NAME

Digest::CRC - Generic CRC functions

SYNOPSIS

# Functional styleuse 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", $crc);# OO styleuse Digest::CRC;$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

TheDigest::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

https://tools.ietf.org/html/rfc4880#section-6

AUTHOR

Oliver Maul, oli@42.nu

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.