermediary sends a credential request message that includes a copyright delegation credential specification identifier, a submission containing proof information for the delegated transaction proof requirements, and how to process the copyright delegation credential and the copyright delegation credential specification. transmitting to the device; and receiving a credential issuance message including a processing result of the credential request message from an intermediary device.

According to a further aspect, the method comprises generating a copyright delegation credential specification; and transmitting a credential offer message including a copyright delegation credential specification and a request for proof of transaction presented by a person for verification of the authority to the intermediary device.

According to another aspect of the proposed invention, a copyright transaction credential issuance method is performed in a protocol-based copyright transaction credential issuance system including a copyright user device, a work manager device, and an intermediary device.

According to a further aspect, the method for issuing copyright transaction credentials performed by the intermediary device includes: receiving a credential offer message including a copyright delegation credential specification identifier from a copyright user device; checking whether a copyright delegation credential specification corresponding to the copyright delegation credential specification identifier exists; If the Copyright Delegation Credential Specification exists, if the credential offer message contains submissions to the requirements for proof of transactions for copyright users, the submissions are copyrighted in the Copyright Authorization Credential Specification. a user submission data verification step of confirming that the transaction verification requirements for the user are satisfied; When the copyright delegation credential specification exists, if the credential offer message includes a transaction proof requirement for the intermediary, create an intermediary submission that generates a submission for the transaction proof requirement for the intermediary step; When verification fails in the verification step of the user submission data, the transaction proof requirement for the copyright user in the copyright delegation credential specification is included, and when the transaction proof requirement for the intermediary is generated in the intermediary submission data generation step, the above sending a credential proposal message to the copyright user device, the credential proposal message including the generated submission for the transaction proof requirement for the intermediary and including the copyright delegation credential specification identifier; Receiving a credential request message including a copyright delegation credential specification identifier from a copyright user device; when the credential request message includes data to be submitted for a transaction proof requirement for a copyright user, checking whether the submitted data satisfies a transaction proof requirement for a copyright user; generating a CRA verifiable credential including an intermediary's digital signature when the submitted data satisfies a transaction proof requirement for a copyright user; and transmitting, to the copyright user device, a credential issuance message including the copyright use agreement credential and the processing result of the credential request message when the copyright use agreement credential is generated.

According to a further aspect, the method comprises: receiving a request for a copyright delegation credential specification from a copyright user device; and transmitting the copyright delegation credential specification to the copyright user device.

According to an additional aspect, the method, if the processing method for the copyright agreement credential to be issued is included in the credential request message, storing the generated copyright usage agreement credential according to the processing method; further include

According to another aspect of the proposed invention, the copyright transaction credential issuance method performed by the copyright user device includes: transmitting a credential offer message including a copyright delegation credential specification identifier to the intermediary device; Receiving a credential proposal message including a copyright delegation credential specification identifier from an intermediary device; identifying a copyright delegation credential specification identifier; verifying the submitted data received from the intermediary terminal according to the transaction proof requirement for the intermediary when the credential proposal message includes the submitted data generated for the transaction proof requirement for the intermediary; when the credential proposal message includes a request for proof of transaction for a copyright user, generating submission data for a request for proof of transaction for a copyright user; When the credential proposal message includes a request for proof of transaction for a copyright user, a credential request message including the submission material generated for the request for proof of transaction for a copyright user and including an identifier of a copyright delegation credential specification transmitting to the intermediary device; and receiving, from the intermediary device, a credential issuance message including the copyright use agreement credential and the processing result of the credential request message when the credential of the copyright use agreement is generated in the intermediary device.

According to a further aspect, the method comprises: sending a request for a copyright delegation credential specification to an intermediary device; receiving a copyright delegation credential specification from an intermediary device; checking the contents of the copyright delegation credential specification; And if there is a transaction proof requirement for the copyright user in the copyright delegation credential specification, generating a submission data for the transaction proof requirement for the copyright user; further includes.

According to a further aspect, the method includes: transmitting a request for location information of an intermediary device that manages a copyright delegation credential specification related to a work to obtain a copyright use agreement to a work manager device that manages the work; and receiving from the works manager device for the location information of the intermediary device.

According to another aspect of the proposed invention, in a protocol-based copyright transaction credential issuance system including a delegator device and an intermediary device that is a delegate, the intermediary device that issues the copyright delegation credential is: A credential offer message that includes a requirement for proof of a delegate-presented transaction for credential specification and delegate validation, or a delegated submission containing a copyright delegation credential specification identifier and proof of the delegate-presented transaction proof requirement. a message receiving unit for receiving a credential request message; a credential specification verification unit for verifying the contents of the copyright delegation credential specification; a trustee submission data generation unit for generating trustee submission data including proof information for the trustee-presented transaction proof requirement; an authority delegation credential generating unit that performs verification on the data submitted by the delegator and generates a copyright delegation credential when the verification of the data submitted by the delegator is successful; and to the delegator device, a credential proposal message including a copyright delegation credential specification, the data submitted by the delegate, and a request for proof of transaction to be presented by the delegate for verification of the delegate, or a credential issuance including the processing result of the credential request message and a message transmitter for transmitting a message.

According to another aspect of the proposed invention, in the protocol-based copyright transaction credential issuance system including the copyright user device and the intermediary device, the intermediary device issuing the copyright consent credential is: a message receiving unit for receiving a credential offer message including a credential specification identifier, or a credential request message including a copyright authorization credential specification identifier; a credential specification confirmation unit for confirming whether a copyright authorization credential specification corresponding to the copyright authorization credential specification identifier exists; When the credential offer message includes a transaction proof requirement for an intermediary, an intermediary submission data generation unit for generating intermediary submission data for the transaction proof requirement for the intermediary; Intermediary if the user submission of the transaction proof requirement for the copyright user included in the above credential offer message or credential request message satisfies the transaction proof requirement for the copyright user in the Copyright Delegation Credential Specification Credential generating unit for consent to create a copyright consent credential including the digital signature of the user; a user consent credential storage unit for storing the generated copyright use consent credentials; and a message transmitting unit for transmitting, to the copyright user device, a credential proposal message including a copyright delegation credential specification identifier, or a credential issuance message including a processing result of the credential request message.

