| Crypt::Checksum::Adler32(3) | User Contributed Perl Documentation | Crypt::Checksum::Adler32(3) | 
NAME¶
Crypt::Checksum::Adler32 - Compute Adler32 checksum
SYNOPSIS¶
   ### Functional interface:
   use Crypt::Checksum::Adler32 ':all';
   # calculate Adler32 checksum from string/buffer
   $checksum_raw  = adler32_data($data);
   $checksum_hex  = adler32_data_hex($data);
   $checksum_int  = adler32_data_int($data);
   # calculate Adler32 checksum from file
   $checksum_raw  = adler32_file('filename.dat');
   $checksum_hex  = adler32_file_hex('filename.dat');
   $checksum_int  = adler32_file_int('filename.dat');
   # calculate Adler32 checksum from filehandle
   $checksum_raw  = adler32_file(*FILEHANDLE);
   $checksum_hex  = adler32_file_hex(*FILEHANDLE);
   $checksum_int  = adler32_file_int(*FILEHANDLE);
   ### OO interface:
   use Crypt::Checksum::Adler32;
   $d = Crypt::Checksum::Adler32->new;
   $d->add('any data');
   $d->add('another data');
   $d->addfile('filename.dat');
   $d->addfile(*FILEHANDLE);
   $checksum_raw  = $d->digest;     # raw 4 bytes
   $checksum_hex  = $d->hexdigest;  # hexadecimal form
   $checksum_int  = $d->intdigest;  # 32bit unsigned integer
DESCRIPTION¶
Calculating Adler32 checksums.
Updated: v0.057
EXPORT¶
Nothing is exported by default.
You can export selected functions:
use Crypt::Checksum::Adler32 qw(adler32_data adler32_data_hex adler32_data_int adler32_file adler32_file_hex adler32_file_int);
Or all of them at once:
use Crypt::Checksum::Adler32 ':all';
FUNCTIONS¶
adler32_data¶
Returns checksum as raw octects.
 $checksum_raw = adler32_data('data string');
 #or
 $checksum_raw = adler32_data('any data', 'more data', 'even more data');
adler32_data_hex¶
Returns checksum as a hexadecimal string.
 $checksum_hex = adler32_data_hex('data string');
 #or
 $checksum_hex = adler32_data_hex('any data', 'more data', 'even more data');
adler32_data_int¶
Returns checksum as unsigned 32bit integer.
 $checksum_int = adler32_data_int('data string');
 #or
 $checksum_int = adler32_data_int('any data', 'more data', 'even more data');
adler32_file¶
Returns checksum as raw octects.
 $checksum_raw = adler32_file('filename.dat');
 #or
 $checksum_raw = adler32_file(*FILEHANDLE);
adler32_file_hex¶
Returns checksum as a hexadecimal string.
 $checksum_hex = adler32_file_hex('filename.dat');
 #or
 $checksum_hex = adler32_file_hex(*FILEHANDLE);
adler32_file_int¶
Returns checksum as unsigned 32bit integer.
 $checksum_int = adler32_file_int('filename.dat');
 #or
 $checksum_int = adler32_file_int(*FILEHANDLE);
METHODS¶
new¶
Constructor, returns a reference to the checksum object.
$d = Crypt::Checksum::Adler32->new;
clone¶
Creates a copy of the checksum object state and returns a reference to the copy.
$d->clone();
reset¶
Reinitialize the checksum object state and returns a reference to the checksum object.
$d->reset();
add¶
All arguments are appended to the message we calculate checksum for. The return value is the checksum object itself.
 $d->add('any data');
 #or
 $d->add('any data', 'more data', 'even more data');
addfile¶
The content of the file (or filehandle) is appended to the message we calculate checksum for. The return value is the checksum object itself.
 $d->addfile('filename.dat');
 #or
 $d->addfile(*FILEHANDLE);
BEWARE: You have to make sure that the filehandle is in binary mode before you pass it as argument to the addfile() method.
digest¶
Returns the binary checksum (raw bytes).
$result_raw = $d->digest();
hexdigest¶
Returns the checksum encoded as a hexadecimal string.
$result_hex = $d->hexdigest();
intdigest¶
Returns the checksum encoded as unsigned 32bit integer.
$result_int = $d->intdigest();
SEE ALSO¶
| 2025-06-11 | perl v5.42.0 |