(Choose 2 answers)
Suppose a small, low-power device experiences that a real-time computation of the encryption/decryption function is burdensome (e.g., serving as the bottleneck of the performance) and wants to compute the encryption/decryption functions offline (e.g., computed before the plaintext/ciphertext). Which of the following block cipher operation modes support such feature?
A. CBC
B. CTR
C. CFB
D. OFB
Exi Q: 26
