Add -m 8900 unit test

tools/test_modules/m08900.pm

@@ -0,0 +1,91 @@
+#!/usr/bin/env perl
+
+##
+## Author......: See docs/credits.txt
+## License.....: MIT
+##
+
+use strict;
+use warnings;
+
+use Crypt::ScryptKDF qw (scrypt_hash);
+use MIME::Base64 qw (decode_base64);
+
+sub module_constraints { [[0, 255], [1, 15], [-1, -1], [-1, -1], [-1, -1]] }
+
+sub module_generate_hash
+{
+  my $word = shift;
+  my $salt = shift;
+  my $N    = shift // 1024;
+  my $r    = shift // 1;
+  my $p    = shift // 1;
+
+  my $hash_buf = scrypt_hash ($word, $salt, $N, $r, $p, 32);
+
+  my $hash = sprintf ('%s', $hash_buf);
+
+  return $hash;
+}
+
+sub module_verify_hash
+{
+  my $line = shift;
+
+  # scrypt
+  next unless (substr ($line, 0, 7) eq 'SCRYPT:');
+
+  # get hash
+  my $index1 = index ($line, ":", 7);
+
+  return if $index1 < 1;
+
+  # N
+  my $N = substr ($line, 7, $index1 - 7);
+
+  my $index2 = index ($line, ":", $index1 + 1);
+
+  return if $index2 < 1;
+
+  # r
+  my $r = substr ($line, $index1 + 1, $index2 - $index1 - 1);
+
+  $index1 = index ($line, ":", $index2 + 1);
+
+  return if $index1 < 1;
+
+  # p
+  my $p = substr ($line, $index2 + 1, $index1 - $index2 - 1);
+
+  $index2 = index ($line, ":", $index1 + 1);
+
+  return if $index2 < 1;
+
+  # salt
+  my $salt = substr ($line, $index1 + 1, $index2 - $index1 - 1);
+
+  $salt = decode_base64 ($salt);
+
+  $index1 = index ($line, ":", $index2 + 1);
+
+  return if $index1 < 1;
+
+  # digest
+
+  my $word = substr ($line, $index1 + 1);
+
+  return unless defined $salt;
+  return unless defined $word;
+  return unless defined $N;
+  return unless defined $r;
+  return unless defined $p;
+
+  $word = pack_if_HEX_notation ($word);
+
+  my $new_hash = module_generate_hash ($word, $salt, $N, $r, $p);
+
+  return ($new_hash, $word);
+}
+
+1;
+