Introduction to Public Key Cryptography
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This document provides an introduction to public key cryptography. It explains that public key crypto uses two keys - a public key that can be shared and a private key that is kept secret. The document discusses how public key crypto works using RSA encryption as an example. It also covers other common public key crypto algorithms like Diffie-Hellman key exchange and elliptic curve cryptography. The document discusses key sizes and their relationship to security strength and provides examples of public key crypto implementations in Python.
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The document discusses various topics in cryptography including symmetric and asymmetric encryption algorithms. Symmetric algorithms like DES use a shared key for encryption and decryption while asymmetric algorithms like RSA use public-private key pairs. Digital signatures can be generated by encrypting a document hash with a private key and verified using the corresponding public key. Cryptography ensures security goals like confidentiality, integrity, authentication and non-repudiation of digital communications.
Similar to Introduction to Public Key Cryptography (20)
Secret-Key-Cryptography-ppt-by-alljobs.co_.in_.pptx
Secret-Key-Cryptography-ppt-by-alljobs.co_.in_.pptx
Practical Cryptography and Security Concepts for Developers
Practical Cryptography and Security Concepts for Developers
More from Kelley Robinson
Protecting your phone verification flow from fraud & abuse
The document discusses SMS pumping fraud and how to prevent it. SMS pumping involves abusing phone verification systems to trigger a large number of SMS messages to generate revenue from mobile carriers. Attackers enroll phone numbers from different carriers, have one-time passwords sent to each number, and carriers share the resulting SMS revenue with the attackers. The document recommends ways for websites to protect against this fraud, such as adding CAPTCHAs, setting rate limits on messages to numbers, implementing delays between verification attempts, restricting destination countries, and monitoring OTP conversion rates.
Preventing phone verification fraud (SMS pumping)
In the last year we've seen a new type of fraud become more common where fraudsters attack phone verification forms with thousands of requests. This type of attack, known as SMS pumping, causes inflated traffic to your app with the intent to make money and not to steal information. Unfortunately this means you might be hit with higher than expected bills from your telecom provider if your application isn't designed to prevent it.
This talk will describe SMS pumping in more detail, including how it compares to similar attacks like IRSF and how fraudsters profit from this tactic. You'll learn strategies to prevent the attack and improve your phone verification workflow in the process, ensuring all of the benefits of phone number verification without unintended expenses.
Auth on the web: better authentication
The document discusses improving authentication on the web while reducing friction for users. It covers using biometric authentication, background signals from devices, and turning devices into authentication keys. The presenter recommends limiting stored data, using contextual data for step-up authentication, offering device authentication where possible, and planning for fallback options in case primary authentication fails. Overall, the goal is to make authentication secure yet easy for users.
WebAuthn
Authentication is a sneaky problem - the most secure options don't usually have widespread adoption, especially among consumer applications. But what if we could fix that? Narrator: we can. WebAuthn is a somewhat new authentication standard that uses our everyday devices like phones and computers and turns them into phishing-resistant security keys. It almost sounds too good to be true. This talk will dig into how the technology works, when you can and should use it, and how to get started. We'll dig into why this isn't widely adopted yet and if or when we can expect it to be. You'll walk away with a better understanding of a new authentication channel and possibly some hope for a more secure future.
2FA in 2020 and Beyond
Security professionals agree: SMS based Two-factor Authentication (2FA) is insecure, yet thousands of companies still employ this method to secure their customer-facing applications. This talk will look at the evolution of authentication and provide a data-driven analysis of the tradeoffs between the different types of factors available.
Identiverse 2020 - Account Recovery with 2FA
You've built login for your application—and even added 2FA—but what happens when a customer upgrades their phone, loses their device, or otherwise gets locked out of their account? This session will show how to accommodate account recovery when the user has 2FA enabled while minimizing account takeover and support overhead.
Designing customer account recovery in a 2FA world
You've built login for your application—and even added 2FA—but what happens when a customer upgrades their phone, loses their device, or otherwise gets locked out of their account? This session will show how to accommodate account recovery when the user has 2FA enabled while minimizing account takeover and support overhead.
