diff --git a/tools/test_modules/m00050.pm b/tools/test_modules/m00050.pm
index abae749c5..0241ba51a 100644
--- a/tools/test_modules/m00050.pm
+++ b/tools/test_modules/m00050.pm
@@ -9,7 +9,7 @@ use strict;
 use warnings;
 
 use Digest::MD5  qw (md5);
-use Digest::HMAC qw (hmac hmac_hex);
+use Digest::HMAC qw (hmac_hex);
 
 sub module_constraints { [[0, 256], [0, 256], [0, 55], [0, 55], [-1, -1]] }
 
diff --git a/tools/test_modules/m00060.pm b/tools/test_modules/m00060.pm
index c9c15ed40..3deaaa8f2 100644
--- a/tools/test_modules/m00060.pm
+++ b/tools/test_modules/m00060.pm
@@ -9,7 +9,7 @@ use strict;
 use warnings;
 
 use Digest::MD5  qw (md5);
-use Digest::HMAC qw (hmac hmac_hex);
+use Digest::HMAC qw (hmac_hex);
 
 sub module_constraints { [[0, 256], [0, 256], [0, 55], [0, 55], [-1, -1]] }
 
diff --git a/tools/test_modules/m00150.pm b/tools/test_modules/m00150.pm
index 87186eea2..b3c68c8f1 100644
--- a/tools/test_modules/m00150.pm
+++ b/tools/test_modules/m00150.pm
@@ -9,7 +9,7 @@ use strict;
 use warnings;
 
 use Digest::SHA1 qw (sha1);
-use Digest::HMAC qw (hmac hmac_hex);
+use Digest::HMAC qw (hmac_hex);
 
 sub module_constraints { [[0, 256], [0, 256], [0, 55], [0, 55], [-1, -1]] }
 
diff --git a/tools/test_modules/m00160.pm b/tools/test_modules/m00160.pm
index 9df358cf5..d97bd6a50 100644
--- a/tools/test_modules/m00160.pm
+++ b/tools/test_modules/m00160.pm
@@ -9,7 +9,7 @@ use strict;
 use warnings;
 
 use Digest::SHA1 qw (sha1);
-use Digest::HMAC qw (hmac hmac_hex);
+use Digest::HMAC qw (hmac_hex);
 
 sub module_constraints { [[0, 256], [0, 256], [0, 55], [0, 55], [-1, -1]] }
 
diff --git a/tools/test_modules/m00900.pm b/tools/test_modules/m00900.pm
index 686e9b1ec..64283bab6 100644
--- a/tools/test_modules/m00900.pm
+++ b/tools/test_modules/m00900.pm
@@ -9,7 +9,6 @@ use strict;
 use warnings;
 
 use Digest::MD4 qw (md4_hex);
-use Encode;
 
 sub module_constraints { [[0, 256], [-1, -1], [0, 27], [-1, -1], [-1, -1]] }
 
diff --git a/tools/test_modules/m01711.pm b/tools/test_modules/m01711.pm
index 87173f8d8..aec915f5b 100644
--- a/tools/test_modules/m01711.pm
+++ b/tools/test_modules/m01711.pm
@@ -9,7 +9,7 @@ use strict;
 use warnings;
 
 use Digest::SHA  qw (sha512_hex);
-use MIME::Base64 qw (encode_base64);
+use MIME::Base64 qw (encode_base64 decode_base64);
 
 sub module_constraints { [[0, 256], [0, 256], [0, 55], [0, 55], [0, 55]] }
 
diff --git a/tools/test_modules/m02100.pm b/tools/test_modules/m02100.pm
index 8face338c..e5f782e49 100644
--- a/tools/test_modules/m02100.pm
+++ b/tools/test_modules/m02100.pm
@@ -8,7 +8,7 @@
 use strict;
 use warnings;
 
-use Digest::MD4 qw (md4 md4_hex);
+use Digest::MD4 qw (md4);
 use Crypt::PBKDF2;
 use Encode;
 
diff --git a/tools/test_modules/m02400.pm b/tools/test_modules/m02400.pm
index 5b2ea6a6a..46cba1aee 100644
--- a/tools/test_modules/m02400.pm
+++ b/tools/test_modules/m02400.pm
@@ -9,7 +9,7 @@ use strict;
 use warnings;
 
 use Digest::MD5 qw (md5);
-use POSIX qw (strftime ceil);
+use POSIX qw (ceil);
 
 sub module_constraints { [[-1, -1], [-1, -1], [1, 55], [-1, -1], [-1, -1]] }
 
diff --git a/tools/test_modules/m05500.pm b/tools/test_modules/m05500.pm
index 8f7f9f83f..b7cc11e40 100644
--- a/tools/test_modules/m05500.pm
+++ b/tools/test_modules/m05500.pm
@@ -9,10 +9,8 @@ use strict;
 use warnings;
 
 use Authen::Passphrase::NTHash;
-use Digest::HMAC qw (hmac hmac_hex);
-use Digest::MD5  qw (md5);
-use Encode       qw (encode);
-use Crypt::ECB   qw (encrypt);
+use Digest::MD5 qw (md5);
+use Crypt::ECB;
 
