The document presents a web-based application for encrypting messages using substitution and transposition techniques like the Caesar cipher, Playfair cipher, rail fence transposition, and simple columnar transposition. The application aims to securely transmit sensitive information over the internet by making encryption accessible without specialized cryptography knowledge. It explains each encryption technique with examples, and concludes that combining multiple ciphers in the system ensures confidentiality and makes encrypted messages difficult to crack without the key.
A short introduction to cryptography. What is public and private key cryptography? What is a Caesar Cipher and how do we decrypt it? How does RSA work?
A short introduction to cryptography. What is public and private key cryptography? What is a Caesar Cipher and how do we decrypt it? How does RSA work?
The presentation covers the following:
Basic Terms
Cryptography
The General Goals of Cryptography
Common Types of Attacks
Substitution Ciphers
Transposition Cipher
Steganography- “Concealed Writing”
Symmetric Secret Key Encryption
Types of Symmetric Algorithms
Common Symmetric Algorithms
Asymmetric Secret Key Encryption
Common Asymmetric Algorithms
Public Key Cryptography
Hashing Techniques
Hashing Algorithms
Digital Signatures
Transport Layer Security
Public key infrastructure (PKI)
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:
Security+ Guide to Network Security Fundamentals, 3rd Edition, by Mark Ciampa
Knowledge and skills required for Network Administrators and Information Technology professionals to be aware of security vulnerabilities, to implement security measures, to analyze an existing network environment in consideration of known security threats or risks, to defend against attacks or viruses, and to ensure data privacy and integrity. Terminology and procedures for implementation and configuration of security, including access control, authorization, encryption, packet filters, firewalls, and Virtual Private Networks (VPNs).
CNIT 120: Network Security
http://samsclass.info/120/120_S09.shtml#lecture
Policy: http://samsclass.info/policy_use.htm
Many thanks to Sam Bowne for allowing to publish these presentations.
A New Modified Version of Caser Cipher AlgorithmIJERD Editor
Computers uses a file which is a collection of information. The information is sensitive part of the organizations , and can be classified into simple, important, and critical information. Any loss or threat to information can prove to be great loss to the organization as well to people. The most important goal for designing any encryption algorithm is the security against unauthorized attacks. This paper introduces a new method to enhance the performance of the (Cesar Cipher algorithm ). This is done by replacing the single key (Offsite) that used by the standard algorithm with dynamic key his value is changed for each letter depending on its position and the value of the previous letter. This replacement adds a new level of protection strength and more robustness against breaking methods. One more powerful technique added by the proposed algorithm is repeat the encryption for the entered text several times.
Enhancing security of caesar cipher using differenteSAT Journals
Abstract Cryptography is an art and science of converting original message into non readable form. There are two techniques for converting data into no readable form:1)Transposition technique 2)Substitution technique. Caesar cipher is an example of substitution method. As Caesar cipher has various limitations so this talk will present a perspective on combination of techniques substitution and transposition. In this paper I have focused on the well known classical techniques the aim was to induce some strength to these classical encryption for that purpose I blended classical encryption with the some more techniques. my proposed method showed that it is better in terms of providing more security to any given text message. In our experiments I took Caesaer Ciphers as representatives of Classical Techniques. To make it more secure I have used some techniques like I have used multiple level Row Transposition Ciphers, encryption with same key at each level and encryption with different key at each level. Keywords— substitution, transposition, cryptography, Caesar cipher
The presentation covers the following:
Basic Terms
Cryptography
The General Goals of Cryptography
Common Types of Attacks
Substitution Ciphers
Transposition Cipher
Steganography- “Concealed Writing”
Symmetric Secret Key Encryption
Types of Symmetric Algorithms
Common Symmetric Algorithms
Asymmetric Secret Key Encryption
Common Asymmetric Algorithms
Public Key Cryptography
Hashing Techniques
Hashing Algorithms
Digital Signatures
Transport Layer Security
Public key infrastructure (PKI)
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:
Security+ Guide to Network Security Fundamentals, 3rd Edition, by Mark Ciampa
Knowledge and skills required for Network Administrators and Information Technology professionals to be aware of security vulnerabilities, to implement security measures, to analyze an existing network environment in consideration of known security threats or risks, to defend against attacks or viruses, and to ensure data privacy and integrity. Terminology and procedures for implementation and configuration of security, including access control, authorization, encryption, packet filters, firewalls, and Virtual Private Networks (VPNs).