Introduction to SHAKEN/STIR
This talk will discuss the latest advancements with STIR (Secure Telephone Identity Revisited) and SHAKEN (Signature-based Handling of Asserted information using toKENs), new tech standards that use well accepted public key cryptography methods to validate caller identification. We’ll discuss the path and challenges to getting this implemented industry wide, where this tech will fall short, and what we can do to limit exposure to call spam and fraud in the meantime.
Intro to SHAKEN/STIR
This talk will discuss the latest advancements with STIR (Secure Telephone Identity Revisited) and SHAKEN (Signature-based Handling of Asserted information using toKENs), new tech standards that use well accepted public key cryptography methods to validate caller identification. We’ll discuss the path and challenges to getting this implemented industry wide, where this tech will fall short, and what we can do to limit exposure to call spam and fraud in the meantime.
PSD2, SCA, WTF?
A look at the Payment Services Directive 2 regulations and the Strong Customer Authentication requirements
Building a Better Scala Community
The document discusses how to build a better Scala community. It recommends practicing empathy by understanding others' perspectives, building trust through thoughtful questions and admitting mistakes, and empowering others by teaching, answering questions, and making space for new people. The key ideas are that community is important, should be inclusive of people from various backgrounds, and improved by experienced members helping and learning from others.
BSides SF - Contact Center Authentication
You've built login for your application—maybe you even have 2FA—but what happens when a customer calls the support number listed on your website or product?
Security teams and app developers have thought a lot about online authentication, but we haven't applied the same rigor to designing systems for authenticating over the phone.
Communication @ Startups
This document provides tips for communication at startups. It recommends knowing your audience and building relationships by sharing context and being concise. It also suggests asking thoughtful "why" questions to understand priorities and decisions. Finally, it advises documenting work through diagrams and written explanations to make "glue work" visible and help future communications.
Contact Center Authentication
You've built login for your application—maybe you even have 2FA—but what happens when a customer calls the support number listed on your website or product?
Security teams and app developers have thought a lot about online authentication, but we haven't applied the same rigor to designing systems for authenticating over the phone. At Twilio, product and engineering teams have spent the last year thinking about this problem and how to make the experience better for both the customer and the call center agent. In that time, I've called dozens of contact centers to learn about how everyone from startups to Fortune 50 companies attempt to identify and authenticate the end user. This talk will take a look at that research and outline best practices you can use in your own call centers. You'll leave the session understanding what information should be made available to the agent and what kind of product features you can build into your web or mobile application that can facilitate phone authentication.
Authentication Beyond SMS
Passwords get pwned. SMS 2FA gets compromised. We spend time clicking stop signs just to convince computers we're human. All of this in an attempt to identify a user we will probably never personally know. It's a fascinating challenge and we're up to the task!
This talk will walk through new channels for identity management beyond email and SMS. Encrypted messaging apps like WhatsApp broaden our options for delivering tokens and secure communications but lack the seamless user experience of Push Authentication or the offline benefits of TOTP. We'll dive into the tradeoffs for these approaches and help you choose the approach that will best protect you and your customers from signup to account recovery.
BSides PDX - Threat Modeling Authentication
Passwords get pwned. SMS 2FA gets compromised. We spend time clicking stop signs to convince computers we’re human. Is there a better way?
2FA Best Practices
The document discusses best practices for implementing two-factor authentication (2FA) using Authy. It covers why 2FA is important for security, different 2FA methods like SMS, push notifications, and time-based one-time passwords. The document also discusses potential issues with SMS 2FA, alternatives to SMS, onboarding users for 2FA, user experience with 2FA, and practical cryptography techniques used in 2FA apps like Authy. Several Twilio engineers provide insights into building phone verification at scale and preventing social engineering attacks using Twilio Flex.
2FA, WTF!?
You may recognize Two-factor Authentication (2FA) as an additional safeguard for protecting accounts, but do you really know how it works? This talk will show you how to implement One Time Passwords (including what's happening under the hood of those expiring tokens) and even provide a legitimate use case for QR codes! You'll come away recognizing the different approaches to implementing a 2FA solution and have a better understanding of the solution that's right for your application.
