About Me
CompTIA Security+
1 Threats, Attacks, and Vulnerabilities
1-1 Types of Threats
1-2 Types of Attacks
1-3 Vulnerabilities
1-4 Threat Actors and Motives
1-5 Threat Intelligence
1-6 Incident Response
1-7 Penetration Testing
1-8 Vulnerability Scanning
1-9 Threat Modeling
1-10 Security Controls
2 Technologies and Tools
2-1 Firewalls
2-2 Intrusion Detection Systems (IDS)
2-3 Intrusion Prevention Systems (IPS)
2-4 Security Information and Event Management (SIEM)
2-5 Data Loss Prevention (DLP)
2-6 Security Orchestration, Automation, and Response (SOAR)
2-7 Endpoint Security
2-8 Network Security
2-9 Cloud Security
2-10 Mobile Device Security
2-11 Secure Coding Practices
2-12 Cryptography
2-13 Public Key Infrastructure (PKI)
2-14 Certificate Management
2-15 Security Tools and Utilities
3 Architecture and Design
3-1 Security Models
3-2 Security Controls
3-3 Secure Network Design
3-4 Secure Systems Design
3-5 Secure Application Design
3-6 Secure Cloud Architecture
3-7 Secure Mobile Architecture
3-8 Secure IoT Architecture
3-9 Secure Data Storage
3-10 Secure Backup and Recovery
3-11 Security in DevOps
3-12 Security in Agile Development
3-13 Security in Continuous IntegrationContinuous Deployment (CICD)
3-14 Security in Configuration Management
3-15 Security in Identity and Access Management (IAM)
4 Identity and Access Management
4-1 Authentication Methods
4-2 Authorization Mechanisms
4-3 Identity and Access Management (IAM) Concepts
4-4 Single Sign-On (SSO)
4-5 Multi-Factor Authentication (MFA)
4-6 Federation
4-7 Role-Based Access Control (RBAC)
4-8 Attribute-Based Access Control (ABAC)
4-9 Identity as a Service (IDaaS)
4-10 Identity Lifecycle Management
4-11 Access Reviews and Audits
4-12 Privileged Access Management (PAM)
4-13 Identity Federation
4-14 Identity Provisioning and Deprovisioning
5 Risk Management
5-1 Risk Management Concepts
5-2 Risk Assessment
5-3 Risk Mitigation Strategies
5-4 Business Impact Analysis (BIA)
5-5 Risk Register
5-6 Risk Treatment
5-7 Risk Monitoring and Reporting
5-8 Risk Appetite and Tolerance
5-9 Risk Communication
5-10 Risk Transfer
5-11 Risk Acceptance
5-12 Risk Avoidance
5-13 Risk Reduction
5-14 Risk in Cloud Environments
5-15 Risk in Mobile Environments
5-16 Risk in IoT Environments
6 Cryptography and PKI
6-1 Cryptographic Concepts
6-2 Symmetric Encryption
6-3 Asymmetric Encryption
6-4 Hashing
6-5 Digital Signatures
6-6 Public Key Infrastructure (PKI)
6-7 Certificate Management
6-8 Certificate Authorities (CAs)
6-9 Certificate Revocation
6-10 Key Management
6-11 Cryptographic Protocols
6-12 Cryptographic Attacks
6-13 Quantum Cryptography
6-14 Post-Quantum Cryptography
6-15 Cryptographic Use Cases
7 Security Operations
7-1 Security Operations Concepts
7-2 Security Policies and Procedures
7-3 Security Awareness and Training
7-4 Security Monitoring and Logging
7-5 Incident Response
7-6 Forensics
7-7 Disaster Recovery
7-8 Business Continuity
7-9 Physical Security
7-10 Personnel Security
7-11 Supply Chain Security
7-12 Third-Party Risk Management
7-13 Security Audits and Assessments
7-14 Compliance and Regulatory Requirements
7-15 Security Metrics and Reporting
7-16 Security Operations Center (SOC)
7-17 Security Orchestration, Automation, and Response (SOAR)
7-18 Security in DevOps
7-19 Security in Agile Development
7-20 Security in Continuous IntegrationContinuous Deployment (CICD)
6.1 Cryptographic Concepts Explained

6.1 Cryptographic Concepts Explained

Key Concepts

Cryptographic Concepts are fundamental principles used to secure data and communications. Key concepts include Encryption, Decryption, Symmetric Encryption, Asymmetric Encryption, Hashing, and Digital Signatures.

Encryption

Encryption is the process of converting plaintext into ciphertext using an algorithm and a key. This ensures that the data is unreadable to unauthorized parties.

Example: When you send a password over the internet, it is encrypted using a symmetric or asymmetric encryption algorithm, making it secure from eavesdroppers.

Decryption

Decryption is the reverse process of encryption, where ciphertext is converted back into plaintext using the appropriate key and algorithm.

Example: After receiving an encrypted message, the recipient uses the decryption key to convert the ciphertext back into the original message.

Symmetric Encryption

Symmetric Encryption uses the same key for both encryption and decryption. It is faster and more efficient but requires secure key distribution.

Example: The Advanced Encryption Standard (AES) is a widely used symmetric encryption algorithm that ensures data confidentiality.

Asymmetric Encryption

Asymmetric Encryption uses a pair of keys: a public key for encryption and a private key for decryption. It provides better security but is slower than symmetric encryption.

Example: The RSA algorithm is commonly used for asymmetric encryption, ensuring secure communication over the internet.

Hashing

Hashing is the process of converting data into a fixed-size string of bytes using a hash function. Hash functions are one-way and produce unique outputs for different inputs.

Example: The SHA-256 algorithm is used to hash passwords, ensuring that even if the hash is compromised, the original password remains secure.

Digital Signatures

Digital Signatures use asymmetric encryption to verify the authenticity and integrity of a message or document. They ensure that the data has not been altered and comes from a trusted source.

Example: When a software vendor digitally signs their software, users can verify that the software has not been tampered with and is from the legitimate vendor.

Conclusion

Understanding Cryptographic Concepts is essential for securing data and communications. By mastering Encryption, Decryption, Symmetric and Asymmetric Encryption, Hashing, and Digital Signatures, you can ensure the confidentiality, integrity, and authenticity of your data.

© 2024 Ahmed Baheeg Khorshid. All rights reserved.