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8.31.3 Procedure
Figure 8.31.3-1 illustrates the procedure for API invoker obtaining authorization from resource owner. Pre-conditions: 1. The resource owner function (ROF) can communicate with the CCF (Authorization function). 2. Access to an API exposing function offered service API requires obtaining authorization from a resource owner (RO). Figure 8.31.3-1: Procedure for API invoker obtaining authorization from resource owner 1. The API invoker requests to obtain authorization information to invoke the service API exposed by the API exposing function (AEF) and to access information owned by the resource owner at the AEF through the invocation of an obtain service API authorization request to the CCF. The request contains API invoker information required for authorization, the information identifying the service API, the purpose for data processing and any information required for authentication of the API invoker. The request may include finer level service API access requirements (e.g., access per service API operation or access per API service resource) and resource owner-related information required to obtain resource owner authorization information. NOTE 1: The details of the information provided by the API invoker for obtaining service API access are specified in 3GPP TS 33.122 [12]. 2. The CCF performs the authentication of the API invoker (using authentication information). Then the Authorization function determines the authorization by checking the authorization information available in the CCF and by checking the authorization information provided by the RO via the ROF. The request to the ROF contains application service information (e.g. the application service provider and application identifier), the purpose for data processing and the resource owner data information for which the API invoker requests access grants. NOTE 2: The detailed procedure to obtain the RO's authorization information is specified in 3GPP TS 33.122 [12]. NOTE 3: Step 1 can occur when the API invoker receives a failure in Service API invocation response indicating that authorization information from resource owner(s) is required. 3. Based on the RO authorization information obtained via the ROF, the CCF sends an obtain service API authorization response to the API invoker. 4. The API invoker sends service API invocation request to the API exposing function with the authorization information received from CCF (Authorization function) in step 3. 5. The API invoker receives the service API invocation response resulting from the service API invocation once the API exposing function has checked whether the API invoker is authorized to invoke that service API based on the authorization information received from CCF (Authorization function).
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8.32 Reducing authorization information inquiry in a nested API invocation
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8.32.1 General
The nested API invocation scenario is a scenario where an API invocation towards a first API exposing function triggers that API exposing function to request an API invocation towards a second API exposing function, which is in the same API provider domain as the first API exposing function, which can be the PLMN trust domain or a 3rd party trust domain. This scenario addresses the situation in which a service API may require the services of other service APIs. For example, if the API invoker invokes SEAL SS_LocationInfoRetrieval API (clause 9.4.4 of TS 23.434 [15]), the location management server (acting as an API exposing function for the API invoker and as an API invoker for the NEF) may invoke NEF API to retrieve UE location information from 5GC. In this scenario, the CAPIF may reduce the authorization information inquiries for a nested API invocation using procedure described in clause 8.32.3.
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8.32.2 Information flows
NOTE: The security aspects of this procedure are specified in TS 33.122 [12]. 8.32.3 Procedure Figure 8.32.3-1 illustrates the procedure to obtain authorization information in a nested API invocation, in which an API exposing function receiving the service API invocation request interacts with another API exposing function to provide the service. Pre-conditions: 1. The resource owner function can communicate with the CCF (Authorization function). 2. The API exposing functions 1 and 2 are in the same trust domain. Figure 8.32.3-1: Procedure for obtaining authorization information in a nested API invocation 1. The API invoker requests authorization information to invoke the service API exposed by API exposing function 1. NOTE 1: This step use either the procedure to obtain authorization to access service API specified in clause 8.11 or the procedure to obtain authorization to access service API that involves the resource owner function as specified in clause 8.31. 2. The API invoker sends a service API invocation request to API exposing function 1 with the authorization information received in step 1. The API exposing function 1 verifies the API invoker request. 3. Based on the service API invocation request, API exposing function 1 decides to invoke another service API exposed by API exposing function 2. 4. API exposing function 1, acting as an API invoker, before interacting with API exposing function 2, shall obtain from the CCF the authorization information to access the service API exposed by API exposing function 2. NOTE 2: To obtain the authorization information, the API exposing function 1 exchanges the authorization information provided in the API invoker's request (in step 2) with authorization information for accessing the service API exposed by API exposing function 2, e.g. to avoid further interaction with the API invoker. The security mechanism involved in this exchange are out of scope of the present document. 5. API exposing function 1, acting as an API invoker sends a service API invocation request to API exposing function 2 with the authorization information received in step 4. 6. The API exposing function 1 receives the service API invocation response resulting from the service API invocation once API exposing function 2 has checked whether the API exposing function 1, acting as API invoker, is authorized to invoke that service API based on the authorization information. 7. The API invoker receives the service API invocation response resulting from the service API invocation.
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8.33 Obtaining collective authorization from a resource owner
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8.33.1 General
Using the procedure described in clause 8.31 the CAPIF may authorize an API invoker to invoke a service API based on the authorization information from the resource owner given before the API invocation. This clause describes an extension to that procedure to enable the CAPIF to obtain authorization information from the resource owner relating to multiple API invokers and service APIs in a single interaction. Clause 8.33.3 shows the procedure for obtaining collective authorization information from a resource owner via their resource owner function.
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8.33.2 Information flows
NOTE: The security aspects of this procedure are specified in clause 6.4 and 6.5.3 of 3GPP TS 33.122 [12].
