Add module and unit test for hash-mode 7100

2019-01-24 15:25:07 +01:00
parent c67287e754
commit 83229acd6b
4 changed files with 344 additions and 154 deletions
@@ -0,0 +1,65 @@
+#!/usr/bin/env perl
+
+##
+## Author......: See docs/credits.txt
+## License.....: MIT
+##
+
+use strict;
+use warnings;
+
+use Crypt::PBKDF2;
+
+sub module_constraints { [[0, 255], [-1, -1], [0, 55], [-1, -1], [-1, -1]] }
+
+sub module_generate_hash
+{
+  my $word   = shift;
+  my $unused = shift;
+  my $salt   = shift // random_hex_string (64);
+  my $iter   = shift // 1024;
+
+  my $pbkdf2 = Crypt::PBKDF2->new
+  (
+    hasher     => Crypt::PBKDF2->hasher_from_algorithm ('HMACSHA2', 512),
+    iterations => $iter
+  );
+
+  my $hash_buf = unpack ("H*", $pbkdf2->PBKDF2 (pack ("H*", $salt), $word));
+
+  my $tmp_hash = sprintf ("\$ml\$%i\$%s\$%0128s", $iter, $salt, $hash_buf);
+
+  return $tmp_hash;
+}
+
+sub module_verify_hash
+{
+  my $line = shift;
+
+  my $index1 = index ($line, ":");
+
+  return if $index1 < 1;
+
+  my $hash = substr ($line, 0, $index1);
+  my $word = substr ($line, $index1 + 1);
+
+  my $index2 =  index ($hash, "\$", 5);
+
+  return if $index2 < 1;
+
+  my $index3 =  index ($hash, "\$", $index2 + 1);
+
+  my $salt = substr ($hash, $index2 + 1, $index3 - $index2 - 1);
+
+  my $iter = substr ($hash, 4, $index2 - 4);
+
+  return if (int ($iter) < 1);
+
+  my $word_packed = pack_if_HEX_notation ($word);
+
+  my $new_hash = module_generate_hash ($word_packed, undef, $salt, $iter);
+
+  return ($new_hash, $word);
+}
+
+1;