2FA WTF
Breaking down the problems with password-only authentication and some of the different options you have for 2FA
Analyzing Pwned Passwords with Spark - OWASP Meetup July 2018
The document discusses analyzing pwned passwords using Apache Spark. It provides an overview of Spark, including its evolution from RDDs to DataFrames. It also discusses the state of passwords, how Spark can be used to analyze large datasets of pwned passwords, and both the benefits and challenges of using Spark for this type of analysis. The document encourages securing authentication while providing a seamless user experience and notes that developers have a responsibility to secure authentication.
More from Kelley Robinson (20)
Protecting your phone verification flow from fraud & abuse
Protecting your phone verification flow from fraud & abuse
Designing customer account recovery in a 2FA world
Designing customer account recovery in a 2FA world
Analyzing Pwned Passwords with Spark - OWASP Meetup July 2018
Analyzing Pwned Passwords with Spark - OWASP Meetup July 2018
Recently uploaded
Supermarket Management System Project Report.pdf
Supermarket management is a stand-alone J2EE using Eclipse Juno program.
This project contains all the necessary required information about maintaining
the supermarket billing system.
The core idea of this project to minimize the paper work and centralize the
data. Here all the communication is taken in secure manner. That is, in this
application the information will be stored in client itself. For further security the
data base is stored in the back-end oracle and so no intruders can access it.
一比一原版(osu毕业证书)美国俄勒冈州立大学毕业证如何办理
原版一模一样【微信：741003700 】【(osu毕业证书)美国俄勒冈州立大学毕业证成绩单】【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
办理(osu毕业证书)美国俄勒冈州立大学毕业证【微信：741003700 】外观非常简单，由纸质材料制成，上面印有校徽、校名、毕业生姓名、专业等信息。
办理(osu毕业证书)美国俄勒冈州立大学毕业证【微信：741003700 】格式相对统一，各专业都有相应的模板。通常包括以下部分：
校徽：象征着学校的荣誉和传承。
校名:学校英文全称
授予学位：本部分将注明获得的具体学位名称。
毕业生姓名：这是最重要的信息之一，标志着该证书是由特定人员获得的。
颁发日期：这是毕业正式生效的时间，也代表着毕业生学业的结束。
其他信息：根据不同的专业和学位，可能会有一些特定的信息或章节。
办理(osu毕业证书)美国俄勒冈州立大学毕业证【微信：741003700 】价值很高，需要妥善保管。一般来说，应放置在安全、干燥、防潮的地方，避免长时间暴露在阳光下。如需使用，最好使用复印件而不是原件，以免丢失。
综上所述，办理(osu毕业证书)美国俄勒冈州立大学毕业证【微信：741003700 】是证明身份和学历的高价值文件。外观简单庄重，格式统一，包括重要的个人信息和发布日期。对持有人来说，妥善保管是非常重要的。
Call For Paper -3rd International Conference on Artificial Intelligence Advan...
* Registration is currently open *
Call for Research Papers!!!
Free – Extended Paper will be published as free of cost.
3rd International Conference on Artificial Intelligence Advances (AIAD 2024)
July 13 ~ 14, 2024, Virtual Conference
Webpage URL: https://aiad2024.org/index
Submission Deadline: June 22, 2024
Submission System URL:
https://aiad2024.org/submission/index.php
Contact Us:
Here's where you can reach us : aiad@aiad2024.org (or) aiadconference@yahoo.com
WikiCFP URL: http://wikicfp.com/cfp/servlet/event.showcfp?eventid=180509©ownerid=171656
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一比一原版(uofo毕业证书)美国俄勒冈大学毕业证如何办理
原版一模一样【微信：741003700 】【(uofo毕业证书)美国俄勒冈大学毕业证成绩单】【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
办理(uofo毕业证书)美国俄勒冈大学毕业证【微信：741003700 】外观非常简单，由纸质材料制成，上面印有校徽、校名、毕业生姓名、专业等信息。
办理(uofo毕业证书)美国俄勒冈大学毕业证【微信：741003700 】格式相对统一，各专业都有相应的模板。通常包括以下部分：
校徽：象征着学校的荣誉和传承。
校名:学校英文全称
授予学位：本部分将注明获得的具体学位名称。
毕业生姓名：这是最重要的信息之一，标志着该证书是由特定人员获得的。
颁发日期：这是毕业正式生效的时间，也代表着毕业生学业的结束。
其他信息：根据不同的专业和学位，可能会有一些特定的信息或章节。
办理(uofo毕业证书)美国俄勒冈大学毕业证【微信：741003700 】价值很高，需要妥善保管。一般来说，应放置在安全、干燥、防潮的地方，避免长时间暴露在阳光下。如需使用，最好使用复印件而不是原件，以免丢失。
综上所述，办理(uofo毕业证书)美国俄勒冈大学毕业证【微信：741003700 】是证明身份和学历的高价值文件。外观简单庄重，格式统一，包括重要的个人信息和发布日期。对持有人来说，妥善保管是非常重要的。
OOPS_Lab_Manual - programs using C++ programming language
This manual contains programs on object oriented programming concepts using C++ language.