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8.33.3 Procedure
Figure 8.33.3-1 illustrates the procedure for obtaining collective authorization from resource owner. The mechanism to obtain collective authorization from a resource owner is supported by the CAPIF core function. Pre-conditions: 1. The resource owner function can communicate with the CCF (Authorization function). 2. Access to an API exposing function offered service API requires obtaining authorization from a resource owner. 3. The API invoker is successfully onboarded as described in clause 8.1. 4. The CCF is configured for handling collective authorization, see table 8.33.3-1. Figure 8.33.3-1: Procedure for obtaining collective authorization from resource owner 1. An API invoker sends obtain service API authorization request to the CAPIF core function for obtaining permission to access a service API by including its API invoker identity information and any information required for authentication of the API invoker. The API invoker includes in the request information about the purpose and the targeted resources and operations to be performed on those resources. 2. The CCF performs the authentication of the API invoker (using authentication information) and checks whether it is permitted to access the requested service API by checking whether a resource owner authorization information is already available for that API invoker. If the authorization for accessing the requested resources for the signalled purpose is already granted, the procedure continues with step 4. 3. If authorization information is not available regarding whether the API invoker is permitted to access the requested service API (i.e., there is no applicable resource owner authorization information available) the collective resource owner authorization configuration (table 8.33.3-1) is assessed. If authorization trigger criteria have been specified as part of the collective resource owner authorization configuration, interactions with the resource owner are only initiated once the trigger conditions are met. If trigger criteria have not been set or once the trigger conditions are met, the authorization function determines the authorization by interacting with the resource owner via the ROF deployed on a UE. Based on the configured collective resource owner authorization configuration at the CCF and any cached “obtain service API authorization requests”, the scope of the request towards the ROF can be expanded to include additional API invokers and or service APIs based on the assumption that there is an association between the requesting API invoker and the API exposing functions and API invokers listed in the CCF configuration. NOTE 2: The details of the interaction between RO and ROF for capturing the resource owner authorization are considered out-of-scope of the present specification. NOTE 3: The detailed procedure to obtain the resource owner's authorization information for multiple API invokers in a single request, including whether such authorization can be limited to the API invoker initiating the request and only for the specific service being requested, is out of scope of this release of the specification. 4. Based on the RO authorization information obtained via the ROF for each API invoker and corresponding service API(s), the CCF sends an API invoker specific service API authorization response (as described in clause 8.31) to the API invoker that initially triggered the collective resource owner authorization information requested and to each API invoker for which a obtain service API authorization request was received (for the same service API) whilst the collective resource owner authorization configuration duration timer was running, i.e., the cached requests. 5. An API invoker that receives the service API authorization response can send service API invocation requests to the API exposing function with their API invoker specific resource owner authorization information as described in clause 8.31. 6. The API exposing function will send a service API invocation response once it has successfully checked that the API invoker is authorized to invoke that service API based on the authorization information. Table 8.33.3-1: Collective resource owner authorization configuration Information element Status Description List of API invoker associations (NOTE 1) O Lists of API invokers with their associated service APIs > API invoker identity information list M List of API invoker identities > Service API identification list M List of AEF service API identities. List of trigger criteria (NOTE 1) O Criteria for triggering requesting of resource owner authorization > Duration (NOTE 2) O Initiate request towards RO via ROF after the given duration (in seconds) after receiving a obtain service authorization request from an API invoker > Timeperiod (NOTE 2) O Time period during which notifications may be sent towards RO via ROF. > Resource owner identifier O Can only be included if a duration or timeslot is included. Indicates that the resource owner authorization trigger criteria is to be applied to the specific resource owner identified by their GPSI, i.e., no other resource owner authorization trigger criteria shall be applied for that resource owner. NOTE 1: At least one of these attributes shall be present NOTE 2: Only one of these attributes shall be present
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8.34 UE-deployed API invoker accessing other UEs’ resources of a group
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8.34.1 General
This clause specifies the procedures for API invoker on a UE to be able to access the services exposing resources of other UEs of a group. The UEs belong to the same group and the same VAL service provider (IoT case) or the same user and all of them belong to the same CAPIF provider domain. The authorization relationship between UE2 (the API invoker is in UE2) and UE1, given by the membership to the same group, is within the CAPIF provider domain. The difference of this scenario compared with the procedure of an API invoker obtaining authorization from resource owner described in clause 8.31 is that: a. the API invoker is not deployed in the UE whose resources are being accessed, b. the API invoker needs to provide in the request, in addition to the identity of the UE whose resources are being accessed, the Group Identifier and the identity of the UE2; and c. the group membership needs to be managed by the CAPIF provider as described in Annex E. NOTE: Other possible scenarios, e.g. where the authorization relationship given by the membership to the same group is within the Application Service Provider, are not specified in this release of the specification.
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8.34.2 Information flows
NOTE: The security aspects of this procedure are specified in 3GPP TS 33.122 [12].
