In Cryptography, we looked at both stream and block cyphers. We also spoke about substitution cyphers and transposition cyphers as instances of these cyphers. What sort of encryption will arise if we combine a stream cypher with a block cypher (by utilising the stream ciphertext as the plaintext in the block cypher)? Is it going to be a block or stream cypher? 2. What kind of encryption will be produced if we reverse the order, putting the block cypher before the stream cypher? Is it going to be a block or stream cypher?
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