| Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | * ASN.1 DER parsing |
| 3 | * Copyright (c) 2006, Jouni Malinen <j@w1.fi> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License version 2 as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * Alternatively, this software may be distributed under the terms of BSD |
| 10 | * license. |
| 11 | * |
| 12 | * See README and COPYING for more details. |
| 13 | */ |
| 14 | |
| 15 | #ifndef ASN1_H |
| 16 | #define ASN1_H |
| 17 | |
| 18 | #define ASN1_TAG_EOC 0x00 /* not used with DER */ |
| 19 | #define ASN1_TAG_BOOLEAN 0x01 |
| 20 | #define ASN1_TAG_INTEGER 0x02 |
| 21 | #define ASN1_TAG_BITSTRING 0x03 |
| 22 | #define ASN1_TAG_OCTETSTRING 0x04 |
| 23 | #define ASN1_TAG_NULL 0x05 |
| 24 | #define ASN1_TAG_OID 0x06 |
| 25 | #define ASN1_TAG_OBJECT_DESCRIPTOR 0x07 /* not yet parsed */ |
| 26 | #define ASN1_TAG_EXTERNAL 0x08 /* not yet parsed */ |
| 27 | #define ASN1_TAG_REAL 0x09 /* not yet parsed */ |
| 28 | #define ASN1_TAG_ENUMERATED 0x0A /* not yet parsed */ |
| 29 | #define ASN1_TAG_UTF8STRING 0x0C /* not yet parsed */ |
| 30 | #define ANS1_TAG_RELATIVE_OID 0x0D |
| 31 | #define ASN1_TAG_SEQUENCE 0x10 /* shall be constructed */ |
| 32 | #define ASN1_TAG_SET 0x11 |
| 33 | #define ASN1_TAG_NUMERICSTRING 0x12 /* not yet parsed */ |
| 34 | #define ASN1_TAG_PRINTABLESTRING 0x13 |
| 35 | #define ASN1_TAG_TG1STRING 0x14 /* not yet parsed */ |
| 36 | #define ASN1_TAG_VIDEOTEXSTRING 0x15 /* not yet parsed */ |
| 37 | #define ASN1_TAG_IA5STRING 0x16 |
| 38 | #define ASN1_TAG_UTCTIME 0x17 |
| 39 | #define ASN1_TAG_GENERALIZEDTIME 0x18 /* not yet parsed */ |
| 40 | #define ASN1_TAG_GRAPHICSTRING 0x19 /* not yet parsed */ |
| 41 | #define ASN1_TAG_VISIBLESTRING 0x1A |
| 42 | #define ASN1_TAG_GENERALSTRING 0x1B /* not yet parsed */ |
| 43 | #define ASN1_TAG_UNIVERSALSTRING 0x1C /* not yet parsed */ |
| 44 | #define ASN1_TAG_BMPSTRING 0x1D /* not yet parsed */ |
| 45 | |
| 46 | #define ASN1_CLASS_UNIVERSAL 0 |
| 47 | #define ASN1_CLASS_APPLICATION 1 |
| 48 | #define ASN1_CLASS_CONTEXT_SPECIFIC 2 |
| 49 | #define ASN1_CLASS_PRIVATE 3 |
| 50 | |
| 51 | |
| 52 | struct asn1_hdr { |
| 53 | const u8 *payload; |
| 54 | u8 identifier, class, constructed; |
| 55 | unsigned int tag, length; |
| 56 | }; |
| 57 | |
| 58 | #define ASN1_MAX_OID_LEN 20 |
| 59 | struct asn1_oid { |
| 60 | unsigned long oid[ASN1_MAX_OID_LEN]; |
| 61 | size_t len; |
| 62 | }; |
| 63 | |
| 64 | |
| 65 | int asn1_get_next(const u8 *buf, size_t len, struct asn1_hdr *hdr); |
| 66 | int asn1_parse_oid(const u8 *buf, size_t len, struct asn1_oid *oid); |
| 67 | int asn1_get_oid(const u8 *buf, size_t len, struct asn1_oid *oid, |
| 68 | const u8 **next); |
| 69 | void asn1_oid_to_str(struct asn1_oid *oid, char *buf, size_t len); |
| 70 | unsigned long asn1_bit_string_to_long(const u8 *buf, size_t len); |
| 71 | |
| 72 | #endif /* ASN1_H */ |