 sub setup_des_key
 {
diff --git a/tools/test_modules/m07500.pm b/tools/test_modules/m07500.pm
index 45811b359..330e81e28 100644
--- a/tools/test_modules/m07500.pm
+++ b/tools/test_modules/m07500.pm
@@ -12,7 +12,6 @@ use Encode;
 use Crypt::RC4;
 use Digest::HMAC_MD5 qw (hmac_md5);
 use Digest::MD4      qw (md4);
-use Digest::MD5      qw (md5_hex);
 use POSIX            qw (strftime);
 
 sub get_random_kerberos5_salt
diff --git a/tools/test_modules/m08900.pm b/tools/test_modules/m08900.pm
index 219f432ba..ca3f56710 100644
--- a/tools/test_modules/m08900.pm
+++ b/tools/test_modules/m08900.pm
@@ -9,7 +9,7 @@ use strict;
 use warnings;
 
 use Crypt::ScryptKDF qw (scrypt_hash);
-use MIME::Base64 qw (decode_base64);
+use MIME::Base64     qw (decode_base64);
 
 sub module_constraints { [[0, 256], [1, 15], [-1, -1], [-1, -1], [-1, -1]] }
 
diff --git a/tools/test_modules/m10901.pm b/tools/test_modules/m10901.pm
index 75f6ca33a..e95fe2848 100644
--- a/tools/test_modules/m10901.pm
+++ b/tools/test_modules/m10901.pm
@@ -7,8 +7,9 @@
 
 use strict;
 use warnings;
+
 use Crypt::PBKDF2;
-use MIME::Base64;
+use MIME::Base64 qw (encode_base64 decode_base64);
 
 sub module_constraints { [[0, 256], [64, 64], [-1, -1], [-1, -1], [-1, -1]] }
 
diff --git a/tools/test_modules/m11200.pm b/tools/test_modules/m11200.pm
index 0d996e371..e42dc6623 100644
--- a/tools/test_modules/m11200.pm
+++ b/tools/test_modules/m11200.pm
@@ -8,7 +8,6 @@
 use strict;
 use warnings;
 
-use Digest::MD5 qw (md5_hex);
 use Digest::SHA qw (sha1);
 
 sub module_constraints { [[0, 256], [40, 40], [0, 55], [40, 40], [-1, -1]] }
diff --git a/tools/test_modules/m13100.pm b/tools/test_modules/m13100.pm
index 09068caf7..85f72f07a 100644
--- a/tools/test_modules/m13100.pm
+++ b/tools/test_modules/m13100.pm
@@ -12,8 +12,6 @@ use Encode;
 use Crypt::RC4;
 use Digest::HMAC_MD5 qw (hmac_md5);
 use Digest::MD4      qw (md4);
-use Digest::MD5      qw (md5_hex);
-use POSIX            qw (strftime);
 
 sub module_constraints { [[0, 256], [16, 16], [0, 27], [16, 16], [-1, -1]] }
 
diff --git a/tools/test_modules/m13900.pm b/tools/test_modules/m13900.pm
index 195e82919..f037734f7 100644
--- a/tools/test_modules/m13900.pm
+++ b/tools/test_modules/m13900.pm
@@ -9,7 +9,6 @@ use strict;
 use warnings;
 
 use Digest::SHA qw (sha1_hex);
-use Encode;
 
 sub module_constraints { [[0, 256], [9, 9], [0, 46], [9, 9], [-1, -1]] }
 
diff --git a/tools/test_modules/m15300.pm b/tools/test_modules/m15300.pm
index de51b1373..8b76a6d3d 100644
--- a/tools/test_modules/m15300.pm
+++ b/tools/test_modules/m15300.pm
@@ -8,9 +8,9 @@
 use strict;
 use warnings;
 
-use Crypt::ECB  qw (encrypt);
 use Digest::MD4 qw (md4);
 use Digest::SHA qw (sha1 hmac_sha1);
+use Crypt::ECB;
 use Encode;
 
 sub module_constraints { [[0, 256], [-1, -1], [-1, -1], [-1, -1], [-1, -1]] }
diff --git a/tools/test_modules/m15900.pm b/tools/test_modules/m15900.pm
index 36d7801b0..c825f1b3a 100644
--- a/tools/test_modules/m15900.pm
+++ b/tools/test_modules/m15900.pm
@@ -8,10 +8,10 @@
 use strict;
 use warnings;
 
-use Crypt::CBC;
-use Crypt::ECB  qw (encrypt);
 use Digest::MD4 qw (md4);
 use Digest::SHA qw (sha1 hmac_sha1 hmac_sha512);
+use Crypt::CBC;
+use Crypt::ECB;
 use Encode;
 
 sub module_constraints { [[0, 256], [-1, -1], [-1, -1], [-1, -1], [-1, -1]] }
diff --git a/tools/test_modules/m16900.pm b/tools/test_modules/m16900.pm
index 8f99dbbb3..5952274c9 100644
--- a/tools/test_modules/m16900.pm
+++ b/tools/test_modules/m16900.pm
@@ -10,7 +10,7 @@ use warnings;
 
 use Crypt::PBKDF2;
 use Digest::HMAC qw (hmac_hex);
-use Digest::SHA qw (sha256);
+use Digest::SHA  qw (sha256);
 
