Cryptography for Everyone
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This document discusses cryptography concepts including encryption, decryption, symmetric and asymmetric encryption algorithms, cryptographic hashes, and protocols. It defines cryptography as securing and controlling access to actual data. It explains how encryption works using a cipher text, plain text and encryption/decryption functions. Symmetric encryption uses the same key for encryption and decryption while asymmetric encryption uses a public key to encrypt and private key to decrypt. Common symmetric algorithms include AES and common asymmetric algorithms include RSA and Diffie-Hellman. Cryptographic hashes like SHA-1 produce a fixed-length digest from a message. Protocols specify the full set of steps for cryptographic activities while algorithms are the data transformations. Digital signatures encrypt data with a private key that can
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Cryptography is the science of using mathematics to encrypt and decrypt data.
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In this talk, I will take you for a spin around the performance racetrack. We’ll explore common pitfalls - those hidden potholes on your application that can cause unexpected slowdowns. Learn how to spot these performance bumps early, and more importantly, how to navigate around them to keep your application running at top speed.
We will focus in particular on tuning your engine at the application level, making the right adjustments to ensure that your system responds like a well-oiled, high-performance race car.
E-commerce Development Services- Hornet Dynamics
For any business hoping to succeed in the digital age, having a strong online presence is crucial. We offer Ecommerce Development Services that are customized according to your business requirements and client preferences, enabling you to create a dynamic, safe, and user-friendly online store.
What is Master Data Management by PiLog Group
PiLog Group's Master Data Record Manager (MDRM) is a sophisticated enterprise solution designed to ensure data accuracy, consistency, and governance across various business functions. MDRM integrates advanced data management technologies to cleanse, classify, and standardize master data, thereby enhancing data quality and operational efficiency.
Microservice Teams - How the cloud changes the way we work
A lot of technical challenges and complexity come with building a cloud-native and distributed architecture. The way we develop backend software has fundamentally changed in the last ten years. Managing a microservices architecture demands a lot of us to ensure observability and operational resiliency. But did you also change the way you run your development teams?
Sven will talk about Atlassian’s journey from a monolith to a multi-tenanted architecture and how it affected the way the engineering teams work. You will learn how we shifted to service ownership, moved to more autonomous teams (and its challenges), and established platform and enablement teams.
Graspan: A Big Data System for Big Code Analysis
We built a disk-based parallel graph system, Graspan, that uses a novel edge-pair centric computation model to compute dynamic transitive closures on very large program graphs.
We implement context-sensitive pointer/alias and dataflow analyses on Graspan. An evaluation of these analyses on large codebases such as Linux shows that their Graspan implementations scale to millions of lines of code and are much simpler than their original implementations.
These analyses were used to augment the existing checkers; these augmented checkers found 132 new NULL pointer bugs and 1308 unnecessary NULL tests in Linux 4.4.0-rc5, PostgreSQL 8.3.9, and Apache httpd 2.2.18.
- Accepted in ASPLOS ‘17, Xi’an, China.
- Featured in the tutorial, Systemized Program Analyses: A Big Data Perspective on Static Analysis Scalability, ASPLOS ‘17.
- Invited for presentation at SoCal PLS ‘16.
- Invited for poster presentation at PLDI SRC ‘16.
E-Invoicing Implementation: A Step-by-Step Guide for Saudi Arabian Companies
Explore the seamless transition to e-invoicing with this comprehensive guide tailored for Saudi Arabian businesses. Navigate the process effortlessly with step-by-step instructions designed to streamline implementation and enhance efficiency.
Atelier - Innover avec l’IA Générative et les graphes de connaissances
Atelier - Innover avec l’IA Générative et les graphes de connaissances
Allez au-delà du battage médiatique autour de l’IA et découvrez des techniques pratiques pour utiliser l’IA de manière responsable à travers les données de votre organisation. Explorez comment utiliser les graphes de connaissances pour augmenter la précision, la transparence et la capacité d’explication dans les systèmes d’IA générative. Vous partirez avec une expérience pratique combinant les relations entre les données et les LLM pour apporter du contexte spécifique à votre domaine et améliorer votre raisonnement.
Amenez votre ordinateur portable et nous vous guiderons sur la mise en place de votre propre pile d’IA générative, en vous fournissant des exemples pratiques et codés pour démarrer en quelques minutes.
Vitthal Shirke Java Microservices Resume.pdf
Software Engineering, Software Consulting, Tech Lead, Spring Boot, Spring Cloud, Spring Core, Spring JDBC, Spring Transaction, Spring MVC, OpenShift Cloud Platform, Kafka, REST, SOAP, LLD & HLD.
