From vincent.torri at gmail.com  Sat Nov  5 10:51:29 2011
From: vincent.torri at gmail.com (Vincent Torri)
Date: Sat, 5 Nov 2011 10:51:29 +0100
Subject: native support of Windows mutex in libgcrypt planned ?
Message-ID: <CAMq1adpynDz8qN7kwgGd0FF5sdivYwB6pkp5v7eD5r_Q7447dw@mail.gmail.com>

Hey

afaics in the libgcrypt code, only pthread or gnu pth is used for mutexes.
Is it possible to add Windows functions for mutexes ?

thank you

Vincent Torri
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From wk at gnupg.org  Sun Nov  6 17:33:51 2011
From: wk at gnupg.org (Werner Koch)
Date: Sun, 06 Nov 2011 17:33:51 +0100
Subject: native support of Windows mutex in libgcrypt planned ?
In-Reply-To: <CAMq1adpynDz8qN7kwgGd0FF5sdivYwB6pkp5v7eD5r_Q7447dw@mail.gmail.com>
	(Vincent Torri's message of "Sat, 5 Nov 2011 10:51:29 +0100")
References: <CAMq1adpynDz8qN7kwgGd0FF5sdivYwB6pkp5v7eD5r_Q7447dw@mail.gmail.com>
Message-ID: <87sjm1b47k.fsf@vigenere.g10code.de>

On Sat,  5 Nov 2011 10:51, vincent.torri at gmail.com said:

> afaics in the libgcrypt code, only pthread or gnu pth is used for mutexes.
> Is it possible to add Windows functions for mutexes ?

You may provide your own callbacks.  Take the
GCRY_THREAD_OPTION_PTHREAD_IMPL has a template and use
GCRY_THREAD_OPTION_USER.

The forthcoming Libgcrypt 1.6. will use the system's native thread
implementation by default.


Shalom-Salam,

   Werner

-- 
Die Gedanken sind frei.  Ausnahmen regelt ein Bundesgesetz.



From vincent.torri at gmail.com  Sun Nov  6 19:55:53 2011
From: vincent.torri at gmail.com (Vincent Torri)
Date: Sun, 6 Nov 2011 19:55:53 +0100
Subject: native support of Windows mutex in libgcrypt planned ?
In-Reply-To: <87sjm1b47k.fsf@vigenere.g10code.de>
References: <CAMq1adpynDz8qN7kwgGd0FF5sdivYwB6pkp5v7eD5r_Q7447dw@mail.gmail.com>
	<87sjm1b47k.fsf@vigenere.g10code.de>
Message-ID: <CAMq1adq4fZFTCsuJLnzKokFTrnHAdDrdC6LYQpvZEnu=Zg=n0Q@mail.gmail.com>

On Sun, Nov 6, 2011 at 5:33 PM, Werner Koch <wk at gnupg.org> wrote:

> On Sat,  5 Nov 2011 10:51, vincent.torri at gmail.com said:
>
> > afaics in the libgcrypt code, only pthread or gnu pth is used for
> mutexes.
> > Is it possible to add Windows functions for mutexes ?
>
> You may provide your own callbacks.  Take the
> GCRY_THREAD_OPTION_PTHREAD_IMPL has a template and use
> GCRY_THREAD_OPTION_USER.
>
> The forthcoming Libgcrypt 1.6. will use the system's native thread
> implementation by default.
>

I searched in the latest source code without finding any Win32 calls (like
CreateMutex). Or maybe i didn't understand your remark ?