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8.34.3 Procedure
Figure 8.34.3-1 presents the procedure for enabling a UE-hosted API invoker accessing network-hosted resources owned by other UEs that belong to the same group. Pre-condition: 1. The network hosts individual resources for a group of UEs which can be accessed via AEF provided the necessary security conditions are met. 2. UE1 and UE2 belong to the same group and the same VAL service provider (IoT case) or the same user. 3. CCF is provisioned with the information of a Group Resource Owner (GRO) which indicates UE 1 as the authorized RO (e.g. by business relationship between the group of UEs) to provide resource owner authorization for the resources belonging to the UEs in this group. NOTE: In this release of the specification group context information is provisioned by the CAPIF administrator as specified in Annex E and the other mechanisms are out of scope of this release. Figure 8.34.3-1: UE-deployed API invoker accessing other UEs’ resources of a group 1. The API invoker (e.g., in UE 2) sends an Obtain service API authorization request to the CCF for obtaining permission to access the service API for other UE's resources hosted in the network (e.g., location) by including the API invoker identity information and any information required for authentication of the API invoker. The request includes API invoker information, the group identifier, and the UE in a group whose resources are to be accessed, and the identity of UE2. Additionally, the API invoker may include in the request information about the purpose and operations (scope) to be performed on the targeted resources. 2. CCF performs authentication of the API invoker (using authentication information) as specified in 3GPP TS 33.122 [12]. 3. The CCF, based on the group identifier determines that RO authorization is provided by a GRO. The CCF then resolves the identity of the GRO responsible for the group of UEs based on the provisioned group context information related to the GRO, as specified in Annex E. The CCF shall additionally check whether UE2 belongs to the group. 4. If step 3 is successful, the CCF performs the resource owner authorization check using the GRO as the RO for the requested resources of other UE(s) belonging to the group. NOTE: The details of the procedure to obtain resource owner’s authorization information from GRO are out the scope of this release of the specification. 5. Based on the group resource owner authorization received in step 4, the CCF sends an Obtain service API authorization response to the API invoker. The authorization response indicates that the access to UE (resource owner) network resource(s) is authorized for an indicated scope. 6. The API invoker sends service API invocation request to the API exposing function with the RO authorization information received in step 5. 7. The API invoker receives the service API invocation response resulting from the service API invocation once the API exposing function has checked whether the API invoker is authorized to invoke that service API based on the RO authorization information.
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8.35 Revoking resource owner authorization
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8.35.1 General
The procedure in this subclause corresponds to the architectural requirements for revoking resource owner authorization.
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8.35.2 Information flows
The information flows for the interactions between the CAPIF core function, the API Invoker and the AEF are described in clause 8.23.2. Editor's Note: The security aspects of this procedure are to be detailed by SA3.
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8.35.3 Procedure
Figure 8.35.3-1 illustrates the procedure for revoking resource owner authorization to access service API initiated by the resource owner function. Pre-conditions: 1. The API invoker is authenticated and authorized to use the service API. Figure 8.35.3-1: Procedure for revoking resource owner authorization 1. The RO triggers the revocation of the resource authorization via ROF. 2. The ROF requests resource authorization revocation to the CAPIF core function. NOTE: The detailed procedure of resource authorization revocation is to be specified in TS 33.122 [12]. 3. The CAPIF core function determines the revoked authorization information for the API Invoker and Service API as specified in clause 6.5.3.4 of TS 33.122 [12]. 4. The CAPIF core function sends a revoke resource authorization notification to the API invoker according to the procedure in clause 8.23.4. 5. The CAPIF core function sends a revoke resource authorization notification to the API exposing function according to the procedure in clause 8.23.4.
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8.36 CCF Obtaining Resource Owner Authorization
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8.36.1 General
The procedure in this subclause corresponds to the architectural requirements for CCF obtaining resource owner authorization.
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8.36.2 Information flows
The information flows for the interactions to obtain RO authorization information from the RO function are part of the Obtain service API authorization procedure described in clause 8.31.2. NOTE: The security aspects of this procedure are specified in clause 6.5.3.B of 3GPP TS 33.122 [12].
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8.36.3 Procedure
Figure 8.36.3-1 illustrates the procedure for CCF obtaining resource owner authorization. Pre-condition: 1. ROF and CCF have successfully completed mutual authentication. Figure 8.36.3-1: Procedure for obtaining resource owner authorization 1. The CAPIF core function sends the resource owner authorization information request along with the API invoker information received in the obtaining service API authorization procedure as described in clause 8.31.3. 2. Authentication of the resource owner is performed as specified in clause 6.5.3.1 of 3GPP TS 33.122 [12]. 3. The resource owner sends the resource owner authorization information response via ROF to the CAPIF core function along with the resource authorization information as specified in clause 8.31.3. 4. The CAPIF core function stores the resource owner authorization information.
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8.37 UE-deployed API invoker accessing other UEs’ resources
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8.37.1 General
This clause specifies the procedures for API invoker on a UE to be able to access the services exposing resources of other UEs. The authorization relationship between UE2 (the API invoker is in UE2) and UE1 (the resource owner of the accessed network resources is at UE1) is within the Application Service Provider. The difference of this scenario compared with the procedure of an API invoker obtaining authorization from resource owner described in clause 8.31 is that the API invoker is not deployed in the resource owner’s UE. NOTE: Other possible scenarios, e.g. where the authorization relationship between UE(s) is in the CAPIF domain, are not specified in this release of the specification.
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8.37.2 Information flows
NOTE: The security aspects of this procedure are specified in 3GPP TS 33.122 [12]. 8.37.3 Procedure Figure 8.37.3-1 presents the procedure for enabling a UE-hosted API invoker accessing network-hosted resources owned by other UEs for the scenarios introduced in clause 8.37.1. Pre-condition: 1. The network hosts individual resource(s) for a UE which can be accessed via AEF provided the necessary security conditions are met. 2. UE 1 and UE 2 belong to the same CAPIF provider domain. The API invoker knows the RO identifier for UE1. Figure 8.37.3-1: UE-deployed API invoker accessing other UEs’ resources 1. The API invoker in UE2 sends an Obtain service API authorization request to the CCF for obtaining permission to access the service API for other UE’s (UE1) resources hosted in the network by including the API invoker identity information and any information required for authentication of the API invoker. The request shall include the RO identity for UE1, whose resources are trying to be accessed, the API invoker information that is requesting the access, and the information about the purpose and scope to be performed on the targeted resources. 2. The CCF validates and authorizes the API invoker in UE2 as specified in 3GPP TS 33.122 [3]. If the API invoker validation is successful, the CCF checks the Resource Owner authorization information of UE1. The CCF obtains whether the RO (UE1) authorized to the API invoker the access to the network resource(s) for the specified purpose and scope. If the RO authorization information is not available, the CCF may interact with UE1 via ROF to obtain it. 3. Based on the UE1 resource owner authorization obtained in step 2, the CCF sends an Obtain service API authorization response to the API invoker. The response indicates that UE1, as resource owner, authorizes the service API access for an indicated scope. 4. The API invoker sends service API invocation request to the API exposing function with the RO authorization information received in step 2. 5. The API invoker receives the service API invocation response resulting from the service API invocation once the API exposing function has checked whether the API invoker is authorized to invoke that service API based on the RO authorization information.
