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The purpose of this paper is to present an improvement of the Needham-Schroder public key protocol. This new protocol will use partial quotients issue from the continued fraction expansion of some irrational numbers to secure the authentication between two principals. We introduce a new approach in the use of pseudo-random numbers, because besides using these numbers to provide uniqueness and timeliness guarantees, we use them to ensure that nobody can guess the identity of the sender. We also keep this new protocol secure against the Lowe attack, without taking the solution suggested by Lowe. This protocol remains fast although we compute some partial quotients during the authentication process.
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Chapter 6 Authenticating People Chapter 6 Overview The three authentication factors: what you know, you have, and you are Passwords, password bias, and search space calculations Cryptographic building blocks: random choice, one-way hash Authentication devices: personal tokens and biometrics Basic issues in authentication policy Elements of Authentication Authentication Factors Something you know Password or PIN Something you have Key or token Something you are Personal trait Traditional parallel terms: Something you know, are, have Multi-factor Authentication Using different factors in authentication NOT two or three instances of the same factor Two-factor authentication ATM authentication: ATM card + PIN Biometric laptop: Fingerprint + password NOT: Password + PIN Three-factor authentication Biometric access card: fingerprint + card + PIN NOT: fingerprint + PIN + password Authentication Threats Focus in this chapter Trick the authentication system or access assets through the system No “remote” attacks via Internet or LAN Threats must have physical access to system Range of threats Weak threat – authentication is effective Strong threat – authentication may work Extreme threat – authentication not effective Attacks on Authentication Password Authentication Each User ID is associated with a secret User presents the secret when logging in System checks the secret against the authentication database Access granted if the secret matches Risks Shoulder surfing at the keyboard Reading the password off of printer paper Sniffing the password in transit or in RAM Retrieving the authentication database Password Hashing One-Way Hash Functions A Cryptographic Building Block function We will see more building blocks later Input: An arbitrarily large amount of data, from a few bytes to terabytes – RAM or files or devices Output: A fixed-size result Impractical to reverse Minor change to input = big change to output Sniffing Passwords Goal: intercept the password before it is hashed Keystroke loggers In hardware: Devices that connect to a keyboard's USB cable In software: Procedures that eavesdrop on keyboard input buffers Password Guessing DOD Password Guideline (1985) required a minimum 1 in a million chance of successful guessing. This was designed to defeat interactive password guessing: A person or machine made numerous guesses Some guessing succeeds based on social and personal knowledge of the targeted victim Modern network-based guessing can try tens of thousands of alternatives very quickly. Off-line Password Cracking How Fast Is Off-line Cracking? It depends on the size of the search space i.e., how many legal – or likely – passwords? Legal passwords are limited to specific sets of characters, typically from the ASCII set Single-case letters only: Two letter passwords = 262 Three letter passwords = 263 … etc. Password with L letters = 26L Increasing the Search Space Two options Increase L – the length of pas ...
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The purpose of this paper is to present an improvement of the Needham-Schroder public key protocol. This new protocol will use partial quotients issue from the continued fraction expansion of some irrational numbers to secure the authentication between two principals. We introduce a new approach in the use of pseudo-random numbers, because besides using these numbers to provide uniqueness and timeliness guarantees, we use them to ensure that nobody can guess the identity of the sender. We also keep this new protocol secure against the Lowe attack, without taking the solution suggested by Lowe. This protocol remains fast although we compute some partial quotients during the authentication process.
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Strategies for Landing an Oracle DBA Job as a Fresher
Remote DBA Services
Presented by Mike Hicks
How to Troubleshoot Apps for the Modern Connected Worker
How to Troubleshoot Apps for the Modern Connected Worker
ThousandEyes
The CNIC Information System is a comprehensive database managed by the National Database and Registration Authority (NADRA) of Pakistan. It serves as the primary source of identification for Pakistani citizens and residents, containing vital information such as name, date of birth, address, and biometric data.