According to the proposed invention, since the intermediary device delegated from the delegator device issues the copyright consent credential only within the limit delegated to the copyright user device, it is possible to prevent the use agreement that goes beyond the delegated authority.

Furthermore, since the proposed invention confirms the copyright policy through message exchange between the delegating device and the delegating device, it is possible to provide a protocol-based copyright transaction credential issuance system and method that can clarify the copyright delegation process.

1 is a configuration diagram schematically showing the configuration of a protocol-based copyright transaction credential issuance system according to an embodiment.
2 is a flowchart illustrating a method for issuing copyright authorization credentials between a delegator device and an intermediary device in a protocol-based copyright transaction credential issuance system according to an embodiment.
3 is a flowchart illustrating a method of issuing a copyright agreement credential between an intermediary device, a copyright user device, and a work manager device in a protocol-based copyright transaction credential issuance system according to an embodiment.
4 is a flowchart illustrating a method of issuing a copyright agreement credential between an intermediary device and a copyright user device in a protocol-based copyright transaction credential issuance system according to an embodiment.
5 is a configuration diagram illustrating the configuration of an intermediary device that issues a copyright authorization credential in a protocol-based copyright transaction credential issuing system according to an embodiment.
6 is a block diagram illustrating the configuration of an intermediary device that issues a copyright use agreement credential in a protocol-based copyright transaction credential issuance system according to an embodiment.

The foregoing and additional aspects are embodied through the embodiments described with reference to the accompanying drawings. It is understood that various combinations of elements of each embodiment are possible within one embodiment or with elements of other embodiments as long as there is no other mention or contradiction between them. Based on the principle that the inventor can appropriately define the concept of a term in order to best describe his invention, the terms used in the present specification and claims shall have meanings consistent with the description or the proposed technical idea. and should be interpreted as a concept. In the present specification, a module, a part, a device, an apparatus, a terminal, or a server is a storage medium such as a memory, HDD, or SSD for storing a set of program instructions executable in a computer or processor, and a microprocessor capable of executing these instructions , ASIC, FPGA, etc. or a set of circuits including them can be implemented. In addition, the operation of each module, part, device, device, terminal, or server may be performed by one or more processors or devices, and two or more modules, parts, or servers may be implemented as one processor or device.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram schematically showing the configuration of a protocol-based copyright transaction credential issuance system according to an embodiment.

The protocol-based copyright transaction credential issuance system according to an embodiment includes a delegator device 110 , an intermediary device 130 , and a copyright user device 150 . These devices are implemented as terminals, servers, etc., and are respectively connected through a network communication network.

The delegator is the copyright holder, the representative of the copyright holder, and the person entrusted with the copyright holder, the intermediary is the person who is entrusted with the entrusted management and agency authority of the copyright by the delegator, and the copyright user is the person who uses the copyright with the consent of the intermediary to use the copyright. In the present specification, the delegate, the intermediary, and the copyright user refer to the delegate device 110 , the mediator device 130 , and the copyright user device 150 , respectively, unless otherwise specified.

The copyright-related credential issuance protocol (Issue credential protocol) includes a copyright authorization credential issuance protocol (Issue CRCD credential protocol) and a copyright use agreement credential issuance protocol (Issue CRA credential protocol).

Copyright Delegation Credential Issuance Protocol (Issue CRCD credential protocol) is between the copyright holder device (CRH) 110 and the intermediary device (CRXM) 130 or between the intermediary device (CRXM) 110 and the other intermediary device (CRXM) 130 ) is a protocol that generates CRCD verifiable credential (CopyRight Capability Delegation verifiable credential).

The Copyright Use Agreement Credential Issuance Protocol (Issue CRA credential protocol) generates a copyright agreement credential (CRA verifiable credential; CopyRight Agreement verifiable credential) between the copyright user device (CRU) 150 and the intermediary device (CRXM) 130 . do.

The delegator device 110 includes a copyright holder terminal (CRH; CopyRight Holder), or an author's agent terminal. The copyright holder and the like may set the claim of ownership for the work, the use of the work and the transaction policy, etc. through the delegator device 110 .

The intermediary device (CRXM) 110, which is the delegator device 110, receives the capability delegation by the copyright consignment management for the work (CRW) from the copyright holder device (CRH), and then based on this, the other delegatee (delegatee) Authority may be delegated to the intermediary device (CRXM) 130 . At this time, the authority may be delegated to another intermediary device (CRXM) 130 within the range allowed by the copyright holder device (CRH).

The copyright user equipment (CRU) 150 requests permission to use the copyright to the intermediary equipment (CRXM) 130 and receives a response. In terms of roles, the CRU can be the device of the end user who uses the work, or it can be the device of the person who distributes the work to other end users with permission from the copyright holder (eg, a music streaming service provider, etc.).

The delegate device, the intermediary device (CRXM) 130, is between the delegate device (CRH or CRXM) 110 and the copyright user device (CRU) 150 for permission to use the copyright for the work (CRW) according to the delegated authority delegation. It is a system that brokers copyright transactions.

A copyright delegation credential (CRCD verifiable credential) is a credential that provides delegation of authority for a copyright transaction issued from a delegating machine (CRH/CRXM) to a delegating machine (CRXM). This delegation of authority includes one or more of the rights policies being delegated.

The copyright policy includes the ability of the CRXM to grant the copyright users (CRU) permission to use the copyright of the author's property (e.g., the author's right and moral right as defined in the Copyright Act, such as the right to reproduce, the right to perform, the right to publicly transmit, and the right to display) do. To this end, the copyright policy includes identifier information for the target work (CRW), various permissions provided to the CRU for use of this work, and duties that must be fulfilled for use according to this permission. Examples of permission include the types of author's right and moral right as defined in the Copyright Act, such as the right to reproduce, the right to perform, the right to publicly transmit, and the right to display. Examples of obligations may include restrictions on the period for which permission is granted, the environment in which the act is performed (size of the performance space, free audience, PC/mobile environment, target area restrictions, etc.), and the amount of compensation.