 sub module_constraints { [[0, 256], [-1, -1], [-1, -1], [-1, -1], [-1, -1]] }
 
diff --git a/tools/test_modules/m18200.pm b/tools/test_modules/m18200.pm
index 081235e6b..593025f25 100644
--- a/tools/test_modules/m18200.pm
+++ b/tools/test_modules/m18200.pm
@@ -12,8 +12,6 @@ use Encode;
 use Crypt::RC4;
 use Digest::HMAC_MD5 qw (hmac_md5);
 use Digest::MD4      qw (md4);
-use Digest::MD5      qw (md5_hex);
-use POSIX            qw (strftime);
 
 sub module_constraints { [[0, 256], [16, 16], [0, 27], [16, 16], [-1, -1]] }
 
diff --git a/tools/test_modules/m19600.pm b/tools/test_modules/m19600.pm
index 86109a6be..0031e5033 100644
--- a/tools/test_modules/m19600.pm
+++ b/tools/test_modules/m19600.pm
@@ -11,8 +11,6 @@ use warnings;
 use Digest::SHA qw (hmac_sha1);
 use Crypt::Mode::CBC;
 use Crypt::PBKDF2;
-use Encode;
-use POSIX            qw (strftime);
 
 sub byte2hex
 {
diff --git a/tools/test_modules/m19700.pm b/tools/test_modules/m19700.pm
index 018a51898..d2c543cd0 100644
--- a/tools/test_modules/m19700.pm
+++ b/tools/test_modules/m19700.pm
@@ -11,8 +11,6 @@ use warnings;
 use Digest::SHA qw (hmac_sha1);
 use Crypt::Mode::CBC;
 use Crypt::PBKDF2;
-use Encode;
-use POSIX            qw (strftime);
 
 sub byte2hex
 {
diff --git a/tools/test_modules/m19800.pm b/tools/test_modules/m19800.pm
index 7fa282b75..da18de075 100644
--- a/tools/test_modules/m19800.pm
+++ b/tools/test_modules/m19800.pm
@@ -11,8 +11,6 @@ use warnings;
 use Digest::SHA qw (hmac_sha1);
 use Crypt::Mode::CBC;
 use Crypt::PBKDF2;
-use Encode;
-use POSIX            qw (strftime);
 
 sub byte2hex
 {
diff --git a/tools/test_modules/m19900.pm b/tools/test_modules/m19900.pm
index 5b8465bbf..bf2084228 100644
--- a/tools/test_modules/m19900.pm
+++ b/tools/test_modules/m19900.pm
@@ -11,8 +11,6 @@ use warnings;
 use Digest::SHA qw (hmac_sha1);
 use Crypt::Mode::CBC;
 use Crypt::PBKDF2;
-use Encode;
-use POSIX            qw (strftime);
 
 sub byte2hex
 {
diff --git a/tools/test_modules/m20011.pm b/tools/test_modules/m20011.pm
index d603545d5..01b8cf3ac 100644
--- a/tools/test_modules/m20011.pm
+++ b/tools/test_modules/m20011.pm
@@ -9,7 +9,7 @@ use strict;
 use warnings;
 
 use Crypt::PBKDF2;
-use MIME::Base64 qw (encode_base64 decode_base64);
+use MIME::Base64 qw (encode_base64);
 use Encode;
 
 sub module_constraints { [[0, 256], [128, 128], [-1, -1], [-1, -1], [-1, -1]] }
diff --git a/tools/test_modules/m20012.pm b/tools/test_modules/m20012.pm
index 0ecb0d142..c58ed843e 100644
--- a/tools/test_modules/m20012.pm
+++ b/tools/test_modules/m20012.pm
@@ -9,7 +9,7 @@ use strict;
 use warnings;
 
 use Crypt::PBKDF2;
-use MIME::Base64 qw (encode_base64 decode_base64);
+use MIME::Base64 qw (encode_base64);
 use Encode;
 
 sub module_constraints { [[0, 256], [128, 128], [-1, -1], [-1, -1], [-1, -1]] }
diff --git a/tools/test_modules/m20013.pm b/tools/test_modules/m20013.pm
index 81cca9454..0f7b361ab 100644
--- a/tools/test_modules/m20013.pm
+++ b/tools/test_modules/m20013.pm
@@ -9,7 +9,7 @@ use strict;
 use warnings;
 
 use Crypt::PBKDF2;
-use MIME::Base64 qw (encode_base64 decode_base64);
+use MIME::Base64 qw (encode_base64);
 use Encode;
 
 sub module_constraints { [[0, 256], [128, 128], [-1, -1], [-1, -1], [-1, -1]] }
diff --git a/tools/test_modules/m20600.pm b/tools/test_modules/m20600.pm
index a5e27b52d..7f93bcac2 100644
--- a/tools/test_modules/m20600.pm
+++ b/tools/test_modules/m20600.pm
@@ -8,8 +8,8 @@
 use strict;
 use warnings;
 
-use Digest::SHA qw (sha256);
-use MIME::Base64;
+use Digest::SHA  qw (sha256);
+use MIME::Base64 qw (encode_base64);
 
 sub module_constraints { [[0, 256], [0, 16], [-1, -1], [-1, -1], [-1, -1]] }
 
diff --git a/tools/test_modules/m21500.pm b/tools/test_modules/m21500.pm
index c09d3eb9a..12f72050f 100644
--- a/tools/test_modules/m21500.pm
+++ b/tools/test_modules/m21500.pm
@@ -8,9 +8,9 @@
 use strict;
 use warnings;
 
