Patent Application
20250181685
Embodiments disclosed herein relate generally to device management. More particularly, embodiments disclosed herein relate to systems and methods to verify ownership vouchers used during device onboarding.
Computing devices may provide computer-implemented services. The computer-implemented services may be used by users of the computing devices and/or devices operably connected to the computing devices. The computer-implemented services may be performed with hardware components such as processors, memory modules, storage devices, and communication devices. The operation of these components, and hosted entities such applications, may impact the performance of the computer-implemented services.
Embodiments disclosed herein are illustrated by way of example and not limitation in the figures of the accompanying drawings in which like references indicate similar elements.
Various embodiments will be described with reference to details discussed below, and the accompanying drawings will illustrate the various embodiments. The following description and drawings are illustrative and are not to be construed as limiting. Numerous specific details are described to provide a thorough understanding of various embodiments. However, in certain instances, well-known or conventional details are not described in order to provide a concise discussion of embodiments disclosed herein.
Reference in the specification to “one embodiment” or “an embodiment” means that a particular feature, structure, or characteristic described in conjunction with the embodiment can be included in at least one embodiment. The appearances of the phrases “in one embodiment” and “an embodiment” in various places in the specification do not necessarily all refer to the same embodiment.
References to an “operable connection” or “operably connected” means that a particular device is able to communicate with one or more other devices. The devices themselves may be directly connected to one another or may be indirectly connected to one another through any number of intermediary devices, such as in a network topology.
In general, embodiments disclosed herein relate to methods and systems for managing operation of a distributed system. To manage operation, endpoint devices, orchestrators, and/or other entities that participate in device onboarding processes may verify content of ownership vouchers using distributed ledgers.
The distributed ledgers may include information regarding transfers of ownership and/or authority over the endpoint devices. In contrast, the ownership vouchers may include information regarding the transfers that is stale, inaccurate, or only a portion of the transfers. The distributed ledgers may be used to verify the ownership vouchers prior to use, while the ownership vouchers may be used to establish cryptographically verifiable chains of delegation of authority over endpoint devices back to roots of trust of the endpoint devices.
By doing so, the endpoint devices may be less likely to be compromised during onboarding due to use of ownership vouchers during the onboarding. Thus, embodiments disclosed herein may improve the security of distributed systems by reducing the likelihood of ownership vouchers serving as avenues of attack on endpoint devices. Accordingly, embodiments disclosed herein may address, in addition to others, the problem of security in distributed systems where endpoint devices are onboarded to deployments (e.g., even in zero touch environments where destination deployments are not known when a root of trust for an endpoint device is established).
In an embodiment, a method for managing operation of an endpoint device is provided. The method may include, during an onboarding of the endpoint device to an orchestrator, obtaining, by the endpoint device, an ownership voucher usable to, at least in part, ascertain an alleged owner of the endpoint device; attempting, by the endpoint device, to verify that the alleged owner is a current owner of the endpoint device using an immutable ledger; in a first instance of the attempting where the alleged owners is verified as the current owner: continuing, by the endpoint device, performance of the onboarding to the orchestrator to join a deployment, and providing, by the endpoint device, computer implemented services as part of the deployment; and in a second instance of the attempting where the alleged owners is not verified as the current owner: discontinuing, by the endpoint device, the performance of the onboarding.
The ownership voucher may include a certificate chain documenting changes in ownership over the endpoint device.
The immutable ledger may be a distributed ledger that documents the changes in the ownership.
The ownership voucher may be generated at a past point in time.
The distributed ledger may be updated timely, and the ownership voucher may not reflect any changes in the ownership over the endpoint device past the point in time.
The method may also include, during the onboarding of the endpoint device to the orchestrator: ascertaining, by the endpoint device and using the ownership voucher, whether the alleged owner of the endpoint device has delegated authority over the endpoint device to the orchestrator; and in an instance of the ascertaining where the alleged owner of the endpoint device has not delegated authority over the endpoint device: discontinuing, by the endpoint device, the performance of the onboarding.
The immutable ledger and the ownership voucher may be maintained, in part, by a voucher management system.
Attempting, by the endpoint device, to verify that the alleged owner is the current owner of the endpoint device using the immutable ledger may include obtaining, using a cached portion of the immutable ledger, immutable transfers for the endpoint device; time ordering the immutable transfers to obtain time ordered transfers; and identifying the current owner using the time ordered transfers.
Attempting, by the endpoint device, to verify that the alleged owner is the current owner of the endpoint device using the immutable ledger may include obtaining, from voting nodes that participate in management of the immutable ledger, votes regarding the current owner of the endpoint device; and identifying the current owner using the votes.
Attempting, by the endpoint device, to verify that the alleged owner is the current owner of the endpoint device using the immutable ledger may include obtaining, from a trusted quorum, an attestation regarding the current owner of the endpoint device; and identifying the current owner using the votes.
In an embodiment, a non-transitory media is provided. The non-transitory media may include instructions that when executed by a processor cause the computer-implemented method to be performed.
In an embodiment, a data processing system is provided. The data processing system may include the non-transitory media and a processor, and may perform the method when the computer instructions are executed by the processor.
Turning to
To provide the computer implemented services, any number of endpoint devices may be deployed to a deployment. The endpoint devices may cooperatively provide the computer implemented services.
To manage the endpoint devices to provide the computer implemented services, authority over the endpoint devices may need to be established. In other words, the endpoint devices must be able to ascertain that they are under the authority of a particular entity. Based on this authority, the entity may, for example, issue work orders and/or other types of instructions to manage the operation of the endpoint devices to provide desired computer implemented services.
To facilitate ascertaining of the authority over them, the endpoint devices may utilize secrets. The secrets may allow the endpoint devices to cryptographically verify delegations of authority over the endpoint devices from a root of trust (e.g., a trusted key of a manufacturer) to another entity (e.g., an owner).
