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Secure Transport of NetFlow Data
Ručka, Tomáš ; Halfar, Patrik (referee) ; Grégr, Matěj (advisor)
The aim of my bachalor's thesis is secure transport NetFlow data. Communication in NetFlow is not protected against unauthorized intrusion, in addition works over UDP protocol which is protocol that allows data loss. The aim of this work is to create an encrypted tunnel through which communication will take place between the exporter and collector.
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Medical Software for Accounting
Pohl, Ondřej ; Veselý, Vladimír (referee) ; Grégr, Matěj (advisor)
The aim of this thesis is an extension of medical software OpenDositech. Implementation of interface for communication with portals of insurance companies is extension into OpenDositech program. In the first part available medical softwares are described together with API for sending. The thesis next deals with the Portal of insurance companies. At the end the thesis describes implementation of the API into OpenDositech program.
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Lab of public key infrastructure
Slavík, Petr ; Lambertová, Petra (referee) ; Burda, Karel (advisor)
The aim of this thesis is to study and describe the theme of Public Key Infrastructure (PKI). Within the scope of minute PKI characterization there is a gradual depiction of particular structural elements, which are above all represented by cryptographic operations (asymetric and symetric cryptography, hash function and digital signature); then, there are also individual PKI subjects that are dealt with, like eg. certification authority, certificates, security protocols, secure heap etc. Last but not least there are a few complete Public Key Infrastructure implementation solutions described (OpenSSL, Microsft CA). The practical part of the thesis, a lab exercise, gives potential students the knowledge of installing OpenSSL system based certification authority. The next task educate students how to secure web server with certificate signed with own CA and also how to secure web server users‘ access control through certificates signed by the previously installed CA.
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Software for Management of Data Mailboxes
Janečka, Petr ; Bartík, Vladimír (referee) ; Očenášek, Pavel (advisor)
This bachelor's thesis deals with the analysis of the actual state of electronic government. It describes its individual sections and their problems. Also, it focuses on information technologies employed in eGovernment and describes their implementation. It elaborates on related legislature and its practical application. Part of the thesis is an analysis of data mailboxes. Pivotal section comprises design and implementation of a program which substitutes the original interface for data mailboxes operation.
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Creating a Secure Company in the Selected Industry
Kyselka, Petr ; Tesař, Rostislav (referee) ; Jurová, Marie (advisor)
This diploma thesis deals with the investigation of possible dangers threatening human health+ that may arise during activities in the construction company P&P Stavební společnost and the health and safety management system in the company. The introductory chapter introduces the construction company and its focus. The next chapter presents the theoretical background and concepts occurring in the thesis. In the following chapter, the risks of a specific company order were identified and quantified using the FMEA method, and the completed "Check-list" required to obtain the Safe Company certificate is given. Lastly, there are proposed solutions to reduce the identified risks and to successfully obtain the Safe Company certificate.
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Electronic Mail Room of the BUT
Beran, Martin ; Křena, Bohuslav (referee) ; Marušinec, Jaromír (advisor)
This dissertation thesis attends to problems of electronic registry for VUT. It deals with the principal of electronic registry functioning, electronic signature and it compares offer of the commercial registries. It goes in for the proposal and implementation of the electronic registry for VUT. Since the using of the e- registry on all public service Office was legalized the people can avoid long queues and the employees are avoided from the stress before dead lines. By the communication through the electronic registry is very important the electronical signature. It is almost a full-valued and lawful alternative to the physical signature. For its safety and utility this system employes asymmetric codes and hash algorithm. Presently in many states, where the electronical signature is legalized it is used together with standard X 509 which defines the format of certificates, organization and action of certification authorities. The certification autority ensures safe connection of the person and general key for using of the electronical signature.
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Anonymous communication on the internet
Hořejš, Jan ; Babnič, Patrik (referee) ; Rosenberg, Martin (advisor)
The objective of this master’s thesis was to describe current capabilities of anonymous browsing over the Internet. The theoretical part focuses on three main methods of anonymization with main focus on Tor network. The master‘s thesis describes advantages and disadvantages of different solutions and possible attacks on them. In the next part is demonstrated Tor network, implementation of Hidden service and secured access to the server for clients and possible attacks against this proposal. The work also includes the results of measurements of all three anonymizers and the effects on their speed.
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Electronic signature in practice
Miška, Matěj ; Burda, Karel (referee) ; Člupek, Vlastimil (advisor)
This bachelor's thesis deals with the creation and development of a system for management and security of digital certificates used for signing documents. The application created in this thesis is conceptualised as a console application used from command line of a system. This solution is justified by the possibility of being continued as a graphic user interface extension or adopted by another application. The application allows for the creation of a user account, through which a person can import their certificates with passwords into the application and subsequently use the certificates in signing PDF documents or PNG files. Algorithms ensuring the security of saved data are implemented by the application. The theoretical part of this thesis analyzes the creation and work with certificates and signature keys in real life, including the creation of own self-signed certificate. The theoretical part concludes with the testing of usage of the certificates.
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Interception of Modern Encrypted Protocols
Marček, Ján ; Korček, Pavol (referee) ; Kajan, Michal (advisor)
This thesis deals with the introduction to the security mechanism.The procedure explains the basic concepts, principles of cryptography and security of modern protocols and basic principles that are used for information transmission network. The work also describes the most common types of attacks targeting the eavesdropping of communication. The result is a design of the eavesdropping and the implementation of an attack on the secure communication of the SSL protocol..The attacker uses a false certificate and attacks based on poisoning the ARP and DNS tables for this purpose. The thesis discusses the principles of the SSL protocol and methodology of attacks on the ARP and DNS tables.
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