Tools & Techniques for Commissioning and Maintaining PV Systems W-Animations ...
Join us for this solutions-based webinar on the tools and techniques for commissioning and maintaining PV Systems. In this session, we'll review the process of building and maintaining a solar array, starting with installation and commissioning, then reviewing operations and maintenance of the system. This course will review insulation resistance testing, I-V curve testing, earth-bond continuity, ground resistance testing, performance tests, visual inspections, ground and arc fault testing procedures, and power quality analysis.
Fluke Solar Application Specialist Will White is presenting on this engaging topic:
Will has worked in the renewable energy industry since 2005, first as an installer for a small east coast solar integrator before adding sales, design, and project management to his skillset. In 2022, Will joined Fluke as a solar application specialist, where he supports their renewable energy testing equipment like IV-curve tracers, electrical meters, and thermal imaging cameras. Experienced in wind power, solar thermal, energy storage, and all scales of PV, Will has primarily focused on residential and small commercial systems. He is passionate about implementing high-quality, code-compliant installation techniques.
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODEL
As digital technology becomes more deeply embedded in power systems, protecting the communication
networks of Smart Grids (SG) has emerged as a critical concern. Distributed Network Protocol 3 (DNP3)
represents a multi-tiered application layer protocol extensively utilized in Supervisory Control and Data
Acquisition (SCADA)-based smart grids to facilitate real-time data gathering and control functionalities.
Robust Intrusion Detection Systems (IDS) are necessary for early threat detection and mitigation because
of the interconnection of these networks, which makes them vulnerable to a variety of cyberattacks. To
solve this issue, this paper develops a hybrid Deep Learning (DL) model specifically designed for intrusion
detection in smart grids. The proposed approach is a combination of the Convolutional Neural Network
(CNN) and the Long-Short-Term Memory algorithms (LSTM). We employed a recent intrusion detection
dataset (DNP3), which focuses on unauthorized commands and Denial of Service (DoS) cyberattacks, to
train and test our model. The results of our experiments show that our CNN-LSTM method is much better
at finding smart grid intrusions than other deep learning algorithms used for classification. In addition,
our proposed approach improves accuracy, precision, recall, and F1 score, achieving a high detection
accuracy rate of 99.50%.
一比一原版(uoft毕业证书)加拿大多伦多大学毕业证如何办理
原版一模一样【微信：741003700 】【(uoft毕业证书)加拿大多伦多大学毕业证成绩单】【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
办理(uoft毕业证书)加拿大多伦多大学毕业证【微信：741003700 】外观非常简单，由纸质材料制成，上面印有校徽、校名、毕业生姓名、专业等信息。
办理(uoft毕业证书)加拿大多伦多大学毕业证【微信：741003700 】格式相对统一，各专业都有相应的模板。通常包括以下部分：
校徽：象征着学校的荣誉和传承。
校名:学校英文全称
授予学位：本部分将注明获得的具体学位名称。
毕业生姓名：这是最重要的信息之一，标志着该证书是由特定人员获得的。
颁发日期：这是毕业正式生效的时间，也代表着毕业生学业的结束。
其他信息：根据不同的专业和学位，可能会有一些特定的信息或章节。
办理(uoft毕业证书)加拿大多伦多大学毕业证【微信：741003700 】价值很高，需要妥善保管。一般来说，应放置在安全、干燥、防潮的地方，避免长时间暴露在阳光下。如需使用，最好使用复印件而不是原件，以免丢失。
综上所述，办理(uoft毕业证书)加拿大多伦多大学毕业证【微信：741003700 】是证明身份和学历的高价值文件。外观简单庄重，格式统一，包括重要的个人信息和发布日期。对持有人来说，妥善保管是非常重要的。
Mechatronics material . Mechanical engineering
Mechatronics is a multidisciplinary field that refers to the skill sets needed in the contemporary, advanced automated manufacturing industry. At the intersection of mechanics, electronics, and computing, mechatronics specialists create simpler, smarter systems. Mechatronics is an essential foundation for the expected growth in automation and manufacturing.