Overtime the resources requirements for providing computer implemented services may change and/or endpoint devices may need to be replaced. For example, additional services may be desired to be provided, different types of services may be desired to be provided, etc. In another example, an endpoint device that contributed to the computer implemented services may cease to operate thereby reducing the quantity of resources available to provide the computer implemented services. To satisfy the resource requirements based on these changes to an exist systems, additional endpoint devices may be onboarded and thereby contribute to the resources available to provide the computer implemented services.
During operation, the endpoint devices may be managed by a management entity such as an orchestrator. The orchestrator may instruct the endpoint devices to perform various actions. However, if the orchestrator is compromised, then the endpoint devices may also be compromised by virtue of the control that the compromised orchestrator has over the endpoint devices. Further, if onboarded to a malicious orchestrator, then the endpoint devices may be directly compromised.
In general, embodiments disclosed herein may provide methods, systems, and/or devices for managing security of endpoint devices to reduce the likelihood of the endpoint devices being compromised. To manage the security of such deployments, embodiments disclosed herein may provide a framework for establishing trust between orchestrators and endpoint devices.
To establish such trust, endpoint devices and orchestrators may utilize a combination of cryptographically verifiable ownership vouchers that establish delegations of authority over endpoint devices, and distributed immutable ledgers that track when such delegations are made. The combination of both ownership vouchers for cryptographic verification of delegation and distributed immutable ledgers for tracking delegations may reduce the likelihood of endpoint devices and/or orchestrators establishing unwarranted trust in other devices.
For example, an owner of a device may delegate authority over the device to multiple other entities. Such information may be verifiable and added to different ownership vouchers. Thus, use of ownership vouchers alone may be insufficient to identify a current owner (or delegate of authority) of a device. The distributed immutable ledger may be usable to ascertain whether an ownership voucher includes up to date information, stale information, etc.
By doing so, embodiments disclosed herein may improve the security of distributed systems by facilitating verification of trust in components of the system. Consequently, entities may be less likely to be compromised during onboarding procedures. Thus, malicious activity may be more likely to be constrained and/or prevent until the root cause for the malicious activity is addressed.
To provide the above noted functionality, the system of
Manufacturer system 100 may be a system used by a manufacturer of endpoint devices 102. Manufacturer system 100 may include, for example, factories, assembly plants, distribution facilities, and/or other types of facilities for creating endpoint devices 102. Endpoint devices 102 may be data processing systems which may be usable to provide various computer implemented services.
When manufactured, manufacturer system 100 may put endpoint devices 102 in condition for subsequent onboarding to various deployments (e.g., 130) and/or other environments (e.g., data centers, edge systems, etc.) in which endpoint devices may be positioned to provide desired computer implemented services.
To place endpoint device 102 in condition for subsequent onboarding, manufacturer system 100 may (i) establish a root of trust for each endpoint device, (ii) record various information regarding the endpoint devices (e.g., hardware/software loadout, identifiers of various components positioned therein, etc.), and (iii) install various pieces of software, establish various configuration settings, update various hardware components, and/or perform other actions so that only entities to which authority over the endpoint devices has been delegated from the root of trust are able to control and/or otherwise use the endpoint device. Refer to
Once constructed, endpoint devices 102 may be sold directly to end users and/or placed into the stream of commerce (e.g., sold to resellers, etc.) and through which endpoint devices 102 eventually reach end users. The intermediate owners may make modifications to the hardware and/or software of the endpoint devices. Refer to
As ownership over the endpoint devices changes, information regarding the changes in ownership and/or authority may be recorded in an ownership voucher. The ownership voucher may allow an end user to establish authority over the endpoint device such that the endpoint device will be usable by the end user.
Additionally, changes in ownership and/or authority may be recorded in a distributed immutable ledger. The distributed immutable ledger may be implemented using blockchain technology, or other technology and may use any system (e.g., proof of work, proof of stake, etc.) for appending information to the distributed immutable ledger. Any number of devices (not shown independently, may be hosted by components not shown in
Voucher management system 110 may document and manage information regarding changes in ownership and authority over endpoint devices 102. To do so, voucher management system 110 may generate ownership vouchers, and initiate adding of information to the distributed immutable ledger (e.g., the distributed immutable ledger may be maintained using a framework that may enable voucher management system 110 to initiate addition of information to it). An ownership voucher may be a cryptographically verifiable data structure usable to establish which entities have authority over endpoint devices 102.
For example, an ownership voucher may include certificate chains that documents the changes in ownership and authority over endpoint devices 102. Each certificate may be signed using various keys. The keys used to sign (e.g., private keys) and keys included in (e.g., public keys) in ownership vouchers may enable endpoint devices to ascertain whether to trust various data structures, such as work orders which may be signed. Refer to
In contrast to the ownership vouchers, the distributed ledger may include information usable to verify the accuracy of information included in ownership vouchers. For example, the information may include descriptions of delegations of authority/ownership over endpoint devices. In an embodiment, the information includes hashes or other output of other types of one-way function (or other types of functions) after ingesting such descriptions of the delegations. Consequently, the content of the distributed immutable ledger may be usable to verify content of an ownership voucher (e.g., the corresponding delegations in the ownership voucher may be used as input to the one-way function and the distributed immutable ledger may be searched for a matching output) but may not be usable to ascertain the delegations/changes in ownership that have occurred (e.g., because the one-way function may not be generally reversed to obtain the input used to generate the output that is included in the distributed immutable ledger).
Thus, when an ownership voucher is obtained, the accuracy of the information in the ownership voucher may also be independently verified (e.g., in addition to cryptographic verification used to check integrity of the content of the ownership voucher) using the distributed immutable ledger.
When one of endpoint devices 102 is obtained by an end user, the end user may add the endpoint devices to a collection such as deployment 130. When so added, an orchestrator (e.g., 132) or other entity may utilize a corresponding ownership voucher from voucher management system 110 to establish authority over the endpoint device. In this manner, any number of endpoint devices (e.g., 134) may be onboarded and brought under the control of a control plane which may include any number of orchestrators (e.g., 132). Different endpoint devices (e.g., 136, 138) may be onboarded at different points in time and/or for different purposes.