Automated software refactoring with OpenRewrite and Generative AI.pptx.pdf
https://2024.springio.net/sessions/automated-software-refactoring-with-openrewrite-and-generative-ai/
Empowering Growth with Best Software Development Company in Noida - Deuglo
Do you want Software for your Business? Visit Deuglo
Deuglo has top Software Developers in India. They are experts in software development and help design and create custom Software solutions.
Deuglo follows seven steps methods for delivering their services to their customers. They called it the Software development life cycle process (SDLC).
Requirement — Collecting the Requirements is the first Phase in the SSLC process.
Feasibility Study — after completing the requirement process they move to the design phase.
Design — in this phase, they start designing the software.
Coding — when designing is completed, the developers start coding for the software.
Testing — in this phase when the coding of the software is done the testing team will start testing.
Installation — after completion of testing, the application opens to the live server and launches!
Maintenance — after completing the software development, customers start using the software.
openEuler Case Study - The Journey to Supply Chain Security
openEuler Case Study - The Journey to Supply Chain Security
Measures in SQL (SIGMOD 2024, Santiago, Chile)
SQL has attained widespread adoption, but Business Intelligence tools still use their own higher level languages based upon a multidimensional paradigm. Composable calculations are what is missing from SQL, and we propose a new kind of column, called a measure, that attaches a calculation to a table. Like regular tables, tables with measures are composable and closed when used in queries.
SQL-with-measures has the power, conciseness and reusability of multidimensional languages but retains SQL semantics. Measure invocations can be expanded in place to simple, clear SQL.
To define the evaluation semantics for measures, we introduce context-sensitive expressions (a way to evaluate multidimensional expressions that is consistent with existing SQL semantics), a concept called evaluation context, and several operations for setting and modifying the evaluation context.
A talk at SIGMOD, June 9–15, 2024, Santiago, Chile
Authors: Julian Hyde (Google) and John Fremlin (Google)
https://doi.org/10.1145/3626246.3653374
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8 Best Automated Android App Testing Tool and Framework in 2024.pdf
Regarding mobile operating systems, two major players dominate our thoughts: Android and iPhone. With Android leading the market, software development companies are focused on delivering apps compatible with this OS. Ensuring an app's functionality across various Android devices, OS versions, and hardware specifications is critical, making Android app testing essential.
Oracle 23c New Features For DBAs and Developers.pptx
Most important New features of Oracle 23c for DBAs and Developers. You can get more idea from my youtube channel video from https://youtu.be/XvL5WtaC20A
Using Xen Hypervisor for Functional Safety
An update on making Xen hypervisor functionally safe and enhancing its usage in automotive and industrial use cases
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI App
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI App
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(3) AI Partner & Profit Review: https://sumonreview.com/ai-partner-profit-review
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LORRAINE ANDREI_LEQUIGAN_HOW TO USE ZOOM
Zoom is a comprehensive platform designed to connect individuals and teams efficiently. With its user-friendly interface and powerful features, Zoom has become a go-to solution for virtual communication and collaboration. It offers a range of tools, including virtual meetings, team chat, VoIP phone systems, online whiteboards, and AI companions, to streamline workflows and enhance productivity.
Why Choose Odoo 17 Community & How it differs from Odoo 17 Enterprise Edition
Why Choose Odoo 17 Community & How it differs from Odoo 17 Enterprise EditionEnvertis Software Solutions
Odoo ERP software
Odoo ERP software, a leading open-source software for Enterprise Resource Planning (ERP) and business management, has recently launched its latest version, Odoo 17 Community Edition. This update introduces a range of new features and enhancements designed to streamline business operations and support growth.
The Odoo Community serves as a cost-free edition within the Odoo suite of ERP systems. Tailored to accommodate the standard needs of business operations, it provides a robust platform suitable for organisations of different sizes and business sectors. Within the Odoo Community Edition, users can access a variety of essential features and services essential for managing day-to-day tasks efficiently.
