Decoding isn’t the challenge; the challenge is to make a guess whether you’re seeing the output of the PRG or random output. Your “advantage” is
Adv_PRG[Distinguisher] = P(Distinguisher[PRG[seed]] = “PRG”) - P(Distinguisher[True randomness] = “PRG”)
Decoding isn’t the challenge; the challenge is to make a guess whether you’re seeing the output of the PRG or random output. Your “advantage” is
Adv_PRG[Distinguisher] = P(Distinguisher[PRG[seed]] = “PRG”) - P(Distinguisher[True randomness] = “PRG”)