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package Crypt::Stream::Salsa20;
use strict;
use warnings;
our $VERSION = '0.079_007';
use CryptX;
1;
=pod
=head1 NAME
Crypt::Stream::Salsa20 - Stream cipher Salsa20
=head1 SYNOPSIS
use Crypt::Stream::Salsa20;
# encrypt
$key = "1234567890123456";
$iv = "12345678";
$stream = Crypt::Stream::Salsa20->new($key, $iv);
$ct = $stream->crypt("plain message");
# decrypt
$key = "1234567890123456";
$iv = "12345678";
$stream = Crypt::Stream::Salsa20->new($key, $iv);
$pt = $stream->crypt($ct);
=head1 DESCRIPTION
Provides an interface to the Salsa20 stream cipher.
=head1 METHODS
=head2 new
$stream = Crypt::Stream::Salsa20->new($key, $iv);
#or
$stream = Crypt::Stream::Salsa20->new($key, $iv, $counter, $rounds);
# $key .. 32 or 16 bytes
# $iv .. 8 bytes
# $counter .. initial counter value (DEFAULT: 0)
# $rounds .. rounds (DEFAULT: 20)
=head2 crypt
$ciphertext = $stream->crypt($plaintext);
#or
$plaintext = $stream->crypt($ciphertext);
=head2 keystream
$random_key = $stream->keystream($length);
=head2 clone
$stream->clone();
=head1 SEE ALSO
=over
=item * L<Crypt::Stream::ChaCha>, L<Crypt::Stream::RC4>, L<Crypt::Stream::Sober128>, L<Crypt::Stream::Sosemanuk>
=back
=cut
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