-use MIME::Base64 qw (encode_base64 decode_base64);
+use MIME::Base64 qw (encode_base64);
+use Digest::SHA  qw (sha512);
 use Crypt::PBKDF2;
-use Digest::SHA qw (sha512);
 use Encode;
 
 sub module_constraints { [[0, 256], [0, 256], [-1, -1], [-1, -1], [-1, -1]] }
diff --git a/tools/test_modules/m21501.pm b/tools/test_modules/m21501.pm
index f636f2e71..eec8b2899 100644
--- a/tools/test_modules/m21501.pm
+++ b/tools/test_modules/m21501.pm
@@ -8,9 +8,9 @@
 use strict;
 use warnings;
 
-use MIME::Base64 qw (encode_base64 decode_base64);
+use MIME::Base64 qw (encode_base64);
+use Digest::SHA  qw (sha512);
 use Crypt::PBKDF2;
-use Digest::SHA qw (sha512);
 use Encode;
 
 sub module_constraints { [[0, 256], [16, 16], [-1, -1], [-1, -1], [-1, -1]] }
diff --git a/tools/test_modules/m21600.pm b/tools/test_modules/m21600.pm
index 03f480059..efa3c206d 100644
--- a/tools/test_modules/m21600.pm
+++ b/tools/test_modules/m21600.pm
@@ -8,13 +8,10 @@
 use strict;
 use warnings;
 
-use MIME::Base64 qw (encode_base64 decode_base64);
 use Crypt::PBKDF2;
 
 sub module_constraints { [[0, 256], [1, 15], [-1, -1], [-1, -1], [-1, -1]] }
 
-#pbkdf2(1000,20,sha512)$a2a2ca127df6bc19$77bb5a3d129e2ce710daaefeefef8356c4c827ff";
-
 sub module_generate_hash
 {
   my $word       = shift;
@@ -37,8 +34,6 @@ sub module_generate_hash
   return $hash;
 }
 
-#pbkdf2(1000,20,sha512)$a2a2ca127df6bc19$77bb5a3d129e2ce710daaefeefef8356c4c827ff";
-
 sub module_verify_hash
 {
   my $line = shift;
diff --git a/tools/test_modules/m24700.pm b/tools/test_modules/m24700.pm
index 47806b512..b92173502 100644
--- a/tools/test_modules/m24700.pm
+++ b/tools/test_modules/m24700.pm
@@ -8,7 +8,6 @@
 use strict;
 use warnings;
 
-use Digest::MD5 qw (md5_hex);
 use Digest::MD5 qw (md5);
 
 sub module_constraints { [[0, 256], [-1, -1], [0, 55], [-1, -1], [-1, -1]] }
diff --git a/tools/test_modules/m24800.pm b/tools/test_modules/m24800.pm
index 9d63a2c9c..00de6fced 100644
--- a/tools/test_modules/m24800.pm
+++ b/tools/test_modules/m24800.pm
@@ -9,9 +9,9 @@ use strict;
 use warnings;
 
 use Digest::SHA1 qw (sha1);
-use Digest::HMAC qw (hmac hmac_hex);
-use Encode qw (encode decode);
-use MIME::Base64;
+use Digest::HMAC qw (hmac);
+use Encode       qw (encode);
+use MIME::Base64 qw (encode_base64);
 
 sub module_constraints { [[0, 256], [0, 256], [0, 27], [0, 27], [0, 27]] }
 
diff --git a/tools/test_modules/m24900.pm b/tools/test_modules/m24900.pm
index c0ed9190a..fa3ef994e 100644
--- a/tools/test_modules/m24900.pm
+++ b/tools/test_modules/m24900.pm
@@ -7,7 +7,6 @@
 
 use strict;
 use warnings;
-use MIME::Base64 qw (encode_base64 decode_base64);
 
 use Digest::MD5 qw (md5);
 
diff --git a/tools/test_modules/m25000.pm b/tools/test_modules/m25000.pm
index 71cc1c512..002a29a22 100644
--- a/tools/test_modules/m25000.pm
+++ b/tools/test_modules/m25000.pm
@@ -8,9 +8,9 @@
 use strict;
 use warnings;
 
-use Digest::MD5 qw (md5 md5_hex);
-use Digest::SHA qw (sha1 sha1_hex);
-use Digest::HMAC qw (hmac hmac_hex);
+use Digest::MD5  qw (md5 md5_hex);
+use Digest::SHA  qw (sha1 sha1_hex);
+use Digest::HMAC qw (hmac_hex);
 
 sub module_constraints { [[8, 256], [24, 3000], [-1, -1], [-1, -1], [-1, -1]] }
 
@@ -18,13 +18,13 @@ sub module_generate_hash
 {
   my $word = shift;
   my $salt = shift;
-  my $pkt_num = shift // int(rand(100000000));
-  my $engineID = shift // random_hex_string(26, 34);
-  my $mode = shift // int(rand(1)) + 1;
+  my $pkt_num = shift // int (rand (100000000));
+  my $engineID = shift // random_hex_string (26, 34);
+  my $mode = shift // int (rand (1)) + 1;
 
