Question

Cryptography is used for ______.

• A. Privacy
• B. Safety
• C. Copyright purpose
• D. All of these

Answer 1

Answer:

D. All of these

• Cryptography is a comprehensive field that serves multiple important purposes in information security and digital communications. Let me explain why "All of these" is the correct answer:

• Privacy: Cryptography ensures that sensitive information remains confidential by converting readable data into an unreadable format that can only be deciphered by authorized parties with the correct decryption key. This protects personal data, financial information, and confidential communications from unauthorized access.

• Safety: Cryptographic techniques provide data integrity and authentication, ensuring that information hasn't been tampered with during transmission or storage. Digital signatures and hash functions help verify the authenticity of messages and protect against malicious modifications.

• Copyright Purpose: Cryptography plays a crucial role in digital rights management (DRM) systems, protecting intellectual property and copyrighted content. It helps prevent unauthorized copying, distribution, and piracy of digital media, software, and other protected materials.

• Since cryptography serves all these purposes - maintaining privacy, ensuring safety, and protecting copyrighted materials - Option D "All of these" is the most comprehensive and accurate answer. Cryptography is not limited to just one application but is a versatile tool used across multiple domains of information security.