Add -m 8100 unit test

tools/test_modules/m08100.pm

@@ -0,0 +1,51 @@
+#!/usr/bin/env perl
+
+##
+## Author......: See docs/credits.txt
+## License.....: MIT
+##
+
+use strict;
+use warnings;
+
+use Digest::SHA qw (sha1_hex);
+
+sub module_constraints { [[0, 255], [8, 8], [0, 54], [8, 8], [8, 54]] }
+
+sub module_generate_hash
+{
+  my $word = shift;
+  my $salt = shift;
+
+  my $hash_buf = sha1_hex ($salt . $word . "\x00");
+
+  my $hash = sprintf ("1%s%s", $salt, $hash_buf);
+
+  return $hash;
+}
+
+sub module_verify_hash
+{
+  my $line = shift;
+
+  my $salt = substr ($line, 1, 8);
+
+  my $rest = substr ($line, 1 + 8);
+
+  my $index2 = index ($rest, ":");
+
+  return if $index2 < 1;
+
+  my $word = substr ($rest, $index2 + 1);
+
+  return unless defined $salt;
+  return unless defined $word;
+
+  $word = pack_if_HEX_notation ($word);
+
+  my $new_hash = module_generate_hash ($word, $salt);
+
+  return ($new_hash, $word);
+}
+
+1;