Stream cipher; stream algorithm works one bit at a time usually done in Hardware; no memory required; very fast; block cipher; works on blocks of bits; transforms into fixed length blocks; encrypted block by block 64; 128; 256 uses substitution and t

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1. Stream cipher; stream algorithm works one bit at a time usually done in Hardware; no memory required; very fast; block cipher; works on blocks of bits; transforms into fixed length blocks; encrypted block by block 64; 128; 256 uses substitution and t