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8.38 Open Discover service APIs
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8.38.1 General
The following procedure in this subclause corresponds to supporting open discover service APIs. Such open discovery operation allows requestor to discover service API information about the available set of APIs offered by CCF before onboarding.
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8.38.2 Information flows
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8.38.2.1 Open Service API discover request
Table 8.38.2.1-1 describes the information flow open service API discover request from the requestor to the CAPIF core function. Table 8.38.2.1-1: Open Service API discover request Information element Status Description Query information O (see NOTE) Criteria for discovering matching service APIs. It may contain Service API information described in table 8.3.2.1-1, except service API interface details. NOTE: It should be possible to discover all the service APIs.
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8.38.2.2 Open Service API discover response
Table 8.38.2.2-1 describes the information flow open service API discover response from the CAPIF core function to the requestor. Table 8.38.2.2-1: Open Service API discover response Information element Status Description Result M Indicates the success or failure of the open discovery of the service API information Service API information O (see NOTE) Filtered service APIs information that can be shared to the requestor not a recognized user of the CAPIF. It may contain Service API information described in table 8.3.2.1-1, except service API interface details. NOTE: The service API information shall be present if the Result information element indicates that the open service API discover operation is successful. Otherwise, it shall not be present.
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8.38.3 Procedure
Figure 8.38.3-1 illustrates the procedure for open discover service APIs. The open service API discovery mechanism is supported by the CAPIF core function. Pre-conditions: 1. The requestor is not a recognized user of the CAPIF. 2. The CAPIF core function is aware of the Service API information that can be disseminated according to the requestor who is not a recognized user of the CAPIF. Figure 8.38.3-1: Open Discover service APIs 1. The requestor sends an open service API discover request to the CAPIF core function. It may include the query information from the requestor. NOTE 1: The security aspects of this procedure are unspecified in this release of the specification. 2. Upon receiving the open service API discover request, if query information is included, the CAPIF core function retrieves the stored service API(s) information as per the query information in the open service API discover request, otherwise all stored service API(s) information is retrieved. Further, since the requestor is not a recognized user of CAPIF, the CAPIF core function may perform the filtering of service APIs information. NOTE 2: The CAPIF core function could filter the service APIs information to return in the response based on implementation specific means and it is unspecified in this release of the specification. 3. The CAPIF core function sends an open service API discover response to the requestor with the filtered list of service API information.
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9 API consistency guidelines
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9.1 General
This clause specifies the API consistency guidelines for all northbound APIs utilizing CAPIF architecture. The guidelines are categorized as follows: - fundamental API guidelines, applicable to all northbound APIs utilizing CAPIF; and - architecture design considerations, applicable to all northbound APIs utilizing CAPIF. The API guidelines are also applicable for CAPIF APIs specified in the current specification.
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9.2 Fundamental API Guidelines
The specification of each northbound API utilizing the common API framework should define: 1. the function of the API; 2. the resource(s) or endpoints involved; 3. the list of supported operations and their usage; 4. the list of input and output parameters along with applicable schemas, as required; 5. the list of supported response codes; 6. the behaviour of the network entity exposing the APIs (e.g. the CAPIF core function or the API exposing function) for each supported operation; 7. the list of applicable data types; and 8. the list of applicable protocols and data serialization formats. In order to facilitate the consistency of the northbound APIs utilizing the common API framework it is recommended to adopt the guidelines which define the following: 1. consistent nomenclature for the operations, data structures and resources/endpoints; 2. design principles for the use of operations for common tasks; and 3. a template for the consistent documentation of APIs. The northbound APIs utilizing the common API framework should support the following properties: 1. be extensible, such that it is possible to accommodate future requirements, including vendor-specific needs; NOTE: The extension does not replace any existing function in Northbound APIs. 2. support access control mechanisms; 3. support charging, if applicable; and 4. be backward and forward compatible with different versions of the same API. The guidelines above are generic with regard to the API architecture. They are valid for network APIs that follow the RESTful architectural style and that expose resources towards the API invoker, as well as for network APIs of other architectures that expose general network endpoints towards the API invoker. A network endpoint represents one end of a communication channel through which the API consumer communicates with the API producer, using messages of a protocol defined by the API architecture. A resource is identified, and the corresponding endpoint is addressed, by a resource identifier (such as a URI).