CNIC Information System with Pakdata Cf In Pakistan
CNIC Information System with Pakdata Cf In Pakistan
danishmna97
The microservices honeymoon is over. When starting a new project or revamping a legacy monolith, teams started looking for alternatives to microservices. The Modular Monolith, or 'Modulith', is an architecture that reaps the benefits of (vertical) functional decoupling without the high costs associated with separate deployments. This talk will delve into the advantages and challenges of this progressive architecture, beginning with exploring the concept of a 'module', its internal structure, public API, and inter-module communication patterns. Supported by spring-modulith, the talk provides practical guidance on addressing the main challenges of a Modultith Architecture: finding and guarding module boundaries, data decoupling, and integration module-testing. You should not miss this talk if you are a software architect or tech lead seeking practical, scalable solutions. About the author With two decades of experience, Victor is a Java Champion working as a trainer for top companies in Europe. Five thousands developers in 120 companies attended his workshops, so he gets to debate every week the challenges that various projects struggle with. In return, Victor summarizes key points from these workshops in conference talks and online meetups for the European Software Crafters, the world’s largest developer community around architecture, refactoring, and testing. Discover how Victor can help you on victorrentea.ro : company training catalog, consultancy and YouTube playlists.
Modular Monolith - a Practical Alternative to Microservices @ Devoxx UK 2024
Modular Monolith - a Practical Alternative to Microservices @ Devoxx UK 2024
Victor Rentea
ICT role in education and it's challenges. In which we learn about ICT, it's impact, benefits and challenges.
ICT role in 21st century education and its challenges
ICT role in 21st century education and its challenges
rafiqahmad00786416
ICT role in 21 century education. How to ICT help in education
presentation ICT roal in 21st century education
presentation ICT roal in 21st century education
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Repurposing LNG terminals for Hydrogen Ammonia: Feasibility and Cost Saving. A report by Poten & Partners as part of the Hydrogen Asia 2024 Summit in Singapore. Copyright Poten & Partners 2024.
Repurposing LNG terminals for Hydrogen Ammonia: Feasibility and Cost Saving
Repurposing LNG terminals for Hydrogen Ammonia: Feasibility and Cost Saving
Edi Saputra
MINDCTI Revenue Release Quarter 1 2024
MINDCTI Revenue Release Quarter One 2024
MINDCTI Revenue Release Quarter One 2024
MIND CTI
Effective data discovery is crucial for maintaining compliance and mitigating risks in today's rapidly evolving privacy landscape. However, traditional manual approaches often struggle to keep pace with the growing volume and complexity of data. Join us for an insightful webinar where industry leaders from TrustArc and Privya will share their expertise on leveraging AI-powered solutions to revolutionize data discovery. You'll learn how to: - Effortlessly maintain a comprehensive, up-to-date data inventory - Harness code scanning insights to gain complete visibility into data flows leveraging the advantages of code scanning over DB scanning - Simplify compliance by leveraging Privya's integration with TrustArc - Implement proven strategies to mitigate third-party risks Our panel of experts will discuss real-world case studies and share practical strategies for overcoming common data discovery challenges. They'll also explore the latest trends and innovations in AI-driven data management, and how these technologies can help organizations stay ahead of the curve in an ever-changing privacy landscape.
