Publicação
Secure Abstractions for Trusted Cloud Computation
| Resumo: | Cloud computing is adopted by most organizations due to its characteristics, namely offering on-demand resources and services that can quickly be provisioned with minimal management effort and maintenance expenses for its users. However it still suffers from security incidents which have lead to many data security concerns and reluctance in further adherence. With the advent of these incidents, cryptographic technologies such as homomorphic and searchable encryption schemes were leveraged to provide solutions that mitigated data security concerns. The goal of this thesis is to provide a set of secure abstractions to serve as a tool for programmers to develop their own distributed applications. Furthermore, these abstractions can also be used to support trusted cloud computations in the context of NoSQL data stores. For this purpose we leveraged conflict-free replicated data types (CRDTs) as they provide a mechanism to ensure data consistency when replicated that has no need for synchronization, which aligns well with the distributed and replicated nature of the cloud, and the aforementioned cryptographic technologies to comply with the security requirements. The main challenge of this thesis consisted in combining the cryptographic technologies with the CRDTs in such way that it was possible to support all of the data structures functionalities over ciphertext while striving to attain the best security and performance possible. To evaluate our abstractions we conducted an experiment to compare each secure abstraction with their non secure counterpart performance wise. Additionally, we also analysed the security level provided by each of the structures in light of the cryptographic scheme used to support it. The results of our experiment shows that our abstractions provide the intended data security with an acceptable performance overhead, showing that it has potential to be used to build solutions for trusted cloud computation. |
|---|---|
| Autores principais: | Tavares, Joana da Silva |
| Assunto: | Trusted cloud computing Homomorphic Encryption Searchable Encryption Data Abstractions CRDTs |
| Ano: | 2018 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade Nova de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório Institucional da UNL |
| _version_ | 1879446384848928768 |
|---|---|
| author | Tavares, Joana da Silva |
| author_facet | Tavares, Joana da Silva |
| author_role | author |
| contributor_name_str_mv | Ferreira, Bernardo Preguiça, Nuno RUN |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Tavares, Joana da Silva\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Ferreira, Bernardo Preguiça, Nuno RUN |
| datacite.creators.creator.creatorName.fl_str_mv | Tavares, Joana da Silva |
| datacite.date.Accepted.fl_str_mv | 2018-12-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2019-02-25T10:37:45Z |
| datacite.date.embargoed.fl_str_mv | 2019-02-25T10:37:45Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Trusted cloud computing Homomorphic Encryption Searchable Encryption Data Abstractions CRDTs |
| datacite.titles.title.fl_str_mv | Secure Abstractions for Trusted Cloud Computation |
| dc.contributor.none.fl_str_mv | Ferreira, Bernardo Preguiça, Nuno RUN |
| dc.creator.none.fl_str_mv | Tavares, Joana da Silva |
| dc.date.Accepted.fl_str_mv | 2018-12-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2019-02-25T10:37:45Z |
| dc.date.embargoed.fl_str_mv | 2019-02-25T10:37:45Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10362/61548 |
| dc.language.none.fl_str_mv | eng |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | Trusted cloud computing Homomorphic Encryption Searchable Encryption Data Abstractions CRDTs |
| dc.title.fl_str_mv | Secure Abstractions for Trusted Cloud Computation |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_bdcc |
| description | Cloud computing is adopted by most organizations due to its characteristics, namely offering on-demand resources and services that can quickly be provisioned with minimal management effort and maintenance expenses for its users. However it still suffers from security incidents which have lead to many data security concerns and reluctance in further adherence. With the advent of these incidents, cryptographic technologies such as homomorphic and searchable encryption schemes were leveraged to provide solutions that mitigated data security concerns. The goal of this thesis is to provide a set of secure abstractions to serve as a tool for programmers to develop their own distributed applications. Furthermore, these abstractions can also be used to support trusted cloud computations in the context of NoSQL data stores. For this purpose we leveraged conflict-free replicated data types (CRDTs) as they provide a mechanism to ensure data consistency when replicated that has no need for synchronization, which aligns well with the distributed and replicated nature of the cloud, and the aforementioned cryptographic technologies to comply with the security requirements. The main challenge of this thesis consisted in combining the cryptographic technologies with the CRDTs in such way that it was possible to support all of the data structures functionalities over ciphertext while striving to attain the best security and performance possible. To evaluate our abstractions we conducted an experiment to compare each secure abstraction with their non secure counterpart performance wise. Additionally, we also analysed the security level provided by each of the structures in light of the cryptographic scheme used to support it. The results of our experiment shows that our abstractions provide the intended data security with an acceptable performance overhead, showing that it has potential to be used to build solutions for trusted cloud computation. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | masterThesis |