   # make even if needed
 
-  if (length($salt) %2 == 1)
+  if (length ($salt) % 2 == 1)
   {
     $salt = $salt . "8";
   }
@@ -50,15 +50,15 @@ sub module_generate_hash
 
   if ($mode eq 2)
   {
-    my $digest2 = sha1(pack("H*", $buf));
+    my $digest2 = sha1 (pack ("H*", $buf));
 
-    $digest = hmac_hex (pack("H*", $salt), $digest2, \&sha1);
+    $digest = hmac_hex (pack ("H*", $salt), $digest2, \&sha1);
   }
   elsif ($mode eq 1)
   {
-    my $digest2 = md5(pack("H*", $buf));
+    my $digest2 = md5 (pack ("H*", $buf));
 
-    $digest = hmac_hex (pack("H*", $salt), $digest2, \&md5);
+    $digest = hmac_hex (pack ("H*", $salt), $digest2, \&md5);
   }
 
   $digest = substr ($digest, 0, 24);
diff --git a/tools/test_modules/m25100.pm b/tools/test_modules/m25100.pm
index 2335f7f2f..895134cf0 100644
--- a/tools/test_modules/m25100.pm
+++ b/tools/test_modules/m25100.pm
@@ -8,8 +8,8 @@
 use strict;
 use warnings;
 
-use Digest::MD5 qw (md5 md5_hex);
-use Digest::HMAC qw (hmac hmac_hex);
+use Digest::MD5  qw (md5 md5_hex);
+use Digest::HMAC qw (hmac_hex);
 
 sub module_constraints { [[8, 256], [24, 3000], [-1, -1], [-1, -1], [-1, -1]] }
 
@@ -17,12 +17,12 @@ sub module_generate_hash
 {
   my $word = shift;
   my $salt = shift;
-  my $pkt_num = shift // int(rand(100000000));
-  my $engineID = shift // random_hex_string(26, 34);
+  my $pkt_num = shift // int (rand (100000000));
+  my $engineID = shift // random_hex_string (26, 34);
 
   # make even if needed
 
-  if (length($salt) %2 == 1)
+  if (length ($salt) % 2 == 1)
   {
     $salt = $salt . "8";
   }
@@ -35,9 +35,9 @@ sub module_generate_hash
 
   my $buf = join '', $md5_digest1, $engineID, $md5_digest1;
 
-  my $md5_digest2 = md5(pack("H*", $buf));
+  my $md5_digest2 = md5 (pack ("H*", $buf));
 
-  my $digest = hmac_hex (pack("H*", $salt), $md5_digest2, \&md5);
+  my $digest = hmac_hex (pack ("H*", $salt), $md5_digest2, \&md5);
 
   $digest = substr ($digest, 0, 24);
 
diff --git a/tools/test_modules/m25200.pm b/tools/test_modules/m25200.pm
index d27908255..c649aa72e 100644
--- a/tools/test_modules/m25200.pm
+++ b/tools/test_modules/m25200.pm
@@ -8,8 +8,8 @@
 use strict;
 use warnings;
 
-use Digest::SHA qw (sha1 sha1_hex);
-use Digest::HMAC qw (hmac hmac_hex);
+use Digest::SHA  qw (sha1 sha1_hex);
+use Digest::HMAC qw (hmac_hex);
 
 sub module_constraints { [[8, 256], [24, 3000], [-1, -1], [-1, -1], [-1, -1]] }
 
@@ -17,12 +17,12 @@ sub module_generate_hash
 {
   my $word = shift;
   my $salt = shift;
-  my $pkt_num = shift // int(rand(100000000));
-  my $engineID = shift // random_hex_string(26, 34);
+  my $pkt_num = shift // int (rand (100000000));
+  my $engineID = shift // random_hex_string (26, 34);
 
   # make even if needed
 
-  if (length($salt) %2 == 1)
+  if (length ($salt) % 2 == 1)
   {
     $salt = $salt . "8";
   }
@@ -35,9 +35,9 @@ sub module_generate_hash
 
   my $buf = join '', $sha1_digest1, $engineID, $sha1_digest1;
 
-  my $sha1_digest2 = sha1(pack("H*", $buf));
+  my $sha1_digest2 = sha1 (pack ("H*", $buf));
 
-  my $digest = hmac_hex (pack("H*", $salt), $sha1_digest2, \&sha1);
+  my $digest = hmac_hex (pack ("H*", $salt), $sha1_digest2, \&sha1);
 
   $digest = substr ($digest, 0, 24);
 
diff --git a/tools/test_modules/m25300.pm b/tools/test_modules/m25300.pm
index 7f2db420d..2a1f9e340 100644
--- a/tools/test_modules/m25300.pm
+++ b/tools/test_modules/m25300.pm
@@ -8,8 +8,8 @@
 use strict;
 use warnings;
 
