NAME¶

Crypt::Stream::Salsa20 - Stream cipher Salsa20

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);

DESCRIPTION¶

Provides an interface to the Salsa20 stream cipher.

METHODS¶

 $stream = Crypt::Stream::Salsa20->new($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)

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

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

 $stream->clone();

SEE ALSO¶

•

Crypt::Stream::ChaCha, Crypt::Stream::RC4, Crypt::Stream::Sober128, Crypt::Stream::Sosemanuk