$search
00001 /* 00002 * ASN.1 DER parsing 00003 * Copyright (c) 2006, Jouni Malinen <j@w1.fi> 00004 * 00005 * This program is free software; you can redistribute it and/or modify 00006 * it under the terms of the GNU General Public License version 2 as 00007 * published by the Free Software Foundation. 00008 * 00009 * Alternatively, this software may be distributed under the terms of BSD 00010 * license. 00011 * 00012 * See README and COPYING for more details. 00013 */ 00014 00015 #ifndef ASN1_H 00016 #define ASN1_H 00017 00018 #define ASN1_TAG_EOC 0x00 /* not used with DER */ 00019 #define ASN1_TAG_BOOLEAN 0x01 00020 #define ASN1_TAG_INTEGER 0x02 00021 #define ASN1_TAG_BITSTRING 0x03 00022 #define ASN1_TAG_OCTETSTRING 0x04 00023 #define ASN1_TAG_NULL 0x05 00024 #define ASN1_TAG_OID 0x06 00025 #define ASN1_TAG_OBJECT_DESCRIPTOR 0x07 /* not yet parsed */ 00026 #define ASN1_TAG_EXTERNAL 0x08 /* not yet parsed */ 00027 #define ASN1_TAG_REAL 0x09 /* not yet parsed */ 00028 #define ASN1_TAG_ENUMERATED 0x0A /* not yet parsed */ 00029 #define ASN1_TAG_UTF8STRING 0x0C /* not yet parsed */ 00030 #define ANS1_TAG_RELATIVE_OID 0x0D 00031 #define ASN1_TAG_SEQUENCE 0x10 /* shall be constructed */ 00032 #define ASN1_TAG_SET 0x11 00033 #define ASN1_TAG_NUMERICSTRING 0x12 /* not yet parsed */ 00034 #define ASN1_TAG_PRINTABLESTRING 0x13 00035 #define ASN1_TAG_TG1STRING 0x14 /* not yet parsed */ 00036 #define ASN1_TAG_VIDEOTEXSTRING 0x15 /* not yet parsed */ 00037 #define ASN1_TAG_IA5STRING 0x16 00038 #define ASN1_TAG_UTCTIME 0x17 00039 #define ASN1_TAG_GENERALIZEDTIME 0x18 /* not yet parsed */ 00040 #define ASN1_TAG_GRAPHICSTRING 0x19 /* not yet parsed */ 00041 #define ASN1_TAG_VISIBLESTRING 0x1A 00042 #define ASN1_TAG_GENERALSTRING 0x1B /* not yet parsed */ 00043 #define ASN1_TAG_UNIVERSALSTRING 0x1C /* not yet parsed */ 00044 #define ASN1_TAG_BMPSTRING 0x1D /* not yet parsed */ 00045 00046 #define ASN1_CLASS_UNIVERSAL 0 00047 #define ASN1_CLASS_APPLICATION 1 00048 #define ASN1_CLASS_CONTEXT_SPECIFIC 2 00049 #define ASN1_CLASS_PRIVATE 3 00050 00051 00052 struct asn1_hdr { 00053 const u8 *payload; 00054 u8 identifier, class, constructed; 00055 unsigned int tag, length; 00056 }; 00057 00058 #define ASN1_MAX_OID_LEN 20 00059 struct asn1_oid { 00060 unsigned long oid[ASN1_MAX_OID_LEN]; 00061 size_t len; 00062 }; 00063 00064 00065 int asn1_get_next(const u8 *buf, size_t len, struct asn1_hdr *hdr); 00066 int asn1_parse_oid(const u8 *buf, size_t len, struct asn1_oid *oid); 00067 int asn1_get_oid(const u8 *buf, size_t len, struct asn1_oid *oid, 00068 const u8 **next); 00069 void asn1_oid_to_str(struct asn1_oid *oid, char *buf, size_t len); 00070 unsigned long asn1_bit_string_to_long(const u8 *buf, size_t len); 00071 00072 #endif /* ASN1_H */