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.IX Title "Crypt::Stream::RC4 3"
.TH Crypt::Stream::RC4 3 2024-10-20 "perl v5.40.0" "User Contributed Perl Documentation"
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.SH NAME
Crypt::Stream::RC4 \- Stream cipher RC4
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 1
\&   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);
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
Provides an interface to the RC4 stream cipher.
.SH METHODS
.IX Header "METHODS"
.SS new
.IX Subsection "new"
.Vb 2
\& $stream = Crypt::Stream::RC4\->new($key);
\& # $key .. length 5\-256 bytes (40 \- 2048 bits)
.Ve
.SS crypt
.IX Subsection "crypt"
.Vb 3
\& $ciphertext = $stream\->crypt($plaintext);
\& #or
\& $plaintext = $stream\->crypt($ciphertext);
.Ve
.SS keystream
.IX Subsection "keystream"
.Vb 1
\& $random_key = $stream\->keystream($length);
.Ve
.SS clone
.IX Subsection "clone"
.Vb 1
\& $stream\->clone();
.Ve
.SH "SEE ALSO"
.IX Header "SEE ALSO"
.IP \(bu 4
Crypt::Stream::ChaCha, Crypt::Stream::Sober128, Crypt::Stream::Salsa20, Crypt::Stream::Sosemanuk
.IP \(bu 4
<https://en.wikipedia.org/wiki/RC4_cipher>