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User Authentication and Cryptographic Primitives

User Authentication and Cryptographic Primitives

User Authentication and Cryptographic Primitives. Brad Karp UCL Computer Science. CS GZ03 / M030 11 th November, 2008. Outline. Authenticating users Local users: hashed passwords Remote users: s/key Unexpected covert channel: the Tenex password-guessing attack Symmetric-key-cryptography

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640 views • 48 slides
User Authentication and Cryptographic Primitives

User Authentication and Cryptographic Primitives

User Authentication and Cryptographic Primitives. Brad Karp UCL Computer Science. CS GZ03 / 4030 19 th November, 2007. Outline. Authenticating users Local users: hashed passwords Remote users: s/key Unexpected covert channel: the Tenex password-guessing attack Symmetric-key-cryptography

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608 views • 47 slides
Secure Remote Authentication Using Biometrics

Secure Remote Authentication Using Biometrics

Secure Remote Authentication Using Biometrics. Jonathan Katz *. Portions of this work done with Xavier Boyen, Yevgeniy Dodis, Rafail Ostrovsky, Adam Smith. * Work supported by NSF Trusted Computing grant #0310751. Motivation.

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676 views • 46 slides
Lecture 6 User Authentication ( cont )

Lecture 6 User Authentication ( cont )

Lecture 6 User Authentication ( cont ). modified from slides of Lawrie Brown. Password File Access Control. can block offline guessing attacks by denying access to encrypted passwords. make available only to privileged users. vulnerabilities.

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267 views • 26 slides
DDBMS Security

DDBMS Security

DDBMS Security. - Bakul Gada. Overview. Introduction to Database Security Security Issues in centralized databases Security issues in Distributed Databases. Introduction. Data security Protect data against unauthorized access. Two aspects Data protection. Authorization Control.

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486 views • 16 slides

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