| /* |
| * ASN.1 DER parsing |
| * Copyright (c) 2006, Jouni Malinen <j@w1.fi> |
| * |
| * This software may be distributed under the terms of the BSD license. |
| * See README for more details. |
| */ |
| |
| #ifndef ASN1_H |
| #define ASN1_H |
| |
| #define ASN1_TAG_EOC 0x00 /* not used with DER */ |
| #define ASN1_TAG_BOOLEAN 0x01 |
| #define ASN1_TAG_INTEGER 0x02 |
| #define ASN1_TAG_BITSTRING 0x03 |
| #define ASN1_TAG_OCTETSTRING 0x04 |
| #define ASN1_TAG_NULL 0x05 |
| #define ASN1_TAG_OID 0x06 |
| #define ASN1_TAG_OBJECT_DESCRIPTOR 0x07 /* not yet parsed */ |
| #define ASN1_TAG_EXTERNAL 0x08 /* not yet parsed */ |
| #define ASN1_TAG_REAL 0x09 /* not yet parsed */ |
| #define ASN1_TAG_ENUMERATED 0x0A /* not yet parsed */ |
| #define ASN1_TAG_UTF8STRING 0x0C /* not yet parsed */ |
| #define ANS1_TAG_RELATIVE_OID 0x0D |
| #define ASN1_TAG_SEQUENCE 0x10 /* shall be constructed */ |
| #define ASN1_TAG_SET 0x11 |
| #define ASN1_TAG_NUMERICSTRING 0x12 /* not yet parsed */ |
| #define ASN1_TAG_PRINTABLESTRING 0x13 |
| #define ASN1_TAG_TG1STRING 0x14 /* not yet parsed */ |
| #define ASN1_TAG_VIDEOTEXSTRING 0x15 /* not yet parsed */ |
| #define ASN1_TAG_IA5STRING 0x16 |
| #define ASN1_TAG_UTCTIME 0x17 |
| #define ASN1_TAG_GENERALIZEDTIME 0x18 /* not yet parsed */ |
| #define ASN1_TAG_GRAPHICSTRING 0x19 /* not yet parsed */ |
| #define ASN1_TAG_VISIBLESTRING 0x1A |
| #define ASN1_TAG_GENERALSTRING 0x1B /* not yet parsed */ |
| #define ASN1_TAG_UNIVERSALSTRING 0x1C /* not yet parsed */ |
| #define ASN1_TAG_BMPSTRING 0x1D /* not yet parsed */ |
| |
| #define ASN1_CLASS_UNIVERSAL 0 |
| #define ASN1_CLASS_APPLICATION 1 |
| #define ASN1_CLASS_CONTEXT_SPECIFIC 2 |
| #define ASN1_CLASS_PRIVATE 3 |
| |
| |
| struct asn1_hdr { |
| const u8 *payload; |
| u8 identifier, class, constructed; |
| unsigned int tag, length; |
| }; |
| |
| #define ASN1_MAX_OID_LEN 20 |
| struct asn1_oid { |
| unsigned long oid[ASN1_MAX_OID_LEN]; |
| size_t len; |
| }; |
| |
| |
| int asn1_get_next(const u8 *buf, size_t len, struct asn1_hdr *hdr); |
| int asn1_parse_oid(const u8 *buf, size_t len, struct asn1_oid *oid); |
| int asn1_get_oid(const u8 *buf, size_t len, struct asn1_oid *oid, |
| const u8 **next); |
| void asn1_oid_to_str(struct asn1_oid *oid, char *buf, size_t len); |
| unsigned long asn1_bit_string_to_long(const u8 *buf, size_t len); |
| |
| #endif /* ASN1_H */ |