Question

Define Encryption in the context of data security.

Hint:

\textbf{Remember:} Encryption = Plaintext → Ciphertext (for security).

Answer 1

Concept: In data security, protecting sensitive information from unauthorized access is essential. Encryption is a key technique used to ensure data privacy and confidentiality. Definition: Encryption is the process of converting readable data (plaintext) into an encoded form (ciphertext) so that only authorized users can access or understand it. Explanation:

Encryption uses mathematical algorithms and keys to transform data.
The encrypted data appears meaningless to anyone without the correct key.
To read the original data, it must be converted back using decryption.
Where Encryption is Used:

Online banking and digital payments
Secure messaging apps
Password protection
Data storage and cloud services
Secure websites (HTTPS)
Types of Encryption:

Symmetric Encryption: Same key for encryption and decryption.
Asymmetric Encryption: Uses public and private keys.
Conclusion: Encryption is a fundamental data security technique that protects sensitive information by converting it into an unreadable format, ensuring that only authorized users can access it.