add hash mode 20600 (oracle transportation manager)

tools/test_modules/m20600.pm

@@ -0,0 +1,53 @@
+#!/usr/bin/env perl
+
+##
+## Author......: See docs/credits.txt
+## License.....: MIT
+##
+
+use strict;
+use warnings;
+
+use Digest::SHA qw (sha256);
+use MIME::Base64;
+
+sub module_constraints { [[0, 256], [0, 256], [0, 55], [0, 55], [0, 55]] }
+
+sub module_generate_hash
+{
+  my ($word, $salt, $iter) = @_;
+
+  return unless defined $word;
+  return unless defined $salt;
+
+  $iter //= 1000;
+
+  my $digest = sha256($salt.$word);
+
+  for (my $i = 1; $i < $iter; $i++) {
+    $digest = sha256($digest);
+  }
+
+  chomp($digest = encode_base64($digest));
+
+  my $hash = sprintf ("otm_sha256:%d:%s:%s", $iter, $salt, $digest);
+
+  return $hash;
+}
+
+sub module_verify_hash
+{
+  my $line = shift;
+
+  my ($sig, $iter, $salt, $hash, $word) = split (':', $line);
+
+  return unless defined $iter;
+  return unless defined $salt;
+  return unless defined $word;
+ 
+  my $new_hash = module_generate_hash ($word, $salt, $iter);
+
+  return ($new_hash, $word);
+}
+
+1;