El documento describe el algoritmo de cifrado DES (Data Encryption Standard). DES es un algoritmo simétrico de bloque que cifra bloques de 64 bits usando una clave de 56 bits. El algoritmo consta de 19 etapas que incluyen permutaciones inicial y final, una red de Feistel de 16 rondas que usa subclaves generadas a partir de la clave maestra, y funciones S que sustituyen bits.
Este documento discute el algoritmo DES (Data Encription Standard) establecido como norma en 1977. DES opera sobre bloques de 64 bits y usa una clave de 56 bits para cifrarlos. El documento explica cómo funciona el algoritmo DES, incluyendo la sección de transformación que consiste en 16 etapas que operan con subclaves generadas a partir de la clave principal. También discute la seguridad del algoritmo DES, la cual depende del secreto de la clave utilizada.
El documento describe las ventajas y desventajas del modo protegido en comparación con el modo real, así como los mecanismos de protección de memoria y recursos que ofrece el modo protegido, incluyendo tablas de descriptores, segmentación, paginación y el uso de anillos de protección. También explica cómo realizar la transición al modo protegido a través de la configuración de registros y tablas.
El Atari 2600 fue la primera consola de videojuegos de sobremesa exitosa. Utilizaba el microprocesador MOS 6507 de 8 bits a 1.19MHz. El chip TIA generaba la salida de video y sonido, mientras que el chip RIOT manejaba la entrada, incluyendo los controles de los jugadores. La consola incluía 128 bytes de RAM y podía acceder a hasta 8KB de memoria externa a través de cartuchos.
Estudio y Diseño de Moduladores y Demoduladores Integrados para Comunicacione...RFIC-IUMA
Este documento describe el estudio y diseño de moduladores y demoduladores integrados para comunicaciones inalámbricas usando la tecnología SiGe 0.35μm de AMS. El objetivo es estudiar modulaciones digitales comunes, diseñar un modulador y demodulador QPSK usando el software ADS, y verificar su funcionamiento conjunto en el sistema de comunicaciones. Se analizan conceptos como modulaciones digitales, mezcladores de frecuencia y filtros, y se diseñan e implementan los bloques del transmisor y receptor QPSK para su sim
El documento analiza los elementos que intervienen en los accidentes de tránsito y cómo estos varían según la edad. Identifica a las personas, las vías y los vehículos como los tres elementos clave. Explica que en la infancia los accidentes ocurren principalmente en vehículos conducidos por otros, entre los 10-14 años los accidentes de peatones son comunes, y a partir de los 15 años la mayoría de accidentes involucran a los adolescentes conduciendo.
2024 State of Marketing Report – by HubspotMarius Sescu
https://www.hubspot.com/state-of-marketing
· Scaling relationships and proving ROI
· Social media is the place for search, sales, and service
· Authentic influencer partnerships fuel brand growth
· The strongest connections happen via call, click, chat, and camera.
· Time saved with AI leads to more creative work
· Seeking: A single source of truth
· TLDR; Get on social, try AI, and align your systems.
· More human marketing, powered by robots
ChatGPT is a revolutionary addition to the world since its introduction in 2022. A big shift in the sector of information gathering and processing happened because of this chatbot. What is the story of ChatGPT? How is the bot responding to prompts and generating contents? Swipe through these slides prepared by Expeed Software, a web development company regarding the development and technical intricacies of ChatGPT!
Product Design Trends in 2024 | Teenage EngineeringsPixeldarts
The realm of product design is a constantly changing environment where technology and style intersect. Every year introduces fresh challenges and exciting trends that mold the future of this captivating art form. In this piece, we delve into the significant trends set to influence the look and functionality of product design in the year 2024.
Este documento discute el algoritmo DES (Data Encription Standard) establecido como norma en 1977. DES opera sobre bloques de 64 bits y usa una clave de 56 bits para cifrarlos. El documento explica cómo funciona el algoritmo DES, incluyendo la sección de transformación que consiste en 16 etapas que operan con subclaves generadas a partir de la clave principal. También discute la seguridad del algoritmo DES, la cual depende del secreto de la clave utilizada.
El documento describe las ventajas y desventajas del modo protegido en comparación con el modo real, así como los mecanismos de protección de memoria y recursos que ofrece el modo protegido, incluyendo tablas de descriptores, segmentación, paginación y el uso de anillos de protección. También explica cómo realizar la transición al modo protegido a través de la configuración de registros y tablas.
El Atari 2600 fue la primera consola de videojuegos de sobremesa exitosa. Utilizaba el microprocesador MOS 6507 de 8 bits a 1.19MHz. El chip TIA generaba la salida de video y sonido, mientras que el chip RIOT manejaba la entrada, incluyendo los controles de los jugadores. La consola incluía 128 bytes de RAM y podía acceder a hasta 8KB de memoria externa a través de cartuchos.
Estudio y Diseño de Moduladores y Demoduladores Integrados para Comunicacione...RFIC-IUMA
Este documento describe el estudio y diseño de moduladores y demoduladores integrados para comunicaciones inalámbricas usando la tecnología SiGe 0.35μm de AMS. El objetivo es estudiar modulaciones digitales comunes, diseñar un modulador y demodulador QPSK usando el software ADS, y verificar su funcionamiento conjunto en el sistema de comunicaciones. Se analizan conceptos como modulaciones digitales, mezcladores de frecuencia y filtros, y se diseñan e implementan los bloques del transmisor y receptor QPSK para su sim
El documento analiza los elementos que intervienen en los accidentes de tránsito y cómo estos varían según la edad. Identifica a las personas, las vías y los vehículos como los tres elementos clave. Explica que en la infancia los accidentes ocurren principalmente en vehículos conducidos por otros, entre los 10-14 años los accidentes de peatones son comunes, y a partir de los 15 años la mayoría de accidentes involucran a los adolescentes conduciendo.
