1Crypt::Checksum::CRC32(U3s)er Contributed Perl DocumentatCiroynpt::Checksum::CRC32(3)
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NAME

6       Crypt::Checksum::CRC32 - Compute CRC32 checksum
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SYNOPSIS

9          use Crypt::Checksum::CRC32;
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11          $d = Crypt::Checksum::CRC32->new;
12          $d->add('any data');
13          $d->addfile('filename.dat');
14          $d->addfile(*FILEHANDLE);
15          $checksum_raw = $d->digest;     # raw bytes
16          $checksum_hex = $d->hexdigest;  # hexadecimal form
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DESCRIPTION

19       Calculating CRC32 checksums (OO interface);
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21       Since: CryptX-0.032
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METHODS

24   new
25       Constructor, returns a reference to the checksum object.
26
27        $d = Crypt::Checksum::CRC32->new;
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29   clone
30       Creates a copy of the checksum object state and returns a reference to
31       the copy.
32
33        $d->clone();
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35   reset
36       Reinitialize the checksum object state and returns a reference to the
37       checksum object.
38
39        $d->reset();
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41   add
42       All arguments are appended to the message we calculate checksum for.
43       The return value is the checksum object itself.
44
45        $d->add('any data');
46        #or
47        $d->add('any data', 'more data', 'even more data');
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49   addfile
50       The content of the file (or filehandle) is appended to the message we
51       calculate checksum for.  The return value is the checksum object
52       itself.
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54        $d->addfile('filename.dat');
55        #or
56        $d->addfile(*FILEHANDLE);
57
58       BEWARE: You have to make sure that the filehandle is in binary mode
59       before you pass it as argument to the addfile() method.
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61   digest
62       Returns the binary checksum (raw bytes).
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64        $result_raw = $d->digest();
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66   hexdigest
67       Returns the checksum encoded as a hexadecimal string.
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69        $result_hex = $d->hexdigest();
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SEE ALSO

72       ·   CryptX, Crypt::Checksum
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74       ·   <https://en.wikipedia.org/wiki/Cyclic_redundancy_check>
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78perl v5.30.1                      2020-01-29         Crypt::Checksum::CRC32(3)
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