-use MIME::Base64 qw (encode_base64 decode_base64);
-use Digest::SHA qw (sha512);
+use MIME::Base64 qw (encode_base64);
+use Digest::SHA  qw (sha512);
 use Encode;
 
 sub module_constraints { [[0, 64], [16, 16], [-1, -1], [-1, -1], [-1, -1]] }
diff --git a/tools/test_modules/m25400.pm b/tools/test_modules/m25400.pm
index 06ed93ab1..7dce337bb 100644
--- a/tools/test_modules/m25400.pm
+++ b/tools/test_modules/m25400.pm
@@ -99,11 +99,11 @@ sub pdf_compute_encryption_key_owner
   my $o_key;
   if ($R == 2)
   {
-    $o_key = substr($o_digest, 0, 8);  # rc4 key is always 5 for revision 2, but for 3 or greather is dependent on the value of the encryption dictionaries length entry
+    $o_key = substr ($o_digest, 0, 8);  # rc4 key is always 5 for revision 2, but for 3 or greather is dependent on the value of the encryption dictionaries length entry
   }
   else
   {
-    $o_key = substr($o_digest, 0, 16); #length is always 128 bits or 16 bytes
+    $o_key = substr ($o_digest, 0, 16); # length is always 128 bits or 16 bytes
   }
 
   return $o_key;
@@ -175,15 +175,15 @@ sub module_generate_hash
   if ($u eq "0000000000000000000000000000000000000000000000000000000000000000")
   {
     my $res;
-    if($u_pass eq "")
+    if ($u_pass eq "")
     {
       # we don't know the user-password so calculate $u based on the owner-password
-    $res = pdf_compute_encryption_key_user($word, $padding, $id, $u, $o, $P, $V, $R, $enc);
+      $res = pdf_compute_encryption_key_user ($word, $padding, $id, $u, $o, $P, $V, $R, $enc);
     }
     else
     {
-    #we do know the user-password, so we can generate $u
-    $res = pdf_compute_encryption_key_user($u_pass, $padding, $id, $u, $o, $P, $V, $R, $enc);
+      # we do know the user-password, so we can generate $u
+      $res = pdf_compute_encryption_key_user ($u_pass, $padding, $id, $u, $o, $P, $V, $R, $enc);
     }
 
     my $digest = md5 ($padding . pack ("H*", $id));
@@ -193,7 +193,7 @@ sub module_generate_hash
 
     my @ress = split "", $res;
 
-    #do xor of rc4 19 times
+    # do xor of rc4 19 times
     for (my $x = 1; $x <= 19; $x++)
     {
     my @xor;
@@ -213,28 +213,28 @@ sub module_generate_hash
   }
   else
   {
-    $u = pack("H*", $u)
+    $u = pack ("H*", $u)
   }
 
   ################ OWNER PASSWORD #################
-  my $o_key = pdf_compute_encryption_key_owner($word, $padding, $id, $u, $o, $P, $V, $R, $enc);
+  my $o_key = pdf_compute_encryption_key_owner ($word, $padding, $id, $u, $o, $P, $V, $R, $enc);
 
   my $n = Crypt::RC4->new ($o_key);
-  if($u_pass eq "")
+  if ($u_pass eq "")
   {
-     $o = $n->RC4(substr ($padding, 0, 32 - length ""));
+     $o = $n->RC4 (substr ($padding, 0, 32 - length ""));
   }
   else
   {
-    #dynamically add user password including padding to the RC4 input for the computation of the pdf o-value
-    $o = $n->RC4($u_pass.substr ($padding, 0, 32 - length $u_pass));
+    # dynamically add user password including padding to the RC4 input for the computation of the pdf o-value
+    $o = $n->RC4 ($u_pass . substr ($padding, 0, 32 - length $u_pass));
   }
 
   my @ress2 = split "", $o_key;
 
   if ($R >= 3)
   {
-    #do xor of rc4 19 times
+    # do xor of rc4 19 times
     for (my $x = 1; $x <= 19; $x++)
     {
       my @xor;
@@ -245,14 +245,14 @@ sub module_generate_hash
       }
 
       my $s = join ("", @xor);
-    my $n2 = Crypt::RC4->new ($s);
+      my $n2 = Crypt::RC4->new ($s);
 
       $o = $n2->RC4 ($o);
     }
   }
 
   my $hash;
-  if($u_pass eq "")
+  if ($u_pass eq "")
   {
     $hash = sprintf ('$pdf$%d*%d*128*%d*%d*16*%s*32*%s*32*%s', $V, $R, $P, $enc, $id, unpack ("H*", $u), unpack ("H*", $o));
   }
@@ -275,7 +275,7 @@ sub module_verify_hash
   my @data = split /\*/, $hash_in;
 
   my $i_data = scalar @data;
-  return unless ($i_data == 11) || ($i_data == 12); #or 12 if user-password is included
+  return unless ($i_data == 11) || ($i_data == 12); # or 12 if user-password is included
 
   my $V        = shift @data; $V = substr ($V, 5, 1);
   my $R        = shift @data;
@@ -290,7 +290,8 @@ sub module_verify_hash
   my $o        = shift @data;
 
   my $u_pass = "";
-  if($i_data == 12) {
+  if ($i_data == 12)
+  {
     $u_pass = shift @data;
   }
 
diff --git a/tools/test_modules/m25700.pm b/tools/test_modules/m25700.pm
index 56f6c042f..aaea6c1c8 100644
--- a/tools/test_modules/m25700.pm
+++ b/tools/test_modules/m25700.pm
@@ -145,4 +145,3 @@ sub module_verify_hash
 }
 
