# Crypt::Stream::RC4 - phpMan

## NAME
    [Crypt::Stream::RC4] - Stream cipher RC4

## SYNOPSIS
       use [Crypt::Stream::RC4];

       # encrypt
       $key = "1234567890123456";
       $stream = [Crypt::Stream::RC4]->new($key);
       $ct = $stream->crypt("plain message");

       # decrypt
       $key = "1234567890123456";
       $stream = [Crypt::Stream::RC4]->new($key);
       $pt = $stream->crypt($ct);

## DESCRIPTION
    Provides an interface to the RC4 stream cipher.

## METHODS
  new
     $stream = [Crypt::Stream::RC4]->new($key);
     # $key .. length 5-256 bytes (40 - 2048 bits)

  crypt
     $ciphertext = $stream->crypt($plaintext);
     #or
     $plaintext = $stream->crypt($ciphertext);

  keystream
     $random_key = $stream->keystream($length);

  clone
     $stream->clone();

## SEE ALSO
    *   [Crypt::Stream::ChaCha], [Crypt::Stream::Sober128],
        [Crypt::Stream::Salsa20], [Crypt::Stream::Sosemanuk]

    *   <<https://en.wikipedia.org/wiki/RC4_cipher>>