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my @message = unpack "C*", substr($message, $piece * $MAX_CHUNK_SI +ZE, $MAX_CHUNK_SIZE);
RC4(36A756FC8BA497CA34532CA4A1086AD0, 637573746F6D65726E616D6528BF4E5E +4E758A4164004E56FFFA01082E2E00B6)