Phd thesis computer network security zone

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When a user wants to access certain services offered by some service provider, typically this user must first authenticate herself with the service provider, such that the service provider may grant authorization to access the services.

Authentication is the process through which this user provides confirmation of her identity to the service provider phd thesis computer network security zone, in parallel, the user should receive confirmation that the service provider is legitimate.

There are several types or factors of authenticators that can be utilized in this process.

phd thesis computer network security zone Each authentication factor has, in terms of security and user experience when compared to other factors, strong and weak aspects or pros and cons.

For instance, passwords must be long and random, but then remembering them can be infeasible; fingerprints are believed to be unique phd thesis computer network security zone thus form a good authenticator, but they are immutable and hardly confidential; token authenticators phd thesis computer network security zone out-of-band tokens zone as SMS tokens provide an ephemeral zone that is valuable for security, but the user might lose possession of the respective token device.

Research - Marcos Portnoi

Combining two or more of those authenticators results in a potential increased security as compared to utilizing only one authenticator, which is known as multi-factor authentication.

The dissertation focuses on multi-factor authentication. I present a cryptographic method to enable location as an authentication factor, using the flexibility of Ciphertext-Policy Attribute-Based Encryption CP-ABE click the following article its access policies, together with location beacons. Such that this location authenticator can be realized, I develop a technique to request and control the presentation of multi-factor authenticators, through which scores are assigned phd thesis computer network security zone each authenticator type and both the user and the authentication service are aware of a minimum score needed for full authentication.

Phd thesis computer network security zone address the necessity of a secure scheme through /scholarships-for-latino-high-school-seniors-2014.html a user presents the authenticators, I construct a method for conveying the authentication factors in a Zero-Knowledge Password Proof ZKPP scheme and through an ephemeral, confidential session.

The method also provides a secure joint authenticator that is the cryptographic composite built within ZKPP of the individual authenticators.

FATİH ERTAM

Phd thesis computer network security zone embody and realize these techniques, I devise a multi-factor authentication protocol named LOCATHEthrough which a user device zone user computer network security authenticate herself to an authentication service zone the location wherein the user or device is and other authentication factors, with guarantees of forward secrecy.

Moreover, I design a Location-Enhanced Multi-Factor Authentication Service Computer network securityabstracting hardware such as the location beacons phd thesis control into a layered structure, to provide the authentication services and support for the components of phd thesis computer network security zone dissertation.

Finally, I develop a Proof-of-Concept system, and essay process analysis an extensive security evaluation and analysis of the work herein. The typical sign-on or login procedure to a computer system involves a user entering a username and password by means of a keyboard.

This authentication scheme is based on requesting a piece of information that only the computer and the user know. Its security relies on the difficulty, for an attacker, in obtaining or guessing the password.

PhD in cyber security:

This presents a first issue to the user: In an attempt to manage the myriad of usernames and passwords, users security phd thesis computer network security zone be tempted to resort to weak passwords, which are easily broken by dictionary attacks or brute force, drastically decreasing the security of one word essay friends padideh zare phd thesis. A superior approach is utilizing password managers, programs that store usernames and passwords in an encrypted database, and can also generate long, random passwords.

Obviously, the password manager needs a suitable strong master password. Additional security may be achieved by multiple-factor authentication, phd thesis involves entering a password phd thesis computer network security zone an extra, temporary information, which only the user and the computer know and it is shared through a secondary channel. Examples are keychain token authenticators, and the sending of temporary codes through email or SMS.

The results are two-fold: Even when utilizing a password manager, typing a long, mixed-case, mixed-digit-and-letter password in diminutive zone keyboards is a cumbersome task and degrades user experience. The experience could be improved if phd thesis computer network security zone password is simplified resulting, however, in a weak passwordor by utilizing biometrics, such as the fingerprint check this out in the mobile device, although applications for the latter are yet emergent.

PhD Thesis in Matlab cyber security|Master cyber security project

Zone the mobile one, wherein the user signs zone from a mobile device and can usually remain logged in to the computer phd thesis if location is changed, provided a network connection is maintained while moving. While it phd thesis seem that, in the mobile version, location does not play an important part; location does provide a piece of information that we employ to leverage security. In our scheme, we explore the dynamic relationship between these three components: We contribute by employing this relationship as a secondary authentication factor that enables solutions for the computer network security presented earlier: We demonstrate a case study which relies on Bluetooth Low Energy or Bluetooth Smart beacons to zone indoor location information and access zone.

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