The copyright policy may also include a copyright policy that allows the delegate device, CRXM, to act as a delegate device to delegate authority to other intermediary devices (CRXM).

The CRA verifiable credential is based on the copyright policy included in the copyright delegation credential managed by the intermediary device (CRXM). Credentials for the Copyright Agreement, a copyright licensing agreement. The intermediary device (CRXM) finally generates the credential of the copyright use agreement and transmits it to the copyright user device (CRU).

The credential of the copyright agreement is different from the DRM License issued to the receiver (DRM Client) by the DRM server that provides the content protection technology in general. The DRM server is a copyright user device (CRU) that has been issued a copyright agreement credential, and can issue a DRM license based on the contents of the right agreement.

The delegator device (CRH) and the copyright user device (CRU) can use the CRH Agent and CRU Agent implemented systematically or programmatically for interworking with the intermediary device (CRXM). CRH Agent and CRU Agent may be implemented in various forms, such as web pages, mobile apps, and program libraries, and provided to the copyright holder or delegated device (CRH) and the copyright user device (CRU). In this document, the delegation device 110 and the copyright user device 150 interworking with the intermediary device 130 means interworking with the intermediary device (CRXM) through the CRH Agent and the CRU Agent.

2 is a flowchart illustrating a method for issuing copyright authorization credentials between a delegator device and an intermediary device in a protocol-based copyright transaction credential issuance system according to an embodiment.

According to an aspect of the proposed invention, a method for issuing copyright transaction credentials is performed in a protocol-based copyright transaction credential issuance system including a delegator device 110 and an intermediary device 130 that is a delegate.

According to an additional aspect, the copyright transaction credential issuance method performed by the intermediary device 130 in the copyright transaction credential issuance system is, Presentation submission including proof information for the -present transaction proof requirement, and credential offer including the delegator-present transaction proof requirement for delegator verification. credential) transmitting a message to the delegator device (S260); Receiving a credential request (request-credential) message including a submission material including proof information for a copyright delegation credential specification identifier and a request for proof of transaction presented by the delegator from the delegator device (S280); performing verification on the submitted data including proof information for the transaction proof requirement presented by the delegator (S290); If the verification is successful, generating a copyright authorization credential (S295); and transmitting a credential issue (issue-credential) message including the processing result of the credential request message to the delegator device (S299).

According to a further aspect, the method includes: receiving, from a delegator device, a credential offer (propose-credential) message including a copyright delegation credential specification and a transaction proof requirement presented by a principal for verification of the principal (S240); verifying the contents of the copyright delegation credential specification (S250); and generating (S255) submission data including proof information for the request for proof of transaction presented by the principal (S255).

According to an additional aspect, in the credential issuance message, when a method of processing copyright delegation credential to deliver the copyright delegation credential to the delegator is included in the credential request message, the copyright delegation credential is further added include

According to a further aspect, the Copyright Authorization Credential Specification includes identifier information for the subject work, the various permissions it provides to copyright users for use of the work, and the obligations that must be fulfilled for use under this permission. includes a copyright policy.

According to a further aspect, the copyright delegation credential specification includes a transaction proof requirement for a copyright user (CRU-duty transaction proof requirement), a transaction proof requirement for an intermediary (CRXM-duty transaction proof requirement), and a copyright Include any one of the proof-of-use requirements for users (CRU-duty usage proof requirements).

According to a further aspect, the mandate presented transaction proof requirement includes a transaction proof requirement for an intermediary included in the delegate's copyright delegation credential specification, if the delegate has been delegated by a higher delegate.

According to another aspect of the proposed invention, the method of issuing a copyright transaction credential performed by the delegator device 110 includes a submission material including proof information for a copyright delegation credential specification and a transaction proof requirement presented by the delegator; Receiving a credential proposal message including a delegator-suggested transaction proof requirement for delegator verification (S260); performing verification on the copyright delegation credential specification (S270), and performing verification on the submitted data including verification information for the transaction verification requirement presented by the trustee (S275); generating submission data including proof information for the transaction proof requirement presented by the delegator (S277); The intermediary sends a credential request message that includes a copyright delegation credential specification identifier, a submission containing proof information for the delegated transaction proof requirements, and how to process the copyright delegation credential and the copyright delegation credential specification. transmitting to the device (S280); and receiving the credential issuance message including the processing result of the credential request message from the intermediary device (S299).

According to a further aspect, the method comprises the steps of: generating a copyright delegation credential specification (S230); and transmitting a credential offer message including a copyright delegation credential specification and a request for proof of transaction presented by a person for verification of the authority ( S240 ) to the intermediary device.

The procedure of the Issue CRCD credential protocol for generating the CRCD verifiable credential is as follows.

CRH/CRXM, which is the delegator device 110, provides the delegation of authority for the copyright transaction for the work (CRW) to the CRXM, the intermediary device 130, which is the delegatee, and finally, the copyright delegation credential (CRCD). I want to be issued a verifiable credential).

Copyright Delegation Credential Issuance Protocol is based on Message-passing Protocol, (1) credential proposal message (CRH/CRXM -> CRXM), (2) credential proposal ( offer-credential) message (CRH/CRXM <- CRXM), (3) credential request (request-credential) message (CRH/CRXM -> CRXM), (4) credential issue (issue-credential) message (CRH/ CRXM <- CRXM).

The copyright delegation credential issuance protocol may start with the delivery of a credential offer (propose-credential) message or a credential offer (offer-credential) message.

The CRH/CRXM, which is the delegator device 110, creates a copyright delegation credential manifest including a copyright policy to delegate authority for a copyright transaction of a work (CRW) (S230).

The copyright delegation credential manifest includes one or more rights policies written based on ODRL (Open Digital Rights Language). and optionally, a CRU-duty transaction proof requirement for a copyright user, a CRXM-duty transaction proof requirement for an intermediary, and a CRU-duty usage proof requirement for a copyright user. requirements) may be included.