Vincent Torri
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From wk at gnupg.org  Sun Nov  6 20:51:48 2011
From: wk at gnupg.org (Werner Koch)
Date: Sun, 06 Nov 2011 20:51:48 +0100
Subject: native support of Windows mutex in libgcrypt planned ?
In-Reply-To: <CAMq1adq4fZFTCsuJLnzKokFTrnHAdDrdC6LYQpvZEnu=Zg=n0Q@mail.gmail.com>
	(Vincent Torri's message of "Sun, 6 Nov 2011 19:55:53 +0100")
References: <CAMq1adpynDz8qN7kwgGd0FF5sdivYwB6pkp5v7eD5r_Q7447dw@mail.gmail.com>
	<87sjm1b47k.fsf@vigenere.g10code.de>
	<CAMq1adq4fZFTCsuJLnzKokFTrnHAdDrdC6LYQpvZEnu=Zg=n0Q@mail.gmail.com>
Message-ID: <87hb2hav1n.fsf@vigenere.g10code.de>

On Sun,  6 Nov 2011 19:55, vincent.torri at gmail.com said:

> I searched in the latest source code without finding any Win32 calls (like
> CreateMutex). Or maybe i didn't understand your remark ?

The latest source is under development and has currently no support for
Windows; I am talking about the stable version: Did you read the section
on multi threading and the required thread callbacks in the manual?
There you find this remark:

  Libgcrypt contains convenient macros, which define the
  necessary thread callbacks for PThread and for GNU Pth:

If you now need a different threading system (i.e. for W32), you may
write such a macro or simply init the the thread callbacks structure
directly.


Shalom-Salam,

   Werner

-- 
Die Gedanken sind frei.  Ausnahmen regelt ein Bundesgesetz.



From ben.guthro at virtualcomputer.com  Wed Nov 30 22:59:36 2011
From: ben.guthro at virtualcomputer.com (Ben Guthro)
Date: Wed, 30 Nov 2011 16:59:36 -0500
Subject: [PATCH] Add ability to save/load an md5 checkpoint file
Message-ID: <4ED6A748.1030702@virtualcomputer.com>

For large encryption streams - it can be convenient to write a checkpoint file, 
to be able to be able to resume later.

This implements save/load of md5 checkpoints

Signed-off-by: Ben Guthro <ben.guthro at virtualcomputer.com>

diff --git a/cipher/md.c b/cipher/md.c
index 5ae9aee..7f3115f 100644
--- a/cipher/md.c
+++ b/cipher/md.c
@@ -1315,6 +1315,46 @@ gcry_md_is_enabled (gcry_md_hd_t a, int algo)
   return value;
 }
 
+int
+gcry_save_md5_checkpoint(FILE *f, gcry_md_hd_t *hd)
+{
+	GcryDigestEntry *entry;
+	int n;
+
+	n = (*hd)->ctx->actual_handle_size - sizeof (struct gcry_md_context);
+	if (fwrite(*hd, n, 1, f) != 1)
+		return (-1);
+	entry = (*hd)->ctx->list;
+	if (fwrite(entry->context.c, entry->digest->contextsize, 1, f) != 1)
+		return (-1);
+
+	return (0);
+}
+
+int
+gcry_load_md5_checkpoint(FILE *f, gcry_md_hd_t *hd)
+{
+	GcryDigestEntry *entry;
+	void *ctx;
+	int n;
+
+	gcry_md_open(hd, GCRY_MD_MD5, 0);
+	/* see comment above in md_open() for description of layout */
+	ctx = (*hd)->ctx;
+	n = (*hd)->ctx->actual_handle_size - sizeof (struct gcry_md_context);
+	if (fread(*hd, n, 1, f) != 1)
+		goto fail;
+	(*hd)->ctx = ctx;
+	entry = (*hd)->ctx->list;
+	if (fread(entry->context.c, entry->digest->contextsize, 1, f) != 1)
+		goto fail;
+
+	return (0);
+fail:
+	gcry_md_close(*hd);
+	return (-1);
+}
+
 
 /* Run the selftests for digest algorithm ALGO with optional reporting
    function REPORT.  */
diff --git a/src/gcrypt.h.in b/src/gcrypt.h.in
index b34ff08..565b5d3 100644
--- a/src/gcrypt.h.in
+++ b/src/gcrypt.h.in
@@ -22,6 +22,7 @@
 #ifndef _GCRYPT_H
 #define _GCRYPT_H
 