CNIT 120: Network Security
http://samsclass.info/120/120_S09.shtml#lecture
Policy: http://samsclass.info/policy_use.htm
Many thanks to Sam Bowne for allowing to publish these presentations.
A New Modified Version of Caser Cipher AlgorithmIJERD Editor
Computers uses a file which is a collection of information. The information is sensitive part of the organizations , and can be classified into simple, important, and critical information. Any loss or threat to information can prove to be great loss to the organization as well to people. The most important goal for designing any encryption algorithm is the security against unauthorized attacks. This paper introduces a new method to enhance the performance of the (Cesar Cipher algorithm ). This is done by replacing the single key (Offsite) that used by the standard algorithm with dynamic key his value is changed for each letter depending on its position and the value of the previous letter. This replacement adds a new level of protection strength and more robustness against breaking methods. One more powerful technique added by the proposed algorithm is repeat the encryption for the entered text several times.
Enhancing security of caesar cipher using differenteSAT Journals
Abstract Cryptography is an art and science of converting original message into non readable form. There are two techniques for converting data into no readable form:1)Transposition technique 2)Substitution technique. Caesar cipher is an example of substitution method. As Caesar cipher has various limitations so this talk will present a perspective on combination of techniques substitution and transposition. In this paper I have focused on the well known classical techniques the aim was to induce some strength to these classical encryption for that purpose I blended classical encryption with the some more techniques. my proposed method showed that it is better in terms of providing more security to any given text message. In our experiments I took Caesaer Ciphers as representatives of Classical Techniques. To make it more secure I have used some techniques like I have used multiple level Row Transposition Ciphers, encryption with same key at each level and encryption with different key at each level. Keywords— substitution, transposition, cryptography, Caesar cipher
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Topics listed below are explained in the PPT:
Introduction
CIA Triad
Mechanisms of Cryptography
OSI Security Architecture
Security Attacks
Security Mechanisms
Security Services
Cryptography vs Steganography
Network Security Model
Cryptographic techniques
Stream Cipher vs Block cipher
In this whole idea of v symmetric cipher model and also cryptography and cryptanalytics, also substitution techniques and transposition techniques and steganography.
An introductory presentation on cryptography. From ancient ciphers to modern public key encryption, it follows the evolution of a science and how it affects society.
Multiple Encryption using ECC and Its Time Complexity AnalysisIJCERT
Rapid growth of information technology in present era, secure communication, strong data encryption technique and trusted third party are considered to be major topics of study. Robust encryption algorithm development to secure sensitive data is of great significance among researchers at present. The conventional methods of encryption used as of today may not sufficient and therefore new ideas for the purpose are to be design, analyze and need to be fit into the existing system of security to provide protection of our data from unauthorized access. An effective encryption/ decryption algorithm design to enhance data security is a challenging task while computation, complexity, robustness etc. are concerned. The multiple encryption technique is a process of applying encryption over a single encryption process in a number of iteration. Elliptic Curve Cryptography (ECC) is well known and well accepted cryptographic algorithm and used in many application as of today. In this paper, we discuss multiple encryptions and analyze the computation overhead in the process and study the feasibility of practical application. In the process we use ECC as a multiple-ECC algorithm and try to analyze degree of security, encryption/decryption computation time and complexity of the algorithm. Performance measure of the algorithm is evaluated by analyzing encryption time as well as decryption time in single ECC as well as multiple-ECC are compared with the help of various examples.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
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Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
substitution and transposition techniques_ppt.pptx
1. Sanjivani Rural Education Society’s
Sanjivani College of Engineering, Kopargaon
(An Autonomous Institute Affiliated to Savitribai Phule Pune University)
Cyber Security CIA Presentation On
“Web based Application for Encryption using Substitution and Transposition Techniques”
Presented By
Ms. Mahajan Vaishnavi (82)
Ms. Bornare Gauri (83)
Ms. Nagpure Latika (84)
Ms. Bornare Anjali (86) Prof. M. Agrawal Mam
(Subject Teacher)
Department of Computer Engineering
2. Problem Statement
The problem that the Web-based application for encryption using substitution and transposition techniques
project aims to solve the need for a secure way of transmitting and storing sensitive information over the internet.