2024 State of Marketing Report – by HubspotMarius Sescu
https://www.hubspot.com/state-of-marketing
· Scaling relationships and proving ROI
· Social media is the place for search, sales, and service
· Authentic influencer partnerships fuel brand growth
· The strongest connections happen via call, click, chat, and camera.
· Time saved with AI leads to more creative work
· Seeking: A single source of truth
· TLDR; Get on social, try AI, and align your systems.
· More human marketing, powered by robots
ChatGPT is a revolutionary addition to the world since its introduction in 2022. A big shift in the sector of information gathering and processing happened because of this chatbot. What is the story of ChatGPT? How is the bot responding to prompts and generating contents? Swipe through these slides prepared by Expeed Software, a web development company regarding the development and technical intricacies of ChatGPT!
Product Design Trends in 2024 | Teenage EngineeringsPixeldarts
The realm of product design is a constantly changing environment where technology and style intersect. Every year introduces fresh challenges and exciting trends that mold the future of this captivating art form. In this piece, we delve into the significant trends set to influence the look and functionality of product design in the year 2024.
How Race, Age and Gender Shape Attitudes Towards Mental HealthThinkNow
Mental health has been in the news quite a bit lately. Dozens of U.S. states are currently suing Meta for contributing to the youth mental health crisis by inserting addictive features into their products, while the U.S. Surgeon General is touring the nation to bring awareness to the growing epidemic of loneliness and isolation. The country has endured periods of low national morale, such as in the 1970s when high inflation and the energy crisis worsened public sentiment following the Vietnam War. The current mood, however, feels different. Gallup recently reported that national mental health is at an all-time low, with few bright spots to lift spirits.
To better understand how Americans are feeling and their attitudes towards mental health in general, ThinkNow conducted a nationally representative quantitative survey of 1,500 respondents and found some interesting differences among ethnic, age and gender groups.
Technology
For example, 52% agree that technology and social media have a negative impact on mental health, but when broken out by race, 61% of Whites felt technology had a negative effect, and only 48% of Hispanics thought it did.
While technology has helped us keep in touch with friends and family in faraway places, it appears to have degraded our ability to connect in person. Staying connected online is a double-edged sword since the same news feed that brings us pictures of the grandkids and fluffy kittens also feeds us news about the wars in Israel and Ukraine, the dysfunction in Washington, the latest mass shooting and the climate crisis.
Hispanics may have a built-in defense against the isolation technology breeds, owing to their large, multigenerational households, strong social support systems, and tendency to use social media to stay connected with relatives abroad.
Age and Gender
When asked how individuals rate their mental health, men rate it higher than women by 11 percentage points, and Baby Boomers rank it highest at 83%, saying it’s good or excellent vs. 57% of Gen Z saying the same.
Gen Z spends the most amount of time on social media, so the notion that social media negatively affects mental health appears to be correlated. Unfortunately, Gen Z is also the generation that’s least comfortable discussing mental health concerns with healthcare professionals. Only 40% of them state they’re comfortable discussing their issues with a professional compared to 60% of Millennials and 65% of Boomers.
Race Affects Attitudes
As seen in previous research conducted by ThinkNow, Asian Americans lag other groups when it comes to awareness of mental health issues. Twenty-four percent of Asian Americans believe that having a mental health issue is a sign of weakness compared to the 16% average for all groups. Asians are also considerably less likely to be aware of mental health services in their communities (42% vs. 55%) and most likely to seek out information on social media (51% vs. 35%).
AI Trends in Creative Operations 2024 by Artwork Flow.pdfmarketingartwork
Creative operations teams expect increased AI use in 2024. Currently, over half of tasks are not AI-enabled, but this is expected to decrease in the coming year. ChatGPT is the most popular AI tool currently. Business leaders are more actively exploring AI benefits than individual contributors. Most respondents do not believe AI will impact workforce size in 2024. However, some inhibitions still exist around AI accuracy and lack of understanding. Creatives primarily want to use AI to save time on mundane tasks and boost productivity.
Organizational culture includes values, norms, systems, symbols, language, assumptions, beliefs, and habits that influence employee behaviors and how people interpret those behaviors. It is important because culture can help or hinder a company's success. Some key aspects of Netflix's culture that help it achieve results include hiring smartly so every position has stars, focusing on attitude over just aptitude, and having a strict policy against peacocks, whiners, and jerks.
PEPSICO Presentation to CAGNY Conference Feb 2024Neil Kimberley
PepsiCo provided a safe harbor statement noting that any forward-looking statements are based on currently available information and are subject to risks and uncertainties. It also provided information on non-GAAP measures and directing readers to its website for disclosure and reconciliation. The document then discussed PepsiCo's business overview, including that it is a global beverage and convenient food company with iconic brands, $91 billion in net revenue in 2023, and nearly $14 billion in core operating profit. It operates through a divisional structure with a focus on local consumers.
Content Methodology: A Best Practices Report (Webinar)contently
This document provides an overview of content methodology best practices. It defines content methodology as establishing objectives, KPIs, and a culture of continuous learning and iteration. An effective methodology focuses on connecting with audiences, creating optimal content, and optimizing processes. It also discusses why a methodology is needed due to the competitive landscape, proliferation of channels, and opportunities for improvement. Components of an effective methodology include defining objectives and KPIs, audience analysis, identifying opportunities, and evaluating resources. The document concludes with recommendations around creating a content plan, testing and optimizing content over 90 days.