When one of endpoint devices 102 initially powers on after manufacturing and prior to onboarding, the endpoint device may reach out to rendezvous system 120. Rendezvous system 120 may be a system that directs endpoint devices to entities such as orchestrator 132 that will onboard the endpoint devices.
To do so, the entities such as orchestrator 132 may provide rendezvous system 120 with information usable to authenticate that orchestrator 132 will manage the endpoint devices. For example, orchestrator 132 may provide information from ownership and/or other sources to rendezvous system 120. Once verified, rendezvous system 120 may redirect endpoint devices to the corresponding entities when the endpoint devices reach out to rendezvous system 120 after being powered on.
Once directed to orchestrator 132, new endpoint devices (e.g., 102) may obtain and/or verify ownership vouchers that allege to indicate that authority over them has been delegated to orchestrator 132 (and/or an owner/operator of orchestrator 132). During the verification, integrity of the ownership vouchers may be cryptographically verified, and the content (and/or other information) may be checked to ascertain whether orchestrator 132 has been delegated authority over the new endpoint devices. Additionally, the distributed immutable ledger (or information from it) may be checked to ascertain whether the ownership voucher includes inaccurate information or other information indicating that the ownership voucher should not be trusted. For example, the distributed immutable ledger may be checked to verify that the information in the ownership voucher isn't stale (e.g., additional delegations may occur after an ownership voucher has been generated) and/or contradictory delegations (e.g., a single entity delegating authority over an endpoint device to two different entities that are entitled to have sole authority over the endpoint device) have not been made over time. Refer to
If successfully verified as being trustworthy, then the endpoint device (and a corresponding orchestrator, which may perform similar procedures to verify copies of the ownership voucher prior to participating in onboarding) and orchestrator may proceed to complete the onboarding. During the onboarding, endpoint devices 134 may perform various operations to complete onboarding. The operations may include any number and type of operation (e.g., configuration operations, security operations, software installation operations, account establishment operations, etc.), and the operations may be directed by orchestrator 132. Once onboarded, the endpoint devices may begin to contribute to computer implemented services provided by deployment 130.
When providing their functionality, any of manufacturer system 100, endpoint devices 102, voucher management system 110, rendezvous system 120, deployment 130, orchestrator 132, and/or endpoint devices 134 may perform all, or a portion, of the processes, interactions, and methods illustrated in
Any of manufacturer system 100, endpoint devices 102, voucher management system 110, rendezvous system 120, deployment 130, orchestrator 132, and endpoint devices 134 may be implemented using a computing device (also referred to as a data processing system) such as a host or a server, a personal computer (e.g., desktops, laptops, and tablets), a “thin” client, a personal digital assistant (PDA), a Web enabled appliance, a mobile phone (e.g., Smartphone), and edge device, an embedded system, local controllers, an edge node, and/or any other type of data processing device or system. For additional details regarding computing devices, refer to
Any of the components illustrated in
While illustrated in
As discussed above, endpoint devices (e.g., 102) may traverse through a stream of commerce between when the endpoint devices are manufactured and when the endpoint devices reaches a final owner. Turning to
In
The stream of commerce may begin, for example, at manufacturer facility 150. Manufacturer facility 150 may be a facility operated by a manufacturer of endpoint devices. During manufacturing, the manufacturer may establish a root of trust for an endpoint device (e.g., 103), install various software, add hardware components, etc. Refer to
Once the root of trust is established, endpoint device 103 may be sold and resold to various intermediate owners. These intermediate owners may operate various intermediate owner facilities (e.g., 152), such as warehouses, distribution centers, sales rooms, etc. When sold, endpoint device 103 may be shipped to these various facilities. While at these facilities, various software and/or hardware component modifications may be made. Accordingly, the state of endpoint devices 103 may change.
Finally, once purchased from an intermediate owner, a final owner may operate a final owner facility (e.g., 154), such as a data center, edge deployment, and/or other type of computer deployment to which endpoint device 103 may be onboarded. To facilitate onboarding, voucher management system 110 may collect and add information regarding changes in ownership of endpoint device 103 to an ownership voucher. Orchestrator 132 may use the ownership voucher to establish authority over endpoint device 103.
However, as will be discussed below, because authority and/or ownership over an endpoint device may be established using certificate chains in an ownership voucher and keys used to create the certificates may be compromised (e.g., or the controller of the keys may themselves act maliciously), ownership vouchers on their own may not indicate all of the delegations that have been made. Thus, the information in an ownership voucher may be out of date and/or may only include limited information about such delegations. Malicious entities may use such short comings to create and/or use ownership vouchers for malicious purposes.
Turning to
Root of trust 160 may be a public key of a public private key pair controlled by the manufacturer of endpoint device 103. The public private key pair may be established using any process.
To install root of trust 160, root of trust 160 may be stored in endpoint device 103. The storage location and security precautions taken with respect to storing root of trust 160 may vary depending on the architecture of endpoint device 103.
For example, endpoint device 103 may host or include a security manager (e.g., 162). Security manager 162 may be implemented using a discrete hardware component (e.g., a trusted platform module), or may be a software component. Security manager 162 may enforce various security policies on endpoint device 103. For example, the security policies may require that endpoint device 103 validate authority over it back to root of trust 160 before complying with any instructions from other entities that allege to have authority over endpoint device 103.
To validate entities having authority over endpoint device 103, endpoint device 103 may utilize ownership vouchers.
Turning to
To add a certificate to ownership voucher 176, transfer process 174 may be performed. During transfer process 174, ownership transfer data 170 and private key 172 may be obtained. Ownership transfer data 170 may document a change in ownership and/or authority over an endpoint device. For example, when an endpoint device is sold, a public key of a public private key pair controlled by the purchaser may be added to ownership transfer data 170, along with other types of information regarding the transfer. This public key may be usable to verify signed work orders or other signed data structures from the new owner (e.g., the new owner may be able to use the corresponding private key for signing). The information in ownership transfer data 170 may be treated as a delegation statement, which an endpoint device may parse to identify entities having authority over it.
