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What are the advantages and disadvantages of a stream versus block ciphers?

A flexible technique that executes a key-dependent rearrangement of values that are sequences of a set number of bits is termed a block cipher. It is suitable for usage in a wide variety of jobs across a wide variety of cryptographic protocols. One of these roles is the bulk encryption of long streams of data; in order to accomplish this, the block cipher needs to be utilized in conjunction with a suitable mode of operation, also known as "chaining mode." The traditional mode is called Cipher Block Chaining, while the popular newer mode is called Counter (CTR) mode (Ramkumar, 2014). A stream cipher is a customized algorithm used to encrypt large amounts of data sent in a continuous stream. The concept behind this is that it could develop an algorithm that is more effective if one sacrifices part of the adaptability of the block cipher, that is, something that encrypts data faster.

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