How to Prepare For a Successful Job Search for 2024Albert Qian
The document provides guidance on preparing a job search for 2024. It discusses the state of the job market, focusing on growth in AI and healthcare but also continued layoffs. It recommends figuring out what you want to do by researching interests and skills, then conducting informational interviews. The job search should involve building a personal brand on LinkedIn, actively applying to jobs, tailoring resumes and interviews, maintaining job hunting as a habit, and continuing self-improvement. Once hired, the document advises setting new goals and keeping skills and networking active in case of future opportunities.
A report by thenetworkone and Kurio.
The contributing experts and agencies are (in an alphabetical order): Sylwia Rytel, Social Media Supervisor, 180heartbeats + JUNG v MATT (PL), Sharlene Jenner, Vice President - Director of Engagement Strategy, Abelson Taylor (USA), Alex Casanovas, Digital Director, Atrevia (ES), Dora Beilin, Senior Social Strategist, Barrett Hoffher (USA), Min Seo, Campaign Director, Brand New Agency (KR), Deshé M. Gully, Associate Strategist, Day One Agency (USA), Francesca Trevisan, Strategist, Different (IT), Trevor Crossman, CX and Digital Transformation Director; Olivia Hussey, Strategic Planner; Simi Srinarula, Social Media Manager, The Hallway (AUS), James Hebbert, Managing Director, Hylink (CN / UK), Mundy Álvarez, Planning Director; Pedro Rojas, Social Media Manager; Pancho González, CCO, Inbrax (CH), Oana Oprea, Head of Digital Planning, Jam Session Agency (RO), Amy Bottrill, Social Account Director, Launch (UK), Gaby Arriaga, Founder, Leonardo1452 (MX), Shantesh S Row, Creative Director, Liwa (UAE), Rajesh Mehta, Chief Strategy Officer; Dhruv Gaur, Digital Planning Lead; Leonie Mergulhao, Account Supervisor - Social Media & PR, Medulla (IN), Aurelija Plioplytė, Head of Digital & Social, Not Perfect (LI), Daiana Khaidargaliyeva, Account Manager, Osaka Labs (UK / USA), Stefanie Söhnchen, Vice President Digital, PIABO Communications (DE), Elisabeth Winiartati, Managing Consultant, Head of Global Integrated Communications; Lydia Aprina, Account Manager, Integrated Marketing and Communications; Nita Prabowo, Account Manager, Integrated Marketing and Communications; Okhi, Web Developer, PNTR Group (ID), Kei Obusan, Insights Director; Daffi Ranandi, Insights Manager, Radarr (SG), Gautam Reghunath, Co-founder & CEO, Talented (IN), Donagh Humphreys, Head of Social and Digital Innovation, THINKHOUSE (IRE), Sarah Yim, Strategy Director, Zulu Alpha Kilo (CA).
Trends In Paid Search: Navigating The Digital Landscape In 2024Search Engine Journal
The search marketing landscape is evolving rapidly with new technologies, and professionals, like you, rely on innovative paid search strategies to meet changing demands.
It’s important that you’re ready to implement new strategies in 2024.
Check this out and learn the top trends in paid search advertising that are expected to gain traction, so you can drive higher ROI more efficiently in 2024.
You’ll learn:
- The latest trends in AI and automation, and what this means for an evolving paid search ecosystem.
- New developments in privacy and data regulation.
- Emerging ad formats that are expected to make an impact next year.
Watch Sreekant Lanka from iQuanti and Irina Klein from OneMain Financial as they dive into the future of paid search and explore the trends, strategies, and technologies that will shape the search marketing landscape.
If you’re looking to assess your paid search strategy and design an industry-aligned plan for 2024, then this webinar is for you.
5 Public speaking tips from TED - Visualized summarySpeakerHub
From their humble beginnings in 1984, TED has grown into the world’s most powerful amplifier for speakers and thought-leaders to share their ideas. They have over 2,400 filmed talks (not including the 30,000+ TEDx videos) freely available online, and have hosted over 17,500 events around the world.
With over one billion views in a year, it’s no wonder that so many speakers are looking to TED for ideas on how to share their message more effectively.
The article “5 Public-Speaking Tips TED Gives Its Speakers”, by Carmine Gallo for Forbes, gives speakers five practical ways to connect with their audience, and effectively share their ideas on stage.
Whether you are gearing up to get on a TED stage yourself, or just want to master the skills that so many of their speakers possess, these tips and quotes from Chris Anderson, the TED Talks Curator, will encourage you to make the most impactful impression on your audience.
See the full article and more summaries like this on SpeakerHub here: https://speakerhub.com/blog/5-presentation-tips-ted-gives-its-speakers
See the original article on Forbes here:
http://www.forbes.com/forbes/welcome/?toURL=http://www.forbes.com/sites/carminegallo/2016/05/06/5-public-speaking-tips-ted-gives-its-speakers/&refURL=&referrer=#5c07a8221d9b
ChatGPT and the Future of Work - Clark Boyd Clark Boyd
Everyone is in agreement that ChatGPT (and other generative AI tools) will shape the future of work. Yet there is little consensus on exactly how, when, and to what extent this technology will change our world.
Businesses that extract maximum value from ChatGPT will use it as a collaborative tool for everything from brainstorming to technical maintenance.
For individuals, now is the time to pinpoint the skills the future professional will need to thrive in the AI age.
Check out this presentation to understand what ChatGPT is, how it will shape the future of work, and how you can prepare to take advantage.