 1;
-
diff --git a/tools/test_modules/m26600.pm b/tools/test_modules/m26600.pm
index 53a8a7b0b..69dcf71bd 100644
--- a/tools/test_modules/m26600.pm
+++ b/tools/test_modules/m26600.pm
@@ -58,12 +58,12 @@ sub module_generate_hash
     }
     else
     {
-      $pt = "\xff" x ($ct_min_len + int(rand($ct_max_len - $ct_min_len)) + 1);
+      $pt = "\xff" x ($ct_min_len + int (rand ($ct_max_len - $ct_min_len)) + 1);
     }
   }
   else
   {
-    $pt = "\xff" x ($ct_min_len + int(rand($ct_max_len - $ct_min_len)) + 1);
+    $pt = "\xff" x ($ct_min_len + int (rand ($ct_max_len - $ct_min_len)) + 1);
   }
 
   my $aes = Crypt::AuthEnc::GCM->new ("AES", $key, $iv_bin);
diff --git a/tools/test_modules/m26700.pm b/tools/test_modules/m26700.pm
index a97bc246e..af72f3704 100644
--- a/tools/test_modules/m26700.pm
+++ b/tools/test_modules/m26700.pm
@@ -8,8 +8,8 @@
 use strict;
 use warnings;
 
-use Digest::SHA qw (sha224 sha224_hex);
-use Digest::HMAC qw (hmac hmac_hex);
+use Digest::SHA  qw (sha224 sha224_hex);
+use Digest::HMAC qw (hmac_hex);
 
 sub module_constraints { [[8, 256], [32, 3000], [-1, -1], [-1, -1], [-1, -1]] }
 
@@ -17,12 +17,12 @@ sub module_generate_hash
 {
   my $word = shift;
   my $salt = shift;
-  my $pkt_num = shift // int(rand(100000000));
-  my $engineID = shift // random_hex_string(26, 34);
+  my $pkt_num = shift // int (rand (100000000));
+  my $engineID = shift // random_hex_string (26, 34);
 
   # make even if needed
 
-  if (length($salt) %2 == 1)
+  if (length ($salt) % 2 == 1)
   {
     $salt = $salt . "8";
   }
@@ -35,9 +35,9 @@ sub module_generate_hash
 
   my $buf = join '', $sha224_digest1, $engineID, $sha224_digest1;
 
-  my $sha224_digest2 = sha224(pack("H*", $buf));
+  my $sha224_digest2 = sha224 (pack ("H*", $buf));
 
-  my $digest = hmac_hex (pack("H*", $salt), $sha224_digest2, \&sha224);
+  my $digest = hmac_hex (pack ("H*", $salt), $sha224_digest2, \&sha224);
 
   $digest = substr ($digest, 0, 32);
 
diff --git a/tools/test_modules/m26800.pm b/tools/test_modules/m26800.pm
index 3039afb6b..b0c8e9e8f 100644
--- a/tools/test_modules/m26800.pm
+++ b/tools/test_modules/m26800.pm
@@ -8,8 +8,8 @@
 use strict;
 use warnings;
 
-use Digest::SHA qw (sha256 sha256_hex);
-use Digest::HMAC qw (hmac hmac_hex);
+use Digest::SHA  qw (sha256 sha256_hex);
+use Digest::HMAC qw (hmac_hex);
 
 sub module_constraints { [[8, 256], [48, 3000], [-1, -1], [-1, -1], [-1, -1]] }
 
@@ -17,12 +17,12 @@ sub module_generate_hash
 {
   my $word = shift;
   my $salt = shift;
-  my $pkt_num = shift // int(rand(100000000));
-  my $engineID = shift // random_hex_string(26, 34);
+  my $pkt_num = shift // int (rand (100000000));
+  my $engineID = shift // random_hex_string (26, 34);
 
   # make even if needed
 
-  if (length($salt) %2 == 1)
+  if (length ($salt) % 2 == 1)
   {
     $salt = $salt . "8";
   }
@@ -35,9 +35,9 @@ sub module_generate_hash
 
   my $buf = join '', $sha256_digest1, $engineID, $sha256_digest1;
 
-  my $sha256_digest2 = sha256(pack("H*", $buf));
+  my $sha256_digest2 = sha256 (pack ("H*", $buf));
 
-  my $digest = hmac_hex (pack("H*", $salt), $sha256_digest2, \&sha256);
+  my $digest = hmac_hex (pack ("H*", $salt), $sha256_digest2, \&sha256);
 
   $digest = substr ($digest, 0, 48);
 
diff --git a/tools/test_modules/m26900.pm b/tools/test_modules/m26900.pm
index 66c3f9a53..ea9089aff 100644
--- a/tools/test_modules/m26900.pm
+++ b/tools/test_modules/m26900.pm
@@ -9,7 +9,6 @@ use strict;
 use warnings;
 
 use Digest::SHA qw (sha384 sha384_hex hmac_sha384_hex);
-#use Digest::HMAC qw (hmac hmac_hex);
 
 sub module_constraints { [[8, 256], [64, 3000], [-1, -1], [-1, -1], [-1, -1]] }
 
@@ -17,8 +16,8 @@ sub module_generate_hash
 {
   my $word = shift;
   my $salt = shift;
-  my $pkt_num = shift // int(rand(100000000));
-  my $engineID = shift // random_hex_string(26, 34);
+  my $pkt_num = shift // int (rand (100000000));
+  my $engineID = shift // random_hex_string (26, 34);
 