Private key 172 may be a private key of a public private key pair controlled by an entity that has authority over an endpoint device at the time authority over the endpoint device changes (e.g., via sale or other mechanism). In a scenario in which the manufacturer is the seller, the private key corresponding to the root of trust may be private key 172. Similarly, in a scenario in which an intermediate owner is the seller, private key 172 may be the private corresponding to the public key included in the delegation statement in ownership voucher 176 that establishes the intermediate owner has the owner of the endpoint device. In other words, to establish a delegation of authority, the entity that has authority over the endpoint device as defined by the certificates of ownership voucher 176 may need to sign the ownership transfer data 170 to further delegate ownership and authority over the endpoint device. By doing so, a chain of delegations that are cryptographically verifiable back to the root of trust may be established. Refer to
Any number of certificates may be added to ownership voucher 176 thereby enabling certificate chains that establish chains of delegation from the root of trust for an endpoint device. Ownership voucher 176 may, as discussed above, be used during onboarding.
In addition to adding certificates, when a transfer is identified (e.g., via transfer process 174), ledger management process 173 may be performed to update the distributed immutable ledger based on the transfer. Ledger management process 173 may include initiating adding (e.g., an update) information regarding the transfer to distributed ledger 220 (e.g., which may be immutable). For example, ledger management process 173 may utilize a framework (e.g., blockchain, other protocol, etc.) to add information regarding the transfer to distributed ledger 220. The information may include (i) the transfer, (ii) a hash of the transfer (or other type of data structure that conceals base information, such as encryption), (iii) timestamps or other information usable to temporally order transfers appended to distributed ledger 220, and/or other information regarding the transfers to enable a current owner/entities with authority over the endpoint device to be identified and/or to verify content of ownership vouchers.
Turning to
Delegation 179A may include information documenting a delegation of authority/ownership over an endpoint device. For example, delegation 179A may include a public key, and indicate what is delegated to the entity that has control over the public private key pair of which the public key is a member. The extent of what is delegated may be specified at a macro level (e.g., ownership) or a micro level (e.g., limited authority).
Cryptographic data 179B may include signature usable to verify the integrity of delegation 179A and ascertain whether delegation 179A is valid.
To determine whether certificate 178 includes a valid delegation, an endpoint device may attempt to establish a chain of delegations back to the root of trust.
Turning to
Turning to
As seen, certificate 184 may include delegation 185 which includes a public key (e.g., 186) of a second entity. The delegation statement may indicate that a first entity is delegating authority to the second entity.
Certificate 184 may include signature 187. Signature 187 may be generated using a private key controlled by the first entity that delegated authority to the second entity. In this example, the private key may correspond to root of trust 160 (e.g., may be a private corresponding to the public key installed when an endpoint device is manufactured).
To establish a certificate chain, signature 187 may be checked using root of trust 160. If verified as having been signed using the private key corresponding to the root of trust, then certificate 184 may be treated as being valid.
Like certificate 184, certificate 188 may include delegation 189 which includes a public key (e.g., 190) of a third entity, and in this example the owner. The delegation statement of delegation 189 may indicate that the second entity is delegating authority to the third entity (i.e., the owner).
Certificate 188 may include signature 191. Signature 91 may be generated using a private key controlled by the second entity that delegated authority to the third entity. In this example, the private key may correspond to the public key (e.g., 186) of the second entity which may be included in delegation 185.
To extend the certificate chain, signature 191 may be checked using a public key managed by second entity 186. If verified as having been signed using the private key corresponding to public key managed by second entity 186, then certificate 188 may be treated as being valid.
Once the chain is established, the delegations (e.g., 185, 189) in the chain may be parsed to identify keys to which authority has been delegated from root of trust 160. These public key may then be used to decide whether various work orders are valid, which entities have authority of an endpoint device, and/or for other purposes.
For example, during onboarding, an endpoint device may evaluate whether to perform various work orders using the keys to which authority has been delegated.
Additionally, the content of the ownership voucher may be checked using the distributed immutable ledger, refer to
Turning to
When a work order (e.g., 196) is received by an endpoint device, the endpoint device may evaluate whether the entity issuing the work order has authority over the endpoint device. To do so, the endpoint device may parse the certificates (of an ownership voucher that has been verified to be trustworthy using the distributed immutable ledger) to identify the public keys to which authority over the endpoint device has been delegated.
The endpoint device may then, using the keys, check a signature (e.g., 198) included in the work order. If the signature can be verified as having been generated using the private key corresponding to one of the public keys to which authority over the endpoint device has been delegated, then the endpoint device may treat work order 196 as having been issued by an entity with authority over it. For example, signature 198 may be checked using a public key managed by owner entity 190, in this example.
The endpoint device may then, for example, process various statements 197 included in work order 196, and take action based on those statements. These statements may include instructions that change the manner of operation of the endpoint device to, for example, comply with security requirements of a new owner, and/or perform other actions.
Turning to
When transfers are identified as being valid (e.g., using a consensus protocol, or other type of scheme used to restrict additions of information to distributed ledger 220), corresponding immutable transfers (e.g., 224-226). Any number of such immutable transfers 222 may be stored in distributed ledger 220.
Each immutable transfer recorded in distributed ledger 220 may be stored in an immutable manner (e.g., unchangeable without the changes being identifiable). The recorded transfers may include information regarding the transfers, as discussed above.
Any number of entities may maintain copies of distributed ledger 220, and the content may be maintained using a distributed algorithm (e.g., proof of trust, proof of stake, etc.) to ensure that content of distributed ledger 220 is accurate.
As will be discussed below, distributed ledger 220 may be used to check the content of ownership vouchers prior to use.