The document provides career advice for getting into the tech field, including:
- Doing projects and internships in college to build a portfolio.
- Learning about different roles and technologies through industry research.
- Contributing to open source projects to build experience and network.
- Developing a personal brand through a website and social media presence.
- Networking through events, communities, and finding a mentor.
- Practicing interviews through mock interviews and whiteboarding coding questions.
Google's Just Not That Into You: Understanding Core Updates & Search IntentLily Ray
1. Core updates from Google periodically change how its algorithms assess and rank websites and pages. This can impact rankings through shifts in user intent, site quality issues being caught up to, world events influencing queries, and overhauls to search like the E-A-T framework.
2. There are many possible user intents beyond just transactional, navigational and informational. Identifying intent shifts is important during core updates. Sites may need to optimize for new intents through different content types and sections.
3. Responding effectively to core updates requires analyzing "before and after" data to understand changes, identifying new intents or page types, and ensuring content matches appropriate intents across video, images, knowledge graphs and more.
A brief introduction to DataScience with explaining of the concepts, algorithms, machine learning, supervised and unsupervised learning, clustering, statistics, data preprocessing, real-world applications etc.
It's part of a Data Science Corner Campaign where I will be discussing the fundamentals of DataScience, AIML, Statistics etc.
Time Management & Productivity - Best PracticesVit Horky
Here's my presentation on by proven best practices how to manage your work time effectively and how to improve your productivity. It includes practical tips and how to use tools such as Slack, Google Apps, Hubspot, Google Calendar, Gmail and others.
The six step guide to practical project managementMindGenius
The six step guide to practical project management
If you think managing projects is too difficult, think again.
We’ve stripped back project management processes to the
basics – to make it quicker and easier, without sacrificing
the vital ingredients for success.
“If you’re looking for some real-world guidance, then The Six Step Guide to Practical Project Management will help.”
Dr Andrew Makar, Tactical Project Management
Unlocking the Power of ChatGPT and AI in Testing - A Real-World Look, present...Applitools
During this webinar, Anand Bagmar demonstrates how AI tools such as ChatGPT can be applied to various stages of the software development life cycle (SDLC) using an eCommerce application case study. Find the on-demand recording and more info at https://applitools.info/b59
Key takeaways:
• Learn how to use ChatGPT to add AI power to your testing and test automation
• Understand the limitations of the technology and where human expertise is crucial
• Gain insight into different AI-based tools
• Adopt AI-based tools to stay relevant and optimize work for developers and testers
* ChatGPT and OpenAI belong to OpenAI, L.L.C.
The document discusses various AI tools from OpenAI like GPT-3 and DALL-E 2, as well as ChatGPT. It explores how search engines are using AI and things to consider around AI-generated content. Potential SEO uses of ChatGPT are also presented, such as generating content at scale, conducting topic research, and automating basic coding tasks. The document encourages further reading on using ChatGPT for SEO purposes.
How Race, Age and Gender Shape Attitudes Towards Mental HealthThinkNow
Mental health has been in the news quite a bit lately. Dozens of U.S. states are currently suing Meta for contributing to the youth mental health crisis by inserting addictive features into their products, while the U.S. Surgeon General is touring the nation to bring awareness to the growing epidemic of loneliness and isolation. The country has endured periods of low national morale, such as in the 1970s when high inflation and the energy crisis worsened public sentiment following the Vietnam War. The current mood, however, feels different. Gallup recently reported that national mental health is at an all-time low, with few bright spots to lift spirits.
To better understand how Americans are feeling and their attitudes towards mental health in general, ThinkNow conducted a nationally representative quantitative survey of 1,500 respondents and found some interesting differences among ethnic, age and gender groups.
Technology
For example, 52% agree that technology and social media have a negative impact on mental health, but when broken out by race, 61% of Whites felt technology had a negative effect, and only 48% of Hispanics thought it did.
While technology has helped us keep in touch with friends and family in faraway places, it appears to have degraded our ability to connect in person. Staying connected online is a double-edged sword since the same news feed that brings us pictures of the grandkids and fluffy kittens also feeds us news about the wars in Israel and Ukraine, the dysfunction in Washington, the latest mass shooting and the climate crisis.
Hispanics may have a built-in defense against the isolation technology breeds, owing to their large, multigenerational households, strong social support systems, and tendency to use social media to stay connected with relatives abroad.
Age and Gender
When asked how individuals rate their mental health, men rate it higher than women by 11 percentage points, and Baby Boomers rank it highest at 83%, saying it’s good or excellent vs. 57% of Gen Z saying the same.
Gen Z spends the most amount of time on social media, so the notion that social media negatively affects mental health appears to be correlated. Unfortunately, Gen Z is also the generation that’s least comfortable discussing mental health concerns with healthcare professionals. Only 40% of them state they’re comfortable discussing their issues with a professional compared to 60% of Millennials and 65% of Boomers.
Race Affects Attitudes
As seen in previous research conducted by ThinkNow, Asian Americans lag other groups when it comes to awareness of mental health issues. Twenty-four percent of Asian Americans believe that having a mental health issue is a sign of weakness compared to the 16% average for all groups. Asians are also considerably less likely to be aware of mental health services in their communities (42% vs. 55%) and most likely to seek out information on social media (51% vs. 35%).
AI Trends in Creative Operations 2024 by Artwork Flow.pdfmarketingartwork
Creative operations teams expect increased AI use in 2024. Currently, over half of tasks are not AI-enabled, but this is expected to decrease in the coming year. ChatGPT is the most popular AI tool currently. Business leaders are more actively exploring AI benefits than individual contributors. Most respondents do not believe AI will impact workforce size in 2024. However, some inhibitions still exist around AI accuracy and lack of understanding. Creatives primarily want to use AI to save time on mundane tasks and boost productivity.
