diff --git a/crypt_3des.ml b/crypt_3des.ml
index 76efaeaa7a3a1404f23160cb6f6b801260d97d02..b01737be5dcf44e591ca095d29b24826dd752991 100644
--- a/crypt_3des.ml
+++ b/crypt_3des.ml
@@ -1,4 +1,4 @@
-(* $Id: crypt_3des.ml,v 1.2 2001/03/10 16:43:21 gerd Exp $
+(* $Id$
  * ----------------------------------------------------------------------
  * This module is part of the cryptgps package by Gerd Stolpmann.
  *)
@@ -128,15 +128,3 @@ module Cryptmodes = Cryptmodes_64.Make_modes(Cryptsystem)
 ;;
 
 
-(* ======================================================================
- * History:
- * 
- * $Log: crypt_3des.ml,v $
- * Revision 1.2  2001/03/10 16:43:21  gerd
- * 	int32 experiments
- *
- * Revision 1.1  1999/06/18 00:23:58  gerd
- * 	First release.
- *
- * 
- *)
diff --git a/crypt_3des.mli b/crypt_3des.mli
index 30cba23b24b0ec9d3aac5a8b367ddb186117d0e2..cdc582dea6cafc47030da9df68ced1f9235504f7 100644
--- a/crypt_3des.mli
+++ b/crypt_3des.mli
@@ -1,4 +1,4 @@
-(* $Id: crypt_3des.mli,v 1.1 1999/06/18 00:23:58 gerd Exp $
+(* $Id$
  * ----------------------------------------------------------------------
  * This module is part of the cryptgps package by Gerd Stolpmann.
  *)
@@ -45,11 +45,3 @@ val set_parity : string -> string
  * - There are very few weak keys.
  *)
 
-(* ======================================================================
- * History:
- * 
- * $Log: crypt_3des.mli,v $
- * Revision 1.1  1999/06/18 00:23:58  gerd
- * 	First release.
- *
- *)
diff --git a/crypt_blowfish.ml b/crypt_blowfish.ml
index d9b753b5318a4aab382e95d3294cb49af5e8549c..f23631a3301d62c53c8f094448e9dc7e0307744b 100644
--- a/crypt_blowfish.ml
+++ b/crypt_blowfish.ml
@@ -1,4 +1,4 @@
-(* $Id: crypt_blowfish.ml,v 1.2 2001/03/10 16:43:21 gerd Exp $
+(* $Id$
  * ----------------------------------------------------------------------
  * This module is part of the cryptgps package by Gerd Stolpmann.
  *)
@@ -763,15 +763,3 @@ module Cryptmodes = Cryptmodes_64.Make_modes(Cryptsystem)
 ;;
 
 
-(* ======================================================================
- * History:
- * 
- * $Log: crypt_blowfish.ml,v $
- * Revision 1.2  2001/03/10 16:43:21  gerd
- * 	int32 experiments
- *
- * Revision 1.1  1999/06/04 20:42:00  gerd
- * 	Initial revision.
- *
- * 
- *)
diff --git a/crypt_blowfish.mli b/crypt_blowfish.mli
index 91a71b31e7eeec5befeb1bdf7e2dc4779d50f76b..7ff8b5b364aa9bac831f985050c0987f2d1403cb 100644
--- a/crypt_blowfish.mli
+++ b/crypt_blowfish.mli
@@ -1,4 +1,4 @@
-(* $Id: crypt_blowfish.mli,v 1.1 1999/06/04 20:42:01 gerd Exp $
+(* $Id$
  * ----------------------------------------------------------------------
  * This module is part of the cryptgps package by Gerd Stolpmann.
  *)
@@ -21,12 +21,3 @@ module Cryptmodes : Cryptmodes_64.T with type key = Cryptsystem.key;;
  * - Blowfish is public domain, i.e. free from patents.
  *)
 
-(* ======================================================================
- * History:
- * 
- * $Log: crypt_blowfish.mli,v $
- * Revision 1.1  1999/06/04 20:42:01  gerd
- * 	Initial revision.
- *
- * 
- *)
diff --git a/crypt_blowfish32.ml b/crypt_blowfish32.ml
index 49cd45c397ff3110407cbca2d9eb00d87b4e47fc..f58fe77062065c7d8de2454b492b3c1d95d401b9 100644
--- a/crypt_blowfish32.ml
+++ b/crypt_blowfish32.ml
@@ -1,4 +1,4 @@
-(* $Id: crypt_blowfish32.ml,v 1.1 2001/03/10 16:43:00 gerd Exp $
+(* $Id$
  * ----------------------------------------------------------------------
  * This module is part of the cryptgps package by Gerd Stolpmann.
  *)
@@ -747,11 +747,3 @@ module Cryptmodes = Cryptmodes_64.Make_modes_int32(Cryptsystem)
 ;;
 
