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Dissertations / Theses on the topic 'Encryption'

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1

Yilmaz, Fatih Levent. "Video Encryption." Thesis, Linnéuniversitetet, Institutionen för datavetenskap, fysik och matematik, DFM, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-12604.

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Video Encryption is nearly the best method for blocking unwanted seizures and viewing of any transmitted video or information. There are several useful techniques that are available for encryping videos. However, one of the unique speciality for human eye is spotting the irregularity in videos due to weak video decoding or weak choice of video encryption hardware. Because of this situation, it is very important to select the right hardware or else our video transmissions may not be secured or our decoded video may be un-watchable. Every technique has advantages and disadvantages over other tec
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Akdag, Sadik Bahaettin. "An Image Encryption Algorithm Robust To Post-encryption Bitrate Conversion." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607710/index.pdf.

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In this study, a new method is proposed to protect JPEG still images through encryption by employing integer-to-integer transforms and frequency domain scrambling in DCT channels. Different from existing methods in the literature, the encrypted image can be further compressed, i.e. transcoded, after the encryption. The method provides selective encryption/security level with the adjustment of its parameters. The encryption method is tested with various images and compared with the methods in the literature in terms of scrambling performance, bandwidth expansion, key size and security. Furtherm
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Meissner, Robert. "Data Encryption Standard." Universitätsbibliothek Chemnitz, 2002. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-200200590.

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Die heutige Informationsgesellschaft hat die Formen des menschlichen Handelns in vielen Bereichen des taeglichen Lebens veraendert. Die Moeglichkeit, Informationen über das Internet auszutauschen, draengt konventionelle Kommunikationsformen immer mehr in den Hintergrund. Gerade in den Bereichen eBusiness und ePayment, welche aufgrund der zunehmenden Globalisierung unabdingbar sind, spielen dabei die Sicherheit und die Authentitaet der uebertragenen Daten eine wichtige Rolle. Meine Seminararbeit stellt den Data Encryption Standard (DES) in seiner Funktionsweise vor, diskutiert kritisch dessen S
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St-Jules, Michael. "Secure Quantum Encryption." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35371.

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To the field of cryptography, quantum mechanics is a game changer. The exploitation of quantum mechanical properties through the manipulation of quantum information, the information encoded in the state of quantum systems, would allow many protocols in use today to be broken as well as lead to the expansion of cryptography to new protocols. In this thesis, quantum encryption, i.e. encryption schemes for quantum data, is defined, along with several definitions of security, broadly divisible into semantic security and ciphertext indistinguishability, which are proven equivalent, in analogy to th
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Fauzi, Prastudy. "On Fully Homomorphic Encryption." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for telematikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18992.

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Fully homomorphic encryption is an encryption scheme where a party can receive encrypted data and perform arbitrary operations on this data efficiently.The data remains encrypted throughout, but the operations can be done regardless, without having to know the decryption key.Such a scheme would be very advantageous, for example in ensuring the privacy of data that is sent to a third-party service.This is in contrast with schemes like Paillier where you can not perform a multiplication of encrypted data without decrypting the data first, or ElGamal where you can not perform an addition of encry
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Topsholm, Max. "Transactional Data Encryption View." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-147885.

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This thesis is about the theory behind and software development of TDE View. The application produces a graphical presentation containing graphical objects, such as charts and tables, which display real time data derived from online and currently available services in Swedbank. TDE View is a long term replacement of the previous solution, TDE System Monitor, the purpose of TDE View is to provide the ability to preview the aforementioned features online instead of local deployment. Moreover, the thesis will cover aspects regarding concepts and ideas in transferring data from different hosts in
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Wang, Yongsheng. "Advanced video encryption techniques." Thesis, Queen's University Belfast, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.602966.

