Some changes to suport g13.

2025-07-02 22:46:30 +02:00 · 2009-09-30 15:28:38 +00:00 · 2009-09-30 15:28:38 +00:00 · 27c1b4bef8
commit 27c1b4bef8
parent c11c23b6ac
37 changed files with 2069 additions and 324 deletions
--- a/g13/keyblob.h
+++ b/g13/keyblob.h
@ -0,0 +1,126 @@
+/* keyblob.h - Defs to describe a keyblob
+ * Copyright (C) 2009 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef G13_KEYBLOB_H
+#define G13_KEYBLOB_H
+
+/* The header block is the actual core of G13.  Here is the format:
+
+   u8   Packet type.  Value is 61 (0x3d).
+   u8   Constant value 255 (0xff).
+   u32  Length of the following structure
+          b10  Value: "GnuPG/G13\x00".
+          u8   Version.  Value is 1.
+          u8   reserved
+          u8   reserved
+          u8   OS Flag:  reserved, should be 0.
+          u32  Length of the entire header.  This includes all bytes
+               starting at the packet type and ending with the last
+               padding byte of the header.
+          u8   Number of copies of this header (1..255). 
+          u8   Number of copies of this header at the end of the 
+               container (usually 0).
+          b6   reserved
+   n bytes: OpenPGP encrypted and optionally signed message.
+   n bytes: CMS encrypted and optionally signed packet.  Such a CMS
+            packet will be enclosed in a a private flagged OpenPGP
+            packet.  Either the OpenPGP encrypted packet as described
+            above, the CMS encrypted or both packets must exist.  The
+            encapsulation packet has this structure:
+                u8   Packet type.  Value is 61 (0x3d).
+                u8   Constant value 255 (0xff).
+                u32  Length of the following structure
+                b10  Value: "GnuPG/CMS\x00".
+                b(n) Regular CMS structure.
+   n bytes: Padding. The structure resembles an OpenPGP packet.
+                u8   Packet type.  Value is 61 (0x3d).
+                u8   Constant value 255 (0xff).
+                u32  Length of the following structure
+                b10  Value: "GnuPG/PAD\x00".
+                b(n) Padding stuff.
+            Given this structure the minimum padding is 16 bytes.
+   
+   n bytes: File system container.
+   (optionally followed by copies on the header).
+*/
+
+
+#define KEYBLOB_TAG_BLOBVERSION 0
+/* This tag is used to describe the version of the keyblob.  It must
+   be the first tag in a keyblob.  Its value is a single byte giving
+   the blob version.  The current version is 1.  */
+
+#define KEYBLOB_TAG_CONTTYPE 1
+/* This tag gives the type of the container.  The value is a two byte
+   big endian integer giving the type of the container as described by
+   the CONTTYPE_ constants.  */
+
+#define KEYBLOB_TAG_DETACHED 2
+/* Indicates that the actual storage is not in the same file as the
+   keyblob.  If a value is given it is expected to be the GUID of the
+   partition.  */
+
+#define KEYBLOB_TAG_KEYNO  16
+/* This tag indicates a new key.  The value is a 4 byte big endian
+   integer giving the key number.  If the container type does only
+   need one key this key number should be 0.  */
+
+#define KEYBLOB_TAG_ENCALGO  17
+/* Describes the algorithm of the key.  It must follow a KEYNO tag.
+   The value is a 2 byte big endian algorithm number.  The algorithm
+   numbers used are those from Libgcrypt (e.g. AES 128 is described by
+   the value 7).  This tag is optional.  */
+
+#define KEYBLOB_TAG_ENCKEY  18
+/* This tag gives the actual encryption key.  It must follow a KEYNO
+   tag.  The value is the plain key.  */
+
+#define KEYBLOB_TAG_MACALGO  19
+/* Describes the MAC algorithm.  It must follow a KEYNO tag.  The
+   value is a 2 byte big endian algorithm number describing the MAC
+   algorithm with a value of 1 indicating HMAC.  It is followed by
+   data specific to the MAC algorithm.  In case of HMAC this data is a
+   2 byte big endian integer with the Libgcrypt algorithm id of the
+   hash algorithm.  */
+
+#define KEYBLOB_TAG_MACKEY  20
+/* This tag gives the actual MACing key.  It must follow a KEYNO tag.
+   The value is the key used for MACing.  */
+
+
+#define KEYBLOB_TAG_FILLER   0xffff
+/* This tag may be used for alignment and padding porposes.  The value
+   has no meaning.  */
+
+
+
+#define CONTTYPE_ENCFS      1
+/* A EncFS based backend.  This requires a whole directory which
+   includes the encrypted files.  Metadata is not encrypted.  */
+
+
+#define CONTTYPE_TRUECRYPT  21571
+/* A Truecrypt (www.truecrypt.org) based container.  Due to the design
+   of truecrypt this requires a second datafile because it is not
+   possible to to prepend a truecrypt container with our keyblob.  */
+
+
+
+
+#endif /*G13_KEYBLOB_H*/