(Block ciphers) can be (product ciphers).Logical formLearned from2 sentences. Ciphers may use a structure.Logical formLearned from2 sentences. (Block ciphers) may undergo construction.Logical formLearned from2 sentences. (Stream ciphers) may undergo a failure.Logical formLearned from2 sentences. (Stream ciphers) can be suitable for adoption.Logical formLearned from2 sentences. (Block ciphers) may operate on a string of bits.Logical formLearned from2 sentences. Ciphers may be divided into (stream ciphers).Logical formLearned from2 sentences. (Stream ciphers) can be binary.Logical formLearned from2 sentences. (Feedback shift) may register-base (stream ciphers).Logical formLearned from2 sentences. Attacks can be on (stream ciphers).Logical formLearned from2 sentences. (Stream ciphers) can be susceptible to attacks.Logical formLearned from2 sentences. (Stream ciphers) may execute at a speed.Logical formLearned from2 sentences. (Stream ciphers) may represent an approach to symmetric encryption.Logical formLearned from2 sentences. Attacks may be developed for (block ciphers).Logical formLearned from2 sentences. (Block ciphers) may take a number of bits.Logical formLearned from2 sentences.