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 form

DESCRIPTION

       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();

SEE ALSO

       •   CryptX, Crypt::Checksum

       •   <https://en.wikipedia.org/wiki/Cyclic_redundancy_check>

perl v5.26.1                                       2018-01-03                        Crypt::Checksum::CRC32(3pm)