The copyright policy is based on (1) the ability of CRXM, the delegatedee, to grant permission to copyright users (CRU) to use copyrights (eg, copyright and moral rights as defined in the Copyright Act, such as the right to copy, the right to perform, the right to publicly transmit, and the right to display). (2) The policy on the ability of the delegated CRXM to delegate authority to other CRXMs by acting as a delegator may be included. Either one or both may exist.

The CRU-duty transaction proof requirement for the copyright user is a proof requirement that the CRXM, the assignee, must request from the CRU when transacting a copyright license agreement with the CRU in the future. This certification requirement can be optionally included if necessary.

When CRXM issues the copyright agreement credential to the CRU, the CRU must verify the proof of this certification requirement. Examples of such verification requirements may include verifying that the CRU is a service provider for educational purposes, verifying that payment for content use has been made normally in recent months, and the like.

The transaction proof requirement for the intermediary is a proof requirement that the delegate CRXM must request from the other delegate CRXM when providing delegation of authority to the other delegate CRXM through the delegate role. This certification requirement can be optionally included if necessary.

When CRXM, which used to be the mandator, changes to the role of delegator, and delegates authority to CRXM, which is another mandator, it is necessary to verify this attestation requirement against CRXM, which is another importer. An example of such a certification requirement would be to verify that CRXM, the mandated person, is a certified copyright broker for musical works.

The proof of use requirement for copyright users is the proof required for the CRU when the CRU uses the work (CRW) by the copyright license (when the CRU directly uses the work or when the CRU provides the work use service to other users) is a requirement An example of such a requirement for proof would be to verify that the user of the final work is a student who is eligible for free for educational purposes.

Depending on the type of work, the content of the CRU-duty usage proof requirement may be statically fixed or dynamically changed. If it is statically fixed, the content of the CRU-duty usage proof requirement can be directly embedded in the copyright delegation credential specification. In the case of dynamic change (for example, in the case of live broadcasting, the content of claims required for users of the final work may be different for paid programs and free programs, respectively.) Only URI information that can refer to attestation requirements is included.

CRH/CRXM, the delegator, can selectively deliver the transaction proof requirement for the delegate presented to CRXM, the delegate who issues the copyright delegation credential. An example of such a certification requirement may include verifying that the trustee, CRXM, is a certified copyright trustee (or copyright broker) for musical works.

If the delegation of authority to be achieved through this copyright delegation credential issuance protocol is based on the parent delegation, the transaction proof requirement for the intermediary in the parent authority delegation must be included in this delegate-presented transaction proof requirement. The delegator, CRH/CRXM, may include additional necessary proof requirements in this delegate-supplied transaction proof requirement in addition to the transaction proof requirements for the intermediary in the parent authority delegation.

The delegator device 110, CRH / CRXM, transmits a credential offer (propose-credential) message including the generated copyright delegation credential specification and the trustee presented transaction proof requirement to the CRXM, which is the intermediary device 130 ( S240), the copyright authorization credential issuance protocol can be started.

If the delegator device 110, CRH/CRXM, does not start delegating authority, but the intermediary device 130, CRXM, starts with a request to delegate authority to the delegator device 110, CRH/CRXM. By transmitting a credential proposal (offer-credential) message to the CRH/CRXM, which is the delegator device 110, the CRXM 130 (S260) starts the copyright delegation credential issuance protocol. In this case, the CRXM, which is the intermediary device 130 requesting delegation, must know in advance the target copyright delegation credential specification and the transaction proof requirement presented by the person through the inquiry method.

The CRXM, which is the intermediary device 130, verifies the CRCD credential manifest included in the received credential proposal message (S250).

Some examples of validating the Copyright Delegation Credential Specification include whether the work (CRW) the copyright policy targets actually exists, the grammar check of the copyright policy (conforming to the ODRL schema), and the various attestation requirements requested by potential CRUs or CRXMs. There is such a thing as checking whether the content is verifiable by CRXM, the person responsible for it. As another verification example, in the case of a joint work, it is possible to verify the distributed identifiers (DIDs) of all co-authors and check whether the digital signatures of all co-authors are included in the content of delegation of authority. As another verification example, through chain verification for authority delegation, it can be checked whether this authority delegation was created based on the Ancestor authority delegation chain.

The CRXM, which is the intermediary device 130, generates a submission data including proof information for the case that the credential proposal (proposal-credential) message includes a request for proof of the transaction presented by the person (S255).

The CRXM, which is the intermediary device 130, has verified the copyright delegation credential specification, the submission data generated for the delegated transaction proof requirement, and the delegated transaction proof requirement required for the CRH/CRXM, which is the delegator device 110 (Delegator). -Provides a credential proposal (offer-credential) message including a present transaction proof requirement to the CRH/CRXM, which is the delegator device 110 (S260).

If necessary, the CRXM as the intermediary device 130 may provide the CRH/CRXM as the delegating device 110 after modifying the copyright delegation credential specification provided by the CRH/CRXM as the delegating device 110 .

The delegator-suggested transaction proof requirement is a proof requirement for CRH/CRXM, which is a delegator device, and is defined by CRXM, which is the intermediary device 130 . An example of such a proof requirement may include confirmation that the CRH is the owner of the work (CRW), whether the CRXM possesses the parent authority delegation to create a CRCD, and the like.

The CRH/CRXM, which is the delegator device 110 receiving the credential proposal message, verifies the copyright delegation credential specification (S270), and the submitted data generated for the delegatee-present transaction proof requirement (Delegatee-present transaction proof requirement) is verified (S275). And the submission data including the proof information for the transaction proof requirement presented by the delegator is generated (S277). And CRH / CRXM, which is the delegator device 110, sends a credential request (request-credential) message including the submission data for the delegator presented transaction proof requirement and the copyright delegation credential specification identifier to the CRXM, which is the intermediary device 130 . It transmits a request to issue a copyright authorization credential (S280).

