This presentation is created for Applied Data Communication lecture of Computer Systems Engineering master programme at Tallinn University of Technology
Key management: Introduction, How public key distribution done, Diffie Hellman Key Exchage Algorithm,Digital Certificate. Key Management using Digital certificate is done etc. wireshark screenshot showing digital cetificate.
Introduction to Public key Cryptosystems with block diagrams
Reference : Cryptography and Network Security Principles and Practice , Sixth Edition , William Stalling
Diffie–Hellman key exchange is a method of securely exchanging cryptographic keys over a public channel and was one of the first public-key protocols as originally conceptualized by Ralph Merkle and named after Whitfield Diffie and Martin Hellman.
An introduction to asymmetric cryptography with an in-depth look at RSA, Diffie-Hellman, the FREAK and LOGJAM attacks on TLS/SSL, and the "Mining your P's and Q's attack".
Module 4: Key Management and User Authentication
X.509 certificates- Public Key infrastructure-remote user authentication principles-remote user
authentication using symmetric and asymmetric encryption-Kerberos V5
Key management: Introduction, How public key distribution done, Diffie Hellman Key Exchage Algorithm,Digital Certificate. Key Management using Digital certificate is done etc. wireshark screenshot showing digital cetificate.
Introduction to Public key Cryptosystems with block diagrams
Reference : Cryptography and Network Security Principles and Practice , Sixth Edition , William Stalling
Diffie–Hellman key exchange is a method of securely exchanging cryptographic keys over a public channel and was one of the first public-key protocols as originally conceptualized by Ralph Merkle and named after Whitfield Diffie and Martin Hellman.
An introduction to asymmetric cryptography with an in-depth look at RSA, Diffie-Hellman, the FREAK and LOGJAM attacks on TLS/SSL, and the "Mining your P's and Q's attack".
Module 4: Key Management and User Authentication
X.509 certificates- Public Key infrastructure-remote user authentication principles-remote user
authentication using symmetric and asymmetric encryption-Kerberos V5
The presentation include:
-Diffie hellman key exchange algorithm
-Primitive roots
-Discrete logarithm and discrete logarithm problem
-Attacks on diffie hellman and their possible solution
-Key distribution center
This PPT explains about the term "Cryptography - Encryption & Decryption".
This PPT is for beginners and for intermediate developers who want to learn about Cryptography.
I have also explained some famous ciphers like AES, DES and RSA.
Do not forget to like.
E-MAIL, IP & WEB SECURITY
E-mail Security: Security Services for E-mail-attacks possible through E-mail – establishing keys privacy-authentication of the source-Message Integrity-Non-repudiation-Pretty Good Privacy-S/MIME. IPSecurity: Overview of IPSec – IP and IPv6-Authentication Header-Encapsulation Security Payload (ESP)-Internet Key Exchange (Phases of IKE, ISAKMP/IKE Encoding). Web Security:
The presentation include:
-Diffie hellman key exchange algorithm
-Primitive roots
-Discrete logarithm and discrete logarithm problem
-Attacks on diffie hellman and their possible solution
-Key distribution center
This PPT explains about the term "Cryptography - Encryption & Decryption".
This PPT is for beginners and for intermediate developers who want to learn about Cryptography.
I have also explained some famous ciphers like AES, DES and RSA.
Do not forget to like.
E-MAIL, IP & WEB SECURITY
E-mail Security: Security Services for E-mail-attacks possible through E-mail – establishing keys privacy-authentication of the source-Message Integrity-Non-repudiation-Pretty Good Privacy-S/MIME. IPSecurity: Overview of IPSec – IP and IPv6-Authentication Header-Encapsulation Security Payload (ESP)-Internet Key Exchange (Phases of IKE, ISAKMP/IKE Encoding). Web Security:
Provably Secure Three Party Authenticated Quantum Key Distribution ProtocolsAvinash Varma Kalidindi
This work presents quantum key distribution protocols (QKDPs) to safeguard security in large networks, using in new directions in classical cryptography and quantum cryptography. Two three-party QKDPs, one with implicit user authentication and the other with explicit mutual authentication, are proposed to demonstrate the merits of the new combination, which include the following:
1) Security against such attacks as man-in-the-middle, eavesdropping and replay.
2) Efficiency is improved as the proposed protocols contain the fewest number of communication rounds among existing QKDPs.
