Offline-First Design for Fault Tolerant Applications.
- Linklater, Gregory, Marais, Craig, Herbert, Alan, Irwin, Barry V W
- Authors: Linklater, Gregory , Marais, Craig , Herbert, Alan , Irwin, Barry V W
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/427683 , vital:72455 , https://www.researchgate.net/profile/Barry-Irwin/publication/327624337_Offline-First_Design_for_Fault_Tolerant_Applications/links/5b9a50a1458515310584ebbe/Offline-First-Design-for-Fault-Tolerant-Applications.pdf
- Description: Faults are inevitable and frustrating, as we increasingly depend on network access and the chain of services that provides it, we suffer a greater loss in productivity when any of those services fail and service delivery is suspended. This research explores connectivity and infrastructure fault tolerance through offline-first application design using techniques such as CQRS and event sourcing. To apply these techniques, this research details the design, and implementation of LOYALTY TRACKER; an offline-first, PoS system for the Android platform that was built to operate in the context of a small pub where faults are commonplace. The application demonstrates data consistency and integrity and a complete feature set that continues to operate while offline but is limited by scalability. The application successfully achieves it’s goals in the limited capacity for which it was designed.
- Full Text:
- Date Issued: 2018
- Authors: Linklater, Gregory , Marais, Craig , Herbert, Alan , Irwin, Barry V W
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/427683 , vital:72455 , https://www.researchgate.net/profile/Barry-Irwin/publication/327624337_Offline-First_Design_for_Fault_Tolerant_Applications/links/5b9a50a1458515310584ebbe/Offline-First-Design-for-Fault-Tolerant-Applications.pdf
- Description: Faults are inevitable and frustrating, as we increasingly depend on network access and the chain of services that provides it, we suffer a greater loss in productivity when any of those services fail and service delivery is suspended. This research explores connectivity and infrastructure fault tolerance through offline-first application design using techniques such as CQRS and event sourcing. To apply these techniques, this research details the design, and implementation of LOYALTY TRACKER; an offline-first, PoS system for the Android platform that was built to operate in the context of a small pub where faults are commonplace. The application demonstrates data consistency and integrity and a complete feature set that continues to operate while offline but is limited by scalability. The application successfully achieves it’s goals in the limited capacity for which it was designed.
- Full Text:
- Date Issued: 2018
Toward distributed key management for offline authentication
- Linklater, Gregory, Smith, Christian, Herbert, Alan, Irwin, Barry V W
- Authors: Linklater, Gregory , Smith, Christian , Herbert, Alan , Irwin, Barry V W
- Date: 2018
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/430283 , vital:72680 , https://doi.org/10.1145/3278681.3278683
- Description: Self-sovereign identity promises prospective users greater control, security, privacy, portability and overall greater convenience; however the immaturity of current distributed key management solutions results in general disregard of security advisories in favour of convenience and accessibility. This research proposes the use of intermediate certificates as a distributed key management solution. Intermediate certificates will be shown to allow multiple keys to authenticate to a single self-sovereign identity. Keys may be freely added to an identity without requiring a distributed ledger, any other third-party service or sharing private keys between devices. This research will also show that key rotation is a superior alternative to existing key recovery and escrow systems in helping users recover when their keys are lost or compromised. These features will allow remote credentials to be used to issuer, present and appraise remote attestations, without relying on a constant Internet connection.
- Full Text:
- Date Issued: 2018
- Authors: Linklater, Gregory , Smith, Christian , Herbert, Alan , Irwin, Barry V W
- Date: 2018
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/430283 , vital:72680 , https://doi.org/10.1145/3278681.3278683
- Description: Self-sovereign identity promises prospective users greater control, security, privacy, portability and overall greater convenience; however the immaturity of current distributed key management solutions results in general disregard of security advisories in favour of convenience and accessibility. This research proposes the use of intermediate certificates as a distributed key management solution. Intermediate certificates will be shown to allow multiple keys to authenticate to a single self-sovereign identity. Keys may be freely added to an identity without requiring a distributed ledger, any other third-party service or sharing private keys between devices. This research will also show that key rotation is a superior alternative to existing key recovery and escrow systems in helping users recover when their keys are lost or compromised. These features will allow remote credentials to be used to issuer, present and appraise remote attestations, without relying on a constant Internet connection.
- Full Text:
- Date Issued: 2018
JSON schema for attribute-based access control for network resource security
- Linklater, Gregory, Smith, Christian, Connan, James, Herbert, Alan, Irwin, Barry V W
- Authors: Linklater, Gregory , Smith, Christian , Connan, James , Herbert, Alan , Irwin, Barry V W
- Date: 2017
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428368 , vital:72506 , https://researchspace.csir.co.za/dspace/bitstream/handle/10204/9820/Linklater_19660_2017.pdf?sequence=1andisAllowed=y
- Description: Attribute-based Access Control (ABAC) is an access control model where authorization for an action on a resource is determined by evalu-ating attributes of the subject, resource (object) and environment. The attributes are evaluated against boolean rules of varying complexity. ABAC rule languages are often based on serializable object modeling and schema languages as in the case of XACML which is based on XML Schema. XACML is a standard by OASIS, and is the current de facto standard for ABAC. While a JSON profile for XACML exists, it is simply a compatibility layer for using JSON in XACML which caters to the XML object model paradigm, as opposed to the JSON object model paradigm. This research proposes JSON Schema as a modeling lan-guage that caters to the JSON object model paradigm on which to base an ABAC rule language. It continues to demonstrate its viability for the task by comparison against the features provided to XACML by XML Schema.
- Full Text:
- Date Issued: 2017
- Authors: Linklater, Gregory , Smith, Christian , Connan, James , Herbert, Alan , Irwin, Barry V W
- Date: 2017
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428368 , vital:72506 , https://researchspace.csir.co.za/dspace/bitstream/handle/10204/9820/Linklater_19660_2017.pdf?sequence=1andisAllowed=y
- Description: Attribute-based Access Control (ABAC) is an access control model where authorization for an action on a resource is determined by evalu-ating attributes of the subject, resource (object) and environment. The attributes are evaluated against boolean rules of varying complexity. ABAC rule languages are often based on serializable object modeling and schema languages as in the case of XACML which is based on XML Schema. XACML is a standard by OASIS, and is the current de facto standard for ABAC. While a JSON profile for XACML exists, it is simply a compatibility layer for using JSON in XACML which caters to the XML object model paradigm, as opposed to the JSON object model paradigm. This research proposes JSON Schema as a modeling lan-guage that caters to the JSON object model paradigm on which to base an ABAC rule language. It continues to demonstrate its viability for the task by comparison against the features provided to XACML by XML Schema.
- Full Text:
- Date Issued: 2017
- «
- ‹
- 1
- ›
- »