Calculate MD5 Hash of File (or SHA-1, and other hash algorithms)

Demonstrates how to calculate a hash for a file's contents.

 Chilkat Perl Module Downloads for Windows, Linux, and MAC OS X

use chilkat();

$crypt = new chilkat::CkCrypt2();

$success = $crypt->UnlockComponent("Anything for 30-day trial");
if ($success != 1) {
    print $crypt->lastErrorText() . "\r\n";
    exit;
}

#  Set the name of the hash algorithm.
#  Other choices include "sha1", "sha384", "sha512", "md2", "md5", and "haval".
$crypt->put_HashAlgorithm("md5");

#  EncodingMode specifies the encoding of the hash output.
#  It may be "hex", "url", "base64", or "quoted-printable".
$crypt->put_EncodingMode("hex");

#  Files of any type may be hashed -- it doesn't matter
#  if the file is binary or text...

$hashStr = $crypt->hashFileENC("/temp/something.dat");
if ($hashStr eq null ) {
    print $crypt->lastErrorText() . "\r\n";
    exit;
}

print $hashStr . "\r\n";