'Signature schemes' diaporamas de présentation

Privacy-Preserving Authentication: A Tutorial

1.11k views • 97 slides

Chapter 7-2

Chapter 7-2. Signature Schemes. Outline. [1] Introduction [2] Security Requirements for Signature Schemes [3] The ElGamal Signature Scheme [4] Variants of the ElGamal Signature Scheme The Schnorr Signature Scheme The Digital Signature Algorithm The Elliptic Curve DSA

674 views • 37 slides

Seminar Presentation on Notions of Security

Seminar Presentation on Notions of Security. January 18, 2008 COSEC@B-IT, Bonn, Germany. SECURITY NOTIONS FOR SIGNATURE SCHEMES : THE GHR SECURITY PROOF. Presented By S. M. Masud Karim Supervised By Prof. Joachim von zur Gathen Ms Laila El Aimani. Outline of the Talk.

439 views • 30 slides

494 views • 30 slides

440 views • 28 slides

296 views • 28 slides

Security Arguments for Digital Signatures and Blind Signatures

Security Arguments for Digital Signatures and Blind Signatures. Journal of Cryptology, (2000) 13: 361-396 Authors: D. Pointcheval and J. Stern Presented by J. Liu. Outline. Introduction Definitions The random oracle model Digital signature schemes Preliminaries

269 views • 26 slides

CMSC 414 Computer and Network Security Lecture 7

CMSC 414 Computer and Network Security Lecture 7. Jonathan Katz. Malleability/chosen-ciphertext security. All the public-key encryption schemes we have seen so far are malleable

340 views • 21 slides

Foundations of Cryptography Lecture 8

329 views • 21 slides

On the (In)Security of RSA Signatures

308 views • 19 slides

A Reactively Secure Dolev-Yao-style Cryptographic Library

Michael Backes, Birgit Pfitzmann, Michael Waidner IBM Research, Zurich. A Reactively Secure Dolev-Yao-style Cryptographic Library. DIMACS, June 2004. Signature. Encryption. Hashfunction. Key establishment. The Big Picture. But can we justify . Idealized Crypto. given. ?.

314 views • 18 slides

Security Arguments for Digital Signatures and Blind Signatures

Security Arguments for Digital Signatures and Blind Signatures. Journal of Cryptology, (2000) 13: 361-396 Authors: D. Pointcheval and J. Stern Presented by J. Liu. Outline. Introduction Definitions The random oracle model Digital signature schemes Preliminaries

375 views • 15 slides

Course summary

247 views • 13 slides

Key Substitution Attacks on Some Provably Secure Signature Schemes

Key Substitution Attacks on Some Provably Secure Signature Schemes. Author: Chik-How Tan Source: IEICE Trans. Fundamentals, Vol.E87-A, No.1 Jan. 2004 Speaker: Su Sheng-Yao. Outline. Introduction Two Provably Secure Signature Scheme Fischlin Signature Scheme

135 views • 12 slides