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Protecting video streams while incurring minimal impact on the compression performance is very important for practical video distribution. Selective encryption is one of the most promising techniques that can offer the required security while maintaining format compliance after encryption with no or little impact on the compression performance. Also, selective encryption techniques can be employed in video surveillance systems to alleviate concerns over privacy invasion by applying the encryption to specific regions of interest. This thesis presents advanced selective encryption techniques for
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8

King, Kevin C. "Optimizing fully homomorphic encryption." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/113156.

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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2016.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 50-51).<br>Fully homomorphic encryption (FHE) presents the possibility of removing the need to trust cloud providers with plaintext data. We present two new FHE scheme variants of BGV'12, both of which remove the need for ke
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Banu, Pokhali Sayeda Roohi. "Satellite on-board encryption." Thesis, University of Surrey, 2007. http://epubs.surrey.ac.uk/774244/.

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In the light of latest intrusions into satellite data the demand to protect the sensitive and valuable data transmitted from satellites to ground has increased and hence the need to use encryption on-board. The Advanced Encryption Standard (AES), which is a very popular choice in terrestrial communications, is slowly emerging as the preferred option in the aerospace industry including satellites. Computing systems on-board satellites have limited power and computational resources as in terrestrial embedded systems. With these constraints in mind various implementations of the AES algorithm usi
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Anicama, Jorge. "Prime numbers and encryption." Pontificia Universidad Católica del Perú, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/95565.

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In this article we will deal with the prime numbers and its current use in encryption algorithms. Encryption algorithms make possible the exchange of sensible data in internet, such as bank transactions, email correspondence and other internet transactions where privacy is important.
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11

Chotard, Jérémy. "Delegation in functional encryption." Thesis, Limoges, 2019. http://www.theses.fr/2019LIMO0088.

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Le chiffrement fonctionnel est un paradigme récent qui généralise le chiffrement à clef publique classique. Cette formalisation a pour objectif de réguler plus finement le contrôle d’accès aux données chiffrées, ainsi que l’information dévoilée par le déchiffrement. Cette thèse étudie des possibilités de délégation au travers de ces deux aspects. Dans un premier temps, nous travaillons dans un contexte multi-client : plusieurs utilisateurs fournissent chacun une donnée personnelle chiffrée, et une entité souhaite extraire de l’information de ces données. Notre contribution consiste à permettre
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Song, Yuanzheng. "Browser-Based Manual Encryption." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/4235.

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Billions of web-based email and chat messages are sent over the Internet every day. However, very few service providers support end-to-end privacy protection. While providing security for these messages is technically feasible, usability remains a challenge in this field. Recent research attempts to hide security details like key management and encryption in order to make the system more usable. However usability studies demonstrated that hiding these details may confuse the user and contribute to mistakes (e.g., sending out an email in plaintext when the user thought it would be encrypted). I
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Norman, Kelly Robert. "Encryption of Computer Peripheral Devices." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1232.pdf.

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Ahlström, Henrik, and Karl-Johan Skoglund. "Encryption in Delocalized Access Systems." Thesis, Linköping University, Department of Science and Technology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-10528.

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<p>The recent increase in performance of embedded processors has enabled the use of computationally heavy asymmetric cryptography in small and power efficient embedded systems. The goal of this thesis is to analyze whether it is possible to use this type of cryptography to enhance the security in access systems.</p><p>This report contains a literature study of the complications related to access systems and their functionality. Also a basic introduction to cryptography is included.</p><p>Several cryptographic algorithms were implemented using the public library LibTomCrypt and benchmarked on a
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Kothapalli, Purushotham. "Secure storage of encryption keys." Thesis, Linköping University, Department of Electrical Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-9062.

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<p>The purpose of this thesis work was to make a survey of presently existing devices available in the market to store encryption keys; how the hacker intrudes into the device; what are the attacks behind</p><p>theft of the keys; how can we store encryption keys securely?</p><p>To achieve this purpose, an overview of the storage devices and attacks made by hackers was acquired through academic books and papers, Internet sites and magazines. Basic cryptography and related</p><p>algorithms were studied for the purpose of knowing how the encryption key is generated from these algorithms.</p><p>Un
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Sarma, Dhiman. "Security of Hard Disk Encryption." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-98673.

