To see the other types of publications on this topic, follow the link: Rijndael.
Dissertations / Theses on the topic 'Rijndael'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 18 dissertations / theses for your research on the topic 'Rijndael.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Pehlivanoglu, Serdar. "Rijndael Circuit Level Cryptanalysis." Link to electronic thesis, 2005. http://www.wpi.edu/Pubs/ETD/Available/etd-050505-121816/.
Full textAbstract:
Thesis (M.S.) -- Worcester Polytechnic Institute.Keywords: private-key cryptography; Advanced Encryption Standard; K-secure; hermetic; block cipher; circuit complexity. Includes bibliographical references (p. 75-79).
2
BARROS, Sergio Augusto Prazin de. "O Cripto-Sistema Rijndael." Universidade Federal de Pernambuco, 2003. https://repositorio.ufpe.br/handle/123456789/5536.
Full textAbstract:
Made available in DSpace on 2014-06-12T17:40:05Z (GMT). No. of bitstreams: 2
arquivo7003_1.pdf: 1416346 bytes, checksum: 468f0d3be0f696b3a85cf8ca164f5d04 (MD5)
license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5)
Previous issue date: 2003Com a evolução da velocidade dos processadores modernos, usar cifras de bloco de comprimento 56 bits para a chave, como no Padrão de Cifragem de Dados (Data Encryption Standard DES), tornou-se menos seguro. Pensando neste sentido, foi feito um concurso, iniciado em 1998, pelo Instituto Nacional de Padrões e Tecnologia (National Institute of Standards and Technology NIST) do governo dos EUA para escolher um novo algoritmo criptográfico para substituir o antigo padrão. Em outubro de 2000 foi divulgado o resultado, o Rijndael tornou-se o Padrão Avançado de Cifragem (Advanced Encryption Standard AES). O AES é uma cifra de bloco iterativa cujo comprimento da chave é variável: 128, 192 ou 256 bits, operando sobre um bloco de 128 bits. Sua estrutura é baseada em transformações que utilizam a álgebra de corpos finitos, mais especificamente GF(256). Suas rodadas são seqüências de transformações provedoras dos requisitos básicos para uma cifra segura do ponto de vista criptográfico: confusão e difusão. Suas implementações nas mais diversas plataformas são velozes e ocupam pouca memória. Pode ser considerada uma cifra segura contra ataques de criptoanálise pois não existe nenhum ataque conhecido cujo desempenho seja melhor do que a busca exaustiva da chave. Esta dissertação é o resultado de um trabalho de pesquisa minucioso que revela de forma clara, mas sem excesso de rigores matemáticos, os detalhes do funcionamento, implementação, segurança e uso do Rijndael, servindo como instrumento para interessados na área de criptografia. Ele apresenta também uma implementação prática e didática da cifra, além da proposta e análise de uma função hash baseada no algoritmo
3
Banionis, Mindaugas. "Rijndael simetrinio šifravimo algoritmo tyrimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110901_135849-39782.
Full textAbstract:
Šiuolaikinės technologis tobulėja labai sparčiai – itin greiti dedikuoti serveriai, didelio pralaidumo interneto kanalai, leidžia vis daugiau taikomųjų programų perkelti į virtualią erdvę, vadinamą „Debesų kompiuterija“. Šioje erdvėje vykstantys procesai užtikrina, kad visi viešinami kompiuteriniai resursai, pvz., programinė ir techninė įranga bei interneto srautas būtų optimaliai paskirstytas. Tai suteikia palankias sąlygas atsirasti naujoms paslaugoms: daugialypės informacijos transliavimas, dokumentų redagavimas internete ir pan. Tokio tipo paslaugos yra paremtos „plono kliento“ architektūra, kuri ypač svarbi mobiliesiems įrenginiams. Pagrindinis šios architektūros privalumas – taikomosios programos, kurioms reikia daug skaičiavimo išteklių, gali būti vykdomos serveriuose, o rezultatai pateikiami mobiliųjų įrenginių ekranuose. Faktas, jog programos nėra vykdomos mobiliajame įrenginyje, sumažina tikimybę, jog svarbi informacija bus užkrėsta virusų, kirmėlių.
