23. A type cryptographic attack where it is based on the probability of two different messages using the same hash function to produce the same message digest is?

Вариант ответа 1 - A. Birthday attack

Вариант ответа 2 - B. Statistic attack

Вариант ответа 3 - C. Differential cryptanalysis attack

Вариант ответа 4 - D. Known ciphertext attack