3) Two parties can share and use a long-term secret (repeatedly). To prove the security of the proposed schemes, this work also presents a new primitive called the Unbiased-Chosen Basis (UCB) assumption.
Project Execution: https://vimeo.com/AvinashVarma/provably
As data security becomes of paramount importance, we are going to need to have a reasonable understanding of encryption and encryption techniques. We will discuss the different types of encryption techniques and understand the difference between hashing (one way encryption) and encryption (designed to be two way). We will look at what is industry best practice for encryption today, and why. We will also look at some issues relating to performance of encryption.
This Project has been developed to demonstrate Network Security and Encryption Techniques and It’s Various Methods. Now a days IT security is most required thing in even of daily routine life like sending emails or even text messages. because we are not aware of security risks and keep our valuable data like our personal details, Our Bank Account Details or even Our Net Banking Passwords & ATM Pins on public mail/mail server. That is not enough secure. That’s why we require some security algorithms that can secure our data. In this project we have studied most of them and implemented the basic things in our project.
this presentation is on block cipher modes which are used for encryption and decryption to any message.That are Defined by the National Institute of Standards and Technology . Block cipher modes of operation are part of symmetric key encryption algorithm.
i hope you may like this.
In cryptography, a block cipher is a deterministic algorithm operating on ... Systems as a means to effectively improve security by combining simple operations such as .... Finally, the cipher should be easily cryptanalyzable, such that it can be ...
A brief discussion of network security and an introduction to cryptography. We end the presentation with a discussion of the RSA algorithm, and show how it works with a basic example.
In cryptography, encryption is the process of encoding a message or information in such a way that only authorized parties can access it and those who are not authorized cannot. Encryption does not itself prevent interference, but denies the intelligible content to a would-be interceptor.
International Journal of Engineering Research and Development (IJERD)IJERD Editor
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Encryption is a fundamental concept in cryptography that involves the process of converting plaintext (readable and understandable data) into ciphertext (encoded and unintelligible data) using a mathematical algorithm and an encryption key. The primary purpose of encryption is to ensure the confidentiality and privacy of sensitive information during transmission or storage.
In the encryption process:
1. **Plaintext:** This is the original, readable data that is to be protected. It could be a message, a file, or any form of digital information.
2. **Encryption Algorithm:** An encryption algorithm is a set of mathematical rules and procedures that transform the plaintext into ciphertext. Common encryption algorithms include Advanced Encryption Standard (AES), RSA, and Triple DES.
3. **Encryption Key:** The encryption key is a piece of information used by the encryption algorithm to perform the transformation. The key determines the specific pattern and method by which the plaintext is converted into ciphertext. The strength of the encryption often depends on the length and randomness of the key.
4. **Ciphertext:** This is the result of the encryption process—the transformed and encoded data that appears random and is indecipherable without the corresponding decryption key.
Encryption serves several important purposes in the field of cryptography:
- **Confidentiality:** The primary goal of encryption is to keep information confidential and secure from unauthorized access. Even if an unauthorized party intercepts the ciphertext, they should be unable to understand or decipher it without the correct decryption key.
- **Integrity:** Encryption helps ensure the integrity of data by providing a means to detect any unauthorized modifications. If the ciphertext is altered, the decryption process will produce incorrect results, alerting the recipient to potential tampering.
- **Authentication:** In some encryption scenarios, the use of digital signatures or authenticated encryption helps verify the origin and authenticity of the encrypted data.
- **Secure Communication:** Encryption is widely used to secure communication over networks, such as the internet. Protocols like HTTPS (HTTP Secure) use encryption to protect the confidentiality of data transmitted between a web browser and a web server.
- **Data-at-Rest Protection:** Encryption is applied to data stored on devices or servers, ensuring that even if physical access is gained, the data remains protected from unauthorized viewing.
In summary, encryption is a crucial tool in the field of cryptography, providing a means to safeguard the confidentiality, integrity, and authenticity of sensitive information in various digital environments.
This presentation is created for Entrepreneurship and Businness Planning lecture of Computer Systems Engineering master programme at Tallinn University of Technology
I kept a learning diary for my entrepreneurship class studies at Tallinn University of Technology. Here is my reflections about entrepreneurship. Enjoy reading!
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
Let's dive deeper into the world of ODC! Ricardo Alves (OutSystems) will join us to tell all about the new Data Fabric. After that, Sezen de Bruijn (OutSystems) will get into the details on how to best design a sturdy architecture within ODC.
