Payment Systems Security

  1. Cryptographic Controls and Data Protection
    1. Cryptographic Fundamentals
      1. Symmetric Encryption
        1. Advanced Encryption Standard
          1. Key Sizes and Security Levels
            1. Block Cipher Modes
              1. Triple Data Encryption Standard
                1. Legacy System Considerations
                2. Asymmetric Encryption
                  1. RSA Algorithm
                    1. Key Generation and Management
                      1. Digital Certificate Systems
                        1. Elliptic Curve Cryptography
                          1. Performance Advantages
                            1. Mobile Payment Applications
                            2. Cryptographic Hash Functions
                              1. Secure Hash Algorithm Family
                                1. SHA-1 Deprecation
                                  1. SHA-2 Implementation
                                    1. SHA-3 Adoption
                                      1. Message Authentication Codes
                                        1. HMAC Implementation
                                          1. Keyed Hash Functions
                                          2. Digital Signature Systems
                                            1. Signature Generation Process
                                              1. Signature Verification Process
                                                1. Certificate Authority Infrastructure
                                                  1. Payment Authorization Applications
                                                2. Data Protection in Transit
                                                  1. Transport Layer Security
                                                    1. TLS Protocol Versions
                                                      1. Cipher Suite Selection
                                                        1. Certificate Management
                                                          1. Perfect Forward Secrecy
                                                          2. End-to-End Encryption
                                                            1. E2EE Architecture
                                                              1. Payment Terminal Implementation
                                                                1. Key Management Requirements
                                                                  1. Performance Considerations
                                                                  2. Point-to-Point Encryption
                                                                    1. P2PE Components and Architecture
                                                                      1. PCI P2PE Standard Requirements
                                                                        1. Implementation Models
                                                                          1. Validation and Certification
                                                                        2. Data Protection at Rest
                                                                          1. Database Encryption
                                                                            1. Transparent Data Encryption
                                                                              1. Column-Level Encryption
                                                                                1. Application-Level Encryption
                                                                                  1. Key Management Integration
                                                                                  2. File System Encryption
                                                                                    1. Encrypted File Systems
                                                                                      1. File-Level Encryption Tools
                                                                                        1. Access Control Integration
                                                                                          1. Performance Impact
                                                                                          2. Full Disk Encryption
                                                                                            1. Disk Encryption Technologies
                                                                                              1. Boot Process Security
                                                                                                1. Key Escrow and Recovery
                                                                                                  1. Mobile Device Encryption
                                                                                                2. Cryptographic Key Management
                                                                                                  1. Key Lifecycle Management
                                                                                                    1. Key Generation Requirements
                                                                                                      1. Random Number Generation
                                                                                                        1. Key Distribution Methods
                                                                                                          1. Secure Key Exchange Protocols
                                                                                                          2. Key Storage and Protection
                                                                                                            1. Hardware Security Modules
                                                                                                              1. HSM Architecture and Functions
                                                                                                                1. Cloud HSM Services
                                                                                                                  1. Software-Based Key Storage
                                                                                                                    1. Key Wrapping Techniques
                                                                                                                    2. Key Rotation and Destruction
                                                                                                                      1. Rotation Policies and Procedures
                                                                                                                        1. Automated Key Rotation
                                                                                                                          1. Secure Key Deletion
                                                                                                                            1. Key Archival Requirements
                                                                                                                          2. Tokenization Systems
                                                                                                                            1. Tokenization Architecture
                                                                                                                              1. Token Generation Methods
                                                                                                                                1. Token Format Preservation
                                                                                                                                  1. Token Mapping Systems
                                                                                                                                    1. Detokenization Processes
                                                                                                                                    2. Implementation Models
                                                                                                                                      1. Vaulted Tokenization
                                                                                                                                        1. Vault Architecture and Security
                                                                                                                                          1. Vaultless Tokenization
                                                                                                                                            1. Format-Preserving Encryption
                                                                                                                                            2. Tokenization vs Encryption
                                                                                                                                              1. Use Case Comparison
                                                                                                                                                1. Security Trade-offs
                                                                                                                                                  1. Compliance Considerations
                                                                                                                                                    1. Performance Implications
                                                                                                                                                  2. Data Masking and Obfuscation
                                                                                                                                                    1. Static Data Masking
                                                                                                                                                      1. Masking Techniques
                                                                                                                                                        1. Data Consistency Requirements
                                                                                                                                                          1. Test Data Generation
                                                                                                                                                          2. Dynamic Data Masking
                                                                                                                                                            1. Real-Time Masking
                                                                                                                                                              1. Policy-Based Masking
                                                                                                                                                                1. Application Integration
                                                                                                                                                                2. Development Environment Security
                                                                                                                                                                  1. Test Data Management
                                                                                                                                                                    1. Production Data Sanitization
                                                                                                                                                                      1. Developer Access Controls

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                                                                                                                                                                  2. Core Security Principles

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                                                                                                                                                                  4. Payment System Component Security