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9.3 Architecture design considerations
Northbound APIs utilizing common API framework should adhere to RESTful architecture, whenever possible. Service operations can use custom API operations (RPC-style interaction), when it is seen a better fit for the style of interaction to model, e.g. non-CRUD service operations. NOTE: The selection of a particular API style is specific to each API implementation, and subject to Stage 3 scope. The API design: 1. should have a uniform interface that conveys the resource/data model of the API to its client developers and: a. the implementation of the resource(s)/operations involved in the APIs should be hidden from the client, and adequate operations should be designed to operate on the resource(s)/data; b. any single API should be atomic; c. all resources/operations involved in APIs should be accessible through a common approach, and resources/data should be similarly modified using a consistent approach; 2. should allow the client (such as the API invoker) and the server (such as the CAPIF core function or the API exposing function) to evolve independently, i.e. the client should not have to be aware of the execution aspects of the APIs on the server; 3. should be stateless such that each request from the client (such as the API invoker) to the server (such as the CAPIF core function or the API exposing function) contains all of the information necessary for the server to understand the request; 4. should define the usage of standard operations, such as Create, Read, Update and Delete, consistently along with the applicable response codes; 5. should allow to label responses as cacheable or non-cacheable, to improve network efficiency by supporting caching in the client (such as the API invoker), if applicable in the API architecture; 6. should prevent unwanted modification of the resources/data during invocation of APIs; and 7. should support version control.
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10 CAPIF core function APIs
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10.1 General
Table 10.1-1 illustrates the CAPIF core function APIs. Table 10.1-1: List of CAPIF core function APIs API Name API Operations Known Consumer(s) Communication Type CAPIF_Open_Discover_Service_API Open_Discover_Service_API Open Request/Response CAPIF_Discover_Service_API Discover_Service_API API Invoker, CAPIF core function Request/ Response Subscribe_Event API Invoker Request/ Response Update_Event_Subscription API Invoker Request/ Response Notify_Event API Invoker Notify Unsubscribe_Event API Invoker Request/ Response CAPIF_Publish_Service_API Publish_Service_API API Publishing Function, CAPIF core function Request/ Response Unpublish_Service_API API Publishing Function, CAPIF core function Request/ Response Update_Service_API API Publishing Function, CAPIF core function Request/ Response Get_Service_API API Publishing Function, CAPIF core function Request/ Response Subscribe_Event API Publishing Function Request/ Response Update_Event_Subscription API Publishing Functionr Request/ Response Notify_Event API Publishing Function Notify Unsubscribe_Event API Publishing Function Request/ Response CAPIF_Events API Subscribe_Event API Invoker, API Publishing Function, API Management Function, API Exposing Function Request/ Response Update_Event_Subscription API Invoker, API Publishing Function, API Management Function, API Exposing Function Request/ Response Notify_Event API Invoker, API Publishing Function, API Management Function, API Exposing Function Notify Unsubscribe_Event API Invoker, API Publishing Function, API Management Function, API Exposing Function Request/ Response CAPIF_API_Invoker_management API Onboard_API_Invoker API Invoker Request/ Response Offboard_API_Invoker API Invoker Request/ Response Update_API_Invoker_Details API Invoker Request/ Response Subscribe_Event API Management Function Request/ Response Update_Event_Subscription API Management Function Request/ Response Notify_Event API Management Function Notify Unsubscribe_Event API Management Function Request/ Response CAPIF_API_Provider_Management_API Register_API_Provider API Management Function Request/Response Update_API_Provider API Management Function Request/Response Deregister_API_Provider API Management Function Request/Response CAPIF_Security API Obtain_Security_Method API Invoker Request/ Response Obtain_Authorization API Invoker Request/ Response Obtain_API_Invoker_Info API Exposing Function Request/ Response Revoke_Authorization API Exposing Function Request/ Response Revoke_Authorization_Notify API Invoker Notify CAPIF_Monitoring API Subscribe_Event API Management Function Request/ Response Update_Event_Subscription API Management Function Request/ Response Notify_Monitoring_Service_Event API Management Function Notify Unsubscribe_Event API Management Function Request/ Response CAPIF_Logging_API_Invocation API Log_API_Invocation API exposing function Request/ Response CAPIF_Auditing API Query_API_Invocation_Log API management function Request/ Response CAPIF_Access_Control_Policy API Obtain_Access_Control_Policy API exposing function Request/Response CAPIF_Routing_Info API Obtain_Routing_Info API exposing function Request/Response
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10.2 CAPIF_Discover_Service_API API
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10.2.1 General
API description: This API enables the API invoker to communicate with the CAPIF core function to discover the published service API information over CAPIF-1 or CAPIF-1e.
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10.2.2 Discover_Service_API operation
API operation name: Discover_Service_API Description: Provides the published service APIs information. Known Consumers: API invoker. Inputs: Refer subclause 8.7.2.1. Outputs: Refer subclause 8.7.2.2. See subclause 8.7.3 for the details of usage of this API operation.
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10.2.3 Subscribe_Event operation
API operation name: Subscribe_Event Description: Provides subscription to the CAPIF related event information. Known Consumers: API invoker. Inputs: Refer subclause 8.8.2.1. Outputs: Refer subclause 8.8.2.2. See subclause 8.8.3 for the details of usage of this API operation.
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10.2.4 Notify_Event operation
API operation name: Notify_Event Description: Provides the relevant CAPIF event information to the subscribed entities. Known Consumers: API invoker. Inputs: Refer subclause 8.8.2.3. Outputs: Refer subclause 8.8.2.4. See subclause 8.8.4 for the details of usage of this API operation.
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10.2.5 Unsubscribe_Event operation
API operation name: Unsubscribe_Event Description: Unsubscription to the CAPIF event information. Known Consumers: API invoker. Inputs: Refer subclause 8.8.2.5. Outputs: Refer subclause 8.8.2.6. See subclause 8.8.5 for the details of usage of this API operation.
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10.2.6 Update_Event_Subscription operation
API operation name: Update_Event_Subscription Description: Updates a subscription to CAPIF related event information. Known Consumers: API invoker. Inputs: Refer subclause 8.8.2.7. Outputs: Refer subclause 8.8.2.8. See subclause 8.8.5a for the details of usage of this API operation.
