1Crypt::Checksum::Adler3U2s(e3r)Contributed Perl DocumentCartyipotn::Checksum::Adler32(3)
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6 Crypt::Checksum::Adler32 - Compute Adler32 checksum
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9 ### Functional interface:
10 use Crypt::Checksum::Adler32 ':all';
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12 # calculate Adler32 checksum from string/buffer
13 $checksum_raw = adler32_data($data);
14 $checksum_hex = adler32_data_hex($data);
15 $checksum_int = adler32_data_int($data);
16 # calculate Adler32 checksum from file
17 $checksum_raw = adler32_file('filename.dat');
18 $checksum_hex = adler32_file_hex('filename.dat');
19 $checksum_int = adler32_file_int('filename.dat');
20 # calculate Adler32 checksum from filehandle
21 $checksum_raw = adler32_file(*FILEHANDLE);
22 $checksum_hex = adler32_file_hex(*FILEHANDLE);
23 $checksum_int = adler32_file_int(*FILEHANDLE);
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25 ### OO interface:
26 use Crypt::Checksum::Adler32;
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28 $d = Crypt::Checksum::Adler32->new;
29 $d->add('any data');
30 $d->add('another data');
31 $d->addfile('filename.dat');
32 $d->addfile(*FILEHANDLE);
33 $checksum_raw = $d->digest; # raw 4 bytes
34 $checksum_hex = $d->hexdigest; # hexadecimal form
35 $checksum_int = $d->intdigest; # 32bit unsigned integer
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38 Calculating Adler32 checksums.
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40 Updated: v0.057
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43 Nothing is exported by default.
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45 You can export selected functions:
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47 use Crypt::Checksum::Adler32 qw(adler32_data adler32_data_hex adler32_data_int adler32_file adler32_file_hex adler32_file_int);
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49 Or all of them at once:
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51 use Crypt::Checksum::Adler32 ':all';
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54 adler32_data
55 Returns checksum as raw octects.
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57 $checksum_raw = adler32_data('data string');
58 #or
59 $checksum_raw = adler32_data('any data', 'more data', 'even more data');
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61 adler32_data_hex
62 Returns checksum as a hexadecimal string.
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64 $checksum_hex = adler32_data_hex('data string');
65 #or
66 $checksum_hex = adler32_data_hex('any data', 'more data', 'even more data');
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68 adler32_data_int
69 Returns checksum as unsigned 32bit integer.
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71 $checksum_int = adler32_data_int('data string');
72 #or
73 $checksum_int = adler32_data_int('any data', 'more data', 'even more data');
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75 adler32_file
76 Returns checksum as raw octects.
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78 $checksum_raw = adler32_file('filename.dat');
79 #or
80 $checksum_raw = adler32_file(*FILEHANDLE);
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82 adler32_file_hex
83 Returns checksum as a hexadecimal string.
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85 $checksum_hex = adler32_file_hex('filename.dat');
86 #or
87 $checksum_hex = adler32_file_hex(*FILEHANDLE);
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89 adler32_file_int
90 Returns checksum as unsigned 32bit integer.
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92 $checksum_int = adler32_file_int('filename.dat');
93 #or
94 $checksum_int = adler32_file_int(*FILEHANDLE);
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97 new
98 Constructor, returns a reference to the checksum object.
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100 $d = Crypt::Checksum::Adler32->new;
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102 clone
103 Creates a copy of the checksum object state and returns a reference to
104 the copy.
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106 $d->clone();
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108 reset
109 Reinitialize the checksum object state and returns a reference to the
110 checksum object.
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112 $d->reset();
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114 add
115 All arguments are appended to the message we calculate checksum for.
116 The return value is the checksum object itself.
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118 $d->add('any data');
119 #or
120 $d->add('any data', 'more data', 'even more data');
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122 addfile
123 The content of the file (or filehandle) is appended to the message we
124 calculate checksum for. The return value is the checksum object
125 itself.
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127 $d->addfile('filename.dat');
128 #or
129 $d->addfile(*FILEHANDLE);
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131 BEWARE: You have to make sure that the filehandle is in binary mode
132 before you pass it as argument to the addfile() method.
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134 digest
135 Returns the binary checksum (raw bytes).
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137 $result_raw = $d->digest();
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139 hexdigest
140 Returns the checksum encoded as a hexadecimal string.
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142 $result_hex = $d->hexdigest();
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144 intdigest
145 Returns the checksum encoded as unsigned 32bit integer.
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147 $result_int = $d->intdigest();
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150 • CryptX
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152 • <https://en.wikipedia.org/wiki/Adler-32>
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156perl v5.38.0 2023-10-04 Crypt::Checksum::Adler32(3)