Symmetric Key Cryptography | Stream Cipher & Block Cipher Explained | Network Security | Simplilearn
This presentation on Symmetric Key Cryptography will acquaint you with the the process of symmetric encryption and decryption. Here, we take a small recap into cryptography, the working and applications of symmetric key cryptography, and it's advantages. We also have Stream Ciphers and Block ciphers explained, which form a major part of network security. The topics covered in this presentation on symmetric key cryptography are: 1. What is Cryptography 2. Applications of Symmetric Key Cryptography 3. What is Symmetric Key Cryptography 4. Private key Cryptography 5. Types of Encryption 6. Advantages of Symmetric Key Cryptography Simplilearn Cyber Security Expert Master’s Program provides cyber security professionals with foundational, intermediate, and advanced security skills through industry-leading certification courses, including CompTIA Security+, CEH, CISM, CISSP and CCSP. The program begins with introductory-level cybersecurity skills training, then progresses to advanced cybersecurity technologies such as reverse engineering, penetration testing techniques, and many more. This training program will enable you to: Implement technical strategies, tools, and techniques to secure data and information for your organization 1. Adhere to ethical security behaviour for risk analysis and mitigation 2. Understand security in cloud computing architecture in depth 3. Comprehend legal requirements, privacy issues and audit process methodologies within the cloud environment 4. Focus on IT compliance and the integrity of enterprise systems to establish a more secure enterprise IT framework At the end of this Cyber Security Master’s Program, you will be equipped with the following skillsets: 1. Install, configure and deploy public key infrastructure and network components while assessing and troubleshooting issues to support organizational security 2. Master advanced hacking concepts to manage information security efficiently 3. Design security architecture and framework for a secure IT operation 4. Frame cloud data storage architectures and security strategies, and utilize them to analyze risks 5. Protect data movement, perform disaster recovery, access CSP security and manage client databases Learn more at: https://www.simplilearn.com/cyber-security-expert-master-program-training-course?utm_campaign=SymmetricKeyCryptography&utm_medium=Description&utm_source=Slideshare
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Symmetric Key Cryptography | Stream Cipher & Block Cipher Explained | Network Security | Simplilearn
- 2. What in It for You? 1. What Is Cryptography? 2. Applications of Symmetric Key Cryptography 3. What Is Symmetric Key Cryptography? 4. Private-Key Cryptography 5. Types of encryption 6. Advantages of Symmetric Key Cryptography
- 4. Click here to watch the video
- 5. What Is Cryptography? Cryptography is the science of encrypting and decryption data to prevent unauthorized access. Encryption converts data from plaintext to Ciphertext. Decryption reverses the process of encryption to retrieve the original information. “Study” “G4*F#2” “Study” Plaintext Plaintext Ciphertext Encryption Decryption
- 6. Types of Encryption Encryption In Cryptography Symmetric Key Cryptography Asymmetric Key Cryptography
- 7. Types of Encryption Symmetric Key Cryptography
- 8. Applications of Symmetric Key Cryptography
- 9. Applications of Symmetric Key Cryptography Banking applications to authenticate ID and transactions Server/Data Center information can be encrypted at rest HTTPS encryption with secure all-around browsing
- 10. What Is Symmetric Key Cryptography?
- 11. What Is Symmetric Key Cryptography? Symmetric Key Cryptography relies on a single key for encryption and decryption of information. The key needs to be kept secret and be available with both the sender and receiver. Strength of encryption depends on the key size being used.
- 12. What Is Symmetric Key Cryptography? Paul Jane Secret Key
- 13. What Is Symmetric Key Cryptography? Paul Jane ‘I am ready’ ‘H FI MBIRL’ Ciphertext ‘I am ready’ ‘H FI MBIRL’ Plaintext
- 15. Private – Key Cryptography • Same Key for encryption and decryption means a single point of failure • Key needs to be kept secret at all times • Receiver/Third party can also generate messages with the same key, so authentication issue will arise should the secret key is leaked Secret Key
- 17. Types of Encryption – Stream Ciphers • Encrypt information one bit/byte at time • Quicker format of encryption • Data is converted to binary digits and encrypted sequentially • Popular algorithms – RC4, Salsa20 10010101 Binary Data Encryption Key W^3K0# Ciphertext
- 18. Types of Encryption – Stream Ciphers 1 0 0 1 0 1 0 1 0 1 1 1 0 0 1 0 Binary Data Random Encryption Key Algorithm Function 1 0 1 1 1 0 0 1 W^3K0# Ciphertext f (x)
- 19. Types of Encryption – Block Ciphers • Information broken down to chunks/blocks of fixed size • Size of block depends on key size • The chunks are encrypted and later chained together • Popular algorithms – AES, DES, 3DES Block 1 Block 2 Block 3 Block 4 Block 5 Binary Data 0100100 0 0110010 1 0110110 0 0101110 0 0110111 1
- 20. Types of Encryption – Block Ciphers Encryption Key 10101110 01110101 01001001 10110010 11101001 0100100 0 0110010 1 0110110 0 0101110 0 0110111 1 Each Block Encrypted Block
- 21. Types of Encryption – Block Ciphers W$2M& Ciphertext 10101110 01110101 01001001 10110010 11101001 10101110 01110101 01001001 10110010 1101001
- 22. Advantages of Symmetric Key Cryptography
- 23. Advantages of Symmetric Key Cryptography Faster than Asymmetric Easier to set-up and implement Better Performance Metrics Optimized for bulk amounts of data