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Encryption is the art of preserving confidentiality of digital information. It is considered to be one of the most ideal solutions for providing data confidentiality and safety of computer hard disk. Many disk encryption software are commercially available with a variety of features. But how much effective security is provided by those software is the ultimate question. Encryption algorithms used by those software are vulnerable to known cryptanalysis. Design and implementation weaknesses critically leave backdoors inside those software themselves. Easy and smart methods are used to defeat the
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Denning, Daniel. "Encryption systems for FPGA computing." Thesis, University of Glasgow, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438606.

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Nordwall, Jennifer. "Software Encryption in Mobile Devices." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-18656.

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Luque, González Jorge, and Fernandez Ignacio Arenchaga. "Data Encryption on a Network." Thesis, Linnéuniversitetet, Institutionen för datavetenskap, fysik och matematik, DFM, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-9352.

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In this project you can find a study about different encryption algorithms, which are use to safeguard the information on messages over the network. We have developed a client-server application which will send information through the network which has to be secured. There are two kinds of encryption algorithms, the symmetric and the asymmetric key algorithms. Both were used to establish the communication, the asymmetric algorithm (RSA) is used to set up a symmetric key and then, all the communication process is done only with the symmetric algorithm (Blowfish).<br>En este proyecto encontraras
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Anderson, Kristin. "Tree Structures in Broadcast Encryption." Licentiate thesis, Linköping : Linköpings universitet, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-4651.

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21

Zhang, Long. "Attribute based encryption made practical." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/42138.

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Ciphertext-Policy Attribute Based Encryption (CP-ABE) is a promising method for end-to-end, fine grained access control. However, based on our knowledge, there is no massive deployment of CP-ABE based systems. Expensive and insecure key revocation should be one of the major reasons. In this thesis, we hypothesize that key revocation can be performed client side by combining existing trust computing technologies and validate this hypothesis with a prototype file system called ABFS. ABFS uses CP-ABE to do client side access control, at the same time, provide strong assurance on key revocation. E
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Alperin-Sheriff, Jacob. "Towards practical fully homomorphic encryption." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53951.

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Fully homomorphic encryption (FHE) allows for computation of arbitrary func- tions on encrypted data by a third party, while keeping the contents of the encrypted data secure. This area of research has exploded in recent years following Gentry’s seminal work. However, the early realizations of FHE, while very interesting from a theoretical and proof-of-concept perspective, are unfortunately far too inefficient to provide any use in practice. The bootstrapping step is the main bottleneck in current FHE schemes. This step refreshes the noise level present in the ciphertexts by homomorphically ev
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Wang, Han. "Homomorphic Encryption on the IoT." Thesis, Mittuniversitetet, Avdelningen för informationssystem och -teknologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-33998.

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Security is always a big problem in IoT (internet of things),when it comes to IoT, there must have cloud computing because many devices in IoT are small embedded devices and they don’t always have enough power to finish some complex calculations. Then, they need to take advantage of a third party system especially cloud at present to finish some operations, but the cloud is not safe enough now, in which some important and private information may be leaked, then people introduce homomorphic encryption which can do calculation on encrypted data. To meet the modern needs for random calculations i
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Muralidharan, Vaishali. "Logic Encryption Using Dynamic Keys." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1613751124204643.

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Khati, Louiza. "Full disk encryption and beyond." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLEE047.

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Cette thèse est dédiée à l’analyse de modes opératoires pour la protection des disques durs. Dans un premier temps, l’analyse des modes opératoires permettant de protéger la confidentialité des données est réalisée dans le modèle Full Disk Encryption (FDE). Ce modèle est très contraignant puisqu’il exclut tout mode qui ne conserve pas la longueur (la valeur en clair et chiffrée du secteur doivent avoir la même taille) et seuls des modes déterministes peuvent avoir cette propriété. Néanmoins, il est possible de tirer partie d’une valeur du système nommée le diversifiant, qui originellement a un
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Thulasi, Raman Sudheer Ram. "Logic Encryption of Sequential Circuits." University of Cincinnati / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1553251689992143.

