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This document discusses cloud cryptography and provides an overview of how it works. It is presented by Sir Abbas Rahman to students Muhammad Ahmad, Waqas Zahid, and Saqib Ali. Cloud cryptography uses encryption to secure data stored in the cloud and allows users to access shared cloud services securely. It can encrypt data in several ways including pre-encrypting data before uploading it, end-to-end encryption between senders and receivers, file encryption, and full disk encryption. Popular cryptographic algorithms used for cloud security include symmetric key algorithms like AES, asymmetric key algorithms like RSA, and hashing algorithms. The advantages of cloud cryptography are that it keeps data private, detects unauthorized access, and complies with security regulations
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This document provides an overview of cryptography. It defines cryptography as the science of secret writing and discusses its use in applications like ATM cards and passwords. It describes the basic components of cryptography including plaintext, ciphertext, ciphers, keys, and algorithms. It differentiates between symmetric and asymmetric key cryptography. It provides examples of traditional and modern ciphers, including DES, AES, and RSA algorithms. In conclusion, it states that cryptography techniques help maintain data security, privacy, and integrity.
Cryptography
This document presents an overview of cryptography including its definition, history, basic terms, classifications, techniques, advantages, disadvantages, and applications. Cryptography is defined as the art and science of achieving security by encoding messages. The earliest evidence of cryptography dates back 4000 years to ancient Egypt. Techniques covered include symmetric and asymmetric encryption, transposition ciphers, substitution ciphers, block ciphers, stream ciphers, hashing, and steganography. Advantages of cryptography include confidentiality, authentication, data integrity, and non-repudiation, while disadvantages include reduced accessibility and inability to ensure high availability. Cryptography has applications in defense, e-commerce, business transactions, internet payments, user identification, and data security.
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Many thanks to Sam Bowne for allowing to publish these presentations.
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This document summarizes an encryption technique for ensuring security in cloud computing environments. It begins by introducing cloud computing and some of the security concerns with storing data in the cloud. These include lack of transparency about security measures, incomplete or corrupted data uploads, and potential data theft without the user's knowledge. The document then reviews some traditional encryption algorithms like the Caesar cipher, Vigenere cipher, and Playfair cipher and their limitations. It proposes using the Advanced Encryption Standard (AES) algorithm with Rijndael, which is more secure than older standards. The technique implements AES encryption with an authentication channel using challenge-response and encrypts the data before uploading to the cloud. This ensures the encrypted data is useless even if stolen,
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Businesses rely heavily on cloud technology but this creates vulnerabilities that malicious actors may exploit to access private information. Encryption is a fundamental element of cloud security that scrambles data so even if accessed by malicious parties, the information cannot be viewed. There are two main types of encryption: symmetric uses one key for encryption and decryption while asymmetric uses a public key to encrypt and a private key to decrypt, providing better security. Encryption should be used to protect data both when in transit between networks and when at rest in storage to provide comprehensive security and prevent attacks. While encryption is effective, its additional costs can lead businesses to underutilize it despite the higher costs of data breaches.
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Youtube Video by the end of the presentation
https://www.youtube.com/watch?v=3aALFfu348U
Link
https://wp.me/p8BMmp-mA
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Chapter-1
Introduction to objective, scope and outcome the subject
Chapter 2
Introduction: Scope and Specialization of Civil Engineering, Role of civil Engineer in Society, Impact of infrastructural development on economy of country.
Chapter 3
Surveying: Object Principles & Types of Surveying; Site Plans, Plans & Maps; Scales & Unit of different Measurements.
Linear Measurements: Instruments used. Linear Measurement by Tape, Ranging out Survey Lines and overcoming Obstructions; Measurements on sloping ground; Tape corrections, conventional symbols. Angular Measurements: Instruments used; Introduction to Compass Surveying, Bearings and Longitude & Latitude of a Line, Introduction to total station.
Levelling: Instrument used Object of levelling, Methods of levelling in brief, and Contour maps.
Chapter 4
Buildings: Selection of site for Buildings, Layout of Building Plan, Types of buildings, Plinth area, carpet area, floor space index, Introduction to building byelaws, concept of sun light & ventilation. Components of Buildings & their functions, Basic concept of R.C.C., Introduction to types of foundation
Chapter 5
Transportation: Introduction to Transportation Engineering; Traffic and Road Safety: Types and Characteristics of Various Modes of Transportation; Various Road Traffic Signs, Causes of Accidents and Road Safety Measures.
Chapter 6
Environmental Engineering: Environmental Pollution, Environmental Acts and Regulations, Functional Concepts of Ecology, Basics of Species, Biodiversity, Ecosystem, Hydrological Cycle; Chemical Cycles: Carbon, Nitrogen & Phosphorus; Energy Flow in Ecosystems.
