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); 89