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How do different types of ciphers relate to each other?

Asymmetric ciphers commonly are not used in succession on the same message input, so they are commonly coupled with a symmetric cipher (which is called a "hybrid cryptosystem"). They are ...
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What is an output symbol?

What is an output symbol ? An output symbol is the base "unit" of output of a PRNG. The keystream itself is composed of an integer number of symbols. If the PRNG outputs bits (like an LFSR),...
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