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10.3 CAPIF_Publish_Service_API API
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10.3.1 General
API description: This API enables the API publishing function to communicate with the CAPIF core function to publish the service API information and manage the published service API information over CAPIF-4. NOTE: Stage 3 can decide whether the API for CAPIF_Publish_Service_API can be enabled over CAPIF-4.
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10.3.2 Publish_Service_API operation
API operation name: Publish_Service_API Description: Publish the service API information. Known Consumers: API publishing function, CAPIF core function. Inputs: Refer subclause 8.3.2.1, 8.25.2.1. Outputs: Refer subclause 8.3.2.2, 8.25.2.2. See subclause 8.3.3 and 8.25.3.1 for the details of usage of this API operation.
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10.3.3 Unpublish_Service_API operation
API operation name: Unpublish_Service_API Description: Remove the published service API information. Known Consumers: API publishing function, CAPIF core function. Inputs: Refer subclause 8.4.2.1, 8.25.2.5. Outputs: Refer subclause 8.4.2.2, 8.25.2.6. See subclause 8.4.3 and 8.25.3.4 for the details of usage of this API operation.
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10.3.4 Update_Service_API operation
API operation name: Update_Service_API Description: Update the published service API information. Known Consumers: API publishing function, CAPIF core function. Inputs: Refer subclause 8.6.2.1, 8.25.2.9. Outputs: Refer subclause 8.6.2.2, 8.25.2.10. See subclause 8.6.3 and 8.25.3.6 for the details of usage of this API operation.
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10.3.5 Get_Service_API operation
API operation name: Get_Service_API Description: Retrieve the published service API information. Known Consumers: API publishing function, CAPIF core function. Inputs: Refer subclause 8.5.2.1, 8.25.2.7. Outputs: Refer subclause 8.5.2.2, 8.25.2.8. See subclause 8.5.3 and 8.25.3.5 for the details of usage of this API operation.
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10.3.6 Subscribe_Event operation
API operation name: Subscribe_Event Description: Provides subscription to the CAPIF related event information. Known Consumers: API publishing function. Inputs: Refer subclause 8.8.2.1. Outputs: Refer subclause 8.8.2.2. See subclause 8.8.3 for the details of usage of this API operation.
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10.3.7 Notify_Event operation
API operation name: Notify_Event Description: Provides the relevant CAPIF event information to the subscribed entities. Known Consumers: API publishing function. Inputs: Refer subclause 8.8.2.3. Outputs: Refer subclause 8.8.2.4. See subclause 8.8.4 for the details of usage of this API operation.
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10.3.8 Unsubscribe_Event operation
API operation name: Unsubscribe_Event Description: Unsubscription to the CAPIF event information. Known Consumers: API publishing function. Inputs: Refer subclause 8.8.2.5. Outputs: Refer subclause 8.8.2.6. See subclause 8.8.5 for the details of usage of this API operation.
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10.3.9 Update_Event_Subscription operation
API operation name: Update_Event_Subscription Description: Updates a subscription to CAPIF related event information. Known Consumers: API publishing function. Inputs: Refer subclause 8.8.2.7. Outputs: Refer subclause 8.8.2.8. See subclause 8.8.5a for the details of usage of this API operation.
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10.4 CAPIF_Events API
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10.4.1 General
API description: This API enables the API subscribing entity to communicate with the CAPIF core function to subscribe to and unsubscribe from CAPIF events and receive subsequent notification of CAPIF events. This API is used for the subscription to and notifications of those CAPIF events that are not bound to any of the other CAPIF core function APIs. The following are the key functionalities: - API invoker subscribes to CAPIF events over CAPIF-1 or CAPIF-1e. - API invoker receives notifications for subscribed CAPIF events over CAPIF-1 or CAPIF-1e. - API invoker unsubscribes from CAPIF events over CAPIF-1 or CAPIF-1e. - API invoker updates subscriptions for CAPIF events over CAPIF-1 or CAPIF-1e. - API exposing function subscribes to CAPIF events over CAPIF-3. - API exposing function receives notifications for subscribed CAPIF events over CAPIF-3. - API exposing function unsubscribes from CAPIF events over CAPIF-3. - API exposing function updates subscriptions for CAPIF events over CAPIF-3. - API publishing function subscribes to CAPIF events over CAPIF-4. - API publishing function receives notifications for subscribed CAPIF events over CAPIF-4. - API publishing function unsubscribes from CAPIF events over CAPIF-4. - API publishing function updates subscriptions for CAPIF events over CAPIF-4. - API management function subscribes to CAPIF events over CAPIF-5. - API management function receives notifications for subscribed CAPIF events over CAPIF-5. - API management function unsubscribes from CAPIF events over CAPIF-5. - API management function updates subscriptions for CAPIF events over CAPIF-5. NOTE: Stage 3 can further decide if CAPIF_Events API can be further fine grained into more APIs.
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10.4.2 Subscribe_Event operation
API operation name: Subscribe_Event Description: Provides subscription to the CAPIF related event information. Known Consumers: API invoker, API publishing function, API management function, API exposing function. Inputs: Refer subclause 8.8.2.1. Outputs: Refer subclause 8.8.2.2. See subclause 8.8.3 for the details of usage of this API operation.
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10.4.3 Notify_Event operation
API operation name: Notify_Event Description: Provides the relevant CAPIF event information to the subscribed entities. Known Consumers: API invoker, API publishing function, API management function, API exposing function. Inputs: Refer subclause 8.8.2.3. Outputs: Refer subclause 8.8.2.4. See subclause 8.8.4 for the details of usage of this API operation.