+#include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
 #include <string.h>
@@ -1444,6 +1445,8 @@ int gcry_is_secure (const void *a) _GCRY_GCC_ATTR_PURE;
 /* Return true if Libgcrypt is in FIPS mode.  */
 #define gcry_fips_mode_active()  !!gcry_control (GCRYCTL_FIPS_MODE_P, 0)
 
+int gcry_save_md5_checkpoint(FILE *f, gcry_md_hd_t *hd);
+int gcry_load_md5_checkpoint(FILE *f, gcry_md_hd_t *hd);
 
 #if 0 /* (Keep Emacsens' auto-indent happy.) */
 {
diff --git a/src/libgcrypt.def b/src/libgcrypt.def
index 9bf0167..93a3ba1 100644
--- a/src/libgcrypt.def
+++ b/src/libgcrypt.def
@@ -211,3 +211,6 @@ EXPORTS
       gcry_pk_get_param     @193
 
       gcry_kdf_derive       @194
+
+      gcry_save_md5_checkpoint   @195
+      gcry_load_md5_checkpoint   @196
diff --git a/src/libgcrypt.vers b/src/libgcrypt.vers
index dcb3749..7f32a7d 100644
--- a/src/libgcrypt.vers
+++ b/src/libgcrypt.vers
@@ -88,6 +88,8 @@ GCRYPT_1.6 {
     gcry_mpi_subm; gcry_mpi_swap; gcry_mpi_test_bit;
     gcry_mpi_lshift;
 
+    gcry_save_md5_checkpoint; gcry_load_md5_checkpoint;
+
   local:
     *;
 
diff --git a/src/visibility.c b/src/visibility.c
index 2d3edbc..3ec73c3 100644
--- a/src/visibility.c
+++ b/src/visibility.c
@@ -1144,3 +1144,15 @@ gcry_is_secure (const void *a)
 {
   return _gcry_is_secure (a);
 }
+
+int
+gcry_save_md5_checkpoint(FILE *f, gcry_md_hd_t *hd)
+{
+	_gcry_save_md5_checkpoint(f, hd);
+}
+
+int
+gcry_load_md5_checkpoint(FILE *f, gcry_md_hd_t *hd)
+{
+	_gcry_load_md5_checkpoint(f, hd);
+}
diff --git a/src/visibility.h b/src/visibility.h
index 4606a20..dc7ec77 100644
--- a/src/visibility.h
+++ b/src/visibility.h
@@ -185,6 +185,8 @@
 #define gcry_mpi_swap               _gcry_mpi_swap
 #define gcry_mpi_test_bit           _gcry_mpi_test_bit
 
+#define gcry_save_md5_checkpoint    _gcry_save_md5_checkpoint
+#define gcry_load_md5_checkpoint    _gcry_load_md5_checkpoint
 
 /* Include the main header here so that public symbols are mapped to
    the internal underscored ones.  */
@@ -390,7 +392,8 @@ gcry_err_code_t gcry_md_get (gcry_md_hd_t hd, int algo,
 #undef gcry_mpi_subm
 #undef gcry_mpi_swap
 #undef gcry_mpi_test_bit
-
+#undef gcry_save_md5_checkpoint
+#undef gcry_load_md5_checkpoint
 
 /* Now mark all symbols.  */
 
@@ -557,7 +560,8 @@ MARK_VISIBLE (gcry_mpi_subm)
 MARK_VISIBLE (gcry_mpi_swap)
 MARK_VISIBLE (gcry_mpi_test_bit)
 
-
+MARK_VISIBLE (gcry_save_md5_checkpoint)
+MARK_VISIBLE (gcry_load_md5_checkpoint)
 
 #undef MARK_VISIBLE
 #endif /*_GCRY_INCLUDED_BY_VISIBILITY_C*/