Encryption in information security ppt slideshare.pptx
- 1. Encryption in Cyber Security Vital component for protecting digital information against cyberattacks and data breaches
- 2. What is Encryption? Plain Text Original, readable data Cipher Text Encrypted, unreadable data Encryption Key Value used to encrypt plain text Decryption Key Value used to decrypt cipher text
- 3. How Encryption Works 1 Algorithm Selection Choose mathematical procedure to change data 2 Key Generation Create unique encryption and decryption keys 3 Data Transformation Apply algorithm and key to convert plain text 4 Secure Transmission Send encrypted data over networks
- 4. Types of Encryption Symmetric Encryption Same key for encryption and decryption • Faster processing • Efficient for large data • Key exchange challenge Asymmetric Encryption Public key for encryption, private for decryption • More secure key exchange • Slower for large volumes • Complex key management
- 5. Symmetric Encryption Algorithms AES Advanced Encryption Standard, widely used and secure DES Data Encryption Standard, older and less secure 3DES Triple DES, applies algorithm three times
- 6. Asymmetric Encryption Algorithms RSA Rivest-Shamir-Adleman, common for secure data transmission ECC Elliptic Curve Cryptography, shorter keys than RSA DSA Digital Signature Algorithm, used for signatures
- 7. Data at Rest Encryption 1 Hard Drives Encrypt stored data on physical devices 2 Databases Protect sensitive information in data repositories 3 Cloud Storage Secure data stored in remote servers
- 8. Data in Transit Encryption Sender Encrypts data before transmission Network Encrypted data travels securely Receiver Decrypts received data
- 9. End-to-End Encryption 1 Sender Encryption Message encrypted on sender's device 2 Secure Transmission Encrypted message sent over network 3 Receiver Decryption Message decrypted only on receiver's device
- 10. Digital Signatures Authenticity Verify sender's identity Integrity Ensure message hasn't been altered Non-repudiation Sender can't deny sending message
- 11. Virtual Private Networks (VPNs) User Device Connects to VPN server Encrypted Tunnel Secure data transmission Internet Access with enhanced privacy
- 12. Key Management Challenges 1 Generation Creating strong, unique keys 2 Storage Securely storing keys 3 Distribution Safely sharing keys with authorized parties 4 Rotation Regularly updating keys to maintain security
- 13. Performance Overhead Latency Encryption/decryption processes can introduce delays Resource Consumption Computational resources required for encryption operations
- 14. Compliance and Legal Issues GDPR European Union data protection regulation HIPAA US healthcare data privacy law Regional Laws Varying encryption regulations across jurisdictions
- 15. Best Practices: Strong Algorithms Algorithm Key Length Security Level AES 256-bit Very High RSA 2048-bit High ECC 256-bit High
- 16. Best Practices: Key Management 1 Secure Generation Use reliable random number generators 2 Protected Storage Employ hardware security modules (HSMs) 3 Controlled Distribution Implement secure key exchange protocols 4 Regular Rotation Change keys periodically to enhance security
- 17. Best Practices: Data Protection At Rest Encrypt all sensitive stored data In Transit Use secure protocols for data transmission In Use Implement secure computation techniques
- 18. Best Practices: System Updates 1 Regular Patching Apply security updates promptly 2 Version Control Maintain current encryption software versions 3 Vulnerability Scanning Regularly check for security weaknesses
- 19. Public Key Infrastructure (PKI) 1 Digital Certificates Bind public keys to entities' identities 2 Certificate Authority (CA) Issues and manages digital certificates 3 Registration Authority (RA) Verifies user identity for CA 4 Certificate Repository Stores and distributes certificates
- 20. PKI Applications Secure Email S/MIME for email encryption and signatures Web Security SSL/TLS for secure browsing Access Control Certificate-based authentication for systems Code Signing Verify software authenticity and integrity
- 21. Future of Encryption Quantum Encryption Developing quantum-resistant algorithms AI Integration Enhancing encryption with artificial intelligence Blockchain Exploring decentralized encryption solutions