2. 2
What is Encryption?What is Encryption?
Encryption is the process of encoding
messages or information in such a way
that only authorized parties can read it.
13. 13
EncryptionEncryption
Generates a ciphertext from a plaintext using an
encryption key and an encryption algorithm (cipher)
It is a two way process:
an encrypted data is expected to be decrypted later.
17. 17
Symmetric Key EncryptionSymmetric Key Encryption
Faster compared to public key encryption
Key needs to be stored securely (only accessed when required)
Secure channel required to transfer the key
18. 18
Public Key EncryptionPublic Key Encryption
Requires two keys:
Public Key: used for encryption
Private Key: used for decryption
All communicating parties exchange their public keys
Sender encrypts the plaintext using receiver's public key
Receiver decrypts the ciphertext using their own private key
19. 19
Public Key EncryptionPublic Key Encryption
Slower compared to Symmetric Key Encryption
Public key & ciphertext can be sent over an
insecure channel
More secure because there is no need to share
private keys with anyone
20. 20
Public Key EncryptionPublic Key Encryption
Public Key
(share with pink)
Private Key
(keep it secret)
Public Key
(share with blue)
Private Key
(keep it secret)
22. 22
Logic Behind the KeysLogic Behind the Keys
Trying to find a prize behind a series of number of doors
23. 23
Public & Symmetric Key MixPublic & Symmetric Key Mix
Performance ? Security ?
Public key encryption used to exchange keys
Symmetric key encryption used to encrypt data
25. 25
Encryption AlgorithmsEncryption Algorithms
An encryption algorithm is called "cipher"
There are two types of ciphers:
Block cipher
Stream cipher
Two concepts are very important for both of them:
Prime numbers
Entropy for random number generation
26. 26
Block CipherBlock Cipher
Operates on fixed-size blocks (N bits) and uses fixed-size keys (K bits)
1. Reads N-bits of data from the plaintext
2. Uses the key and applies the encryption algorithm
3. Produces ciphertext in size of N-bits
4. Repeats steps 1-4 until all plaintext is processed
27. 27
Block Cipher - AESBlock Cipher - AES
One of the most popular block ciphers is the AES algorithm.
Some other examples are: DES, Blowfish, RC5, ...
AES stands for Advanced Encryption Standard
Works on 128 bits (16 bytes) of blocks
Uses 128, 192 or 256 bits of keys
Operates on a 4x4 matrix of bytes
There are four stages in the algorithm:
1. KeyExpansions: Keys are derived from the provided key
2. InitialRound: AddRoundKey
3. Rounds: SubBytes, ShiftRows, MixColumns, AddRoundKey
4. FinalRound: SubBytes, ShiftRows, AddRoundKey
29. 29
Stream CipherStream Cipher
Operates on variable-size blocks (N bits) and uses random-size keys
1. Generates a random number N
2. Reads N-bits of data from the plaintext
3. Uses the key and applies the encryption algorithm
4. Produces ciphertext in size of N-bits
5. Repeats steps 1-5 until all plaintext is processed
A popular stream cipher algorithm is RC4.
However, it is replaced by RC5, a block cipher algorithm.
30. 30
Key Distribution MethodsKey Distribution Methods
The main concern of a key distribution method is how to securely
supply keys between all communicating parties
There are some important security questions we must consider:
Symmetric Key Encryption
Is the shared key stored securely? Is it compromised?
Is the communication channel secure?
Public Key Encryption
Am I encrypting for the intended receiver?
A key distribution method helps us with those concerns.
31. 31
Key Distribution MethodsKey Distribution Methods
There are various different key distribution methods for different
encryption types:
In symmetric key encryption, trusted key distribution
center (KDC) is acting as intermediary between parties
In public key encryption, public key servers are used for both
uploading and downloading public keys
One another method is using a public key infrastructure (PKI)
to share SSL certificates. A Certificate Authority (CA) provides
public keys and also validates SSL certificates
32. 32
Use-Case: GPGUse-Case: GPG
GPG (GNU Privacy Guard) is a very popular application
that uses public key encryption
Most commonly used for encryption / decryption of
files & email messages
Available for many platforms: Linux, Mac OS X,
Microsoft Windows, BSD, etc...
There are very large key servers to distribute public
keys (e.g., MIT PGP Public Key Server)