 
-(* ======================================================================
- * History:
- * 
- * $Log: crypt_blowfish32.ml,v $
- * Revision 1.1  2001/03/10 16:43:00  gerd
- * 	Initial revision.
- *
- *)
diff --git a/crypt_blowfish32.mli b/crypt_blowfish32.mli
index d52b9bf5bb573474c22d0ca8826ffb22e01c5036..4edd3e5d5fb7f380d560db3da1287da52ad4bb60 100644
--- a/crypt_blowfish32.mli
+++ b/crypt_blowfish32.mli
@@ -1,4 +1,4 @@
-(* $Id: crypt_blowfish32.mli,v 1.1 2001/03/10 16:43:00 gerd Exp $
+(* $Id$
  * ----------------------------------------------------------------------
  * This module is part of the cryptgps package by Gerd Stolpmann.
  *)
@@ -24,11 +24,3 @@ module Cryptmodes : Cryptmodes_64.T with type key = Cryptsystem.key;;
 (* THIS VERSION OF BLOWFISH USES INT32 ARITHMETIC, AND IS EXPERIMENTAL. *)
 
 
-(* ======================================================================
- * History:
- * 
- * $Log: crypt_blowfish32.mli,v $
- * Revision 1.1  2001/03/10 16:43:00  gerd
- * 	Initial revision.
- *
- *)
diff --git a/crypt_des.ml b/crypt_des.ml
index 380128eb3cc62987b3fa0e56cba35bd9fbde2f0e..02bd1b036e30ab4cfff38258ed117efd98b5f880 100644
--- a/crypt_des.ml
+++ b/crypt_des.ml
@@ -1,4 +1,4 @@
-(* $Id: crypt_des.ml,v 1.10 2001/03/10 16:43:21 gerd Exp $
+(* $Id$
  * ----------------------------------------------------------------------
  * This module is part of the cryptgps package by Gerd Stolpmann.
  *)
@@ -835,52 +835,3 @@ module Cryptmodes = Cryptmodes_64.Make_modes(Cryptsystem)
 ;;
 
 
-(* ======================================================================
- * history:
- * 
- * $Log: crypt_des.ml,v $
- * Revision 1.10  2001/03/10 16:43:21  gerd
- * 	int32 experiments
- *
- * Revision 1.9  1999/06/18 00:23:58  gerd
- * 	First release.
- *
- * Revision 1.8  1999/06/17 21:00:31  gerd
- * 	Some additions have been turned into lor operations (faster).
- * 	The Lazy.force calls in the 'des' functions have been avoided.
- *
- * Revision 1.7  1999/06/17 20:39:46  gerd
- * 	The initial iperm and xperm permutations have been combined
- * such that only one table lookup is necessary.
- *
- * Revision 1.6  1999/06/17 20:26:35  gerd
- * 	In previous revisions, in every 'do_rounds' loop cycle the 'xperm'
- * permutation was applied again to convert 32 bit numbers to 48 bit numbers.
- * Now the 'do_rounds' directly works with 48 bit numbers, and 32 bit
- * entites are converted on entry and on exit. Effectively, we have now
- * two 'xperm's and two inverse 'xperm's instead of 16 'xperm's before.
- *
- * Revision 1.5  1999/06/17 19:41:10  gerd
- * 	Logical operations differ in their speed because of Ocaml's
- * integer representation. lor and land are a bit faster than lxor.
- * Because of this I reduced the number of lxor operations.
- *
- * Revision 1.4  1999/06/17 16:51:33  gerd
- * 	The 'xperm' permutation is done by bit-shifting instead of
- * an array lookup.
- *
- * Revision 1.3  1999/06/17 15:57:02  gerd
- * 	Invocations of 'do_perm32', 'do_perm48', and 'do_perm64' have
- * been manually inlined. This speeds the algorithm up from 55 sec per
- * 1MB CBC-encryption to 38 sec.
- *
- * Revision 1.2  1999/06/17 15:24:24  gerd
- * 	Instead of calling 'f' sequently, there is now a loop. This
- * prevents the compiler from inlining the 16 invocations of 'f', which
- * leads to shorter code and MUCH better cache performance.
- *
- * Revision 1.1  1999/06/17 14:55:04  gerd
- * 	Added module for DES.
- *
- * 
- *)
diff --git a/crypt_des.mli b/crypt_des.mli
index 12f1a4014ff118ed6ca6f65743b161ac229e4877..4bf268adc58d8d6a3a0f788e7757be7b28b1512b 100644
--- a/crypt_des.mli
+++ b/crypt_des.mli
@@ -1,4 +1,4 @@
-(* $Id: crypt_des.mli,v 1.1 1999/06/17 14:55:04 gerd Exp $
+(* $Id$
  * ----------------------------------------------------------------------
  * This module is part of the cryptgps package by Gerd Stolpmann.
  *)
@@ -36,11 +36,3 @@ val set_parity : string -> string
  * - There are very few weak keys.
  *)
 