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Bowley, James. "Sparse image representation with encryption." Thesis, Aston University, 2013. http://publications.aston.ac.uk/20914/.

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In this thesis we present an overview of sparse approximations of grey level images. The sparse representations are realized by classic, Matching Pursuit (MP) based, greedy selection strategies. One such technique, termed Orthogonal Matching Pursuit (OMP), is shown to be suitable for producing sparse approximations of images, if they are processed in small blocks. When the blocks are enlarged, the proposed Self Projected Matching Pursuit (SPMP) algorithm, successfully renders equivalent results to OMP. A simple coding algorithm is then proposed to store these sparse approximations. This is sho
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Al-Hassan, Salah Yousif Radhi. "Asymmetric encryption for wiretap channels." Thesis, University of Plymouth, 2015. http://hdl.handle.net/10026.1/3765.

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Since the definition of the wiretap channel by Wyner in 1975, there has been much research to investigate the communication security of this channel. This thesis presents some further investigations into the wiretap channel which improve the reliability of the communication security. The main results include the construction of best known equivocation codes which leads to an increase in the ambiguity of the wiretap channel by using different techniques based on syndrome coding. Best known codes (BKC) have been investigated, and two new design models which includes an inner code and outer code
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Goh, Eu-Jin. "Encryption schemes from bilinear maps /." May be available electronically:, 2007. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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Chieco, Davide. "L'algoritmo advanced encryption standard (AES)." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7274/.

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Cetin, Gizem S. "Applications of Fully Homomorphic Encryption." Digital WPI, 2019. https://digitalcommons.wpi.edu/etd-dissertations/526.

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Homomorphic encryption has progressed rapidly in both efficiency and versatility since its emergence in 2009. Meanwhile, a multitude of pressing privacy needs --- ranging from cloud computing to healthcare management to the handling of shared databases such as those containing genomics data --- call for immediate solutions that apply fully homomorpic encryption (FHE) and somewhat homomorphic encryption (SHE) technologies. Recent rapid progress in fully homomorphic encryption has catalyzed renewed efforts to develop efficient privacy preserving protocols. Several works have already appeared in
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Xia, Andrew. "Thresholdizing lattice based encryption schemes." Thesis, Massachusetts Institute of Technology, 2018. https://hdl.handle.net/1721.1/121688.

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This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2019<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 77-80).<br>In this thesis, we examine a variety of constructions based on secret sharing techniques applied on lattice-based cryptographic primitives constructed from the learning with erros (LWE) assumption. Using secret shar
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Islam, Rabib. "Quantum Encryption with Certified Deletion." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/40095.

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In the context of classical information, every message is composed of 0s and 1s; these messages can generally be copied at will. However, when quantum phenomena are used to model information, this guarantee no longer exists. This difference gives rise to a range of cryptographic possibilities when one considers encoding certain messages as quantum information. In our case, we analyze a potential benefit of encoding part of an encryption scheme’s ciphertext as quantum information. We call this type of ciphertext a quantum ciphertext. In particular, quantum ciphertexts are useful when one wants
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Cathebras, Joël. "Hardware Acceleration for Homomorphic Encryption." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS576/document.

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Dans cette thèse, nous nous proposons de contribuer à la définition de systèmes de crypto-calculs pour la manipulation en aveugle de données confidentielles. L’objectif particulier de ce travail est l’amélioration des performances du chiffrement homomorphe. La problématique principale réside dans la définition d’une approche d’accélération qui reste adaptable aux différents cas applicatifs de ces chiffrements, et qui, de ce fait, est cohérente avec la grande variété des paramétrages. C’est dans cet objectif que cette thèse présente l’exploration d’une architecture hybride de calcul pour l’accé
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Sun, Dongdong. "Predicate encryption with various properties." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/60301/1/Dongdong_Sun_Thesis.pdf.

