/* * 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_EMBEDDED_PDV 0x0B /* 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_CHARACTERSTRING 0x1D /* not yet parsed */ #define ASN1_TAG_BMPSTRING 0x1E /* 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(const struct asn1_oid *oid, char *buf, size_t len); unsigned long asn1_bit_string_to_long(const u8 *buf, size_t len); int asn1_oid_equal(const struct asn1_oid *a, const struct asn1_oid *b); extern struct asn1_oid asn1_sha1_oid; extern struct asn1_oid asn1_sha256_oid; #endif /* ASN1_H */ |