To further clarify embodiments disclosed herein, interactions diagrams in accordance with an embodiment are shown in
In the interaction diagrams, processes performed by and interactions between components of a system in accordance with an embodiment are shown. In the diagrams, components of the system are illustrated using a first set of shapes (e.g., 110, 120, 132, 136, etc.), located towards the top of each figure. Lines descend from these shapes. Some descending lines are drawn in dashing to indicate that the device is not operating during corresponding periods of time, while other lines are drawn solid to indicate that the devices are operating during the corresponding period of time. For example, in
Processes performed by the components of the system are illustrated using a second set of shapes (e.g., 242, 254, etc.) superimposed over these lines. Interactions (e.g., communication, data transmissions, etc.) between the components of the system are illustrated using a third set of shapes (e.g., 240, 244, etc.) that extend between the lines. The third set of shapes may include lines terminating in one or two arrows. Lines terminating in a single arrow may indicate that one way interactions (e.g., data transmission from a first component to a second component) occur, while lines terminating in two arrows may indicate that multi-way interactions (e.g., data transmission between two components) occur.
Generally, the processes and interactions are temporally ordered in an example order, with time increasing from the top to the bottom of each page. For example, the interaction labeled as 240 may occur prior to the interaction labeled as 244. However, it will be appreciated that the processes and interactions may be performed in different orders, any may be omitted, and other processes or interactions may be performed without departing from embodiments disclosed herein.
Turning to
To onboard endpoint device 136, orchestrator 132 may, at interaction 240, send a voucher request to voucher management system 110. The voucher request may be a request for an ownership voucher for an endpoint device (e.g., 136). In the example interactions shown in
When received, voucher management system 110 may attempt to validate the voucher request by performing validation process 242. During validation process, credentials and/or other information from orchestrator 132 may be evaluated to ascertain whether an ownership voucher should be provided. Presuming that the validation process is successful, at interaction 244, voucher management system 110 may send an ownership voucher to orchestrator 132.
Once obtained, at interaction 248, orchestrator 132 may send a registration request to rendezvous system 120. The registration request may be a request to have rendezvous system 120 redirect endpoint device 136 to orchestrator 132. The registration request may include information usable by rendezvous system 120 to verify that orchestrator 132 should have authority over endpoint device 136 (e.g., may be portions of the ownership voucher, or entire ownership voucher).
Once endpoint device 136 reaches a destination location (e.g., a data center, edge deployment, etc.), endpoint device 136 may be powered on and may, at interaction 250, send a request to rendezvous system 120 regarding which entity to contact as part of an onboarding procedure.
Presuming the rendezvous system 120 registered orchestrator 132 based on the registration request, rendezvous system may, at interaction 252, provide onboarding data to endpoint device 136. The onboarding data may include, for example, various validation information and re-direct information (e.g., network address) for orchestrator 132.
Once obtained, endpoint device 136 may perform validation process 254. During validation process 254, endpoint device 136 may attempt to validate the onboarding data. If successfully validated, endpoint device 136 may, at interaction 256, generate and send an onboarding request to orchestrator 132. The onboarding request may request, for example, cryptographic data such as ownership vouchers.
Sending of the onboarding request may initiate performance of onboarding process 258. During the onboarding process, orchestrator 132 and/or endpoint device 136 may attempt to validate a corresponding ownership voucher using a distributed immutable ledger. For example, the content of the ownership voucher may be verified using the distributed immutable ledger.
Presuming that the ownership voucher is successfully verified using the distributed immutable ledger, endpoint device 136 may attempt to ascertain whether orchestrator 132 has authority over endpoint device 136. To do so, endpoint device 136 may, as discussed above, attempt to validate certificate chains and delegation statements of the ownership voucher to establish a chain of delegation of authority from the root of trust to orchestrator 132 (e.g., the delegation statements may identify a particular public key for which orchestrator 132 controls a corresponding private key). Endpoint device 136 may issue various challenges (e.g., signing challenges) to orchestrator 132, and endpoint device 136 may test the signed responses to the challenges using the particular public key. If the signed responses can be validated using the public key, then endpoint device 136 may conclude that orchestrator 132 has authority over it.
If successfully validated as having authority over it, endpoint device 136 may continue to participate in the onboarding by, for example, evaluating the trustworthiness of signed work orders issued by orchestrator 132, and complying with any signed work orders that can be validated as having been signed with the private key corresponding to the particular public key. While described above as verifying authority using the onboarding voucher after validating the ownership voucher content, the content of the ownership voucher may be validated first and/or in parallel. Refer to
Returning to the discussion of
Turning to
To manage endpoint device 136, orchestrator 132 may perform management process 270. During management process 270, orchestrator 132 may create a request for work to be performed by endpoint device 136. The request may be created to accomplish goals (e.g., provide certain services), manage security/power consumption/other aspects of operation of endpoint device 136, and/or for other purposes. The request may be signed using a key managed by orchestrator 132 and/or by another entity that has authority over endpoint device 136.
Once the request is obtained, at interaction 272, orchestrator 132 may provide the request to endpoint device 136.
Once obtained, endpoint device 136 may perform validation process 274. During validation process 274, endpoint device 136 may attempt to validate the request. To do so, endpoint device 136 may attempt to verify a signature of the request (e.g., that authority over endpoint device 136 has been delegated to an entity that manages the key used to sign the request). For example, endpoint device 136 may check to see if a certificate chain between the signature of the request to a root of trust can be established (e.g., as discussed with respect to
If successfully validated, endpoint device 136 may perform updating process 276. During updating process 276, endpoint device 136 may perform actions to fulfill the request to update its operation. Any number of actions may be performed based on the content of the request.
Any of the processes illustrated using the second set of shapes and interactions illustrated using the third set of shapes may be performed, in part or whole, by digital processors (e.g., central processors, processor cores, etc.) that execute corresponding instructions (e.g., computer code/software). Execution of the instructions may cause the digital processors to initiate performance of the processes. Any portions of the processes may be performed by the digital processors and/or other devices. For example, executing the instructions may cause the digital processors to perform actions that directly contribute to performance of the processes, and/or indirectly contribute to performance of the processes by causing (e.g., initiating) other hardware components to perform actions that directly contribute to the performance of the processes.
