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Page 1: 12/18/2015. Secure Cloud Storage Systems Alptekin Küpçü, Öznur Özkasap Ertem Esiner, Adilet Kachkeev Department of Computer Engineering, Koç University,

04/21/23

Page 2: 12/18/2015. Secure Cloud Storage Systems Alptekin Küpçü, Öznur Özkasap Ertem Esiner, Adilet Kachkeev Department of Computer Engineering, Koç University,

Secure Cloud Storage Systems

Alptekin Küpçü, Öznur ÖzkasapErtem Esiner, Adilet Kachkeev

Department of Computer Engineering, Koç University, İstanbul

Page 3: 12/18/2015. Secure Cloud Storage Systems Alptekin Küpçü, Öznur Özkasap Ertem Esiner, Adilet Kachkeev Department of Computer Engineering, Koç University,

Security on Cloud Storage

010110101011

Page 4: 12/18/2015. Secure Cloud Storage Systems Alptekin Küpçü, Öznur Özkasap Ertem Esiner, Adilet Kachkeev Department of Computer Engineering, Koç University,

Integrity

010110101011

Page 5: 12/18/2015. Secure Cloud Storage Systems Alptekin Küpçü, Öznur Özkasap Ertem Esiner, Adilet Kachkeev Department of Computer Engineering, Koç University,

“We will have no liability to you for any unauthorized access or use, corruption, deletion, destruction or loss of any of Your Content or Applications” –Amazon S3 license

“Google and Partners DO NOT warrant that [...] Google services will be uninterrupted, timely, secure, or error-free.”–Google Apps Docs (Enterprise Edition) license

Current Generation Cloud Storage

Page 6: 12/18/2015. Secure Cloud Storage Systems Alptekin Küpçü, Öznur Özkasap Ertem Esiner, Adilet Kachkeev Department of Computer Engineering, Koç University,

Alteration

010110101011

Page 7: 12/18/2015. Secure Cloud Storage Systems Alptekin Küpçü, Öznur Özkasap Ertem Esiner, Adilet Kachkeev Department of Computer Engineering, Koç University,

Alteration

010110101011

010110101000

Page 8: 12/18/2015. Secure Cloud Storage Systems Alptekin Küpçü, Öznur Özkasap Ertem Esiner, Adilet Kachkeev Department of Computer Engineering, Koç University,

Alteration

010110101011

Page 9: 12/18/2015. Secure Cloud Storage Systems Alptekin Küpçü, Öznur Özkasap Ertem Esiner, Adilet Kachkeev Department of Computer Engineering, Koç University,

11

010110101011

Alteration by block

Page 10: 12/18/2015. Secure Cloud Storage Systems Alptekin Küpçü, Öznur Özkasap Ertem Esiner, Adilet Kachkeev Department of Computer Engineering, Koç University,

Alteration by block

1100

010110101011

Page 11: 12/18/2015. Secure Cloud Storage Systems Alptekin Küpçü, Öznur Özkasap Ertem Esiner, Adilet Kachkeev Department of Computer Engineering, Koç University,

We provide: underlying data structure : optimized implementation of

rank-based skip list(together with authenticated and ordinary skip lists) as a library.

Optimized proof mechanism between client and server (prototype)

What is next: Optimizations with parallel I/O and cryptographic

computation Implementation on mobile devices Energy consumption measurements and application of

energy-efficiency methodologies

Project Summary

Page 12: 12/18/2015. Secure Cloud Storage Systems Alptekin Küpçü, Öznur Özkasap Ertem Esiner, Adilet Kachkeev Department of Computer Engineering, Koç University,

Questions

?

1 10601 Machine Learning Recitation 2 Öznur Taştan September 2, 2009

Product Catalogue - Öznur Kablo | Öznur KabloÖZNUR CABLE, has built on 70.000 m² closed area. Upon completion of the investments, it is going to be one of Turkey's largest cable

Vladimir Gritsev Harvard Adilet Imambekov Harvard Anton Burkov Harvard Robert Cherng Harvard Anatoli Polkovnikov Harvard/Boston University Ehud Altman

ALPTEKİN KÜPÇÜcostic1206.uvigo.es/sites/default/files/Meetings/Mataro/...[ABK13] Tolga Acar, Mira elenkiy, and Alptekin Küpçü. ^Single Password Authentication _. Elsevier Computer

