--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nss/lib/util/secdert.h	Mon Jul 28 10:47:06 2014 +0200
@@ -0,0 +1,129 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef _SECDERT_H_
+#define _SECDERT_H_
+/*
+ * secdert.h - public data structures for the DER encoding and
+ *	       decoding utilities library
+ */
+
+#include "utilrename.h"
+#include "seccomon.h"
+
+typedef struct DERTemplateStr DERTemplate;
+
+/*
+** An array of these structures defines an encoding for an object using DER.
+** The array usually starts with a dummy entry whose kind is DER_SEQUENCE;
+** such an array is terminated with an entry where kind == 0.  (An array
+** which consists of a single component does not require a second dummy
+** entry -- the array is only searched as long as previous component(s)
+** instruct it.)
+*/
+struct DERTemplateStr {
+    /*
+    ** Kind of item being decoded/encoded, including tags and modifiers.
+    */
+    unsigned long kind;
+
+    /*
+    ** Offset from base of structure to field that holds the value
+    ** being decoded/encoded.
+    */
+    unsigned int offset;
+
+    /*
+    ** When kind suggests it (DER_POINTER, DER_INDEFINITE, DER_INLINE),
+    ** this points to a sub-template for nested encoding/decoding.
+    */
+    DERTemplate *sub;
+
+    /*
+    ** Argument value, dependent on "kind" and/or template placement
+    ** within an array of templates:
+    **	- In the first element of a template array, the value is the
+    **	  size of the structure to allocate when this template is being
+    **	  referenced by another template via DER_POINTER or DER_INDEFINITE.
+    **  - In a component of a DER_SET or DER_SEQUENCE which is *not* a
+    **	  DER_UNIVERSAL type (that is, it has a class tag for either
+    **	  DER_APPLICATION, DER_CONTEXT_SPECIFIC, or DER_PRIVATE), the
+    **	  value is the underlying type of item being decoded/encoded.
+    */
+    unsigned long arg;
+};
+
+/************************************************************************/
+
+/* default chunksize for arenas used for DER stuff */
+#define DER_DEFAULT_CHUNKSIZE (2048)
+
+/*
+** BER/DER values for ASN.1 identifier octets.
+*/
+#define DER_TAG_MASK		0xff
+
+/*
+ * BER/DER universal type tag numbers.
+ * The values are defined by the X.208 standard; do not change them!
+ * NOTE: if you add anything to this list, you must add code to derdec.c
+ * to accept the tag, and probably also to derenc.c to encode it.
+ */
+#define DER_TAGNUM_MASK		0x1f
+#define DER_BOOLEAN		0x01
+#define DER_INTEGER		0x02
+#define DER_BIT_STRING		0x03
+#define DER_OCTET_STRING	0x04
+#define DER_NULL		0x05
+#define DER_OBJECT_ID		0x06
+#define DER_SEQUENCE		0x10
+#define DER_SET			0x11
+#define DER_PRINTABLE_STRING	0x13
+#define DER_T61_STRING		0x14
+#define DER_IA5_STRING		0x16
+#define DER_UTC_TIME		0x17
+#define DER_VISIBLE_STRING	0x1a
+#define DER_HIGH_TAG_NUMBER	0x1f
+
+/*
+** Modifiers to type tags.  These are also specified by a/the
+** standard, and must not be changed.
+*/
+
+#define DER_METHOD_MASK		0x20
+#define DER_PRIMITIVE		0x00
+#define DER_CONSTRUCTED		0x20
+
+#define DER_CLASS_MASK		0xc0
+#define DER_UNIVERSAL		0x00
+#define DER_APPLICATION		0x40
+#define DER_CONTEXT_SPECIFIC	0x80
+#define DER_PRIVATE		0xc0
+
+/*
+** Our additions, used for templates.
+** These are not defined by any standard; the values are used internally only.
+** Just be careful to keep them out of the low 8 bits.
+*/
+#define DER_OPTIONAL		0x00100
+#define DER_EXPLICIT		0x00200
+#define DER_ANY			0x00400
+#define DER_INLINE		0x00800
+#define DER_POINTER		0x01000
+#define DER_INDEFINITE		0x02000
+#define DER_DERPTR		0x04000
+#define DER_SKIP		0x08000
+#define DER_FORCE		0x10000
+#define DER_OUTER		0x40000 /* for DER_DERPTR */
+
+/*
+** Macro to convert der decoded bit string into a decoded octet
+** string. All it needs to do is fiddle with the length code.
+*/
+#define DER_ConvertBitString(item)	  \
+{					  \
+    (item)->len = ((item)->len + 7) >> 3; \
+}
+
+#endif /* _SECDERT_H_ */