Any of the processes illustrated using the second set of shapes and interactions illustrated using the third set of shapes may be performed, in part or whole, by special purpose hardware components such as digital signal processors, application specific integrated circuits, programmable gate arrays, graphics processing units, data processing units, and/or other types of hardware components. These special purpose hardware components may include circuitry and/or semiconductor devices adapted to perform the processes. For example, any of the special purpose hardware components may be implemented using complementary metal-oxide semiconductor based devices (e.g., computer chips).
Any of the processes and interactions may be implemented using any type and number of data structures. The data structures may be implemented using, for example, tables, lists, linked lists, unstructured data, data bases, and/or other types of data structures. Additionally, while described as including particular information, it will be appreciated that any of the data structures may include additional, less, and/or different information from that described above. The informational content of any of the data structures may be divided across any number of data structures, may be integrated with other types of information, and/or may be stored in any location.
To further clarify embodiments disclosed herein, a data flow diagram in accordance with an embodiment is shown in
Turning to
To attempt to verify ownership vouchers, verification process 282 may be performed. During verification process 282, the content of ownership voucher 176 may be checked against information regarding transfers of ownership and/or authority over an endpoint device. The information may be checked against various sources of information including, for example, distributed ledger 220, portion of distributed ledger 290 and/or votes 292.
Distributed ledger 220, as discussed above, may include records of transfers regarding ownership and/or authority of an endpoint device. For example, the content (e.g., delegation statements) of certificates of ownership voucher 176 may be checked to see (i) whether similar transfers are recorded in distributed ledger 220, (ii) whether a temporal ordering of the transfers match the order of delegations in the certificates, and/or (iii) whether other information from distributed ledger 220 indicates that ownership voucher 176 should not be used. The other information may include, for example, other transfers beyond those reflected in the certificates of ownership voucher 176. If such transfers are present in distributed ledger 220, then ownership voucher 176 may be stale and/or may not properly indicate an actual owner and/or entity that has authority over the endpoint device. Likewise, if the temporal ordering of the transfers does not match the delegation chains established by the certificates of ownership voucher 176, then the content of ownership voucher 176 may not be trustworthy and/or otherwise should not be used.
In scenarios in which endpoint devices are separated from distributed ledger (e.g., positioned at an air-gapped site thereby preventing communication with entities that have copies of distributed ledger 220), then portion of distributed ledger 290 may be used. Portion of distributed ledger 290 may be a snapshot of distributed ledger 220, and may be maintained by a device in the air-gapped site such that the endpoint devices may be able to communicate with it and gain access to portion of distributed ledger 290.
If, for other reasons, distributed ledger 220 is unreachable, then votes 292 may be used to verify ownership voucher 176. Votes 292 may be data structures from entities that maintain distributed ledger 220, and that indicate whether ownership voucher 176 (or content thereof) is valid. Votes 292 may be obtained, for example, by sending requests to the entities that maintain distributed ledger 220. In some cases, a distributed ledger 220 may not be maintained, but the entities that would otherwise maintain it may instead act as voting entities to come to consensus decisions regarding content of ownership voucher 176 based on their respective available information.
Using the aforementioned information, a determination regarding whether to use ownership voucher 176 may be made (e.g., verification outcome 284).
Once obtained, verification outcome 284 may be used to ascertain whether to perform onboarding processes.
The data flow shown in
Any of the processes illustrated using the second set of shapes may be performed, in part or whole, by digital processors (e.g., central processors, processor cores, etc.) that execute corresponding instructions (e.g., computer code/software). Execution of the instructions may cause the digital processors to initiate performance of the processes. Any portions of the processes may be performed by the digital processors and/or other devices. For example, executing the instructions may cause the digital processors to perform actions that directly contribute to performance of the processes, and/or indirectly contribute to performance of the processes by causing (e.g., initiating) other hardware components to perform actions that directly contribute to the performance of the processes.
Any of the processes illustrated using the second set of shapes may be performed, in part or whole, by special purpose hardware components such as digital signal processors, application specific integrated circuits, programmable gate arrays, graphics processing units, data processing units, and/or other types of hardware components. These special purpose hardware components may include circuitry and/or semiconductor devices adapted to perform the processes. For example, any of the special purpose hardware components may be implemented using complementary metal-oxide semiconductor based devices (e.g., computer chips).
Any of the data structures illustrated using the first and third set of shapes may be implemented using any type and number of data structures. Additionally, while described as including particular information, it will be appreciated that any of the data structures may include additional, less, and/or different information from that described above. The informational content of any of the data structures may be divided across any number of data structures, may be integrated with other types of information, and/or may be stored in any location.
Thus, the flow, processes, and interactions shown in
As discussed above, the components of
Turning to
Prior to operation 300, an endpoint device may be shipped to a deployment or other facility maintained by an owner. The endpoint device may have been purchased by the owner.
At operation 300, an ownership voucher usable to, at least in part, ascertain an alleged owner of an endpoint device. The ownership voucher may be obtained from a voucher manager, a rendezvous, an orchestrator of the deployment, or from another entity.
At operation 302, an attempt to verify that the alleged owner is a current owner of the endpoint device may be made using an immutable ledger. The attempt may be made by (i) using a cached portion of an immutable ledger maintained by a device of the deployment while the deployment is air-gapped from other entities that maintain the immutable ledger, (ii) using votes obtained from entities that would otherwise maintain the immutable ledger, (iii) using an attestation from a quorum of entities that would otherwise maintain the immutable ledger, and/or using the immutable ledger itself.
If the cached portion is used, relevant transfers may be obtained and time-ordered. The time-ordered transfers may then be compared to certificates of the ownership voucher to ascertain whether similar transfers are present. If additional transfers and/or different orders are present, then it may be concluded that the ownership voucher cannot be verified.
If the immutable ledger is used, relevant transfers may be obtained and time-ordered. The time-ordered transfers may then be compared to certificates of the ownership voucher to ascertain whether similar transfers are present. If additional transfers and/or different orders are present, then it may be concluded that the ownership voucher cannot be verified.