TrustArc Webinar - Unlock the Power of AI-Driven Data Discovery
TrustArc Webinar - Unlock the Power of AI-Driven Data Discovery
TrustArc
Scaling API-first – The story of a global engineering organization Ian Reasor, Senior Computer Scientist - Adobe Radu Cotescu, Senior Computer Scientist - Adobe Apidays New York 2024: The API Economy in the AI Era (April 30 & May 1, 2024) ------ Check out our conferences at https://www.apidays.global/ Do you want to sponsor or talk at one of our conferences? https://apidays.typeform.com/to/ILJeAaV8 Learn more on APIscene, the global media made by the community for the community: https://www.apiscene.io Explore the API ecosystem with the API Landscape: https://apilandscape.apiscene.io/
Apidays New York 2024 - Scaling API-first by Ian Reasor and Radu Cotescu, Adobe
Apidays New York 2024 - Scaling API-first by Ian Reasor and Radu Cotescu, Adobe
apidays
Uncertainty, Acting under uncertainty, Basic probability notation, Bayes’ Rule,
Artificial Intelligence Chap.5 : Uncertainty
Artificial Intelligence Chap.5 : Uncertainty
Khushali Kathiriya
The Good, the Bad and the Governed - Why is governance a dirty word? David O'Neill, Chief Operating Officer - APIContext Apidays New York 2024: The API Economy in the AI Era (April 30 & May 1, 2024) ------ Check out our conferences at https://www.apidays.global/ Do you want to sponsor or talk at one of our conferences? https://apidays.typeform.com/to/ILJeAaV8 Learn more on APIscene, the global media made by the community for the community: https://www.apiscene.io Explore the API ecosystem with the API Landscape: https://apilandscape.apiscene.io/
Apidays New York 2024 - The Good, the Bad and the Governed by David O'Neill, ...
Apidays New York 2024 - The Good, the Bad and the Governed by David O'Neill, ...
apidays
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AI+A11Y 11MAY2024 HYDERBAD GAAD 2024 - HelloA11Y (11 May 2024)
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Rising Above_ Dubai Floods and the Fortitude of Dubai International Airport.pdf
Rising Above_ Dubai Floods and the Fortitude of Dubai International Airport.pdf
Orbitshub
Accelerating FinTech Innovation: Unleashing API Economy and GenAI Vasa Krishnan, Chief Technology Officer - FinResults Apidays New York 2024: The API Economy in the AI Era (April 30 & May 1, 2024) ------ Check out our conferences at https://www.apidays.global/ Do you want to sponsor or talk at one of our conferences? https://apidays.typeform.com/to/ILJeAaV8 Learn more on APIscene, the global media made by the community for the community: https://www.apiscene.io Explore the API ecosystem with the API Landscape: https://apilandscape.apiscene.io/
Apidays New York 2024 - Accelerating FinTech Innovation by Vasa Krishnan, Fin...
Apidays New York 2024 - Accelerating FinTech Innovation by Vasa Krishnan, Fin...
apidays
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CNIC Information System with Pakdata Cf In Pakistan
Modular Monolith - a Practical Alternative to Microservices @ Devoxx UK 2024
Modular Monolith - a Practical Alternative to Microservices @ Devoxx UK 2024
ICT role in 21st century education and its challenges
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Repurposing LNG terminals for Hydrogen Ammonia: Feasibility and Cost Saving
Repurposing LNG terminals for Hydrogen Ammonia: Feasibility and Cost Saving
MINDCTI Revenue Release Quarter One 2024
MINDCTI Revenue Release Quarter One 2024
TrustArc Webinar - Unlock the Power of AI-Driven Data Discovery
TrustArc Webinar - Unlock the Power of AI-Driven Data Discovery
Apidays New York 2024 - Scaling API-first by Ian Reasor and Radu Cotescu, Adobe
Apidays New York 2024 - Scaling API-first by Ian Reasor and Radu Cotescu, Adobe
Artificial Intelligence Chap.5 : Uncertainty
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Apidays New York 2024 - The Good, the Bad and the Governed by David O'Neill, ...
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AI+A11Y 11MAY2024 HYDERBAD GAAD 2024 - HelloA11Y (11 May 2024)
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Rising Above_ Dubai Floods and the Fortitude of Dubai International Airport.pdf
Rising Above_ Dubai Floods and the Fortitude of Dubai International Airport.pdf
Apidays New York 2024 - Accelerating FinTech Innovation by Vasa Krishnan, Fin...
Apidays New York 2024 - Accelerating FinTech Innovation by Vasa Krishnan, Fin...
Understanding the FAA Part 107 License ..
Understanding the FAA Part 107 License ..
Authentication
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