Exam 312-50v12 topic 1 question 164 discussion

is this actual question on the exam or everything after each : is something added by AI? So, maybe the actual question is: You are the lead cybersecurity analyst at a multinational corporation that uses a hybrid encryption system to secure inter-departmental communications. The system uses RSA encryption for key exchange and AES for data encryption, taking advantage of the strengths of both asymmetric and symmetric encryption. Each RSA key pair has a size of 'n' bits, with larger keys providing more security at the cost of slower performance. The time complexity of generating an RSA key pair is O(n^2), and AES encryption has a time complexity of O(n). An attacker has developed a quantum algorithm with time complexity O((log n)^2) to crack RSA encryption. Given 'n=4000' and variable 'AES key size', which scenario is likely to provide the best balance of security and performance? A. AES key size=128 bits B. AES key size=256 bits C. AES key size=192 bits D. AES key size=512 bits

Keyword "best balance of security and performance" AES key size=192 bits, is the one with "balance" in the answer.

B. Only AES 256 is quantum resistant. AES-512 does not exist.

AES512, it seems it does not exist in an industrial.

Considering the goal of achieving a balance between security and performance, option B (AES key size=256 bits) is likely the most reasonable choice. It provides a high level of security while acknowledging that RSA key generation may be slower but is more practical than extremely large AES key sizes for general use.

Considering the balance of security and performance, option C (AES key size=192 bits) seems to be a reasonable choice. It offers a compromise between the higher security of a 256-bit key and the faster performance of a 128-bit key, making it suitable for many practical scenarios.

Could someone help me confirm the accuracy of this data

I think it is C, but I am not sure C. AES key size=192 bits: This configuration is a balance between options A and B, providing moderate security and performance. (AES 512 does not exist) https://www.techtarget.com/searchsecurity/definition/Advanced-Encryption-Standard How AES encryption works: AES includes three block ciphers: AES-128 uses a 128-bit key length to encrypt and decrypt a block of messages. AES-192 uses a 192-bit key length to encrypt and decrypt a block of messages. AES-256 uses a 256-bit key length to encrypt and decrypt a block of messages. Each cipher encrypts and decrypts data in blocks of 128 bits using cryptographic keys of 128, 192 and 256 bits, respectively.