| 1 | /*
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| 2 | * Copyright 2020-2022 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <openssl/bn.h>
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| 11 | #include "internal/packet.h"
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| 12 |
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| 13 | /*
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| 14 | * NOTE: X.690 numbers the identifier octet bits 1 to 8.
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| 15 | * We use the same numbering in comments here.
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| 16 | */
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| 17 |
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| 18 | /* Well known primitive tags */
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| 19 |
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| 20 | /*
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| 21 | * DER UNIVERSAL tags, occupying bits 1-5 in the DER identifier byte
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| 22 | * These are only valid for the UNIVERSAL class. With the other classes,
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| 23 | * these bits have a different meaning.
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| 24 | */
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| 25 | #define DER_P_EOC 0 /* BER End Of Contents tag */
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| 26 | #define DER_P_BOOLEAN 1
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| 27 | #define DER_P_INTEGER 2
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| 28 | #define DER_P_BIT_STRING 3
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| 29 | #define DER_P_OCTET_STRING 4
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| 30 | #define DER_P_NULL 5
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| 31 | #define DER_P_OBJECT 6
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| 32 | #define DER_P_OBJECT_DESCRIPTOR 7
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| 33 | #define DER_P_EXTERNAL 8
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| 34 | #define DER_P_REAL 9
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| 35 | #define DER_P_ENUMERATED 10
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| 36 | #define DER_P_UTF8STRING 12
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| 37 | #define DER_P_SEQUENCE 16
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| 38 | #define DER_P_SET 17
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| 39 | #define DER_P_NUMERICSTRING 18
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| 40 | #define DER_P_PRINTABLESTRING 19
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| 41 | #define DER_P_T61STRING 20
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| 42 | #define DER_P_VIDEOTEXSTRING 21
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| 43 | #define DER_P_IA5STRING 22
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| 44 | #define DER_P_UTCTIME 23
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| 45 | #define DER_P_GENERALIZEDTIME 24
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| 46 | #define DER_P_GRAPHICSTRING 25
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| 47 | #define DER_P_ISO64STRING 26
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| 48 | #define DER_P_GENERALSTRING 27
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| 49 | #define DER_P_UNIVERSALSTRING 28
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| 50 | #define DER_P_BMPSTRING 30
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| 51 |
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| 52 | /* DER Flags, occupying bit 6 in the DER identifier byte */
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| 53 | #define DER_F_PRIMITIVE 0x00
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| 54 | #define DER_F_CONSTRUCTED 0x20
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| 55 |
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| 56 | /* DER classes tags, occupying bits 7-8 in the DER identifier byte */
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| 57 | #define DER_C_UNIVERSAL 0x00
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| 58 | #define DER_C_APPLICATION 0x40
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| 59 | #define DER_C_CONTEXT 0x80
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| 60 | #define DER_C_PRIVATE 0xC0
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| 61 |
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| 62 | /*
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| 63 | * Run-time constructors.
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| 64 | *
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| 65 | * They all construct DER backwards, so care should be taken to use them
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| 66 | * that way.
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| 67 | */
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| 68 |
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| 69 | /* This can be used for all items that don't have a context */
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| 70 | #define DER_NO_CONTEXT -1
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| 71 |
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| 72 | int ossl_DER_w_precompiled(WPACKET *pkt, int tag,
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| 73 | const unsigned char *precompiled,
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| 74 | size_t precompiled_n);
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| 75 |
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| 76 | int ossl_DER_w_boolean(WPACKET *pkt, int tag, int b);
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| 77 | int ossl_DER_w_uint32(WPACKET *pkt, int tag, uint32_t v);
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| 78 | int ossl_DER_w_bn(WPACKET *pkt, int tag, const BIGNUM *v);
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| 79 | int ossl_DER_w_null(WPACKET *pkt, int tag);
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| 80 | int ossl_DER_w_octet_string(WPACKET *pkt, int tag,
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| 81 | const unsigned char *data, size_t data_n);
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| 82 | int ossl_DER_w_octet_string_uint32(WPACKET *pkt, int tag, uint32_t value);
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| 83 |
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| 84 | /*
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| 85 | * All constructors for constructed elements have a begin and a end function
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| 86 | */
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| 87 | int ossl_DER_w_begin_sequence(WPACKET *pkt, int tag);
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| 88 | int ossl_DER_w_end_sequence(WPACKET *pkt, int tag);
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