Optionally, the credential request message includes the copyright delegation credential to be issued and the processing method for the copyright delegation credential specification (e.g., CRXM database storage, storage through blockchain DLT (Distributed Ledger Technology), and return of the copyright authorization credential) , the return of the copyright delegation credential specification, restrictions on the provision of copyright delegation credential specification information, etc.) can be specified.

CRXM, which is the intermediary device 130 receiving the credential request message, checks whether the submitted data provided by the CRH/CRXM, which is the delegator device 110, satisfies the delegate-present transaction proof requirement (Delegator-present transaction proof requirement) ( S290). If the verification is successful, a copyright delegation credential including the digital signature of CRXM, the trustee, is generated (S295). And according to the processing method requested by the delegator CRH/CRXM, the copyright authorization credential and the copyright authorization credential specification are stored. This storage may be stored in a database within the CRXM, which is the intermediary device 130 , or may be stored through blockchain DLT (Distributed Ledger Technology) that can be securely shared with the CRXM, which is another intermediary device.

For reference, the copyright delegation credential is a credential, and the copyright delegation credential specification contains the contents of delegation and is used to provide information on the copyright policy and certification requirements to the CRU or CRXM in the future.

The CRXM, which is the intermediary device 130, transmits an issue-credential message including the copyright authorization credential together with the processing result value (success/failure) to the CRH/CRXM, which is the delegator device 110 (S299). ).

Depending on the processing method included in the credential request (request-credential) message, the copyright delegation credential may not be delivered to the CRH/CRXM, which is the delegator device 110 .

3 is a flowchart illustrating a method of issuing a copyright agreement credential between an intermediary device, a copyright user device, and a work manager device in a protocol-based copyright transaction credential issuance system according to an embodiment.

According to another aspect of the proposed invention, a copyright transaction credential issuance method in a protocol-based copyright transaction credential issuance system including a copyright user device 150 , a work manager device 170 , and an intermediary device 130 . This is done.

According to an additional aspect, the method of issuing copyright transaction credentials performed by the copyright user device of the system sends a request for the location information of the intermediary device that manages the copyright delegation credential specification related to the work to obtain the copyright use agreement. transmitting to the managed works manager device (S410); and receiving from the works manager device for the location information of the intermediary device (S415); further comprising.

According to a further aspect, the method includes: sending a request for a copyright delegation credential specification to an intermediary device (S420); Receiving the copyright authorization credential specification from the intermediary device (S425); checking the contents of the copyright delegation credential specification (S430); And if there is a transaction proof requirement for the copyright user in the copyright delegation credential specification, generating a submission data for the transaction proof requirement for the copyright user (S435); further includes. Thereafter, a step (S440) of transmitting a credential proposal (propose-credential) message to the intermediary device is performed.

The procedure of the Issue CRA credential protocol for the issuance of the CRA verifiable credential of the copyright agreement is as follows.

The copyright user device (CRU) 150 wants to be issued a copyright use agreement credential (CRA verifiable credential) to obtain a copyright use permission for the work (CRW) from the intermediary device (CRXM) 130 .

Credential issuance protocol for copyright agreement is based on Message-passing Protocol, (1) credential proposal message (CRU -> CRXM), (2) credential offer (offer-) credential) message (CRU <- CRXM), (3) credential request (request-credential) message (CRU -> CRXM), (4) credential issue (issue-credential) message (CRU <- CRXM) consists of . The Credential Issuance Protocol of the Copyright Use Agreement starts with the delivery of a credential proposal (propose-credential) message (S440).

The copyright user device 150 includes a copyright policy in the CRCD credential manifest for a work to be transacted (CRW) through the intermediary device (CRXM) 130 and various proof requirements. Requests for a copyright entrustment credential specification inquiry including the (Proof requirements) to the intermediary device 130 (S420) and receives a response to this (S425).

The copyright user device 150 requests the location information of the intermediary device 130 through interworking with the work manager device (CRWM) 170 that manages the work (CRW) information to find the CRXM to request the inquiry (S410), A target CRXM that manages a copyright delegation credential manifest for a work (CRW) can be found (S415).

The inquired copyright authorization credential manifest (CRCD manifest) is a copyright policy ( Right Policy) and CRU-duty transaction proof requirement for copyright users. The copyright delegation credential specification inquired does not include the delegation of authority from one CRXM to another CRXM.

4 is a flowchart illustrating a method of issuing a copyright agreement credential between an intermediary device and a copyright user device in a protocol-based copyright transaction credential issuance system according to an embodiment.

According to a further aspect, the method of issuing copyright transaction credentials performed by the intermediary device 130 of the system transmits a credential proposal message including a copyright delegation credential specification identifier to the copyright user device 150 ) receiving from (S440); checking whether a copyright delegation credential specification corresponding to the copyright delegation credential specification identifier exists (S450); If the Copyright Delegation Credential Specification exists, if the credential offer message contains submissions to the requirements for proof of transactions for copyright users, the submissions are copyrighted in the Copyright Authorization Credential Specification. A user submission data verification step (S455) to check whether the transaction verification requirements for the user are satisfied; When the copyright delegation credential specification exists, if the credential offer message includes a transaction proof requirement for the intermediary, create an intermediary submission that generates a submission for the transaction proof requirement for the intermediary step (S457); When verification fails in the verification step of the user submission data, the transaction proof requirement for the copyright user in the copyright delegation credential specification is included, and when the transaction proof requirement for the intermediary is generated in the intermediary submission data generation step, the above Transmitting a credential offer (offer-credential) message including the submitted data generated for the transaction proof requirement for the intermediary and including the copyright delegation credential specification identifier to the copyright user device (S460); Receiving a credential request (request-credential) message including a copyright delegation credential specification identifier from the copyright user device (S480); If the credential request message includes the data submitted for the transaction proof requirement for the copyright user, checking whether the submitted data satisfies the transaction proof requirement for the copyright user (S490); If the submitted data satisfies the transaction proof requirement for the copyright user, generating a copyright use agreement credential including an intermediary's digital signature (S495); and transmitting, to the copyright user device, a credential issue-credential message including the copyright use agreement credential and the processing result of the credential request message when the copyright use agreement credential is generated (S499) includes ;

According to a further aspect, the method includes: receiving a request for a copyright delegation credential specification from a copyright user device (S420); and transmitting the copyright delegation credential specification to the copyright user device (S425).

