Digest::CRC - Generic CRC functions

  # Functional style

  use Digest::CRC qw(crc64 crc32 crc16 crcccitt crc crc8);
  $crc = crc64("123456789");
  $crc = crc32("123456789");
  $crc = crc16("123456789");
  $crc = crcccitt("123456789");
  $crc = crc8("123456789");

  $crc = crc($input,$width,$init,$xorout,$refout,$poly,$refin);

  # OO style
  use Digest::CRC;

  $ctx = Digest::CRC->new(type=>"crc16");
  $ctx = Digest::CRC->new(width=>16, init=>0x2345, xorout=>0x0000, 
                          poly=>0x8005, refin=>1, refout=>1, cont=>1);

  $ctx->add($data);
  $ctx->addfile(*FILE);

  $digest = $ctx->digest;
  $digest = $ctx->hexdigest;
  $digest = $ctx->b64digest;

The Digest::CRC module calculates CRC sums of all sorts. It contains wrapper functions with the correct parameters for CRC-CCITT, CRC-16, CRC-32 and CRC-64.

Oliver Maul, oli@42.nu

CRC algorithm code taken from "A PAINLESS GUIDE TO CRC ERROR DETECTION ALGORITHMS".

The author of this package disclaims all copyrights and releases it into the public domain.