Tarp daugelio egzistuojančių mobiliųjų įrenginių problemų, noriu išskirti dvi: energijos sąnaudos ir informacijos apsauga. Pirmoji problema egzistuoja dėl neadekvataus progreso tarp kompiuterinių resursų ir baterijos energijos talpos (pvz., procesoriaus sparta per kelis metus padidėja keletą kartų, tačiau baterijos energijos talpa padvigubinama tik kartą į dekadą). Antroji problema yra artymai susijusi su pirmąją. Šiandien žmonės nori dirbti įvairiose vietose, tad atsiranda grėsmė, jog mobilus įrenginys, įskaitant... [toliau žr. visą tekstą]Nowadays technologies are being improved rapidly – extremely fast dedicated servers, high internet and network throughput, enables more and more applications to be moved to a virtual space, which is called ‘Cloud computing’. Cloud computing is responsible that all shared computer resources, like Software, Hardware and Network would be allocated for services in optimal way. This feature enables to appear new services, like media streaming, documents editing online etc. This kind of services are based on ‘Thin client’ architecture, which is especially important for mobile devices. Main feature of this architecture is that applications which require many computations, now can be executed in dedicated servers and results can be displayed in mobile device screen. Fact, that aplication is not executed in mobile device environment decreases probability that important information will be infected by viruses, worms etc. However, between many existing problems with mobile devices there are two major which should be stated in the first place: energy consumption and information security. The first issue is due to inadequate progress of computational resources and battery energy power (e.g., CPU speed, memory capacity is being increased several times within a few years, while battery power doubles only in a decade). The second issue is closely related with the first one. Today people want to work anywhere, so there is abillity that mobile devices including important information could... [to full text]
4
Vaicekauskas, Gytis. "Rijndael šifravimo algoritmo realizavimas ir modifikavimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2013. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130807_145617-34991.
Full textAbstract:
Šiame magistro darbe pateikiama Rijndael šifravimo algoritmo analizė, realizavimo pavyzdžiai, taip pat pateikiama modifikacija ir atliekamas šifrogramų, gautų naudojant standartizuotą ir modifikuotą Rijndael algoritmus, tyrimas.In this master thesis provided analysis of Rijndael chipher algorithm and realization examples, also proposed modification and then provided tests of chiphers that has been calculated using standard and modified algorithms.
5
Noroozi, Hamid. "Alternative Polynomials for Rijndael : Diffusion Analysis." Thesis, Linnéuniversitetet, Institutionen för datavetenskap (DV), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-36304.
Full textAbstract:
The Rijndael cryptosystem uses a particular polynomial to create its constants. All calculations within the encryption and decryption layers are based on this polynomial. This arouse the curiosity to see what happens if the polynomial is substituted by other polynomials. This paper’s main area of study is to investigate the consequences of using different polynomials to construct the Rijndael cryptosystem. To do so, as a phase of this study, a Mathematica package has been created to ease the investigations. As the second phase, using the aforementioned package, some kind of diffusion analysis has been done on the newly constructed Rijndael-like cryptosystems. The fundamental challenge was to figure out the reason of having the particular polynomial chosen. By the end of the experiment, we concluded that choosing other polynomials with the same characteristics as an ingredient of the Rijndael algorithm, does not have any perceptible effects on the diffusion level.
6
Sever, Refik. "High Speed Vlsi Implementation Of The Rijndael Encryption Algorithm." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1124338/index.pdf.
Full textAbstract:
This thesis study presents a high speed VLSI implementation of the Rijndael Encryption Algorithm, which is selected to be the new Advanced Encryption Standard (AES) Algorithm. Both the encryption and the decryption algorithms of Rijndael are implemented as a single ASIC. Although data size is fixed to 128 bits in the AES, our implementation supports all the data sizes of the original Rijndael Algorithm. The core is optimised for both area and speed. Using 149K gates in a 0.35-µm standard CMOS process, 132 MHz worst-case clock speed is achieved yielding 2.41 Gbit/s non-pipelined throughput in both encryption and decryption. iii The design has a latency of 30 clock periods for key expansion that takes 228 ns for this implementation. A single encryption or decryption of a data block requires at most 44 clock periods. The area of the chip is 12.8 mm2 including the pads. 0.35-µ
m Standard Cell Libraries of the AMI Semiconductor Company are used in the implementation. The literature survey revealed that this implementation is the fastest published non-pipelined implementation for both encryption and decryption algorithms.
7
Kosaraju, Naga M. "A VLSI Architecture for Rijndael, the Advanced Encryption Standard." [Tampa, Fla.] : University of South Florida, 2003. http://purl.fcla.edu/fcla/etd/SFE0000163.
Full text
8
Manteena, Rajender. "A VHDL implementation of the Advanced Encryption Standard-Rijndael Algorithm." [Tampa, Fla.] : University of South Florida, 2004. http://purl.fcla.edu/fcla/etd/SFE0000296.
Full text
9
Manteena, Rajender. "A VHDL Implemetation of the Advanced Encryption Standard-Rijndael Algorithm." Scholar Commons, 2004. https://scholarcommons.usf.edu/etd/1149.