Water Pollution: Water Quality standards, Introduction to Treatment & Disposal of Waste Water. Reuse and Saving of Water, Rain Water Harvesting. Solid Waste Management: Classification of Solid Waste, Collection, Transportation and Disposal of Solid. Recycling of Solid Waste: Energy Recovery, Sanitary Landfill, On-Site Sanitation. Air & Noise Pollution: Primary and Secondary air pollutants, Harmful effects of Air Pollution, Control of Air Pollution. . Noise Pollution Harmful Effects of noise pollution, control of noise pollution, Global warming & Climate Change, Ozone depletion, Greenhouse effect
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1. Palancharmy, Basic Civil Engineering, McGraw Hill publishers.
2. Satheesh Gopi, Basic Civil Engineering, Pearson Publishers.
3. Ketki Rangwala Dalal, Essentials of Civil Engineering, Charotar Publishing House.
4. BCP, Surveying volume 1
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- 3. Our Group Members: MUHAMMAD AHMAD BSITE-19-33 WAQAS ZAHID BSITE-19-59 SAQIB ALI BSITE-19-27
- 4. Overview of Cloud Cryptography: Cloud Cryptography is encryption that safeguards data stored within the cloud. Several measures are being placed within cloud cryptography which adds a strong layer of protection to secure data to avoid being breached, hacked or affected by malware. Any data hosted by cloud providers are secured with encryption, permitting users to access shared cloud services securely and conveniently. Cloud Cryptography secures sensitive data without delaying the delivery of information.
- 5. Cloud cryptography is based on encryption, in which computers and algorithms are utilized to scramble text into cipher-text. This cipher-text can then be converted into plaintext through an encryption key, by decoding it with a series of bits. The encryption of data can take place in one of the following ways: How does cryptography in the cloud work?
- 6. 1. Pre-encrypted data which is synced with the cloud- There is software accessible to pre-encrypt it before information gets to the cloud, making it impossible to read for anyone who tries to hack it. 2. End-to-end encryption- Senders and receivers send messages, whereby they are the only ones who can read them. 3. File encryption- File encryption occurs when at rest, data is encrypted so that if an unauthorized person tries to intercept a file, they will not be able to access the data it holds. 4. Full disk encryption- When any files are saved on an external drive, they will be automatically encrypted. This is the key method to secure hard drives on computers.
- 7. How the data on the cloud be secured by Cryptography? Cloud cryptography brings the same level of security to cloud services by securing data stored with encryption. It can protect sensitive cloud data without delaying data transmission. Many organizations define various cryptographic protocols for their cloud computing to keep a balance between security and efficiency. The cryptography algorithms used for Cloud Security are:
- 8. 1. Symmetric Key Cryptographic Algorithm- This algorithm gives authentication and authorization to the data because data encrypted with a single unique key cannot be decrypted with any other key. Data Encryption Standard (DES) , Triple Data Encryption Standard (3DES), Advance Encryption Standard (AES) are the most popular Symmetric-key Algorithms which are used in cloud computing for cryptography. 2. Asymmetric Key Cryptographic Algorithm- This algorithm is using two separate different keys for the encryption and decryption process in order to protect the data on the cloud. The algorithms used for cloud computing are Digital Signature Algorithm (DSA), (RSA) and Diffie-Helman Algorithm. 3. Hashing- It is mainly used for indexing and recovering items in a database. It also utilizes two separate keys for encrypting and decrypting a message.
- 9. Advantages of Cloud Cryptography: • The data remains private for the users. This reduces cybercrime from hackers. • Organization receive notifications immediately if an unauthorized person tries to make modifications. The users who have cryptographic keys are granted access. • The encryption prevents the data from being vulnerable when the data is being brought over from one computer to another, • Cloud encryption permits organizations to be proactive in their defense against data breaches and cyberattacks and have become a necessity in today’s data-driven world. • Receivers of the data have the ability to identify if the data received is corrupted, permitting an immediate response and solution to the attack. • Encryption is one of the safest methods to store and transfer the data as it complies with the restrictions imposed by organizations such as FIPS, FISMA, HIPAA or PCI/DSS.
- 10. Disadvantages of Cloud Cryptography: • Cloud cryptography only grants limited security to the data which is already in transit. • It needs highly advanced systems to maintain encrypted data. • The systems must be scalable enough to upgrade which adds to the involved expenses. • Overprotective measures can create difficulties for organizations when recovering data.
- 11. Thank You For Listening Us! Any Questions?