According to an additional aspect, the method includes the step of storing the generated copyright use agreement credential according to the processing method when the processing method for the copyright agreement credential to be issued is included in the credential request message (S495) further includes ;

According to another aspect of the proposed invention, the copyright transaction credential issuance method performed by the copyright user device 150 transmits a credential proposal message including a copyright delegation credential specification identifier to an intermediary transmitting to the device 130 (S440); Receiving a credential proposal (offer-credential) message including the copyright delegation credential specification identifier from the intermediary device (S460); Checking the copyright authorization credential specification identifier (S470); If the credential proposal message includes the submitted data generated for the transaction proof requirement for the intermediary, verifying the submitted data received from the intermediary terminal according to the transaction proof requirement for the intermediary (S475); If the credential proposal message includes a request for proof of transaction for the copyright user, generating submission data for the request for proof of transaction for the copyright user (S477); When the credential proposal message includes a transaction proof requirement for a copyright user, the credential request ( request-credential) transmitting a message to the intermediary device (S480); and receiving, from the intermediary device, a credential issue-credential message including the copyright use agreement credential and the processing result of the credential request message when the credential of the copyright use agreement is generated in the intermediary device ( S499);

The copyright user device (CRU) 150 provides a credential proposal when it intends to proceed with a right agreement contract according to the contents of the CRCD credential manifest of the target to be transacted. The message is transmitted to the intermediary device (CRXM) 130 (S440).

The credential offer (propose-credential) message contains the retrieved CRCD credential manifest identifier. The credential offer message may optionally include a presentation submission for a CRU-duty transaction proof requirement for a copyright user.

The CRXM-present transaction proof requirement for the intermediary requested by the CRU may be selectively transmitted to the intermediary device (CRXM) 130 that issues the copyright use agreement credential (CRA verifiable credential). As an example of the CRXM-present transaction proof requirement for an intermediary, verify that the intermediary is a certified copyright trustee (or copyright intermediary agency) for a music work, and the intermediary can make a transaction for the work This could be something like checking that you have a delegation of authority.

The intermediary device 130 that has received the credential offer (propose-credential) message performs as follows. It is checked whether a CRCD credential manifest corresponding to the copyright delegation credential specification identifier included in the credential proposal message exists (S450).

If the copyright delegation credential specification exists, check whether there is a proof submission for the transaction proof requirement for the copyright user in the credential offer message. If there is a submission data (Proof submission), it is checked and verified whether it is a submission data (Proof submission) according to the transaction proof requirement for the copyright user in this copyright delegation credential specification (S455).

When the credential offer message includes the transaction proof requirement for the intermediary (CRXM-present transaction proof requirement), submission data for this is generated (S457).

The intermediary device 130 transmits a credential offer (offer-credential) message including the copyright delegation credential specification identifier to the copyright user device (CRU) 150 (S460).

The credential proposal message may include submissions for the CRXM-present transaction proof requirement for the intermediary.

If there is a transaction proof requirement for the copyright user in the CRCD credential manifest, there was no corresponding proof submission in the previous credential offer message, or If it is not a reasonable proof submission, a CRU-duty transaction proof requirement for the copyright user is included in the credential proposal message.

The copyright user equipment (CRU) 150 that has received the credential offer (offer-credential) message performs as follows. After confirming the copyright delegation credential specification identifier (S470), the proof data (Proof submission) submitted by the intermediary device 130 is verified according to the CRXM-present transaction proof requirement for the intermediary (S475) . And when the intermediary device 130 provides a transaction proof requirement for the copyright user, it generates a proof submission (Proof submission) (S477).

The copyright user device (CRU) 150 transmits a credential request (request-credential) message to the intermediary device 130 to request the intermediary device 130 to issue a CRA verifiable credential (S480). ).

The credential request message includes a copyright delegation credential specification identifier. Optionally, it is possible to create a submission material (Proof submission) including proof information for the transaction proof requirement for the copyright user and include it in the credential request message.

Optionally, in the credential request message, the processing method for the copyright consent credential to be issued (e.g., CRXM database storage, storage through blockchain DLT (Digital Ledger Technology), return of the copyright consent credential, etc.) can be specified. .

The intermediary device 130 receiving the credential request message satisfies the CRU-duty transaction proof requirement for the submission data (Presentation submission) provided by the copyright user device (CRU) 150 for the copyright user. Check whether it is (S490).

If the verification is successful, the copyright use agreement credential including the electronic signature of the intermediary device 130 is generated (S495). And, according to the processing method requested by the copyright user equipment (CRU) 150, the copyright use agreement credential is stored (S495). This storage can be stored in a database within the CRXM, or through a blockchain DLT (Distributed Ledger Technology) that can be securely shared with other CRXMs.

The intermediary device 130 transmits an issue-credential message including the copyright use agreement credential together with the processing result value (success/failure) to the copyright user device (CRU) 150 (S499).

5 is a configuration diagram illustrating the configuration of an intermediary device that issues a copyright authorization credential in a protocol-based copyright transaction credential issuing system according to an embodiment.

According to another aspect of the proposed invention, in a protocol-based copyright transaction credential issuance system including a delegator device and an intermediary device that is a delegate, the intermediary device 130 that issues the copyright authorization credential is a message receiving unit 510 , a credential specification verification unit 530 , a delegated submission data generation unit 550 , a delegation credential generation unit 570 , and a message transmission unit 590 .

The message receiving unit 510 is, from the delegator device 110, a credential offer message including a copyright delegation credential specification and a transaction proof requirement presented by a mandator for verifying the mandator, or a copyright delegation credential specification identifier and delegator Receives a credential request message containing delegator submissions with proof information for the proposed transaction proof requirement.

