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digest::crc(3) [osx man page]

Digest::CRC(3)						User Contributed Perl Documentation					    Digest::CRC(3)

Digest::CRC - Generic CRC functions SYNOPSIS
# Functional style use Digest::CRC qw(crc64 crc32 crc16 crcccitt crc crc8 crcopenpgparmor); $crc = crc64("123456789"); $crc = crc32("123456789"); $crc = crc16("123456789"); $crc = crcccitt("123456789"); $crc = crc8("123456789"); $crc = crcopenpgparmor("123456789"); $crc = crc($input,$width,$init,$xorout,$refout,$poly,$refin,$cont); # add data to existing $crc = crc32("ABCD", $crc); # OO style use Digest::CRC; $ctx = Digest::CRC->new(type=>"crc16"); $ctx = Digest::CRC->new(width=>16, init=>0x2345, xorout=>0x0000, refout=>1, poly=>0x8005, refin=>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, CRC-32 and CRC-64, as well as the CRC used in OpenPGP's ASCII-armored checksum. SEE ALSO AUTHOR
Oliver Maul, COPYRIGHT
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. perl v5.16.2 2013-08-25 Digest::CRC(3)

Check Out this Related Man Page

CRC32(3)						User Contributed Perl Documentation						  CRC32(3)

String::CRC32 - Perl interface for cyclic redundency check generation SYNOPSIS
use String::CRC32; $crc = crc32("some string"); $crc = crc32("some string", initvalue); $somestring = "some string"; $crc = crc32($somestring); open(SOMEFILE, "location/of/some.file"); $crc = crc32(*SOMEFILE); close(SOMEFILE); DESCRIPTION
The CRC32 module calculates CRC sums of 32 bit lenghts. It generates the same CRC values as ZMODEM, PKZIP, PICCHECK and many others. Despite its name, this module is able to compute the checksum of files as well as strings. EXAMPLES
$crc = crc32("some string"); results in the same as $crc = crc32(" string", crc32("some")); This is useful for subsequent CRC checking of substrings. You may even check files: open(SOMEFILE, "location/of/some.file"); $crc = crc32(*SOMEFILE); close(SOMEFILE); A init value may also been supplied in the above example. AUTHOR
Soenke J. Peters <> Please be so kind as to report any bugs/suggestions to the above address. COPYRIGHT
CRC algorithm code taken from CRC-32 by Craig Bruce. The module stuff is inspired by a similar perl module called String::CRC by David Sharnoff & Matthew Dillon. Horst Fickenscher told me that it could be useful to supply an init value to the crc checking function and so I included this possibility. The author of this package disclaims all copyrights and releases it into the public domain. perl v5.16.3 2005-04-04 CRC32(3)
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