Which statement describes a characteristics of block ciphers?Select one:Block ciphers result in compressed output.Block ciphers result in output data that is larger than the input data most of the time.Block ciphers encrypt plaintext one bit at a time to form a block.Block ciphers are faster than stream ciphers.
Question
Which statement describes a characteristics of block ciphers?Select one:Block ciphers result in compressed output.Block ciphers result in output data that is larger than the input data most of the time.Block ciphers encrypt plaintext one bit at a time to form a block.Block ciphers are faster than stream ciphers.
Solution
Block ciphers encrypt plaintext in distinct blocks of a fixed size, rather than one bit at a time. So, the correct statement is: Block ciphers encrypt plaintext in distinct blocks of a fixed size. They are commonly used in data encryption standard (DES), advanced encryption standard (AES), and other encryption algorithms. They are not necessarily faster than stream ciphers and do not result in compressed or larger output data.
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