The credential specification verification unit 530 verifies the contents of the copyright delegation credential specification.

The trustee submission data generation unit 550 generates the trustee submission data including proof information for the transaction proof requirement presented by the trustee.

The authorization credential generating unit 570 performs verification on the data submitted by the delegator, and generates a copyright delegation credential when the verification of the data submitted by the delegator is successful.

The message sending unit 590, to the delegator device 110, includes a credential proposal message including a copyright delegation credential specification, the delegator submission data, and a delegator presented transaction proof requirement for delegator verification, or the credential request message Sends a credential issuance message including the processing result of

6 is a block diagram illustrating the configuration of an intermediary device that issues a copyright use agreement credential in a protocol-based copyright transaction credential issuance system according to an embodiment.

According to another aspect of the proposed invention, in a protocol-based copyright transaction credential issuance system including a copyright user device and an intermediary device, the intermediary device 130 that issues the copyright use agreement credential is a message receiving unit 610, It includes a credential specification confirmation unit 630 , an intermediary submission data generation unit 650 , a usage agreement credential generation unit 670 , a usage agreement credential storage unit 680 , and a message transmission unit 690 .

The message receiving unit 610 receives, from the copyright user device 150 , a credential offer message including a copyright authorization credential specification identifier, or a credential request message including a copyright authorization credential specification identifier.

The credential specification confirmation unit 630 checks whether a copyright authorization credential specification corresponding to the copyright authorization credential specification identifier exists.

The intermediary submission data generation unit 650 generates intermediary submission data for the transaction verification requirement for the intermediary when the credential offer message includes a transaction proof requirement for the intermediary.

Credential generation unit 670 for consent to use, the data submitted by the user for the transaction proof requirement for the copyright user included in the credential offer message or credential request message to the copyright user in the copyright delegation credential specification If the transaction proof requirements are satisfied, the copyright agreement credential is created with the digital signature of the intermediary.

The usage agreement credential storage unit 680 stores the generated copyright usage agreement credentials.

The message transmitter 690 transmits, to the copyright user device 150 , a credential proposal message including a copyright delegation credential specification identifier, or a credential issuance message including a processing result of the credential request message.

Although the present invention has been described above with reference to the accompanying drawings, the present invention is not limited thereto, and it should be construed to encompass various modifications that can be apparent from those skilled in the art. The claims are intended to cover such modifications.

110: delegate device 130: intermediary device
150: copyright user device 170: work manager device
510: message receiving unit 530: credential specification verification unit
550: Delegation submission data generation unit 570: Authorization delegation credential generation unit
590: message transmitter
610: message receiving unit 630: credential specification confirmation unit
650: Intermediary submission data generation unit 670: User consent credential generation unit
680: user consent credential storage unit 690: message transmission unit

Claims (20)

