Final answer:
Cryptography solves real-world problems by providing data security, privacy preservation, and authentication and integrity of data.
Step-by-step explanation:
Cryptography is a crucial field that solves various real-world problems in today's digital age. Here are three examples:
- Data Security: Cryptography helps protect sensitive information during transmission and storage. For example, it ensures that credit card details transmitted during online transactions remain encrypted and cannot be accessed by unauthorized parties.
- Privacy Preservation: Cryptography plays a vital role in preserving privacy, especially in the context of communication. End-to-end encryption protocols like HTTPS and Signal secure communications by encrypting messages, preventing them from being intercepted and read by anyone other than the intended recipient.
- Authentication and Integrity: Cryptographic mechanisms, such as digital signatures, ensure the authenticity and integrity of data. This is particularly important in areas such as electronic voting systems, where it's crucial to verify the validity of votes and prevent tampering.
Cryptography's applications extend beyond these three examples, but they provide a glimpse into the vital role it plays in addressing real-world problems.