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Diffstat (limited to 'security/nss/lib/util/secdert.h')
| -rw-r--r-- | security/nss/lib/util/secdert.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/security/nss/lib/util/secdert.h b/security/nss/lib/util/secdert.h new file mode 100644 index 000000000..de67eafe1 --- /dev/null +++ b/security/nss/lib/util/secdert.h @@ -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_ */ |