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10.4.4 Unsubscribe_Event operation
API operation name: Unsubscribe_Event Description: Unsubscription to the CAPIF event information. Known Consumers: API invoker, API publishing function, API management function, API exposing function. Inputs: Refer subclause 8.8.2.5. Outputs: Refer subclause 8.8.2.6. See subclause 8.8.5 for the details of usage of this API operation.
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10.4.5 Update_Event_Subscription operation
API operation name: Update_Event_Subscription Description: Updates a subscription to CAPIF related event information. Known Consumers: API invoker, API publishing function, API management function, API exposing function. Inputs: Refer subclause 8.8.2.7. Outputs: Refer subclause 8.8.2.8. See subclause 8.8.5a for the details of usage of this API operation.
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10.5 CAPIF_API_invoker_management API
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10.5.1 General
API description: This API enables the API invoker to communicate with the CAPIF core function to enroll as a registered user of CAPIF and manage the enrollment information over CAPIF-1 or CAPIF-1e.
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10.5.2 Onboard_API_Invoker operation
API operation name: Onboard_API_Invoker Description: Enrolls the API invoker as a recognized user of the CAPIF. Known Consumers: API invoker. Inputs: Refer subclause 8.1.2.1. Outputs: Refer subclause 8.1.2.2. See subclause 8.1.3 for the details of usage of this API operation. 10.5.2a Update_API_Invoker_Details operation API operation name: Update_API_Invoker_Details Description: Enrolls/disenrolls service APIs from the API invoker profile. Known Consumers: API invoker. Inputs: Refer subclause 8.26.2.1. Outputs: Refer subclause 8.26.2.2. See subclause 8.26.3 for the details of usage of this API operation.
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10.5.3 Offboard_API_Invoker operation
API operation name: Offboard_API_Invoker Description: Cancels enrollment of the API invoker as a recognized user of the CAPIF. Known Consumers: API invoker. Inputs: Refer subclause 8.2.2.1. Outputs: Refer subclause 8.2.2.2. See subclause 8.2.3 for the details of usage of this API operation.
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10.5.4 Subscribe_Event operation
API operation name: Subscribe_Event Description: Provides subscription to the CAPIF related event information. Known Consumers: API management function. Inputs: Refer subclause 8.8.2.1. Outputs: Refer subclause 8.8.2.2. See subclause 8.8.3 for the details of usage of this API operation.
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10.5.5 Notify_Event operation
API operation name: Notify_Event Description: Provides the relevant CAPIF event information to the subscribed entities. Known Consumers: API management function. Inputs: Refer subclause 8.8.2.3. Outputs: Refer subclause 8.8.2.4. See subclause 8.8.4 for the details of usage of this API operation.
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10.5.6 Unsubscribe_Event operation
API operation name: Unsubscribe_Event Description: Unsubscription to the CAPIF event information. Known Consumers: API management function. Inputs: Refer subclause 8.8.2.5. Outputs: Refer subclause 8.8.2.6. See subclause 8.8.5 for the details of usage of this API operation.
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10.5.7 Update_Event_Subscription operation
API operation name: Update_Event_Subscription Description: Updates a subscription to CAPIF related event information. Known Consumers: API management function. Inputs: Refer subclause 8.8.2.7. Outputs: Refer subclause 8.8.2.8. See subclause 8.8.5a for the details of usage of this API operation.
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10.6 CAPIF_Security API
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10.6.1 General
API description: This API enables the API invoker to communicate with the CAPIF core function to authenticate and obtain authorization to access service APIs over CAPIF-1 or CAPIF-1e. This API also enables the API exposing function (AEF) to obtain API invoker information and revoke API invoker authorization over CAPIF-3.
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10.6.2 Obtain_Security_Method operation
API operation name: Obtain_Security_Method Description: Obtain information about service API security method with CAPIF core function for service API invocations. Known Consumers: API invoker. Inputs: Refer subclause 8.10A.2. Outputs: Refer subclause 8.10A.2. See subclause 8.10A.3 for the details of usage of this API operation.
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10.6.3 Obtain_Authorization operation
API operation name: Obtain_Authorization Description: Provides the authorization information to access relevant service API. Known Consumers: API invoker. Inputs: Refer subclause 8.11.2. Outputs: Refer subclause 8.11.2. See subclause 8.11.3 for the details of usage of this API operation.
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10.6.4 Obtain_API_Invoker_Info operation
API operation name: Obtain_API_Invoker_Info Description: Obtains the API invoker information. Known Consumers: API exposing function. Inputs: Refer subclause 8.16.2.3. Outputs: Refer subclause 8.16.2.4. See subclause 8.16.3 for the details of usage of this API operation.
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10.6.5 Revoke_Authorization operation
API operation name: Revoke_Authorization Description: Revokes API invoker authorization to access service API. Known Consumers: API exposing function. Inputs: Refer subclause 8.23.2. Outputs: Refer subclause 8.23.2. See subclause 8.23.3 for the details of usage of this API operation.
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10.6.6 Revoke_Authorization_Notify operation
API operation name: Revoke_Authorization_Notify Description: Provides to the API invoker authorization revocation information to access service API. Known Consumers: API invoker. Inputs: Refer subclause 8.23.2.3. Outputs: Refer subclause 8.23.2.4. See clauses 8.23.3 and 8.23.4 for the details of usage of this API operation.