-(* ======================================================================
- * History:
- * 
- * $Log: crypt_des.mli,v $
- * Revision 1.1  1999/06/17 14:55:04  gerd
- * 	Added module for DES.
- *
- *)
diff --git a/cryptmodes_64.ml b/cryptmodes_64.ml
index a27a2116f75feafeb019c7b4b097d386ee90f615..e8528ffe14e6567aa262bd9c6c82c938bfa5352c 100644
--- a/cryptmodes_64.ml
+++ b/cryptmodes_64.ml
@@ -1,4 +1,4 @@
-(* $Id: cryptmodes_64.ml,v 1.2 2001/03/10 16:43:21 gerd Exp $
+(* $Id$
  * ----------------------------------------------------------------------
  * This module is part of the cryptgps package by Gerd Stolpmann.
  *)
@@ -567,15 +567,3 @@ module Make_modes_int32 (M : Cryptsystem_64.T) =
 ;;
 
 
-(* ======================================================================
- * History:
- * 
- * $Log: cryptmodes_64.ml,v $
- * Revision 1.2  2001/03/10 16:43:21  gerd
- * 	int32 experiments
- *
- * Revision 1.1  1999/06/04 20:42:01  gerd
- * 	Initial revision.
- *
- * 
- *)
diff --git a/cryptmodes_64.mli b/cryptmodes_64.mli
index baf3371c9572698f67b4c29727634374bf3787a3..2ceea908e62c2d85db0c7e7cc89d95827fa3fb0e 100644
--- a/cryptmodes_64.mli
+++ b/cryptmodes_64.mli
@@ -1,4 +1,4 @@
-(* $Id: cryptmodes_64.mli,v 1.2 2001/03/10 16:43:21 gerd Exp $
+(* $Id$
  * ----------------------------------------------------------------------
  * This module is part of the cryptgps package by Gerd Stolpmann.
  *)
@@ -213,15 +213,3 @@ module Make_modes_int32 (M : Cryptsystem_64.T) : T with type key = M.key
 
 
 
-(* ======================================================================
- * History:
- * 
- * $Log: cryptmodes_64.mli,v $
- * Revision 1.2  2001/03/10 16:43:21  gerd
- * 	int32 experiments
- *
- * Revision 1.1  1999/06/04 20:42:01  gerd
- * 	Initial revision.
- *
- * 
- *)
diff --git a/cryptsystem_64.ml b/cryptsystem_64.ml
index 75b0849d583ad43ade4d3ba030043cc468cef0f6..574048f0bebf43ebcd831151f32c0d7a995a84dc 100644
--- a/cryptsystem_64.ml
+++ b/cryptsystem_64.ml
@@ -1,4 +1,4 @@
-(* $Id: cryptsystem_64.ml,v 1.2 2001/03/10 16:43:21 gerd Exp $
+(* $Id$
  * ----------------------------------------------------------------------
  * This module is part of the cryptgps package by Gerd Stolpmann.
  *)
@@ -46,15 +46,3 @@ module type T =
                              
 
 
-(* ======================================================================
- * History:
- * 
- * $Log: cryptsystem_64.ml,v $
- * Revision 1.2  2001/03/10 16:43:21  gerd
- * 	int32 experiments
- *
- * Revision 1.1  1999/06/04 20:42:01  gerd
- * 	Initial revision.
- *
- * 
- *)
diff --git a/cryptsystem_64.mli b/cryptsystem_64.mli
index dd98babf57677cf8b9a200faf2d335033c01a0b0..2e62b287404b60aa608caa7c775f3e6dd1c1d008 100644
--- a/cryptsystem_64.mli
+++ b/cryptsystem_64.mli
@@ -1,4 +1,4 @@
-(* $Id: cryptsystem_64.mli,v 1.2 2001/03/10 16:43:21 gerd Exp $
+(* $Id$
  * ----------------------------------------------------------------------
  * This module is part of the cryptgps package by Gerd Stolpmann.
  *)
@@ -73,15 +73,3 @@ module type T =
                              
 
 
-(* ======================================================================
- * History:
- * 
- * $Log: cryptsystem_64.mli,v $
- * Revision 1.2  2001/03/10 16:43:21  gerd
- * 	int32 experiments
- *
- * Revision 1.1  1999/06/04 20:42:01  gerd
- * 	Initial revision.
- *
- * 
- *)