The method of issuing copyright authorization credentials performed by the intermediary device of the protocol-based copyright transaction credential issuance system including the delegator device and the intermediary device that is the delegate is,
transmitting, to the delegator device, a credential proposal message including a submission material including a copyright delegation credential specification, proof information for a transaction proof requirement presented by the principal, and a request for proof of a transaction presented by a delegate for verification of the delegate;
Receiving a credential request message including a submission material including a copyright delegation credential specification identifier and proof information for a request for proof of transaction presented by the delegator from the delegator device;
performing verification on the submitted data including proof information for the transaction proof requirements presented by the delegator;
if the verification is successful, generating a copyright delegation credential; and
transmitting a credential issuance message including a processing result of the credential request message to a delegator device;
A method of issuing copyright transaction credentials, including. The method according to claim 1, wherein the method comprises:
Receiving a credential offer message including a copyright delegation credential specification and a request for proof of a transaction to be presented by a person for verification of a person from a delegator device;
verifying the contents of the copyright delegation credential specification; and
generating a submission including proof information for the transaction proof requirement presented by the principal;
Further comprising, a method of issuing copyright transaction credentials. The method according to claim 1, The credential issuance message,
If the credential request message includes a method of processing the copyright delegation credential to transmit the copyright delegation credential to the delegator, the method further comprising a copyright delegation credential. The method according to claim 1, The copyright delegation credential specification,
A method of issuance of a copyright transaction credential, including identifier information for the subject work, and a copyright policy that includes the various permissions provided to copyright users for use of this work, and the obligations that must be fulfilled for use under this permission. The method according to claim 1, The copyright delegation credential specification,
A method of issuing a copyright transaction credential, comprising any one of a transaction proof requirement for a copyright user, a transaction proof requirement for an intermediary, and a proof of use requirement for a copyright user. The method according to claim 1, wherein the requirement for proof of transaction presented by the principal is:
A method for issuing copyright transaction credentials, comprising a transaction proof requirement for an intermediary included in the copyright delegation credential specification of the upper delegator when the delegator has been delegated authority from the upper delegator. The method of issuing copyright authorization credentials performed by the delegator device of the protocol-based copyright transaction credential issuance system including the delegator device and the intermediary device that is the delegate is,
Receiving, from the intermediary device, a credential proposal message including a copyright delegation credential specification, a submission material including proof information on a requirement for a proof of a transaction presented by the principal, and a requirement for a proof of a transaction presented by a delegate for verifying the delegate;
performing verification on the submitted data including proof information on the copyright delegation credential specification and the transaction proof requirement presented by the person in charge;
generating submission materials including proof information for the transaction proof requirements presented by the delegate;
The intermediary sends a credential request message containing the copyright delegation credential specification identifier, a submission containing proof information for the mandated transaction proof requirements, and how to process the copyright delegation credential and the copyright delegation credential specification. transmitting to the device;
receiving a credential issuance message including a processing result of the credential request message from an intermediary device;
A method of issuing copyright transaction credentials, including. The method according to claim 7, wherein the method comprises:
generating a copyright delegation credential specification; and
transmitting a credential offer message including a copyright delegation credential specification and a request for proof of a transaction to be presented by a principal for verification of the principal to the intermediary device;
Further comprising, a method of issuing copyright transaction credentials. The method of issuing credentials for the consent to copyright use performed by the intermediary device of the protocol-based copyright transaction credential issuance system including the copyright user device and the intermediary device,
Receiving a credential offer message including a copyright delegation credential specification identifier from a copyright user device;
checking whether a copyright delegation credential specification corresponding to the copyright delegation credential specification identifier exists;
sending a credential suggestion message including a copyright delegation credential specification identifier to a copyright user device;
Receiving a credential request message including a copyright delegation credential specification identifier from a copyright user device;
Confirming whether the data submitted by the user for the transaction proof requirement for the copyright user included in the credential offer message or the credential request message satisfies the transaction proof requirement for the copyright user in the copyright delegation credential specification; ;
generating a copyright consent credential including an intermediary's digital signature when the user-submitted data satisfies a transaction proof requirement for a copyright user; and
transmitting, to the copyright user device, a credential issuance message including the copyright use agreement credential and the processing result of the credential request message when the copyright use agreement credential is generated;
A method of issuing copyright transaction credentials, including. The method of claim 9, wherein the method comprises:
when the credential offer message includes a transaction proof requirement for an intermediary, generating intermediary submission data for the transaction proof requirement for the intermediary; and
including the intermediary submission material in the credential proposal message;
Further comprising, a method of issuing copyright transaction credentials. The method according to claim 9, wherein the credential proposal message,
A method of issuing a copyright transaction credential, further comprising; a transaction proof requirement for a copyright user in the Copyright Delegation Credential Specification. The method of claim 9, wherein the method comprises:
receiving a request for a copyright delegation credential specification from a copyright user device; and
transmitting the copyright delegation credential specification to the copyright user device;
Further comprising, a method of issuing copyright transaction credentials. The method of claim 9, wherein the method comprises:
When the credential request message includes a processing method for the copyright use agreement credential to be issued, storing the generated copyright use agreement credential according to the processing method; further comprising, a copyright transaction credential issuance method . The method of issuing the copyright consent credential performed by the copyright user device of the protocol-based copyright transaction credential issuance system including the copyright user device, the work manager device, and the intermediary device,
transmitting a credential offer message including a copyright delegation credential specification identifier to an intermediary device;
Receiving a credential proposal message including a copyright delegation credential specification identifier from an intermediary device;
identifying a copyright delegation credential specification identifier;
transmitting a credential request message including a copyright delegation credential specification identifier to an intermediary device; and
receiving, from the intermediary device, a credential issuance message including the copyright use agreement credential and a result of processing the credential request message when the credential of the copyright use agreement is generated in the intermediary device;
A method of issuing copyright transaction credentials, including. The method of claim 14, wherein the method comprises:
if the credential proposal message includes the intermediary submission data generated for the transaction verification requirement for the intermediary, verifying the intermediary submission data according to the transaction verification requirement for the intermediary;
Further comprising, a method of issuing copyright transaction credentials. The method of claim 14, wherein the method comprises:
generating user submissions for transaction proof requirements for copyright users; and
including the user submission data in the credential offer message or credential request message;
Further comprising, a method of issuing copyright transaction credentials. The method of claim 14, wherein the method comprises:
sending a request for a copyright delegation credential specification to an intermediary device;
receiving a copyright delegation credential specification from an intermediary device;
checking the contents of the copyright delegation credential specification; and
If there is a transaction proof requirement for the copyright user in the copyright delegation credential specification, generating a submission material for the transaction proof requirement for the copyright user;
Further comprising, a method of issuing copyright transaction credentials. The method of claim 14, wherein the method comprises:
Transmitting a request for location information of an intermediary device that manages a copyright delegation credential specification related to a work to obtain a copyright use agreement to a work manager device that manages the work; and
Receiving from the works manager device for the location information of the intermediary device;
Further comprising, a method of issuing copyright transaction credentials. In a protocol-based copyright transaction credential issuance system including a delegator device and an intermediary device that is a delegate, the intermediary device that issues the copyright authorization credential is:
From the delegator device, a credential offer message containing a copyright delegation credential specification and a proof of a delegate presented transaction requirement for verifying the delegate, or a copyright delegation credential specification identifier and proof information for the delegator presented transaction proof requirement. a message receiving unit for receiving a credential request message including the included delegator submission data;
a credential specification verification unit for verifying the contents of the copyright delegation credential specification;
a trustee submission data generation unit for generating trustee submission data including proof information for the trustee-presented transaction proof requirement;
an authority delegation credential generating unit that performs verification on the data submitted by the delegator and generates a copyright delegation credential when the verification of the data submitted by the delegator is successful; and
As a delegator device, a credential proposal message including the copyright delegation credential specification, the submission data of the delegate, and a request for proof of transaction to be presented by the delegate for verification of the delegate, or a credential issuance message including the processing result of the credential request message a message sending unit that transmits;
An intermediary device of the copyright transaction credential issuance system, comprising a. In the protocol-based copyright transaction credential issuance system including the copyright user device and the intermediary device, the intermediary device that issues the copyright agreement credential is:
a message receiving unit for receiving, from the copyright user device, a credential offer message including a copyright authorization credential specification identifier, or a credential request message including a copyright authorization credential specification identifier;
a credential specification confirmation unit for confirming whether a copyright authorization credential specification corresponding to the copyright authorization credential specification identifier exists;
When the credential offer message includes a transaction proof requirement for an intermediary, an intermediary submission data generation unit for generating intermediary submission data for the transaction proof requirement for the intermediary;
Intermediary if the user submission of the transaction proof requirement for the copyright user included in the above credential offer message or credential request message satisfies the transaction proof requirement for the copyright user in the Copyright Delegation Credential Specification Credential generating unit for consent to create a copyright consent credential including the digital signature of the user;
a user consent credential storage unit for storing the generated copyright use consent credentials; and
To the copyright user device, a message transmitting unit for transmitting a credential proposal message including a copyright delegation credential specification identifier, or a credential issuance message including a processing result of the credential request message;
An intermediary device of the copyright transaction credential issuance system, comprising a.

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