Mechatronics deals with robotics, control systems, and electro-mechanical systems.
Blood finder application project report (1).pdf
Blood Finder is an emergency time app where a user can search for the blood banks as
well as the registered blood donors around Mumbai. This application also provide an
opportunity for the user of this application to become a registered donor for this user have
to enroll for the donor request from the application itself. If the admin wish to make user
a registered donor, with some of the formalities with the organization it can be done.
Specialization of this application is that the user will not have to register on sign-in for
searching the blood banks and blood donors it can be just done by installing the
application to the mobile.
The purpose of making this application is to save the user’s time for searching blood of
needed blood group during the time of the emergency.
This is an android application developed in Java and XML with the connectivity of
SQLite database. This application will provide most of basic functionality required for an
emergency time application. All the details of Blood banks and Blood donors are stored
in the database i.e. SQLite.
This application allowed the user to get all the information regarding blood banks and
blood donors such as Name, Number, Address, Blood Group, rather than searching it on
the different websites and wasting the precious time. This application is effective and
user friendly.
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as Design technique: Modeling, abstraction, The Three models. Class Modeling: Object and Class Concept, Link and associations concepts, Generalization and Inheritance, A sample class model, Navigation of class models, and UML diagrams
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Null Bangalore | Pentesters Approach to AWS IAM
#Abstract:
- Learn more about the real-world methods for auditing AWS IAM (Identity and Access Management) as a pentester. So let us proceed with a brief discussion of IAM as well as some typical misconfigurations and their potential exploits in order to reinforce the understanding of IAM security best practices.
- Gain actionable insights into AWS IAM policies and roles, using hands on approach.
#Prerequisites:
- Basic understanding of AWS services and architecture
- Familiarity with cloud security concepts
- Experience using the AWS Management Console or AWS CLI.
- For hands on lab create account on [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
# Scenario Covered:
- Basics of IAM in AWS
- Implementing IAM Policies with Least Privilege to Manage S3 Bucket
- Objective: Create an S3 bucket with least privilege IAM policy and validate access.
- Steps:
- Create S3 bucket.
- Attach least privilege policy to IAM user.
- Validate access.
- Exploiting IAM PassRole Misconfiguration
-Allows a user to pass a specific IAM role to an AWS service (ec2), typically used for service access delegation. Then exploit PassRole Misconfiguration granting unauthorized access to sensitive resources.
- Objective: Demonstrate how a PassRole misconfiguration can grant unauthorized access.
- Steps:
- Allow user to pass IAM role to EC2.
- Exploit misconfiguration for unauthorized access.
- Access sensitive resources.
- Exploiting IAM AssumeRole Misconfiguration with Overly Permissive Role
- An overly permissive IAM role configuration can lead to privilege escalation by creating a role with administrative privileges and allow a user to assume this role.
- Objective: Show how overly permissive IAM roles can lead to privilege escalation.
- Steps:
- Create role with administrative privileges.
- Allow user to assume the role.
- Perform administrative actions.
- Differentiation between PassRole vs AssumeRole
Try at [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
Digital Twins Computer Networking Paper Presentation.pptx
A Digital Twin in computer networking is a virtual representation of a physical network, used to simulate, analyze, and optimize network performance and reliability. It leverages real-time data to enhance network management, predict issues, and improve decision-making processes.
