Suppose Alice encrypted a message using Bob's public key and sent it to Bob. If an attacker was able to intercept Alice-Bob message, which of the following can be compromised:

Question

BlackTom AI · Accepted Answer

When considering encryption with Bob's public key, the core idea is that only Bob, possessing his private key, can decrypt what Alice sent. 
Option 1: Confidentiality. Since the attacker only intercepted the ciphertext and does not have Bob's private key, they should not be able to recover the plaintext. Therefore, confidentiality is not compromised by mere interception under proper public-key encryption.
Option 2: Integrity. Integrity means the message has not been altered in transit. If the attacker tampers with the ciphertext, a secure encryption scheme (like RSA with OAEP or similar padding schemes) typically detects the tampering and decryption fails rather than producing a valid altered plaintext. Without an additional integrity mechanism (e.g., a MAC or digital signature), public-key encryption alone does not guarantee integrity, but interception alone does not guarantee successful tampering that preserves validity. In standard practice, altering ciphertext would either fail to decrypt or yield unusable data, so integrity is not reliably compromised by simple interception.
Option 3: Both confidentiality and integrity. Since confidentiality is not compromised by interception, this option cannot be correct.
Option 4: Neither confidentiality nor integrity can be compromised. Given that interception does not reveal plaintext and standard public-key encryption with proper padding detects tampering, neither confidentiality nor integrity is inherently compromised by the act of simply intercepting the message. This is the most accurate assessment under typical cryptographic assumptions.

Suppose Alice encrypted a message using Bob's public key and sent it to Bob. If an attacker was able to intercept Alice-Bob message, which of the following can be compromised:单项选择题

类似问题

Question at position 14 Which of the following are common problems described in the manual when using GPG during the lab.Encrypting with RSA instead of AESIncorrect network settings in the VMSSH service not runningUsing “su” to switch user instead of proper loginIncorrect IP address of the VM

Public key and private key are used for

Public-key encryption is more secure from cryptanalysis than symmetric encryption.

Asymmetric encryption can be used for __________ .

Unlike RSA, DSA cannot be used for encryption or key exchange.

The most widely used public-key cryptosystem is __________ .

Public-key encryption is more secure from cryptanalysis than symmetric encryption.

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单