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51 lines
945 B
Perl
51 lines
945 B
Perl
#!/usr/bin/env perl
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##
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## Author......: See docs/credits.txt
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## License.....: MIT
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##
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use strict;
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use warnings;
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sub module_constraints { [[0, 256], [0, 256], [0, 55], [0, 55], [-1, -1]] }
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sub module_generate_hash
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{
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my $word = shift;
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# PyGOST outputs digests in little-endian order, while the kernels
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# expect them in big-endian; hence the digest[::-1] mirroring.
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my $python_code = <<"END_CODE";
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import binascii
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import sys
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from pygost import gost34112012256
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digest = gost34112012256.new (b"$word").digest ()
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print (binascii.hexlify (digest[::-1]).decode (), end = "")
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END_CODE
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my $hash = `python -c '$python_code'`;
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return $hash;
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}
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sub module_verify_hash
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{
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my $line = shift;
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my ($hash, $word) = split (':', $line);
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return unless defined $hash;
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return unless defined $word;
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my $word_packed = pack_if_HEX_notation ($word);
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my $new_hash = module_generate_hash ($word_packed);
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return ($new_hash, $word);
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}
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1;
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