[RC4J" RC4 is a stream cipher standard that was used widely on the Internet. Read the below pseudocode for its initialization phase and cipher bitstream generation phase: // Initialization byte key...

Extracted text: [RC4J" RC4 is a stream cipher standard that was used widely on the Internet. Read the below pseudocode for its initialization phase and cipher bitstream generation phase: // Initialization byte key [N]; // input key of the algorithm (E.g., N = 16) byte K[256] ; // keying material byte s[256]; // internal states for i = 0 to 255 s[i] = i K[i] = key[i (mod N) ] j = 0 for i = 0 to 255 j = () + S[i] + K[i]) mod 256 swap (S[1], s[j]) i = j = 0 // cipher Bitstream Generation i = (i + 1) mod 256 j = () + S[i]) mod 256 swap (S[i], s[j]) t = (S[i] + S[j]) mod 256 cipherstream = s[t] How many bits will be used for encryption finally? Explain the relation of the arrays key and S, which leads to the selection of these bits.