If the votes are used, information regarding the ownership voucher may be sent to the entities and corresponding votes regarding validity of the information content of the sent information may be received. The votes may then be tallied and used to conclude whether the ownership voucher can be verified (e.g., may be a simple majority for verification, may require a super majority, may require unanimous agreement, or other criteria may be used to ascertain whether the votes indicate that the ownership voucher can be verified).
If the attestation is used, information regarding the ownership voucher may be sent to the entities of the quorum (e.g., a majority of entities that maintain the immutable ledger) and a corresponding certificate may be received (e.g., the entities of the quorum may vote and use criteria). The attestation may indicate whether the ownership voucher can be verified.
In a scenario in which the immutable ledger, or portion thereof, is used and the immutable ledger includes privacy mechanisms such as storing hashes of transfers rather than the transfers themselves, the immutable ledger may be searched by (i) generating hashes of delegations (e.g., “from owner A to owner B) from the certificates of the ownership voucher, and (ii) searching the immutable ledger for the hashes. If not all of the hashes are found and/or are found in different time orders than the delegations, then it may be concluded that the ownership voucher cannot be verified. It will be appreciated that the hashing process may only hash certain parts of transfers rather than all of the transfers in the immutable ledger if the immutable ledger includes records that follow similar anonymization schemes.
At operation 304, a determination is made regarding whether the alleged owner is verified as the current owner. The alleged owner may be identified by parsing the certificate chain of the ownership voucher to find the last entity to which authority of the endpoint device has been delegated. The immutable ledger may then be analyzed, as discussed with respect to operation 302, to identify whether a similar owner is identified. If the alleged and identified owner of the endpoint device match, then the alleged owner may be verified as the current owner.
If the alleged owner is verified as the current owner, then the method may proceed to operation 306. Otherwise the method may proceed to operation 310.
At operation 306, performance of the onboarding to join a deployment may be continued. In other words, the onboarding process may be paused during operations 300-304 until it is determined whether the alleged owner from the ownership voucher is verified as the current owner using the immutable ledger. The determination may indicate whether the ownership voucher is trustworthy or should otherwise be used.
At operation 308, computer implemented services may be provided by a now-onboarded endpoint device that has joined a deployment as part of the deployment. The computer implemented services may be any type of service.
The method may end following operation 308.
Returning to operation 304, the method may proceed to operation 310 following operation 304 if it is determined that the alleged owner cannot be verified to be the current owner.
At operation 310, performance of the onboarding may be discontinued.
The method may end following operation 310.
Thus, using the method shown in
Any of the components illustrated in
In one embodiment, system 400 includes processor 401, memory 403, and devices 405-407 via a bus or an interconnect 420. Processor 401 may represent a single processor or multiple processors with a single processor core or multiple processor cores included therein. Processor 401 may represent one or more general-purpose processors such as a microprocessor, a central processing unit (CPU), or the like. More particularly, processor 401 may be a complex instruction set computing (CISC) microprocessor, reduced instruction set computing (RISC) microprocessor, very long instruction word (VLIW) microprocessor, or processor implementing other instruction sets, or processors implementing a combination of instruction sets. Processor 401 may also be one or more special-purpose processors such as an application specific integrated circuit (ASIC), a cellular or baseband processor, a field programmable gate array (FPGA), a digital signal processor (DSP), a network processor, a graphics processor, a network processor, a communications processor, a cryptographic processor, a co-processor, an embedded processor, or any other type of logic capable of processing instructions.
Processor 401, which may be a low power multi-core processor socket such as an ultra-low voltage processor, may act as a main processing unit and central hub for communication with the various components of the system. Such processor can be implemented as a system on chip (SoC). Processor 401 is configured to execute instructions for performing the operations discussed herein. System 400 may further include a graphics interface that communicates with optional graphics subsystem 404, which may include a display controller, a graphics processor, and/or a display device.
Processor 401 may communicate with memory 403, which in one embodiment can be implemented via multiple memory devices to provide for a given amount of system memory. Memory 403 may include one or more volatile storage (or memory) devices such as random access memory (RAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), static RAM (SRAM), or other types of storage devices. Memory 403 may store information including sequences of instructions that are executed by processor 401, or any other device. For example, executable code and/or data of a variety of operating systems, device drivers, firmware (e.g., input output basic system or BIOS), and/or applications can be loaded in memory 403 and executed by processor 401. An operating system can be any kind of operating systems, such as, for example, Windows® operating system from Microsoft®, Mac OS®/iOS® from Apple, Android® from Google®, Linux®, Unix®, or other real-time or embedded operating systems such as VxWorks.
System 400 may further include IO devices such as devices (e.g., 405, 406, 407, 408) including network interface device(s) 405, optional input device(s) 406, and other optional IO device(s) 407. Network interface device(s) 405 may include a wireless transceiver and/or a network interface card (NIC). The wireless transceiver may be a WiFi transceiver, an infrared transceiver, a Bluetooth transceiver, a WiMax transceiver, a wireless cellular telephony transceiver, a satellite transceiver (e.g., a global positioning system (GPS) transceiver), or other radio frequency (RF) transceivers, or a combination thereof. The NIC may be an Ethernet card.
Input device(s) 406 may include a mouse, a touch pad, a touch sensitive screen (which may be integrated with a display device of optional graphics subsystem 404), a pointer device such as a stylus, and/or a keyboard (e.g., physical keyboard or a virtual keyboard displayed as part of a touch sensitive screen). For example, input device(s) 406 may include a touch screen controller coupled to a touch screen. The touch screen and touch screen controller can, for example, detect contact and movement or break thereof using any of a plurality of touch sensitivity technologies, including but not limited to capacitive, resistive, infrared, and surface acoustic wave technologies, as well as other proximity sensor arrays or other elements for determining one or more points of contact with the touch screen.
