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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
EEC 688/788 Secure and Dependable Computing

EEC 688/788 Secure and Dependable Computing

EEC 688/788 Secure and Dependable Computing. Lecture 4 Wenbing Zhao Department of Electrical and Computer Engineering Cleveland State University wenbing@ieee.org. Outline. Cipher modes. 11/13/2014. EEC688: Secure & Dependable Computing. Wenbing Zhao. Stream Ciphers.

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321 views • 21 slides
Modes of Operation

Modes of Operation

Modes of Operation. Instructor: Dania Alomar. Modes of Operation. A block cipher can be used in various methods for data encryption and decryption; these methods are called modes of operation. Five well-known block cipher modes of operation are: Electronic Codebook (ECB)

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161 views • 15 slides

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