| fulltext.url.fl_str_mv | https://run.unl.pt/bitstreams/2733dddb-5ef7-4346-9c30-4d392f9d8e88/download |
| id | run_bf8cfa1f10e241787a1bc5ae8ead2d04 |
| identifier.url.fl_str_mv | http://hdl.handle.net/10362/61548 |
| inst_facet_str | urn:organizationAcronym:unl{{{_:::_}}}Universidade Nova de Lisboa |
| instacron_str | unl |
| institution | Universidade Nova de Lisboa |
| instname_str | Universidade Nova de Lisboa |
| language | eng |
| network_acronym_str | run |
| network_name_str | Repositório Institucional da UNL |
| oai_identifier_str | oai:run.unl.pt:10362/61548 |
| organization_str_mv | urn:organizationAcronym:unl |
| person_str_mv | Tavares, Joana da Silva |
| publishDate | 2018 |
| repo_facet_str | urn:repositoryAcronym:run{{{_:::_}}}Repositório Institucional da UNL |
| reponame_str | Repositório Institucional da UNL |
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| spelling | engpt_PTCloud computing is adopted by most organizations due to its characteristics, namely offering on-demand resources and services that can quickly be provisioned with minimal management effort and maintenance expenses for its users. However it still suffers from security incidents which have lead to many data security concerns and reluctance in further adherence. With the advent of these incidents, cryptographic technologies such as homomorphic and searchable encryption schemes were leveraged to provide solutions that mitigated data security concerns. The goal of this thesis is to provide a set of secure abstractions to serve as a tool for programmers to develop their own distributed applications. Furthermore, these abstractions can also be used to support trusted cloud computations in the context of NoSQL data stores. For this purpose we leveraged conflict-free replicated data types (CRDTs) as they provide a mechanism to ensure data consistency when replicated that has no need for synchronization, which aligns well with the distributed and replicated nature of the cloud, and the aforementioned cryptographic technologies to comply with the security requirements. The main challenge of this thesis consisted in combining the cryptographic technologies with the CRDTs in such way that it was possible to support all of the data structures functionalities over ciphertext while striving to attain the best security and performance possible. To evaluate our abstractions we conducted an experiment to compare each secure abstraction with their non secure counterpart performance wise. Additionally, we also analysed the security level provided by each of the structures in light of the cryptographic scheme used to support it. The results of our experiment shows that our abstractions provide the intended data security with an acceptable performance overhead, showing that it has potential to be used to build solutions for trusted cloud computation.application/pdfpt_PTSecure Abstractions for Trusted Cloud ComputationTavares, Joana da SilvaFerreira, BernardoPreguiça, NunoHostingInstitutionOrganizationalRUNe-mailmailto:run@unl.ptrun@unl.pt2019-02-25T10:37:45Z2018-1220182018-12-01T00:00:00ZHandlehttp://hdl.handle.net/10362/61548http://purl.org/coar/access_right/c_abf2open accessTrusted cloud computingHomomorphic EncryptionSearchable EncryptionData AbstractionsCRDTs1476334 bytesliteraturehttp://purl.org/coar/resource_type/c_bdccmaster thesishttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://run.unl.pt/bitstreams/2733dddb-5ef7-4346-9c30-4d392f9d8e88/download |
| spellingShingle | Secure Abstractions for Trusted Cloud Computation Tavares, Joana da Silva Trusted cloud computing Homomorphic Encryption Searchable Encryption Data Abstractions CRDTs |
| status | SINGLETON |
| subject.fl_str_mv | Trusted cloud computing Homomorphic Encryption Searchable Encryption Data Abstractions CRDTs |
| title | Secure Abstractions for Trusted Cloud Computation |
| title_full | Secure Abstractions for Trusted Cloud Computation |
| title_fullStr | Secure Abstractions for Trusted Cloud Computation |
| title_full_unstemmed | Secure Abstractions for Trusted Cloud Computation |
| title_short | Secure Abstractions for Trusted Cloud Computation |
| title_sort | Secure Abstractions for Trusted Cloud Computation |
| topic | Trusted cloud computing Homomorphic Encryption Searchable Encryption Data Abstractions CRDTs |
| topic_facet | Trusted cloud computing Homomorphic Encryption Searchable Encryption Data Abstractions CRDTs |
| url | http://hdl.handle.net/10362/61548 |
| visible | 1 |
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