Full textAbstract:
The National Institute of Standards and Technology (NIST) has initiated a process to develop a Federal information Processing Standard (FIPS) for the Advanced Encryption Standard (AES), specifying an Advanced Encryption Algorithm to replace the Data Encryption standard (DES) the Expired in 1998. NIST has solicited candidate algorithms for inclusion in AES, resulting in fifteen official candidate algorithms of which Rijndael was chosen as the Advanced Encryption Standard.
The Advanced Encryption Standard can be programmed in software or built with pure hardware. However Field Programmable Gate Arrays (FPGAs) offer a quicker, more customizable solution. This research investigates the AES algorithm with regard to FPGA and the Very High Speed Integrated Circuit Hardware Description language (VHDL). Altera Max+plus II software is used for simulation and optimization of the synthesizable VHDL code. All the transformations of both Encryptions and Decryption are simulated using an iterative design approach in order to minimize the hardware consumption. Altera ACEX1K Family devices are utilized for hardware evaluation.
10
Orgill, Gregory Leavitt. "Java Performance of the Rijndael Encryption Algorithm Across Compilers and Virtual Machines." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd681.pdf.
Full text
11
Barcelos, Marcelo Boeira de. "Soft IP para criptografia usando o algoritmo Rijndael e implementação em lógica programável." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2002. http://hdl.handle.net/10183/3061.
Full textAbstract:
A criptografia assumiu papel de destaque no cotidiano das pessoas, em virtude da necessidade de segurança em inúmeras transações eletrônicas. Em determinadas áreas, a utilização de hardware dedicado à tarefa de criptografia apresenta vantagens em relação à implementação em software, devido principalmente ao ganho de desempenho. Recentemente, o National Institute of Standards and Technology (NIST) publicou o novo padrão norte-americano de criptografia simétrica, chamado de Advanced Encryption Standard (AES). Após um período de aproximadamente 3 anos, no qual várias alternativas foram analisadas, adotou-se o algoritmo Rijndael. Assim, este trabalho apresenta um Soft IP do padrão AES, codificado em VHDL, visando a implementação em FPGA Altera. Todo o projeto foi construído com funções e bibliotecas genéricas, a fim de permitir a posterior implementação sobre outras tecnologias. Foram geradas duas versões: uma priorizando desempenho e outra priorizando a área ocupada nos componentes. Para cada uma das versões, produziu-se um circuito para encriptar e outro para decriptar. O desempenho alcançado em termos de velocidade de processamento superou todos os outros trabalhos publicados na área, sobre a mesma tecnologia. São apresentados os detalhes de implementação, arquiteturas envolvidas e decisões de projeto, bem como todos os resultados. A dissertação contém ainda conceitos básicos de criptografia e uma descrição do algoritmo Rijndael.
12
Chieco, Davide. "L'algoritmo advanced encryption standard (AES)." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7274/.
Full text
13
Kandi, Jayavardhan R. "Embedded Cryptography: An Analysis and Evaluation of Performance and Code Optimization Techniques for Encryption and Decryption in Embedded Systems." [Tampa, Fla.] : University of South Florida, 2003. http://purl.fcla.edu/fcla/etd/SFE0000151.
Full text
14
Hradil, David. "Hardwarová akcelerace šifrování." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2007. http://www.nusl.cz/ntk/nusl-235513.
Full textAbstract:
The goal of this thesis is to design a hardware realization of circuit which will implement the AES algorithm. A motivation was to make an acceleration against the classic software encryption. The acceleration is achieved by special designed parts of the circuit, which correspond to particular operations of the AES algorithm. First, there was necessary to design the circuit. In the next step there was a need to describe the designed circuit by the VHDL language. Then the circuit was simulated and synthesized. Due to comparing the circuit with software processing a software implementation was created. Both implementations were created for the FITKit platform. The hardware implementation is made by the FPGA technology and the software implementation is realized in a microcontroller. The result of the thesis is almost one thousandfold acceleration against the classic software encryption.
15
Ahlstedt, Sebastian, and Karlsson David Granath. "Diskkrypteringsprestanda i GNU/Linux." Thesis, Linnéuniversitetet, Institutionen för datavetenskap (DV), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-26411.