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Predicate encryption (PE) is a new primitive which supports exible control over access to encrypted data. In PE schemes, users' decryption keys are associated with predicates f and ciphertexts encode attributes a that are specified during the encryption procedure. A user can successfully decrypt if and only if f(a) = 1. In this thesis, we will investigate several properties that are crucial to PE. We focus on expressiveness of PE, Revocable PE and Hierarchical PE (HPE) with forward security. For all proposed systems, we provide a security model and analysis using the widely accepted computat
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Bopardikar, Ajit S. "Speech Encryption Using Wavelet Packets." Thesis, Indian Institute of Science, 1995. https://etd.iisc.ac.in/handle/2005/153.

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The aim of speech scrambling algorithms is to transform clear speech into an unintelligible signal so that it is difficult to decrypt it in the absence of the key. Most of the existing speech scrambling algorithms tend to retain considerable residual intelligibility in the scrambled speech and are easy to break. Typically, a speech scrambling algorithm involves permutation of speech segments in time, frequency or time-frequency domain or permutation of transform coefficients of each speech block. The time-frequency algorithms have given very low residual intelligibility and have attracted m
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Bopardikar, Ajit S. "Speech Encryption Using Wavelet Packets." Thesis, Indian Institute of Science, 1995. http://hdl.handle.net/2005/153.

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The aim of speech scrambling algorithms is to transform clear speech into an unintelligible signal so that it is difficult to decrypt it in the absence of the key. Most of the existing speech scrambling algorithms tend to retain considerable residual intelligibility in the scrambled speech and are easy to break. Typically, a speech scrambling algorithm involves permutation of speech segments in time, frequency or time-frequency domain or permutation of transform coefficients of each speech block. The time-frequency algorithms have given very low residual intelligibility and have attracted muc
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Basavarasu, Srinivasa R. "Voice and Image Encryption, and, Performance Analysis of Counter Mode Advanced Encryption Standard for WiMAX." University of Toledo / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1376636620.

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Jolfaei, Alireza. "Robust Encryption Schemes for 3D Content Protection." Thesis, Griffith University, 2016. http://hdl.handle.net/10072/367353.

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Since the 1970s, a large number of encryption schemes have been proposed, among which some have been standardised and widely adopted all over the world, such as data encryption standard (DES) and advanced encryption standard (AES). However, due to the special features of three-dimensional (3D) content, these encryption standards are not a suitable solution for 3D ap- plications. The problem of 3D content encryption is beyond the application of established and well-known encryption algorithms. This is primarily due to the structure of 3D content and the way it is used commercially. Unlike data
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Franzoni, Alice. "Fully Homomorphic Encryption e Possibili Applicazioni." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13568/.

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L'argomento di cui tratta questa tesi è il modello proposto da Craig Gentry per ottenere uno schema di crittografia fully homomorphic, ovvero uno schema di crittografia che permetta di eseguire operazioni arbitrarie sui dati cifrati senza essere prima costretti a decifrarli. L'idea è quella di prendere uno schema somewhat homomorphic, cioè in grado di eseguire solo operazioni di complessità molto limitata sui dati cifrati, e renderlo bootstrappable, ovvero capace di valutare circuiti più complessi del proprio circuito di decrittazione. Saranno esaminate le caratteristiche che deve possedere
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Nalli, Michele. "Libvdeplug_agno: Ethernet encryption su reti virtuali." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/17340/.

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In questo elaborato si descrive l'implementazione di libvdeplug_agno: un modulo crittografico per VDE4 che permette di cifrare il traffico di una rete virtuale VDE. Libvdeplug_agno è nato dalla necessità di avere uno strumento crittografico da poter usare in simbiosi con VXVDE per poter permettere agli utenti non amministratori di avere accesso shell alla macchina fisica con accesso alla rete reale. Per poter essere usato efficacemente con VXVDE questo strumento è stato progettato per richiedere una configurazione minima. Libvdeplug_agno può essere usato anche in connessioni point-to-point in
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Uehara, Takeyuki. "Contributions to image encryption and authentication." Access electronically, 2003. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20040920.124409/index.html.

