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Priv. Secur."],"published-print":{"date-parts":[[2017,8,31]]},"abstract":"<jats:p>\n            Cloud services have turned remote computation into a commodity and enable convenient online collaboration. However, they require that clients fully trust the service provider in terms of confidentiality, integrity, and availability. Toward reducing this dependency, this article introduces\n            <jats:italic>VICOS<\/jats:italic>\n            , a protocol for verification of integrity and consistency for cloud object storage that enables a group of mutually trusting clients to detect data integrity and consistency violations for a cloud object storage service. It aims at services where multiple clients cooperate on data stored remotely on a potentially misbehaving service. VICOS enforces the consistency notion of fork-linearizability, supports wait-free client semantics for most operations, and reduces the computation and communication overhead compared to previous protocols. VICOS is based on a generic authenticated data structure. Moreover, its operations cover the hierarchical name space of a cloud object store, supporting a real-world interface and not only a simplistic abstraction. A prototype of VICOS that works with the key-value store interface of commodity cloud storage services has been implemented, and an evaluation demonstrates its advantage compared to existing systems.\n          <\/jats:p>","DOI":"10.1145\/3079762","type":"journal-article","created":{"date-parts":[[2017,8,1]],"date-time":"2017-08-01T19:20:44Z","timestamp":1501615244000},"page":"1-30","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":11,"title":["Don\u2019t Trust the Cloud, Verify"],"prefix":"10.1145","volume":"20","author":[{"given":"Marcus","family":"Brandenburger","sequence":"first","affiliation":[{"name":"IBM Research, Zurich, R\u00fcschlikon, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christian","family":"Cachin","sequence":"additional","affiliation":[{"name":"IBM Research, Zurich, R\u00fcschlikon, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nikola","family":"Kne\u017eevi\u0107","sequence":"additional","affiliation":[{"name":"IBM Research, Zurich, R\u00fcschlikon, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2017,7,31]]},"reference":[{"key":"e_1_2_1_1_1","first-page":"143","article-title":"Zipfs law and the Internet","volume":"3","author":"Adamic Lada A.","year":"2002","journal-title":"Glottometrics"},{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1145\/1060289.1060291"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1007\/3-540-45439-X_26"},{"key":"e_1_2_1_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/0471478210"},{"key":"e_1_2_1_5_1","doi-asserted-by":"publisher","DOI":"10.1145\/2460276.2462076"},{"key":"e_1_2_1_6_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF01185212"},{"key":"e_1_2_1_7_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-642-18381-2_1"},{"key":"e_1_2_1_8_1","volume-title":"Introduction to Reliable and Secure Distributed Programming","author":"Cachin Christian","edition":"2"},{"key":"e_1_2_1_9_1","doi-asserted-by":"publisher","DOI":"10.1137\/090751062"},{"key":"e_1_2_1_10_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-319-14472-6_1"},{"key":"e_1_2_1_11_1","doi-asserted-by":"publisher","DOI":"10.1145\/1281100.1281121"},{"key":"e_1_2_1_12_1","doi-asserted-by":"publisher","DOI":"10.1145\/1294261.1294280"},{"key":"e_1_2_1_13_1","doi-asserted-by":"publisher","DOI":"10.1145\/2019599.2019602"},{"key":"e_1_2_1_14_1","volume-title":"Felten","author":"Feldman Ariel J.","year":"2010"},{"key":"e_1_2_1_15_1","doi-asserted-by":"publisher","DOI":"10.1145\/564585.564601"},{"key":"e_1_2_1_16_1","volume-title":"Proceedings of the Network and Distributed Systems Security Symposium (NDSS\u201903)","author":"Goh Eu-Jin","year":"2003"},{"key":"e_1_2_1_17_1","volume-title":"The Foundations of Cryptography","author":"Goldreich Oded"},{"key":"e_1_2_1_18_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-540-85886-7_6"},{"key":"e_1_2_1_19_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00453-009-9355-7"},{"key":"e_1_2_1_20_1","doi-asserted-by":"publisher","DOI":"10.1145\/191839.191886"},{"key":"e_1_2_1_21_1","doi-asserted-by":"publisher","DOI":"10.1145\/78969.78972"},{"key":"e_1_2_1_22_1","doi-asserted-by":"publisher","DOI":"10.5555\/1624775.1624804"},{"key":"e_1_2_1_23_1","doi-asserted-by":"publisher","DOI":"10.1109\/SP.2016.58"},{"key":"e_1_2_1_24_1","doi-asserted-by":"publisher","DOI":"10.1145\/2659897"},{"key":"e_1_2_1_25_1","volume-title":"Proceedings of the 6th Symposium on Operating Systems Design and Implementation (OSDI\u201904)","author":"Li Jinyuan","year":"2004"},{"key":"e_1_2_1_26_1","doi-asserted-by":"publisher","DOI":"10.1145\/2063509.2063512"},{"key":"e_1_2_1_27_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-642-10877-8_21"},{"key":"e_1_2_1_28_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00453-003-1076-8"},{"key":"e_1_2_1_29_1","doi-asserted-by":"publisher","DOI":"10.1145\/571825.571840"},{"key":"e_1_2_1_30_1","doi-asserted-by":"publisher","DOI":"10.1145\/2535838.2535851"},{"key":"e_1_2_1_31_1","doi-asserted-by":"publisher","DOI":"10.1109\/49.839932"},{"key":"e_1_2_1_32_1","doi-asserted-by":"publisher","DOI":"10.5555\/2002181.2002212"},{"key":"e_1_2_1_33_1","doi-asserted-by":"publisher","DOI":"10.1145\/1866835.1866841"},{"key":"e_1_2_1_34_1","doi-asserted-by":"publisher","DOI":"10.1145\/2420950.2420985"},{"key":"e_1_2_1_35_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-540-39658-1_2"},{"key":"e_1_2_1_36_1","unstructured":"Gerhard Weikum and Gottfried Vossen. 2002. 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