(Non-)Random Sequences from (Non-)Random Permutations—Analysis of RC4 Stream Cipher

  title={(Non-)Random Sequences from (Non-)Random Permutations—Analysis of RC4 Stream Cipher},
  author={Sourav Sengupta and Subhamoy Maitra and Goutam Paul and Santanu Sarkar},
  journal={Journal of Cryptology},
RC4 has been the most popular stream cipher in the history of symmetric key cryptography. Its internal state contains a permutation over all possible bytes from 0 to 255, and it attempts to generate a pseudo-random sequence of bytes (called keystream) by extracting elements of this permutation. Over the last twenty years, numerous cryptanalytic results on RC4 stream cipher have been published, many of which are based on non-random (biased) events involving the secret key, the state variables… CONTINUE READING
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