DYSPNEA AND QUALITY OF LIFE IN CHRONIC RESPIRATORY FAILURE ; SCALES AND QUESTIONNAIRES Prof. Dr. Öznur AKKOCA YILDIZ Ankara University, Faculty of Medicine,

To my beloved family… · I also wish to express my thanks to my classmates and dorm mates, most especially to Öznur Özkan, Özlem Duran, and AyĢegül Albe. Without them, this

ROMA IN TURKEY European policy and practice towards ethnic minorities Özlem Alioğlu Öznur Küçüker Volkan Şeysane

Spinor condensates beyond mean-field Ryan Barnett Harvard, Caltech Ari Turner Harvard Adilet Imambekov Harvard Ehud Altman Harvard, Weizmann Mikhail Lukin

utmidia.ro · Higher Law School "Adilet" (1995 Russian Understanding Speaking Writing . English Bulgarian Social and managerial skills Additional information Driving license B Listening

Quantum coherence and interactions in many body systems Collaborators: Ehud Altman, Anton Burkov, Derrick Chang, Adilet Imambekov, Vladimir Gritsev, Mikhail

Adilet Imambekov- Strongly Correlated Phenomena with Ultracold Atomic Gases

1 RECOMMENDATION SYSTEMS ÖZNUR KIRMEMİŞ. OUTLINE INTRODUCTION FORMALIZATION OF THE PROBLEM APPROACHES COLLABORATIVE CONTENT BASED HYBRID CONCLUSION

Environmental Code of the Republic of Kazakhstan - 'Adilet ... · management and cross-sector coordination in the development and implementation of state policy in the scope of environment

Mentors: Öznur ALTINTA Ş Re ş at BOZKIR. Purpose of the study: want to review the effects of new technologies on teaching and learning. Method: consider

Environmental Code of the Republic of Kazakhstan -Adilet ......1) mobile source of releasing pollutants into the atmosphere – transport vehicles, machinery and other mobile facilities

DIGITAL TACHOGRAPH SYSTEM (DTS) IN TURKEY & DATA … · IN TURKEY & DATA ANALYSIS PROJECT Öznur YILMAZ 24.10.2016 (TÜİK, 2010) 2 ... • Electronic card personalization • Physical

Öznur Kablo | Öznur Kablo€¦ · - all kinds of medium voltage power cables with copper and conductor - all kinds of halogen-free and flame retardant low voltage power cables -

Condensed Matter models for many-body systems of ultracold atoms Eugene Demler Harvard University Collaborators: Ehud Altman, Robert Cherng, Adilet Imambekov,

Nonequilibrium dynamics of interacting systems of cold atoms Collaborators: Ehud Altman, Anton Burkov, Robert Cherng, Adilet Imambekov, Vladimir Gritsev,

Password-Based Football Alptekin Küpçü. Favorite Passwords Standard User 123456 password No Min Char Limit 12345 pwd

Managing DB2 for z/OS Utilities with DB2 Tools …Managing DB2 for z/OS Utilities with DB2 Tools Solution Packs Paolo Bruni Carlos Alberto Gomes da Silva Junior Craig McKellar Adilet

Secure Cloud Storage Best Senior Project Story › ~cs4912 › 2020-2021 › seminars › kupcuSlides.pdfSecure Cloud Storage & Best Senior Project Story ... 3/12/2019 Alptekin Küpçü

Eugene Demler Harvard University Collaborators: Ehud ...cmt.harvard.edu/demler/2008_TALKS/2008_princeton.pdf · Ehud Altman, Robert Cherng, Adilet Imambekov, Vladimir Gritsev, Mikhail

Elif Şen, Öznur Akkoca Yıldız, Sevgi Bartu Saryal Pulmonary Diseases Department

Interference experiments with ultracold atoms Collaborators: Ehud Altman, Anton Burkov, Robert Cherng, Adilet Imambekov, Serena Fagnocchi, Vladimir Gritsev,

Cati, Mehmet Osman (2013) The political economy of Syrian … · Fethullah Çatı as well as to my siblings Raci, Özgür and Öznur. Without their love, encouragement and unwavering

POSTER WALK 13: FOLLOW UP 3 Poster Walks AbstractsAUTHORS: Melda Taş í, İbrahim Murat Hirfanoğlu í, İsmail Akdulum î, Öznur o Çunağa î, Müne À Àer aş í, Elif Keleş