2 * Copyright 2020-2022 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 #ifndef OSSL_INTERNAL_DER_H
11 # define OSSL_INTERNAL_DER_H
14 # include <openssl/bn.h>
15 # include "internal/packet.h"
18 * NOTE: X.690 numbers the identifier octet bits 1 to 8.
19 * We use the same numbering in comments here.
22 /* Well known primitive tags */
25 * DER UNIVERSAL tags, occupying bits 1-5 in the DER identifier byte
26 * These are only valid for the UNIVERSAL class. With the other classes,
27 * these bits have a different meaning.
29 # define DER_P_EOC 0 /* BER End Of Contents tag */
30 # define DER_P_BOOLEAN 1
31 # define DER_P_INTEGER 2
32 # define DER_P_BIT_STRING 3
33 # define DER_P_OCTET_STRING 4
35 # define DER_P_OBJECT 6
36 # define DER_P_OBJECT_DESCRIPTOR 7
37 # define DER_P_EXTERNAL 8
39 # define DER_P_ENUMERATED 10
40 # define DER_P_UTF8STRING 12
41 # define DER_P_SEQUENCE 16
43 # define DER_P_NUMERICSTRING 18
44 # define DER_P_PRINTABLESTRING 19
45 # define DER_P_T61STRING 20
46 # define DER_P_VIDEOTEXSTRING 21
47 # define DER_P_IA5STRING 22
48 # define DER_P_UTCTIME 23
49 # define DER_P_GENERALIZEDTIME 24
50 # define DER_P_GRAPHICSTRING 25
51 # define DER_P_ISO64STRING 26
52 # define DER_P_GENERALSTRING 27
53 # define DER_P_UNIVERSALSTRING 28
54 # define DER_P_BMPSTRING 30
56 /* DER Flags, occupying bit 6 in the DER identifier byte */
57 # define DER_F_PRIMITIVE 0x00
58 # define DER_F_CONSTRUCTED 0x20
60 /* DER classes tags, occupying bits 7-8 in the DER identifier byte */
61 # define DER_C_UNIVERSAL 0x00
62 # define DER_C_APPLICATION 0x40
63 # define DER_C_CONTEXT 0x80
64 # define DER_C_PRIVATE 0xC0
67 * Run-time constructors.
69 * They all construct DER backwards, so care should be taken to use them
73 /* This can be used for all items that don't have a context */
74 # define DER_NO_CONTEXT -1
76 int ossl_DER_w_precompiled(WPACKET *pkt, int tag,
77 const unsigned char *precompiled,
78 size_t precompiled_n);
80 int ossl_DER_w_boolean(WPACKET *pkt, int tag, int b);
81 int ossl_DER_w_uint32(WPACKET *pkt, int tag, uint32_t v);
82 int ossl_DER_w_bn(WPACKET *pkt, int tag, const BIGNUM *v);
83 int ossl_DER_w_null(WPACKET *pkt, int tag);
84 int ossl_DER_w_octet_string(WPACKET *pkt, int tag,
85 const unsigned char *data, size_t data_n);
86 int ossl_DER_w_octet_string_uint32(WPACKET *pkt, int tag, uint32_t value);
89 * All constructors for constructed elements have a begin and a end function
91 int ossl_DER_w_begin_sequence(WPACKET *pkt, int tag);
92 int ossl_DER_w_end_sequence(WPACKET *pkt, int tag);