Верны ли утверждения? А) Симметричное шифрование подразделяется на два вида: блочное и поточное. В) Алгоритмы поточного шифрования

                                       A story about a rescue.

     One Wednesday afternoon, I was walking in the garden in the park. It was a beautiful sunny day, ut suddenly, I saw a small aparrow who got confused in the net. He hung down his head, and was so miserable and helpless, that I wanted to help him.

     He was confusing in the net in the branches of the bush. When I released him, I thought he was going to fly away, but he was too small for flying, that I had to take him home. Soon he recovered and flew away.

      A few days later I saw him again near that place where I found him. He was with two adult sparrows - those were his parents.