Digest::CRC.3pm

Langue: en

Version: 2007-11-05 (mandriva - 01/05/08)

Section: 3 (Bibliothèques de fonctions)

Sommaire

NAME

Digest::CRC - Generic CRC functions

SYNOPSIS

   # Functional style
 
   use Digest::CRC qw(crc32 crc16 crcccitt crc crc8);
   $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;

DESCRIPTION

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

AUTHOR

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.