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Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024
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The guide then proceeds to explain how to set up the SSH service within the WSL environment, an integral part of the process. Alongside this, it also provides detailed instructions on how to modify the inbound rules of the Windows firewall to facilitate the process, ensuring that there are no connectivity issues that could potentially hinder the debugging process.
The document further emphasizes on the importance of checking the connection between the Windows and WSL environments, providing instructions on how to ensure that the connection is optimal and ready for remote debugging.
It also offers an in-depth guide on how to configure the WSL interpreter and files within the PyCharm environment. This is essential for ensuring that the debugging process is set up correctly and that the program can be run effectively within the WSL terminal.
Additionally, the document provides guidance on how to set up breakpoints for debugging, a fundamental aspect of the debugging process which allows the developer to stop the execution of their code at certain points and inspect their program at those stages.
Finally, the document concludes by providing a link to a reference blog. This blog offers additional information and guidance on configuring the remote Python interpreter in PyCharm, providing the reader with a well-rounded understanding of the process.
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Introduction to Public Key Cryptography
- 2. 🔒 Practical Cryptography 🔐 Introduction to Public Key Cryptography
- 3. © 2020 TWILIO INC. ALL RIGHTS RESERVED. krobinson@twilio.com 👋👩💻🔐 Kelley Robinson @kelleyrobinson
- 4. Meet Alice and Bob 🔐 🔐 💬🤷
- 6. What is Public Key Crypto? Each entity has 2⃣ keys Public Key - to be shared Private Key - to be kept secret
- 8. Asymmetric Crypto == Public Key Crypto == PKC
- 9. RSA algorithm (there are other algorithms, we'll get to that)
- 10. What is Public Key Crypto? Two major use cases (for RSA): 1. Encrypt with Public Key 2. Sign with Private Key
- 11. ...only Bob can decode the cyphertext Encrypting with Public Key
- 12. Signing with Private Key ...only Alice can be the author
- 13. How are keys generated? TL;DR: math @kelleyrobinson
- 14. How are keys generated?
- 16. Trapdoor Functions Which is easier? 1. Find the two prime factors of 4,757 2. Multiply 67 and 71
- 17. RSA Algorithm Example# Chosen inputs p, q, e = 67, 71, 37 https://github.com/robinske/rsa-example # Calculated n = p*q x = (p - 1)*(q - 1) d = inverse_mod(e, x) # modular multiplicative inverse public_key = (e, n) private_key = (d, n) message = 123 encrypted = pow(message, e, n) decrypted = pow(encrypted, d, n) # == message 🤯 These are all trapdoor functions!
- 20. Elliptic-Curve Cryptography (ECC) y2 = x3 + ax + b Elliptic Curve Addition (Image By SuperManu [GFDL or CC BY-SA 3.0], via Wikimedia Commons)
- 21. What is Key Size? https://xkcd.com/538/
- 22. Impacts security strength, measured in bits of security What is Key Size? RSA key size of 2048 RSA key size of 3072 ECC key size of 256 112 bits of security 128 bits of security 128 bits of security
- 23. What is Security Strength? - NIST Recommendation for Key Management “a number associated with the amount of work that is required to break a cryptographic algorithm or system. ”
- 24. PKC in Python
- 25. PKC in Python # pip install cryptography from cryptography.hazmat.primitives.asymmetric import rsa private_key = rsa.generate_private_key( public_exponent=65537, key_size=2048, ... )
- 27. Encrypting public_key = private_key.public_key() ciphertext = public_key.encrypt(message, ...) plaintext = private_key.decrypt(ciphertext, ...) # returns True message == plaintext
- 28. Signing public_key = private_key.public_key() signature = private_key.sign(message, ...) # throws exception if not verified public_key.verify(signature, message, ...)
- 29. Everyday Uses of Public Key Cryptography Authy PGP and GPG JWTs (with RS256) TLS (HTTPS) Bitcoin SSH
- 30. ]
- 31. @kelleyrobinson ] Public key on the Authy servers
- 33. @kelleyrobinson ] Your device signs with your private key
- 35. Algorithm
- 38. @kelleyrobinson __________________ | | Don't roll your own crypto! |__________________| (__/) || (•ㅅ•) || / づ