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10.7 CAPIF_Monitoring API
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10.7.1 General
API description: This API enables the API management function to communicate with the CAPIF core function to subscribe to and unsubscribe from CAPIF events related to monitoring and receive subsequent notification of CAPIF monitoring events over CAPIF-5. NOTE: Stage 3 can decide whether the API for CAPIF_Monitoring can be enabled over CAPIF-5.
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10.7.2 Subscribe_Event operation
API operation name: Subscribe_Event Description: Provides subscription to the CAPIF related event information. Known Consumers: API management function. Inputs: Refer subclause 8.8.2.1. Outputs: Refer subclause 8.8.2.2. See subclause 8.8.3 for the details of usage of this API operation.
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10.7.3 Notify_Monitoring_Service_Event operation
API operation name: Notify_Monitoring_Service_Event Description: Provides the notification of the events related to monitoring service API invocations to the subscribed API management function. Known Consumers: API management function. Inputs: Refer subclause 8.21.2.1. Outputs: Refer subclause 8.21.2.2. See subclause 8.21.3 for the details of usage of this API operation.
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10.7.4 Unsubscribe_Event operation
API operation name: Unsubscribe_Event Description: Unsubscription to the CAPIF event information. Known Consumers: API management function. Inputs: Refer subclause 8.8.2.5. Outputs: Refer subclause 8.8.2.6. See subclause 8.8.5 for the details of usage of this API operation.
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10.7.5 Update_Event_Subscription operation
API operation name: Update_Event_Subscription Description: Updates a subscription to CAPIF related event information. Known Consumers: API management function. Inputs: Refer subclause 8.8.2.7. Outputs: Refer subclause 8.8.2.8. See subclause 8.8.5a for the details of usage of this API operation.
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10.8 CAPIF_Logging_API_Invocation API
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10.8.1 General
API description: This API enables the API exposing function to communicate with the CAPIF core function to log the information related to service API invocation over CAPIF-3. NOTE: Stage 3 can decide whether the API for CAPIF_Logging_API_Invocation can be enabled over CAPIF‑3.
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10.8.2 Log_API_Invocation operation
API operation name: Log_API_Invocation Description: Enables to log API invocation information. Known Consumers: API exposing function. Inputs: Refer subclause 8.19.2.1. Outputs: Refer subclause 8.19.2.2. See subclause 8.19.3 for the details of usage of this API operation.
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10.9 CAPIF_Auditing API
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10.9.1 General
API description: This API enables the API management function to communicate with the CAPIF core function to retrieve the log information related to service API invocation over CAPIF-5. NOTE: Stage 3 can decide whether the API for CAPIF_Auditing can be enabled over CAPIF‑5.
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10.9.2 Query_ API_Invocation_Log operation
API operation name: Query_API_Invocation_Log Description: Query the API invocation log information. Known Consumers: API management function. Inputs: Refer subclause 8.22.2.1. Outputs: Refer subclause 8.22.2.2. See subclause 8.22.3 for the details of usage of this API operation.
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10.10 CAPIF_Access_Control_Policy API
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10.10.1 General
API description: This API enables the API exposing function to obtain the policy to perform access control on the service API invocations.
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10.10.2 Obtain_Access_Control_Policy operation
API operation name: Obtain_Access_Control_Policy Description: Allows obtaining the policy to perform access control on the service API invocations. Known Consumers: API exposing function. Inputs: Refer subclause 8.12.2.1. Outputs: Refer subclause 8.12.2.2. See subclause 8.12.3 for the details of usage of this API operation.
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10.11 CAPIF_Routing_Info API
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10.11.1 General
API description: This API enables the API exposing function to obtain the routing information to forward the API invocation to another API exposing function.
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10.11.2 Obtain_Routing_Info operation
API operation name: Obtain_Routing_Info Description: Allows obtaining the API routing information. Known Consumers: API exposing function. Inputs: Refer subclause 8.27.2.1. Outputs: Refer subclause 8.27.2.2. See subclause 8.27.3 for the details of usage of this API operation.
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10.12 CAPIF_API_provider_management API
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10.12.1 General
API description: This API enables the API Management Function to communicate with the CAPIF core function to register the API provider domain functions as authorized users of the CAPIF functionalities.
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10.12.2 Register_API_Provider operation
API operation name: Register_API_Provider Description: Registers the API provider domain functions as authorized users of the CAPIF. Known Consumers: API Management Function. Inputs: Refer subclause 8.28.2.1. Outputs: Refer subclause 8.28.2.2. See subclause 8.28.3 for the details of usage of this API operation.
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10.12.3 Update_API_Provider operation
API operation name: Update_API_Provider Description: Updates registration information of the API provider domain functions. Known Consumers: API Management Function. Inputs: Refer subclause 8.29.2.1. Outputs: Refer subclause 8.29.2.2. See subclause 8.29.3 for the details of usage of this API operation.
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10.12.4 Deregister_API_Provider operation
API operation name: Deregister_API_Provider Description: De-registers the API provider domain functions on the CAPIF core function. Known Consumers: API Management Function. Inputs: Refer subclause 8.30.2.1. Outputs: Refer subclause 8.30.2.2. See subclause 8.30.3 for the details of usage of this API operation.
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10.13 CAPIF_Open_Discover_Service_API API
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10.13.1 General
API description: This API enables the API invoker to discover service API information about the available set of APIs offered by CCF before onboarding
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10.13.2 Open_Discover_Service_API operation
API operation name: Open_Discover_Service_API Description: Provides the published service APIs information before onboarding. Known Consumers: Open. Inputs: Refer subclause 8.38.2.1. Outputs: Refer subclause 8.38.2.2. See subclause 8.38.3 for the details of usage of this API operation.
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11 API exposing function APIs