Sökning: "Authentication"

Visar resultat 1 - 5 av 81 avhandlingar innehållade ordet Authentication.

  1. 1. Topics in Authentication Theory

    Författare :Christian Gehrmann; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polynomial evaluation; anonymous secret sharing; multiround authentication; group authentication; threshold cryptography; MAC; secret sharing; cryptology; Authentication; authentication codes; Systems engineering; computer technology; Data- och systemvetenskap;

    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

  3. 2. Authentication under Constraints

    Författare :Elena Pagnin; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Security.; Distance-Bounding; Privacy; Biometrics; Anonymity; Authentication; Digital Signatures;

    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

  4. 3. Contributions to Web Authentication for Untrusted Computers

    Författare :Anna Vapen; Nahid Shahmehri; Simone Fischer-Hübner; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Authentication; security levels; identity management; 2-clickAuth; information security; Computer science; Datalogi;

    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

  5. 4. Information-theoretic Privacy and Secrecy in Biometric Identification and Authentication

    Författare :Linghui Zhou; Tobias J. Oechtering; Mikael Skoglund; Hideki Yagi; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Information theory; identification; authentication; privacy; secrecy; Informationsteori; identifiering; autentisering; integritet; sekretess; Electrical Engineering; Elektro- och systemteknik;

    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

  7. 5. Be More and be Merry: Enhancing Data and User Authentication in Collaborative Settings

    Författare :Elena Pagnin; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Homomorphic Signatures; Server-Aided Verification; Distance-Bounding Authentication Protocols; Verifiable Com- putation; Biometric Authentication.;

    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