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csce522-lect13 - CSCE 522 CSCE Identification and...

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CSCE 522 CSCE 522 Identification and Authentication Identification and Authentication
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CSCE 522 - Farkas 2 Reading Reading Reading for this lecture: Required: Pfleeger: Ch. 4.5 An Introduction to Computer Security: The NIST Handbook, http://csrc.nist.gov/publications/nistpubs/800-12/handbook.pdf : Chapter 16, Identification and Authentication, pages 180-194 Recommended: Smart Card Alliance, http://www.smartcardalliance.org/ Securing Digital Identities & Information, strong authentication http:// www.entrust.com/authentication/index.htm Certificate Authority GlobalSign Loses Critical Data to ComodoHacker, http:// techie-buzz.com/tech-news/globalsign-attack-certificate-authority-data-leak.html , Sept 8, 2011 Reading for next lecture: Pfleeger: Ch. 4.3 and 4.4
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Identification Identification Establishes the identity of an individual/system/ap- plication/etc. Proof of identity: password, driver’s license, Id card, etc. CSCE 522 - Farkas 3
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CSCE 522 - Farkas 4 Authentication Authentication Allows an entity (a user or a system) to prove its identity within a context, e.g., computer system Typically, the entity whose identity is verified reveals knowledge of some secret S to the verifier Strong authentication : the entity reveals knowledge of S to the verifier without revealing S to the verifier
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CSCE 522 - Farkas 5 Authentication Information Authentication Information Must be securely maintained by the system.
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CSCE 522 - Farkas 6 Elements of Authentication Elements of Authentication Person/group/code/system : to be authenticated Distinguishing characteristics : differentiates the entities to be authenticated Proprietor/system owner/administrator : responsible for the system Authentication mechanism : verify the distinguishing characteristics Access control mechanism : grant privileges upon successful authentication
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CSCE 522 - Farkas 7 Authentication Requirements Authentication Requirements Network must ensure Data exchange is established with addressed peer entity not with an entity that masquerades or replays previous messages Network must ensure data source is the one claimed Authentication generally follows identification Establish validity of claimed identity Provide protection against fraudulent transactions
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CSCE 522 - Farkas 8 User Authentication User Authentication What the user knows Password, personal information What the user possesses Physical key, ticket, passport, token, smart card What the user is (biometrics) Fingerprints, voiceprint, signature dynamics
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