Crypt::Stream::Salsa20 - Stream cipher Salsa20

NAME SYNOPSIS DESCRIPTION METHODS new crypt keystream clone SEE ALSO

NAME

Crypt::Stream::Salsa20 − Stream cipher Salsa20

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);

DESCRIPTION

Provides an interface to the Salsa20 stream cipher.

METHODS

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)

crypt

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

keystream

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

clone

$stream−>clone();