Sökning: "Authentication"
Visar resultat 1 - 5 av 80 avhandlingar innehållade ordet Authentication.
1. Topics in Authentication Theory
Sammanfattning : Authentication theory deals with problems connected with the protection of information sent over insecure channels. This thesis concerns different problems in authentication theory. In particular, we consider unconditionally secure authentication, i.e. LÄS MER
2. Authentication under Constraints
Sammanfattning : Authentication has become a critical step to gain access to services such as on-line banking, e-commerce, transport systems and cars (contact-less keys). In several cases, however, the authentication process has to be performed under challenging conditions. LÄS MER
3. Contributions to Web Authentication for Untrusted Computers
Sammanfattning : Authentication methods offer varying levels of security. Methods with one-time credentials generated by dedicated hardware tokens can reach a high level of security, whereas password-based authentication methods have a low level of security since passwords can be eavesdropped and stolen by an attacker. LÄS MER
4. Information-theoretic Privacy and Secrecy in Biometric Identification and Authentication
Sammanfattning : Nowadays, biometrics are more and more deployed to reinforce traditional authentication or identification that uses keys, passwords, etc. Biometric identification and authentication have been studied from various information-theoretic perspectives, where privacy and secrecy are two important aspects. LÄS MER
5. Be More and be Merry: Enhancing Data and User Authentication in Collaborative Settings
Sammanfattning : Cryptography is the science and art of keeping information secret to un-intended parties. But, how can we determine who is an intended party and who is not? Authentication is the branch of cryptography that aims at confirming the source of data or at proving the identity of a person. This Ph.D. LÄS MER