Organizational culture includes values, norms, systems, symbols, language, assumptions, beliefs, and habits that influence employee behaviors and how people interpret those behaviors. It is important because culture can help or hinder a company's success. Some key aspects of Netflix's culture that help it achieve results include hiring smartly so every position has stars, focusing on attitude over just aptitude, and having a strict policy against peacocks, whiners, and jerks.
PEPSICO Presentation to CAGNY Conference Feb 2024Neil Kimberley
PepsiCo provided a safe harbor statement noting that any forward-looking statements are based on currently available information and are subject to risks and uncertainties. It also provided information on non-GAAP measures and directing readers to its website for disclosure and reconciliation. The document then discussed PepsiCo's business overview, including that it is a global beverage and convenient food company with iconic brands, $91 billion in net revenue in 2023, and nearly $14 billion in core operating profit. It operates through a divisional structure with a focus on local consumers.
Content Methodology: A Best Practices Report (Webinar)contently
This document provides an overview of content methodology best practices. It defines content methodology as establishing objectives, KPIs, and a culture of continuous learning and iteration. An effective methodology focuses on connecting with audiences, creating optimal content, and optimizing processes. It also discusses why a methodology is needed due to the competitive landscape, proliferation of channels, and opportunities for improvement. Components of an effective methodology include defining objectives and KPIs, audience analysis, identifying opportunities, and evaluating resources. The document concludes with recommendations around creating a content plan, testing and optimizing content over 90 days.
How to Prepare For a Successful Job Search for 2024Albert Qian
The document provides guidance on preparing a job search for 2024. It discusses the state of the job market, focusing on growth in AI and healthcare but also continued layoffs. It recommends figuring out what you want to do by researching interests and skills, then conducting informational interviews. The job search should involve building a personal brand on LinkedIn, actively applying to jobs, tailoring resumes and interviews, maintaining job hunting as a habit, and continuing self-improvement. Once hired, the document advises setting new goals and keeping skills and networking active in case of future opportunities.
A report by thenetworkone and Kurio.
The contributing experts and agencies are (in an alphabetical order): Sylwia Rytel, Social Media Supervisor, 180heartbeats + JUNG v MATT (PL), Sharlene Jenner, Vice President - Director of Engagement Strategy, Abelson Taylor (USA), Alex Casanovas, Digital Director, Atrevia (ES), Dora Beilin, Senior Social Strategist, Barrett Hoffher (USA), Min Seo, Campaign Director, Brand New Agency (KR), Deshé M. Gully, Associate Strategist, Day One Agency (USA), Francesca Trevisan, Strategist, Different (IT), Trevor Crossman, CX and Digital Transformation Director; Olivia Hussey, Strategic Planner; Simi Srinarula, Social Media Manager, The Hallway (AUS), James Hebbert, Managing Director, Hylink (CN / UK), Mundy Álvarez, Planning Director; Pedro Rojas, Social Media Manager; Pancho González, CCO, Inbrax (CH), Oana Oprea, Head of Digital Planning, Jam Session Agency (RO), Amy Bottrill, Social Account Director, Launch (UK), Gaby Arriaga, Founder, Leonardo1452 (MX), Shantesh S Row, Creative Director, Liwa (UAE), Rajesh Mehta, Chief Strategy Officer; Dhruv Gaur, Digital Planning Lead; Leonie Mergulhao, Account Supervisor - Social Media & PR, Medulla (IN), Aurelija Plioplytė, Head of Digital & Social, Not Perfect (LI), Daiana Khaidargaliyeva, Account Manager, Osaka Labs (UK / USA), Stefanie Söhnchen, Vice President Digital, PIABO Communications (DE), Elisabeth Winiartati, Managing Consultant, Head of Global Integrated Communications; Lydia Aprina, Account Manager, Integrated Marketing and Communications; Nita Prabowo, Account Manager, Integrated Marketing and Communications; Okhi, Web Developer, PNTR Group (ID), Kei Obusan, Insights Director; Daffi Ranandi, Insights Manager, Radarr (SG), Gautam Reghunath, Co-founder & CEO, Talented (IN), Donagh Humphreys, Head of Social and Digital Innovation, THINKHOUSE (IRE), Sarah Yim, Strategy Director, Zulu Alpha Kilo (CA).
Trends In Paid Search: Navigating The Digital Landscape In 2024Search Engine Journal
The search marketing landscape is evolving rapidly with new technologies, and professionals, like you, rely on innovative paid search strategies to meet changing demands.
It’s important that you’re ready to implement new strategies in 2024.
Check this out and learn the top trends in paid search advertising that are expected to gain traction, so you can drive higher ROI more efficiently in 2024.
You’ll learn:
- The latest trends in AI and automation, and what this means for an evolving paid search ecosystem.
- New developments in privacy and data regulation.
- Emerging ad formats that are expected to make an impact next year.
Watch Sreekant Lanka from iQuanti and Irina Klein from OneMain Financial as they dive into the future of paid search and explore the trends, strategies, and technologies that will shape the search marketing landscape.
If you’re looking to assess your paid search strategy and design an industry-aligned plan for 2024, then this webinar is for you.
5 Public speaking tips from TED - Visualized summarySpeakerHub
From their humble beginnings in 1984, TED has grown into the world’s most powerful amplifier for speakers and thought-leaders to share their ideas. They have over 2,400 filmed talks (not including the 30,000+ TEDx videos) freely available online, and have hosted over 17,500 events around the world.
