crypto/openssl/include/internal/der.h

   1 /*
   2  * Copyright 2020-2022 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   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
   8  */
   9
  10 #include <openssl/bn.h>
  11 #include "internal/packet.h"
  12
  13 /*
  14  * NOTE: X.690 numbers the identifier octet bits 1 to 8.
  15  * We use the same numbering in comments here.
  16  */
  17
  18 /* Well known primitive tags */
  19
  20 /*
  21  * DER UNIVERSAL tags, occupying bits 1-5 in the DER identifier byte
  22  * These are only valid for the UNIVERSAL class.  With the other classes,
  23  * these bits have a different meaning.
  24  */
  25 #define DER_P_EOC                       0 /* BER End Of Contents tag */
  26 #define DER_P_BOOLEAN                   1
  27 #define DER_P_INTEGER                   2
  28 #define DER_P_BIT_STRING                3
  29 #define DER_P_OCTET_STRING              4
  30 #define DER_P_NULL                      5
  31 #define DER_P_OBJECT                    6
  32 #define DER_P_OBJECT_DESCRIPTOR         7
  33 #define DER_P_EXTERNAL                  8
  34 #define DER_P_REAL                      9
  35 #define DER_P_ENUMERATED               10
  36 #define DER_P_UTF8STRING               12
  37 #define DER_P_SEQUENCE                 16
  38 #define DER_P_SET                      17
  39 #define DER_P_NUMERICSTRING            18
  40 #define DER_P_PRINTABLESTRING          19
  41 #define DER_P_T61STRING                20
  42 #define DER_P_VIDEOTEXSTRING           21
  43 #define DER_P_IA5STRING                22
  44 #define DER_P_UTCTIME                  23
  45 #define DER_P_GENERALIZEDTIME          24
  46 #define DER_P_GRAPHICSTRING            25
  47 #define DER_P_ISO64STRING              26
  48 #define DER_P_GENERALSTRING            27
  49 #define DER_P_UNIVERSALSTRING          28
  50 #define DER_P_BMPSTRING                30
  51
  52 /* DER Flags, occupying bit 6 in the DER identifier byte */
  53 #define DER_F_PRIMITIVE              0x00
  54 #define DER_F_CONSTRUCTED            0x20
  55
  56 /* DER classes tags, occupying bits 7-8 in the DER identifier byte */
  57 #define DER_C_UNIVERSAL              0x00
  58 #define DER_C_APPLICATION            0x40
  59 #define DER_C_CONTEXT                0x80
  60 #define DER_C_PRIVATE                0xC0
  61
  62 /*
  63  * Run-time constructors.
  64  *
  65  * They all construct DER backwards, so care should be taken to use them
  66  * that way.
  67  */
  68
  69 /* This can be used for all items that don't have a context */
  70 #define DER_NO_CONTEXT  -1
  71
  72 int ossl_DER_w_precompiled(WPACKET *pkt, int tag,
  73                            const unsigned char *precompiled,
  74                            size_t precompiled_n);
  75
  76 int ossl_DER_w_boolean(WPACKET *pkt, int tag, int b);
  77 int ossl_DER_w_uint32(WPACKET *pkt, int tag, uint32_t v);
  78 int ossl_DER_w_bn(WPACKET *pkt, int tag, const BIGNUM *v);
  79 int ossl_DER_w_null(WPACKET *pkt, int tag);
  80 int ossl_DER_w_octet_string(WPACKET *pkt, int tag,
  81                             const unsigned char *data, size_t data_n);
  82 int ossl_DER_w_octet_string_uint32(WPACKET *pkt, int tag, uint32_t value);
  83
  84 /*
  85  * All constructors for constructed elements have a begin and a end function
  86  */
  87 int ossl_DER_w_begin_sequence(WPACKET *pkt, int tag);
  88 int ossl_DER_w_end_sequence(WPACKET *pkt, int tag);