Full textAbstract:
This thesis compares the impact on disk performance in a GNU/Linux environmentwith three encryption algorithms: AES, Serpent and Twofish in three different implementations: DM-crypt, Loop-AES and Truecrypt. For all three algorithms a key length of 256 bits is used. The thesis shows that the least performance impact during data encryption, and thus file writing, is reached by using AES or Twofish encryption implemented in DM-crypt or TrueCrypt. The thesis shows that some data operations with a sufficiently low processor utilization barely affects disk performance at all if encrypted using the optimal implementation and algorithm. It is also discovered that the performance impact during data decryption, or file reading, can be minimized by using the most efficient implementation and algorithm. The best results are met with the AES or Twofish cipher, regardless of implementation. An important conclusion that is drawn is that it is hard to determine a superior encryption solution for all purposes. However, by reviewing and examining the collected data from all aspects of disk performance the AES implementation in TrueCrypt is, with small marginals, determined to be the most optimal.Undersökningen jämför hur krypteringsalgoritmerna AES, Serpent och Twofish implementerade i DM-crypt, Loop-AES och TrueCrypt påverkar diskprestandan i en GNU/Linux-miljö. Samtliga krypteringsalgoritmer tillämpas med en nyckellängd på 256 bitar. Undersökningen visar att högst skrivhastighet och således krypteringshastighet uppnås med algoritmerna AES och Twofish i DM-crypt eller Truecrypt. Krypteringens påverkan på diskprestanda är beroende av vilka typer av operationer som utförs och hur hög processorsysselsättningsgraden är. Vid simplare I/O-operationer har den mest optimala krypteringslösningen knappt någon påverkan på diskprestandan överhuvudtaget. Undersökningen visar också att påverkan av prestanda vid dekryptering är minst vid tillämpning av AES eller Twofish oavsett implementering. En viktig slutsats som dras är att det inte finns en överlägsen krypteringslösning för samtliga användningsområden. Genom att sammanställa och granska insamlad data gällande samtliga aspekter beträffande diskprestanda fastställs TrueCrypts implementation av AES till att vara den mest optimala, trots små marginaler.
16
Chen, Jun-Zhe, and 陳濬哲. "The Research of Rijndael Against Physical Cryptanalyses." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/74544625094114121624.
Full textAbstract:
碩士國立中央大學
資訊工程研究所
90
Nowadays, digital information grows extremely in our daily life, and the importance of information security increases correspondingly. People always protects information transferred in the untrusted channel from leakage by cryptographic algorithms. However, when these cryptosystems are operated in the open environment, no one can ensure the ecurity of information even information is protected by cryptosystems. The Advanced Encryption Standard (AES) selected by NIST of the United States will become the most widespread block cipher standard. In this thesis, its strength against physical cryptanalyses, specially the power analysis and the differential fault analysis will be discussed. In Chapter 4, an application of the differential fault analysis on the AES are considered. In order to defend the AES from this attack, the weakness of the AES are analyzed, and some mprovement of the AES structures are proposed. Finally, in order to defend the AES against the timing attack, possible countermeasure is also discussed. Power analysis attacks are the most useful cryptanalyses at present, and it is also practicable on the AES. In Chapter 5, two types of power analyses attack on the AES are proposed. Similarly, in order to defend against power analyses, some countermeasures are considered, and some problems about the countermeasures are also discussed.
17
Nöbel, Lars. "Sicherheitsaspekte kryptographischer Verfahren beim Homebanking." 2002. https://ul.qucosa.de/id/qucosa%3A16460.
Full textAbstract:
In der vorliegenden Arbeit werden kryptographische Verfahren und Protokolle vorgestellt, die im HBCI-Standard zum Einsatz kommen. Das Hauptaugenmerk liegt hierbei auf den derzeit verwendeten Algorithmen DES und RSA sowie deren möglichen Nachfolgern Rijndael und ElGamal mit elliptischen Kurven. Die dafür notwendigen mathematischen Grundlagen werden ebenso wie die grundlegenden Begriffe der Kryptographie eingeführt. Es wird auf Sicherheitsaspekte der untersuchten Algorithmen und auf die zukünftige Entwicklung eingegangen. Dabei stellt sich heraus, daß mit den benutzten Verfahren die Sicherheit der Kommunikationspartner nur unwesentlich bis gar nicht beeinträchtigt werden kann. Beim praktischen Einsatz existieren aber noch Lücken, die für einen Angriff ausgenutzt werden können.
18
Ďuránová, Elena. "Algebraická teorie S-boxů." Master's thesis, 2011. http://www.nusl.cz/ntk/nusl-297854.
Full textAbstract:
The thesis focuses on an algebraic description of S-boxes by the special type of quadratic equations, defined as biaffine equations. Biaffine equations satisfying S-boxes of higher order may not even exist. However, the special type of S-boxes en- ables to find such equations also for S-boxes of higher order. The S-box in the block cipher Rijndael, composed of the inverse function and the affine transformation, is an example of such special type of S-boxes. The thesis proves that a number of biaffine equations satisfying an S-box of this type does not depend on the affine function. The thesis also proves that for every S-box of order n formed by the in- verse function there exist at least 3n − 1 biaffine equations satisfying this S-box. 1