With over one billion views in a year, it’s no wonder that so many speakers are looking to TED for ideas on how to share their message more effectively.
The article “5 Public-Speaking Tips TED Gives Its Speakers”, by Carmine Gallo for Forbes, gives speakers five practical ways to connect with their audience, and effectively share their ideas on stage.
Whether you are gearing up to get on a TED stage yourself, or just want to master the skills that so many of their speakers possess, these tips and quotes from Chris Anderson, the TED Talks Curator, will encourage you to make the most impactful impression on your audience.
See the full article and more summaries like this on SpeakerHub here: https://speakerhub.com/blog/5-presentation-tips-ted-gives-its-speakers
See the original article on Forbes here:
http://www.forbes.com/forbes/welcome/?toURL=http://www.forbes.com/sites/carminegallo/2016/05/06/5-public-speaking-tips-ted-gives-its-speakers/&refURL=&referrer=#5c07a8221d9b
ChatGPT and the Future of Work - Clark Boyd Clark Boyd
Everyone is in agreement that ChatGPT (and other generative AI tools) will shape the future of work. Yet there is little consensus on exactly how, when, and to what extent this technology will change our world.
Businesses that extract maximum value from ChatGPT will use it as a collaborative tool for everything from brainstorming to technical maintenance.
For individuals, now is the time to pinpoint the skills the future professional will need to thrive in the AI age.
Check out this presentation to understand what ChatGPT is, how it will shape the future of work, and how you can prepare to take advantage.
The document provides career advice for getting into the tech field, including:
- Doing projects and internships in college to build a portfolio.
- Learning about different roles and technologies through industry research.
- Contributing to open source projects to build experience and network.
- Developing a personal brand through a website and social media presence.
- Networking through events, communities, and finding a mentor.
- Practicing interviews through mock interviews and whiteboarding coding questions.
Google's Just Not That Into You: Understanding Core Updates & Search IntentLily Ray
1. Core updates from Google periodically change how its algorithms assess and rank websites and pages. This can impact rankings through shifts in user intent, site quality issues being caught up to, world events influencing queries, and overhauls to search like the E-A-T framework.
2. There are many possible user intents beyond just transactional, navigational and informational. Identifying intent shifts is important during core updates. Sites may need to optimize for new intents through different content types and sections.
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Unlocking the Power of ChatGPT and AI in Testing - A Real-World Look, present...Applitools
During this webinar, Anand Bagmar demonstrates how AI tools such as ChatGPT can be applied to various stages of the software development life cycle (SDLC) using an eCommerce application case study. Find the on-demand recording and more info at https://applitools.info/b59
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* ChatGPT and OpenAI belong to OpenAI, L.L.C.
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2. Descripción del algoritmo de DES
DES
Introducción
DES (Data Encryption Standard, estándar de cifrado de datos) es un
algoritmo desarrollado originalmente por IBM a requerimiento del NBS
(National Bureau of Standards, Oficina Nacional de Estandarización, en la
actualidad denominado NIST, National Institute of Standards and
Technology, Instituto Nacional de Estandarización y Tecnología) de
EE.UU. y posteriormente modificado y adoptado por el gobierno de EE.UU.
en 1977 como estándar de cifrado de todas las informaciones sensibles no
clasificadas. Posteriormente, en 1980, el NIST estandarizó los diferentes
modos de operación del algoritmo. Es el más estudiado y utilizado de los
algoritmos de clave simétrica.
El nombre original del algoritmo, tal como lo denominó IBM, era
Lucifer. Trabajaba sobre bloques de 128 bits, teniendo la clave igual
longitud. Se basaba en operaciones lógicas booleanas y podía ser
implementado fácilmente, tanto en software como en hardware.
Tras las modificaciones introducidas por el NBS, consistentes
básicamente en la reducción de la longitud de clave y de los bloques, DES
cifra bloques de 64 bits, mediante permutación y sustitución y usando una
clave de 64 bits, de los que 8 son de paridad (esto es, en realidad usa 56
bits), produciendo así 64 bits cifrados.
TEXTO PLANO CLAVE de 64 bits
Bloque de 64 bits (56 bits reales)
Permutación Inicial Permutación 1
(Initial Permutation, IP) (Permuted Choice 1, PC-1)
L0, R0 C0, D 0
Permutación 2
Ronda 1 Rotación a izquierda
(Permuted Choice 2, PC-2)
L1, R1 K1 C1, D1
K1
Permutación 2
Ronda 2 Rotación a izquierda
(Permuted Choice 2, PC-2)
L2, R2 K2 C2, D 2
K2
Permutación 2
Ronda 16 Rotación a izquierda
(Permuted Choice 2, PC-2)
L16, R16 K16 C16, D 16
K16
Intercambio 32 bits
R16, L16
Permutación inicial inversa
(Final Permutation, IP-1)
TEXTO CIFRADO
Bloque de 64 bits
Figura 1: Esquema general del algoritmo DES
Jorge Sánchez Arriazu. Diciembre de 1999 2/10
3. Descripción del algoritmo de DES
DES tiene 19 etapas diferentes.
La primera etapa es una transposición, una permutación inicial (IP) del
texto plano de 64 bits, independientemente de la clave. La última etapa es
otra transposición (IP-1), exactamente la inversa de la primera. La
penúltima etapa intercambia los 32 bits de la izquierda y los 32 de la
derecha. Las 16 etapas restantes son una Red de Feistel de 16 rondas.
