QuestionJune 5, 2025

7. Explain how encryption works and how asymmetric encryption is used for purchasing items online securely. (5 points)

7. Explain how encryption works and how asymmetric encryption is used for purchasing items online securely. (5 points)
7. Explain how encryption works and how asymmetric encryption is used for
purchasing items online securely. (5 points)

Solution
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Answer

Asymmetric encryption secures online purchases by encrypting sensitive data with a public key, which only the intended recipient can decrypt with their private key. Explanation 1. Define Encryption Encryption is the process of converting plaintext into ciphertext using an algorithm and a key, making it unreadable to unauthorized users. 2. Explain Asymmetric Encryption Asymmetric encryption uses two keys: a public key for encryption and a private key for decryption. The public key is shared openly, while the private key is kept secret. 3. Application in Online Purchases When purchasing online, the buyer's sensitive information (e.g., credit card details) is encrypted with the seller's public key. Only the seller can decrypt this data using their private key, ensuring secure transactions.

Explanation

1. Define Encryption<br /> Encryption is the process of converting plaintext into ciphertext using an algorithm and a key, making it unreadable to unauthorized users.<br /><br />2. Explain Asymmetric Encryption<br /> Asymmetric encryption uses two keys: a public key for encryption and a private key for decryption. The public key is shared openly, while the private key is kept secret.<br /><br />3. Application in Online Purchases<br /> When purchasing online, the buyer's sensitive information (e.g., credit card details) is encrypted with the seller's public key. Only the seller can decrypt this data using their private key, ensuring secure transactions.
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