'Needham schroeder' presentation slideshows

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vca

634 views • 50 slides

COEN 350

COEN 350 . Kerberos. Kerberos. Provide authentication for a user that works on a workstation. Uses secret key technology Because public key technology still had patent projection. Implements authentication by Needham & Schroeder. On the market in versions 4 and 5. Kerberos.

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COEN 350

COEN 350 . Kerberos. Kerberos. Provide authentication for a uses that works on a workstation. Uses secret key technology for patenting reasons. Based on work by Needham & Schroeder. On the market in versions 4 and 5. Kerberos. Kerberos consists of Key Distribution Center (KDC)

639 views • 48 slides

Lecture 3: Authentication Protocols

Lecture 3: Authentication Protocols. Jeannette M. Wing 15-827 Security and Cryptography. Plan for Today. Identification and Entity Authentication (Chapter 10) Passwords, Biometrics Zero-Knowledge Proofs Key Establishment Through Key Transport (Chapter 12) Needham-Schroeder

606 views • 47 slides

Security Protocols

CS 155. May 26, 2005. Security Protocols. John Mitchell. Topics. Application layer protocols (review) Kerberos, SSL/TLS Network layer security IPsec Some details: key management techniques 802.11 Mobility Secure network infrastructure DNSsec

753 views • 46 slides

475 views • 46 slides

Security Protocols

CS 155. May 26, 2005. Security Protocols. John Mitchell. Topics. Application layer protocols (review) Kerberos, SSL/TLS Network layer security IPsec Some details: key management techniques 802.11 Mobility Secure network infrastructure DNSsec

563 views • 46 slides

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551 views • 36 slides

Actor Languages and Applications

Actor Languages and Applications. Gul Agha University of Illinois at Urbana-Champaign http://osl.cs.uiuc.edu. All recent failures occurred in bridges that passed regular visual inspection Visual inspection alone is not adequate. Monitor Infrastructure.

436 views • 33 slides

CSCE 813 Internet Security Cryptographic Protocol Analysis

CSCE 813 Internet Security Cryptographic Protocol Analysis. Reading Assignment. Reading: P.Y.A. Ryan, S.A. Schneider, M.H. Goldsmith, G. Lowe and A.W. Roscoe, The Modelling and Analysis

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CSCE 813 Internet Security Cryptographic Protocol Analysis

CSCE 813 Internet Security Cryptographic Protocol Analysis. Reading Assignment. Reading: P.Y.A. Ryan, S.A. Schneider, M.H. Goldsmith, G. Lowe and A.W. Roscoe, The Modelling and Analysis

296 views • 29 slides

Security Handshake Pitfalls

Security Handshake Pitfalls. Authentication Handshakes. Secure communication almost always includes an initial authentication handshake: Authenticate each other Establish sessions keys This process may involve many flaws. Login with shared secret. Approaches

1.75k views • 24 slides

Key Management/Distribution

Key Management/Distribution. Administrivia. Snafu on books Probably best to buy it elsewhere Paper assignment and first homework Next week (9/24). Cryptography in Use. Provides foundation for security services But can it bootstrap itself? Must establish shared key Straightforward plan

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Security Protocols Analysis

Security Protocols Analysis. Reading. This Class: Modelling and Analysis of Security Protocols: chapters 0.9-0.12 C. Meadows: Formal Methods for Cryptographic Protocol Analysis: Emerging Issues and Trends, http://citeseer.ist.psu.edu/meadows03formal.html Next class:

405 views • 23 slides

Authentication

CS 99j. Authentication. John C. Mitchell Stanford University. Computer security. Computer security is concerned with the detection and prevention of unauthorized actions by users of a computer system. Authentication. Verify identity Only allow authorized access

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Authentication

CS 99j. Authentication. John C. Mitchell Stanford University. Computer security. Computer security is concerned with the detection and prevention of unauthorized actions by users of a computer system. Authentication. Verify identity Only allow authorized access

275 views • 21 slides

Key Establishment Pitfalls

CS 378. Key Establishment Pitfalls. Vitaly Shmatikov. Secure Sessions. Secure sessions are one of the most important applications in network security Enable us to talk securely on an insecure network Goal: secure bi-directional communication channel between two parties

303 views • 11 slides

Lecture 10: Mediated Authentication

Lecture 10: Mediated Authentication. simple algorithm Needham-Schroeder simple expanded Otway-Rees nonce types. Establishing Session Key. problem (besides others): Bob will not know how to decrypt a message from Alice if message from KDC is late

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Needham-Schroeder Key Descriptor

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Needham-Schroeder Key Descriptor

190 views • 8 slides