IO devices 407 may include an audio device. An audio device may include a speaker and/or a microphone to facilitate voice-enabled functions, such as voice recognition, voice replication, digital recording, and/or telephony functions. Other IO devices 407 may further include universal serial bus (USB) port(s), parallel port(s), serial port(s), a printer, a network interface, a bus bridge (e.g., a PCI-PCI bridge), sensor(s) (e.g., a motion sensor such as an accelerometer, gyroscope, a magnetometer, a light sensor, compass, a proximity sensor, etc.), or a combination thereof. IO device(s) 407 may further include an imaging processing subsystem (e.g., a camera), which may include an optical sensor, such as a charged coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS) optical sensor, utilized to facilitate camera functions, such as recording photographs and video clips. Certain sensors may be coupled to interconnect 420 via a sensor hub (not shown), while other devices such as a keyboard or thermal sensor may be controlled by an embedded controller (not shown), dependent upon the specific configuration or design of system 400.
To provide for persistent storage of information such as data, applications, one or more operating systems and so forth, a mass storage (not shown) may also couple to processor 401. In various embodiments, to enable a thinner and lighter system design as well as to improve system responsiveness, this mass storage may be implemented via a solid state device (SSD). However, in other embodiments, the mass storage may primarily be implemented using a hard disk drive (HDD) with a smaller amount of SSD storage to act as an SSD cache to enable non-volatile storage of context state and other such information during power down events so that a fast power up can occur on re-initiation of system activities. Also a flash device may be coupled to processor 401, e.g., via a serial peripheral interface (SPI). This flash device may provide for non-volatile storage of system software, including a basic input/output software (BIOS) as well as other firmware of the system.
Storage device 410 may include computer-readable storage medium 409 (also known as a machine-readable storage medium or a computer-readable medium) on which is stored one or more sets of instructions or software (e.g., processing module, unit, and/or processing module/unit/logic 408) embodying any one or more of the methodologies or functions described herein. Processing module/unit/logic 408 may represent any of the components described above. Processing module/unit/logic 408 may also reside, completely or at least partially, within memory 403 and/or within processor 401 during execution thereof by system 400, memory 403 and processor 401 also constituting machine-accessible storage media. Processing module/unit/logic 408 may further be transmitted or received over a network via network interface device(s) 405.
Computer-readable storage medium 409 may also be used to store some software functionalities described above persistently. While computer-readable storage medium 409 is shown in an exemplary embodiment to be a single medium, the term “computer-readable storage medium” should be taken to include a single medium or multiple media (e.g., a centralized or distributed database, and/or associated caches and servers) that store the one or more sets of instructions. The terms “computer-readable storage medium” shall also be taken to include any medium that is capable of storing or encoding a set of instructions for execution by the machine and that cause the machine to perform any one or more of the methodologies of embodiments disclosed herein. The term “computer-readable storage medium” shall accordingly be taken to include, but not be limited to, solid-state memories, and optical and magnetic media, or any other non-transitory machine-readable medium.
Processing module/unit/logic 408, components and other features described herein can be implemented as discrete hardware components or integrated in the functionality of hardware components such as ASICS, FPGAs, DSPs or similar devices. In addition, processing module/unit/logic 408 can be implemented as firmware or functional circuitry within hardware devices. Further, processing module/unit/logic 408 can be implemented in any combination hardware devices and software components.
Note that while system 400 is illustrated with various components of a data processing system, it is not intended to represent any particular architecture or manner of interconnecting the components; as such details are not germane to embodiments disclosed herein. It will also be appreciated that network computers, handheld computers, mobile phones, servers, and/or other data processing systems which have fewer components or perhaps more components may also be used with embodiments disclosed herein.
Some portions of the preceding detailed descriptions have been presented in terms of algorithms and symbolic representations of operations on data bits within a computer memory. These algorithmic descriptions and representations are the ways used by those skilled in the data processing arts to most effectively convey the substance of their work to others skilled in the art. An algorithm is here, and generally, conceived to be a self-consistent sequence of operations leading to a desired result. The operations are those requiring physical manipulations of physical quantities.
It should be borne in mind, however, that all of these and similar terms are to be associated with the appropriate physical quantities and are merely convenient labels applied to these quantities. Unless specifically stated otherwise as apparent from the above discussion, it is appreciated that throughout the description, discussions utilizing terms such as those set forth in the claims below, refer to the action and processes of a computer system, or similar electronic computing device, that manipulates and transforms data represented as physical (electronic) quantities within the computer system's registers and memories into other data similarly represented as physical quantities within the computer system memories or registers or other such information storage, transmission or display devices.
Embodiments disclosed herein also relate to an apparatus for performing the operations herein. Such a computer program is stored in a non-transitory computer readable medium. A non-transitory machine-readable medium includes any mechanism for storing information in a form readable by a machine (e.g., a computer). For example, a machine-readable (e.g., computer-readable) medium includes a machine (e.g., a computer) readable storage medium (e.g., read only memory (“ROM”), random access memory (“RAM”), magnetic disk storage media, optical storage media, flash memory devices).
The processes or methods depicted in the preceding figures may be performed by processing logic that comprises hardware (e.g. circuitry, dedicated logic, etc.), software (e.g., embodied on a non-transitory computer readable medium), or a combination of both.
Although the processes or methods are described above in terms of some sequential operations, it should be appreciated that some of the operations described may be performed in a different order. Moreover, some operations may be performed in parallel rather than sequentially.
Embodiments disclosed herein are not described with reference to any particular programming language. It will be appreciated that a variety of programming languages may be used to implement the teachings of embodiments disclosed herein.
In the foregoing specification, embodiments have been described with reference to specific exemplary embodiments thereof. It will be evident that various modifications may be made thereto without departing from the broader spirit and scope of the embodiments disclosed herein as set forth in the following claims. The specification and drawings are, accordingly, to be regarded in an illustrative sense rather than a restrictive sense.
This application claims the benefit of U.S. Provision Patent Application 63/605,376, filed on Dec. 1, 2023, and titled “Distributed Ledger to Assure Ownership in Securely Onboarded Devices”, and is incorporated by reference in its entirety here.
| Number | Date | Country | |
|---|---|---|---|
| 63605376 | Dec 2023 | US |