En cada una de las 16 iteraciones se emplea un valor, Ki, obtenido a
partir de la clave de 56 bits y distinto en cada iteración
CLAVE 64 bits
Permutación 1
(Permuted Choice 1, PC-1)
(54 bits)
C0 D0
(28 bits) (28 bits)
Rotación a la izquierda Rotación a la izquierda
C1 D1
(28 bits) (28 bits)
Permutación 2
(Permuted Choice 2, PC-2)
Rotación a la izquierda Rotación a la izquierda
K1
(48 bits)
Cn Dn
(28 bits) (28 bits)
Permutación 2
(Permuted Choice 2, PC-2)
Rotación a la izquierda Rotación a la izquierda
Kn
(48 bits)
C16 D16
(28 bits) (28 bits)
Permutación 2
(Permuted Choice 2, PC-2)
Rotación a la izquierda Rotación a la izquierda
K16
(48 bits)
Figura 2: Cálculo de las subclaves, Ki
Se realiza una permutación inicial (PC-1) sobre la clave, y luego la clave
obtenida se divide en dos mitades de 28 bits, cada una de las cuales se rota a
izquierda un número de bits determinado que no siempre es el mismo. Ki se
Jorge Sánchez Arriazu. Diciembre de 1999 3/10
4. Descripción del algoritmo de DES
deriva de la elección permutada (PC-2) de 48 de los 56 bits de estas dos
mitades rotadas.
La función f de la red de Feistel se compone de una permutación de
expansión (E), que convierte el bloque correspondiente de 32 bits en uno de
48. Después realiza una or-exclusiva con el valor Ki, también de 48 bits,
aplica ocho S-Cajas de 6*4 bits, y efectúa una nueva permutación (P).
Li-1 Ri-1
32 bits 32 bits
Expansión
(Permutation E)
48 bits
Ki
Xor
48 bits
Sustitución
(S-Cajas)
32 bits
Permutación
(Permutation P)
32 bits
Xor
Li Ri
32 bits 32 bits
Figura 3: Ronda del algoritmo DES
Para descifrar basta con usar el mismo algoritmo empleando las Ki en
orden inverso
Está descrito oficialmente en FIPS PUB 46.
Jorge Sánchez Arriazu. Diciembre de 1999 4/10
5. Descripción del algoritmo de DES
Descripción paso a paso del algoritmo DES
Esta parte del documento es una traducción de un artículo que se puede
encontrar en la página de internet http://www.aci.net/kalliste/des.htm y
cuyo autor es Matthew Fischer (mfischer@heinous.isca.uiowa.edu).
A continuación se describen los pasos necesarios para implementar este
algoritmo.
(i) Encriptación:
1.- Procesar la clave.
1.1.- Solicitar una clave de 64 bits al usuario.
La clave se puede introducir directamente o puede ser el resultado
de alguna operación anterior, ya que no hay ninguna especificación
al respecto.
De cada uno de los ocho bytes se elimina el octavo bit (el menos
significativo)
1.2.- Calcular las subclaves.
1.2.1.- Realizar la siguiente permutación en la clave de 64 bits
reduciéndose la misma a 56 bits (El bit 1, el más
significativo, de la clave transformada es el bit 57 de la
Permuted Choice 1 (PC-1)
57 49 41 33 25 17 9 1
58 50 42 34 26 18 10 2
59 51 43 35 27 19 11 3
60 52 44 36 63 55 47 39
31 23 15 7 62 54 46 38
30 22 14 6 61 53 45 37
29 21 13 5 28 20 12 4
clave original, el bit 2 pasa a ser el bit 49, etc.).
1.2.2.- Dividir la clave permutada en dos mitades de 28 bits cada
una. C(0) el bloque que contiene los 28 bits de mayor peso
y D(0) los 28 bits restantes.
1.2.3.- Calcular las 16 subclaves (Empezar con i=1)
1.2.3.1.- Rotar uno o dos bits a la izquierda C(i-1) y D(i-1)
para obtener C(i) y D(i), respectivamente. El
número de bits de desplazamiento está dado por la
tabla siguiente:
Ronda 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Bits despl. 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 1
Jorge Sánchez Arriazu. Diciembre de 1999 5/10
6. Descripción del algoritmo de DES
1.2.3.2.- Concatenar C(i) y D(i) y permutar como se indica a
continuación. Así se obtiene K(i), que tiene una
longitud de 48 bits.
Permuted Choice 2 (PC-2)
14 17 11 24 1 5 3 28
15 6 21 10 23 19 12 4
26 8 16 7 27 20 13 2
41 52 31 37 47 55 30 40
51 45 33 48 44 49 39 56
34 53 46 42 50 36 29 32
1.2.3.3.- Ir a 1.2.3.1. hasta que se haya calculado K(16).
2.- Procesar el bloque de datos de 64 bits.
2.1.- Obtener un bloque de datos de 64 bits. Si el bloque contiene menos
de 64 bits debe ser completado para poder continuar con el
siguiente paso.
2.2.- Realizar la siguiente permutación del bloque:
Initial Permutation (IP)
58 50 42 34 26 18 10 2
60 52 44 36 28 20 12 4
62 54 46 38 30 22 14 6
64 56 48 40 32 24 16 8
57 49 41 33 25 17 9 1
59 51 43 35 27 19 11 3
61 53 45 37 29 21 13 5
63 55 47 39 31 23 15 7
2.3.- Dividir el bloque resultante en dos mitades de 32 bits cada una.
L(0) el bloque que contiene los 32 bits de mayor peso y R(0) el
resto.