   # padding engineID: fill with zero
 
@@ -30,7 +29,7 @@ sub module_generate_hash
 
   # make salt even if needed
 
-  if (length($salt) %2 == 1)
+  if (length ($salt) % 2 == 1)
   {
     $salt = $salt . "8";
   }
@@ -43,9 +42,9 @@ sub module_generate_hash
 
   my $buf = join '', $sha384_digest1, $engineID, $sha384_digest1;
 
-  my $sha384_digest2 = sha384(pack("H*", $buf));
+  my $sha384_digest2 = sha384 (pack ("H*", $buf));
 
-  my $digest = hmac_sha384_hex (pack("H*", $salt), $sha384_digest2);
+  my $digest = hmac_sha384_hex (pack ("H*", $salt), $sha384_digest2);
 
   $digest = substr ($digest, 0, 64);
 
diff --git a/tools/test_modules/m27000.pm b/tools/test_modules/m27000.pm
index 116c97d04..d72d77ad7 100644
--- a/tools/test_modules/m27000.pm
+++ b/tools/test_modules/m27000.pm
@@ -8,10 +8,8 @@
 use strict;
 use warnings;
 
-use Digest::HMAC qw (hmac hmac_hex);
-use Digest::MD5  qw (md5);
-use Encode       qw (encode);
-use Crypt::ECB   qw (encrypt);
+use Digest::MD5 qw (md5);
+use Crypt::ECB;
 
 sub setup_des_key
 {
diff --git a/tools/test_modules/m27100.pm b/tools/test_modules/m27100.pm
index a07e81090..92875688e 100644
--- a/tools/test_modules/m27100.pm
+++ b/tools/test_modules/m27100.pm
@@ -87,4 +87,3 @@ sub random_client_challenge
 }
 
 1;
-
diff --git a/tools/test_modules/m27300.pm b/tools/test_modules/m27300.pm
index a2cec5372..cbce27eb7 100644
--- a/tools/test_modules/m27300.pm
+++ b/tools/test_modules/m27300.pm
@@ -16,8 +16,8 @@ sub module_generate_hash
 {
   my $word = shift;
   my $salt = shift;
-  my $pkt_num = shift // int(rand(100000000));
-  my $engineID = shift // random_hex_string(26, 34);
+  my $pkt_num = shift // int (rand (100000000));
+  my $engineID = shift // random_hex_string (26, 34);
 
   # padding engineID: fill with zero
 
@@ -27,7 +27,7 @@ sub module_generate_hash
 
   # make salt even if needed
 
-  if (length($salt) %2 == 1)
+  if (length ($salt) % 2 == 1)
   {
     $salt = $salt . "8";
   }
@@ -40,9 +40,9 @@ sub module_generate_hash
 
   my $buf = join '', $sha512_digest1, $engineID, $sha512_digest1;
 
-  my $sha512_digest2 = sha512(pack("H*", $buf));
+  my $sha512_digest2 = sha512 (pack ("H*", $buf));
 
-  my $digest = hmac_sha512_hex (pack("H*", $salt), $sha512_digest2);
+  my $digest = hmac_sha512_hex (pack ("H*", $salt), $sha512_digest2);
 
   $digest = substr ($digest, 0, 96);
 
diff --git a/tools/test_modules/m27500.pm b/tools/test_modules/m27500.pm
index d19ee27fd..ee12f2cfe 100644
--- a/tools/test_modules/m27500.pm
+++ b/tools/test_modules/m27500.pm
@@ -9,8 +9,7 @@ use strict;
 use warnings;
 
 use Crypt::PBKDF2;
-use MIME::Base64 qw (encode_base64 decode_base64);
-use Encode;
+use MIME::Base64 qw (encode_base64);
 
 sub module_constraints { [[0, 256], [64, 64], [-1, -1], [-1, -1], [-1, -1]] }
 
diff --git a/tools/test_modules/m27600.pm b/tools/test_modules/m27600.pm
index 6df7583d7..b232d2a8d 100644
--- a/tools/test_modules/m27600.pm
+++ b/tools/test_modules/m27600.pm
@@ -9,8 +9,7 @@ use strict;
 use warnings;
 
 use Crypt::PBKDF2;
-use MIME::Base64 qw (encode_base64 decode_base64);
-use Encode;
+use MIME::Base64 qw (encode_base64);
 
 sub module_constraints { [[0, 256], [64, 64], [-1, -1], [-1, -1], [-1, -1]] }
 
diff --git a/tools/test_modules/m28300.pm b/tools/test_modules/m28300.pm
index e098dd827..c385073a1 100644
--- a/tools/test_modules/m28300.pm
+++ b/tools/test_modules/m28300.pm
@@ -8,9 +8,8 @@
 use strict;
 use warnings;
 
-use Digest::SHA1 qw (sha1 sha1_hex);
-use Encode qw (encode decode);
-use MIME::Base64;
+use Digest::SHA1 qw (sha1);
+use MIME::Base64 qw (encode_base64 decode_base64);
 
 sub module_constraints { [[0, 256], [224, 224], [-1, -1], [-1, -1], [-1, -1]] }