This blog presents a detailed overview of the features available within the Odoo 17 Community edition, and the differences between Odoo 17 community and enterprise editions, aiming to equip you with the necessary information to make an informed decision about its suitability for your business.Recently uploaded (20)
Unveiling the Advantages of Agile Software Development.pdf
Unveiling the Advantages of Agile Software Development.pdf
Need for Speed: Removing speed bumps from your Symfony projects ⚡️
Need for Speed: Removing speed bumps from your Symfony projects ⚡️
Microservice Teams - How the cloud changes the way we work
Microservice Teams - How the cloud changes the way we work
E-Invoicing Implementation: A Step-by-Step Guide for Saudi Arabian Companies
E-Invoicing Implementation: A Step-by-Step Guide for Saudi Arabian Companies
Atelier - Innover avec l’IA Générative et les graphes de connaissances
Atelier - Innover avec l’IA Générative et les graphes de connaissances
Automated software refactoring with OpenRewrite and Generative AI.pptx.pdf
Automated software refactoring with OpenRewrite and Generative AI.pptx.pdf
Empowering Growth with Best Software Development Company in Noida - Deuglo
Empowering Growth with Best Software Development Company in Noida - Deuglo
openEuler Case Study - The Journey to Supply Chain Security
openEuler Case Study - The Journey to Supply Chain Security
8 Best Automated Android App Testing Tool and Framework in 2024.pdf
8 Best Automated Android App Testing Tool and Framework in 2024.pdf
Oracle 23c New Features For DBAs and Developers.pptx
Oracle 23c New Features For DBAs and Developers.pptx
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI App
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI App
Why Choose Odoo 17 Community & How it differs from Odoo 17 Enterprise Edition
Why Choose Odoo 17 Community & How it differs from Odoo 17 Enterprise Edition
Cryptography for Everyone
- 2. Agenda • What is Cryptography? • What is Encryption & Decryption? • Symmetric and Asymmetric Encryption • Cryptographic Hashes • Protocols
- 3. Cryptology Cryptography Securing, Control, and Identification of actual DATA Cryptanalysis Attempts to undermine, circumvent, break
- 4. Cryptography in Daily Life • Securing Communications • Securing files on disk • Control access • Identification of data • …
- 5. Encryption and Decryption • Plain Text = Message = M • Cipher Text = Encrypted Message = C • Cipher = Encryption/Decryption Function = E / D • Encryption • C = E(M) • Decryption • M = D(C) • M = D(E(M))
- 6. Encryption and Decryption KEY? • Not interested with standalone Encryption and Decryption Functions • Interested with Function indexed by a key. • C = E(M, k) • M = D(C, k) • M = D(E(M, k), k)
- 7. Stream Ciphers vs Block Ciphers • Stream Ciphers, • take plain text input one bit (or one byte) at a time, and output a corresponding cipher text bit (byte) • Best for immediate responses • Block Ciphers, • require an entire block of plain text input before they will perform any encryption • typically blocks are 64-bits or more
- 8. Symmetric Encryption M Encryption K Decryption C M Same M = D(E(M, k), k)
- 9. Symmetric Algorithms • DES (56 bits key), 1976 • 3DES (56, 112, 168 bits key), 1998 • AES (128, 192, 256 bits key), 2001
- 10. Asymmetric Encryption • In symmetric algorithms, KEY distribution is a problem !!! • In 1975, Whitfield Diffie and Martin Hellman proposed using related keys • Encryption and Decryption keys are different • Encryption is made with public key • Decryption is made with private key • Deriving keys from each other is infeasible.
- 11. Asymmetric Encryption M Encryption PublicKey C M C = E(M, PublicKey) M = D(C, PrivateKey) Decryption PrivateKey
- 12. Asymmetric Algorithms • Diffie-Hellman Key Exchange • RSA • Elliptic Curve
- 13. Cryptographic Hashes • One-way function • Irreversible • Takes any message, produce fixed-length digest data • Be careful for collisions • SHA-1 (160 bits), SHA-2, SHA-3, MD5 (128bits)
- 14. Cryptographic Hashes M Hash C C = H(M)
- 15. Key Points • KEY has to be strong, should not be predictable. • Symmetric ciphers are fast, asymmetric ciphers are generally slow. • Stream vs Block ciphers • Encryption of a large message takes longer time in asymmetric cryptography. • Key exchange in symmetric ciphers is a problem. • Use asymmetric cryptography for key exchange.
- 16. Protocols and Algorithms • Not Same • Protocol is a specification of the complete set of steps involved in carrying out a cryptographic activity. • Algorithm is transforming some digital data into some other digital data. • Algorithm may be is one of the steps of a protocol. • Algorithm can be strong, but protocol may be weak because of other steps
- 17. Digital Signature • A document can also be encrypted with private key and opened with the public key. • Encrypted data with private key can only be opened with public key.
- 18. Protocol for Digital Signature and Verification
- 19. Important Terms • Authentication: Prove that a message actually originates with its claimed originator. • Integrity: Prove that a message has not been altered in unauthorized ways. • Non-repudiation: Prevent an originator from denying credit (or blame) for creating or sending a message
- 20. GK Agent Authentication SQE Manager GWT Private Key https://ibiss.crse.com/gkb/login Enter username & password Authenticate PAYLOAD = userName + accessLevel + expiration Signature = RSA(SHA256(Base64(header) + Base64(PAYLOAD)), private-key) JWT= Base64(header).Base64(payload).Base64(Signature) Akamai WAF IP restriction REDIRECT TO www.sony.co.uk/permalink/support/search?token=JWT&appid=eu-clarity&locale=en_GB,ru_RU,tr_TR,xz_CN Validate Download & Cache Public Key REDIRECT sony.ru/electronics/support Add cookie gwtsession=AL:accessLevel Add cookie gwt-support-user=userName
- 21. Thanks ???