With the increasing use of the internet, there is a significant risk of sensitive information being intercepted by
unauthorized parties, which can lead to severe consequences such as identity theft, financial loss, and privacy
breaches. Therefore, there is a need for a secure way of transmitting and storing sensitive information over the
internet.
3. Objectives
● To develop a user-friendly web-based application that allows users to encrypt sensitive information using
substitution and transposition techniques.
● To make encryption techniques accessible to users who may not have specialized knowledge or skills in
computer science or cryptography.
● To implement substitution and transposition techniques to increase the security of messages and protect them
from interception by unauthorized parties.
4. Substitution
Substitution involves replacing each letter or character in the plaintext with a corresponding letter or
character from a substitution table. The substitution table contains a set of predefined mappings between letters or
characters in the plaintext and ciphertext. For example, in a simple substitution cipher, every occurrence of the letter
'A' in the plaintext could be replaced with the letter 'X' in the ciphertext, and so on.
Substitution Techniques:
1. Caesar Cipher
2. Playfair Cipher
5. 1. Caesar Cipher
A Caesar cipher is a simple method of encoding messages. Caesar ciphers use a substitution method where letters in
the alphabet are shifted by some fixed number of spaces to yield an encoding alphabet. A Caesar cipher with a shift
of 1. 1 would encode an A as a B, an M as an N, and a Z as an A, and so on.
The formula of encryption is:
En (x) = (x + n) mod 26
Example
Plain Text: Security
Key: 3
6. Solution:
Key: 3
Cipher Text: VHFXULWB
Plain Text S → 18 En = (18+ 3) mod 26 Cipher Text 21 → V
Plain Text E → 04 En = (04+ 3) mod 26 Cipher Text 07 → H
Plain Text C → 02 En = (02+ 3) mod 26 Cipher Text 05 → F
Plain Text U → 20 En = (20+ 3) mod 26 Cipher Text 23 → X
Plain Text R → 17 En = (17+ 3) mod 26 Cipher Text 20 → U
Plain Text I → 08 En = (08+ 3) mod 26 Cipher Text 11 → L
Plain Text T → 19 En = (19+ 3) mod 26 Cipher Text 22 → W
Plain Text Y → 24 En = (24+ 3) mod 26 Cipher Text 27 → B
7. 2. Playfair Cipher
Playfair cipher is an encryption algorithm to encrypt or encode a message. It is the same as a traditional
cipher. The only difference is that it encrypts a digraph (a pair of two letters) instead of a single letter. The Playfair
cipher is the earliest and best-known digraph substitution cipher to use symmetry encryption.
Example
Plain text: Hide the key
Key: Playfair
8. Solution
Step 1: 5 X 5 Matrix
Step 2: Pair of two letters:
Hi de th ek ey
10. Transposition
Transposition involves rearranging the order of the characters or letters in the plaintext to form the
ciphertext. In transposition, the position of the letters in the plaintext is changed to create the ciphertext. For
example, a transposition cipher might rearrange the order of the letters in the plaintext message so that the letter in
the first position is moved to the third position, the letter in the second position is moved to the fifth position, and so
on.
Transposition Techniques:
1. Rail Fence Transposition
2. Simple Columnar
11. 1. Rail Fence Transposition
The rail fence cipher (sometimes called zigzag cipher) is a transposition cipher that jumbles up the order of
the letters of a message using a basic algorithm.
The rail fence cipher works by writing your message on alternate lines across the page, and then reading off
each line in turn.
Example
Plain text: Security
Key: 2
13. 2. Simple Columnar Transposition
The columnar transposition cipher is a fairly simple, easy to implement cipher. It is a transposition cipher that
follows a simple rule for mixing up the characters in the plaintext to form the ciphertext.Although weak on its own,
it can be combined with other ciphers, such as a substitution cipher, the combination of which can be more difficult
to break than either cipher on it's own.
Example
Plain text: Security
Key: key
17. Conclusion
In conclusion, the system that uses the concepts of transposition and substitution for encrypting the messages
using Rail fence, Playfair cipher, Caesar cipher, and Simple Columnar Transposition is a secure and effective
method of ensuring the confidentiality and privacy of sensitive information. Overall, the use of a combination of
these above ciphers in a system ensures that the message is encrypted in a way that is difficult to crack without the
key.