2.4.- Aplicar las 16 subclaves obtenidas en el paso 1
2.4.1.- E(R(i)). Expandir R(i) de 32 a 48 bits de acuerdo con la
tabla que se muestra debajo:
Expansion (E)
32 1 2 3 4 5 4 5
6 7 8 9 8 9 10 11
12 13 12 13 14 15 16 17
16 17 18 19 20 21 20 21
22 23 24 25 24 25 26 27
28 29 28 29 30 31 32 1
2.4.2.- E(R(i-1)) Xor K(i). Or-exclusiva del resultado del paso
2.4.1. con K(i)
Jorge Sánchez Arriazu. Diciembre de 1999 6/10
7. Descripción del algoritmo de DES
2.4.3.- B(1), B(2),..., B(8). Partir E(R(i-1)) Xor K(i) en ocho
bloques de seis bits. B(1) representa a los bits 1-6, B(2)
representa a los bits 7-12,..., B(8) representa a los bits 43-
48.
2.4.4.- S(1)(B(1)), S(2)(B(2)),..., S(8)(B(8)). Sustituir todos los
B(j) por los valores correspondientes de las S-Cajas o tablas
de sustitución (Substitution Boxes, S-Boxes) de 6*4 bits,
según se indica en los subapartados que siguen. Todos los
valores de las S-Cajas se consideran de 4 bits de longitud.
(Ver S-cajas del algoritmo DES, página siguiente)
2.4.4.1.- Tomar los bits 1º y 6º de B(j) y formar un número
de 2 bits que llamaremos m. Este valor nos indicará
la fila en la tabla de sustitución correspondiente
S(j). Obsérvese que m=0 representa la 1ª fila y
m=3 la última.
2.4.4.2.- Con los bits 2º a 5º de B(j) formar otro número, n,
de cuatro bits que indicará la columna de S(j) en la
que buscar el valor de sustitución. En esta ocasión
n=0 representa la 1ª columna y n=15 la última
columna.
2.4.4.3.- Reemplazar B(j) con S(j)(m,n), m fila y n columna.
2.4.4.4.- Ejemplo. Sea B(3)=42, en binario B(3)=101010.
Buscaremos el nuevo valor de B(3) en S(3). Fila m
y columna n, según lo expuesto anteriormente
m=10, n=0101, y en decimal m=2 y n=5.
Por tanto, B(3) será S(3)(2,5)=15
2.4.4.5.- Volver a 2.4.4.1. hasta que todos los bloques B(j)
hayan sido reemplazados por el valor de S(j)
adecuado.
2.4.5.- P[S(1)(B(1))... S(2)(B(8))]. Concatenar los bloques B(1) a
B(8) y permutar los 32 bits (cuatro bits cada B(j)) en
función de esta tabla:
Permutation P
16 7 20 21 29 12 28 17
1 15 23 26 5 18 31 10
2 8 24 14 32 27 3 9
19 13 30 6 22 11 4 25
2.4.5.1.- Volver a 2.4.4.1. hasta que todos los bloques B(j)
hayan sido reemplazados por el valor de S(j)
adecuado.
Jorge Sánchez Arriazu. Diciembre de 1999 7/10
9. Descripción del algoritmo de DES
2.4.9.- Repetir desde 2.4.1. hasta que se hayan aplicado las 16
subclaves.
2.5.- Hacer la siguiente permutación del bloque R(16)L(16). Obsérvese
que esta vez R(16) precede a L(16)
Final Permutation (IP**-1)
40 8 48 16 56 24 64 32
39 7 47 15 55 23 63 31
38 6 46 14 54 22 62 30
37 5 45 13 53 21 61 29
36 4 44 12 52 20 60 28
35 3 43 11 51 19 59 27
34 2 42 10 50 18 58 26
33 1 41 9 49 17 57 25
(ii) Desencriptación:
Usar el mismo proceso descrito con anterioridad pero empleando las
subclaves en orden inverso, esto es, en lugar de aplicar K(1) para la primera
iteración aplicar K(16), K(15) para la segunda y así hasta K(1).
Jorge Sánchez Arriazu. Diciembre de 1999 9/10
10. Descripción del algoritmo de DES
Vectores de prueba para DES
Estos son algunos de los valores que se pueden emplear para comprobar
si la implementación que se ha llevado a cabo del algoritmo DES es
correcta.
Ejemplo 1:
Bloque a cifrar en hexadecimal:
0123456789abcdef
Clave:
133457799BBCDFF1
Cifrado:
85E813540F0AB405
Ejemplo 2:
Bloque a cifrar en hexadecimal:
8787878787878787
Clave:
0E329232EA6D0D73
Cifrado:
0000000000000000
Ejemplo 3:
Texto a cifrar:
“Your lips are smoother than vaseline“
(36 caracteres+Chr(13)+Chr(10))
En hexadecimal:
596f7572206c6970 732061726520736d 6f6f746865722074
68616e2076617365 6c696e650d0a0000
Clave: Relleno
0E329232EA6D0D73
Cifrado:
C0999FDDE378D7ED 727DA00BCA5A84EE 47F269A4D6438190
D9D52F78F5358499 828AC9B453E0E653
Ejemplo 4:
Texto a cifrar (24 Caracteres):
“Now is the time for all “
(24 Caracteres -hay un espacio en blanco del final-)
En hexadecimal:
4e6f772069732074 68652074696d6520 666f7220616c6c20
Clave:
0123456789ABCDEF
Cifrado:
3FA40E8A984D4815 6A271787AB8883F9 893D51EC4B563B53
Jorge Sánchez Arriazu. Diciembre de 1999 10/10