NAME
Crypt::Checksum::CRC32 - Compute CRC32 checksum
SYNOPSIS
use Crypt::Checksum::CRC32;
$d = Crypt::Checksum::CRC32->new;
$d->add('any data');
$d->addfile('filename.dat');
$d->addfile(*FILEHANDLE);
$checksum_raw = $d->digest; # raw bytes
$checksum_hex = $d->hexdigest; # hexadecimal formDESCRIPTION
Calculating CRC32 checksums (OO interface);
Since: CryptX-0.032
METHODS
new
Constructor, returns a reference to the checksum object.
$d = Crypt::Checksum::CRC32->new;clone
Creates a copy of the checksum object state and returns a reference to the copy.
$d->clone();reset
Reinitialize the checksum object state and returns a reference to the checksum object.
$d->reset();add
All arguments are appended to the message we calculate checksum for. The return value is the checksum object itself.
$d->add('any data');
#or
$d->add('any data', 'more data', 'even more data');addfile
The content of the file (or filehandle) is appended to the message we calculate checksum for. The return value is the checksum object itself.
$d->addfile('filename.dat');
#or
$d->addfile(*FILEHANDLE);BEWARE: You have to make sure that the filehandle is in binary mode before you pass it as argument to the addfile() method.
digest
Returns the binary checksum (raw bytes).
$result_raw = $d->digest();hexdigest
Returns the checksum encoded as a hexadecimal string.
$result_hex = $d->hexdigest();