Information Security Module
Information Security Module
Summary of Information Security Module
Introduction to Information Security
In the field of Information Security, there are two main types of attacks: Active Attacks, where the attacker changes the content of a message, and Passive Attacks, where the attacker observes or copies the message. Different types of attacks include Interruption, Interception, Modification, and Fabrication. Security services such as Authentication, Confidentiality, Integrity, Access Control, and Non Repudiation play a crucial role in enhancing the security of data processing systems. Various security mechanisms like Digital Signature, Access Control, and Traffic Padding are used to protect data. Classical encryption techniques involve cryptography and cryptanalysis, ensuring that data remains secure and only accessible to authorized users.
Types of Cryptography
Cryptography involves encryption and decryption processes performed by the sender and receiver respectively. There are two main types of cryptography: Classical and Quantum. Classical cryptography relies on mathematics and computational difficulty, while Quantum cryptography is based on physics and quantum mechanics. Techniques in classical cryptography include Symmetric and Asymmetric encryption, whereas Quantum cryptography utilizes principles like the Heisenberg Uncertainty Principle and Photon Polarization Principle. Various substitution techniques like Caesar Cipher, Playfair Cipher, Monoalphabetic Cipher, and Polyalphabetic Cipher are employed to secure data. Transportation techniques such as Rail Fence and Row Transposition Technique rearrange the order of characters in messages to ensure confidentiality.
Conclusion
Information Security is a critical aspect of modern organizations, ensuring that data remains secure and only accessible to authorized individuals. By understanding the different types of attacks, security services, and cryptography techniques, organizations can enhance their data protection measures and prevent unauthorized access or tampering. Implementation of security mechanisms like Digital Signature and Access Control, along with encryption techniques, plays a vital role in safeguarding sensitive information from potential threats.