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McLoone, M. P. "Generic silicon architectures for encryption algorithm." Thesis, Queen's University Belfast, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269123.

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Fahmy, A. "Data encryption of communication data links." Thesis, University of Kent, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.385199.

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Lord, Sébastien. "Uncloneable Quantum Encryption via Random Oracles." Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/38855.

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One of the key distinctions between classical and quantum information is given by the no-cloning theorem: unlike bits, arbitrary qubits cannot be perfectly copied. This fact has been the inspiration for many quantum cryptographic protocols. In this thesis, we introduce a new cryptographic functionality called uncloneable encryption. This functionality allows the encryption of a classical message such that two collaborating but non-communicating adversaries may not both simultaneously recover the message, even when the encryption key is revealed. We achieve this functionality by using Wiesner
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Hung, Shirley Kon-Jean. "U.S. export controls on encryption technology." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/28754.

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Includes bibliographical references (p. 111-118).<br>Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Political Science, 2004.<br>(cont.) effort that eventually paid off in 1999. Interest group politics also factors into the actions of the national security establishment as they also lobby the Presidency and Congress to maintain restrictive encryption regulations. The study uses organizational culture to explain the motivations and some of the actions of the NSA, particularly with regard to its preference for secrecy, its placement of national security above other values, and its
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Yang, Yang M. Eng Massachusetts Institute of Technology Department of Electrical Engineering and Computer Science. "Evaluation of somewhat homomorphic encryption schemes." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/85530.

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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 65-66).<br>Homomorphic encryption allows one to outsource expensive computation to an untrusted party while keeping data in an encrypted form. While there has been a growing research focus in fully homomorphic encryption schemes, many real-world applications require a scheme to be only "somewhat" homomorphic. Somewhat homomorphic encryption (SWHE) schemes, which support a limited number of
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48

Steele, Corre. "Popping Bubbles: Cryptanalysis of Homomorphic Encryption." Digital WPI, 2016. https://digitalcommons.wpi.edu/etd-theses/453.

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Imagine an encryption scheme where it is possible to add and multiply numbers without any knowledge of the numbers. Instead one could manipulate encryptions of the numbers and then the decryption of the result would give the result of the arithmetic on the original numbers. Encryption algorithms with this property are called homomorphic and have various applications in cloud computing. Homomorphic encryption schemes exist but are generally so inefficient that they are not practical. This report introduces a toy cryptosystem called Bubbles: a somewhat homomorphic encryption scheme created by Pr
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49

SILVA, Caio César Sabino. "Motion compensated permutation-based video encryption." Universidade Federal de Pernambuco, 2015. https://repositorio.ufpe.br/handle/123456789/23821.

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Submitted by Rafael Santana (rafael.silvasantana@ufpe.br) on 2018-02-21T17:49:09Z No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) dissertacao-caio-cesar.pdf: 1833894 bytes, checksum: 738a1e0a2b6bcf2f5c13dca42eaee10c (MD5)<br>Made available in DSpace on 2018-02-21T17:49:09Z (GMT). No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) dissertacao-caio-cesar.pdf: 1833894 bytes, checksum: 738a1e0a2b6bcf2f5c13dca42eaee10c (MD5) Previous issue date: 2015-08-25<br>In the context of multimedia applications se
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De, Castro Leo(Leo Ramón Nathan). "Practical homomorphic encryption implementations & applications." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/129883.

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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, February, 2020<br>Cataloged from student-submitted PDF of thesis.<br>Includes bibliographical references (pages 67-69).<br>Homomorphic encryption is an exciting technology that enables computations to be performed over encrypted data. While initial constructions were impractical, recent works have enabled eciency necessary for many practical application. In this thesis, we present a new library for homomorphic encryption and two of applications built on this library. The first app
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