1*b0d17251Schristos /* 2*b0d17251Schristos * Copyright 2020-2022 The OpenSSL Project Authors. All Rights Reserved. 3*b0d17251Schristos * 4*b0d17251Schristos * Licensed under the Apache License 2.0 (the "License"). You may not use 5*b0d17251Schristos * this file except in compliance with the License. You can obtain a copy 6*b0d17251Schristos * in the file LICENSE in the source distribution or at 7*b0d17251Schristos * https://www.openssl.org/source/license.html 8*b0d17251Schristos */ 9*b0d17251Schristos 10*b0d17251Schristos #include <openssl/bn.h> 11*b0d17251Schristos #include "internal/packet.h" 12*b0d17251Schristos 13*b0d17251Schristos /* 14*b0d17251Schristos * NOTE: X.690 numbers the identifier octet bits 1 to 8. 15*b0d17251Schristos * We use the same numbering in comments here. 16*b0d17251Schristos */ 17*b0d17251Schristos 18*b0d17251Schristos /* Well known primitive tags */ 19*b0d17251Schristos 20*b0d17251Schristos /* 21*b0d17251Schristos * DER UNIVERSAL tags, occupying bits 1-5 in the DER identifier byte 22*b0d17251Schristos * These are only valid for the UNIVERSAL class. With the other classes, 23*b0d17251Schristos * these bits have a different meaning. 24*b0d17251Schristos */ 25*b0d17251Schristos #define DER_P_EOC 0 /* BER End Of Contents tag */ 26*b0d17251Schristos #define DER_P_BOOLEAN 1 27*b0d17251Schristos #define DER_P_INTEGER 2 28*b0d17251Schristos #define DER_P_BIT_STRING 3 29*b0d17251Schristos #define DER_P_OCTET_STRING 4 30*b0d17251Schristos #define DER_P_NULL 5 31*b0d17251Schristos #define DER_P_OBJECT 6 32*b0d17251Schristos #define DER_P_OBJECT_DESCRIPTOR 7 33*b0d17251Schristos #define DER_P_EXTERNAL 8 34*b0d17251Schristos #define DER_P_REAL 9 35*b0d17251Schristos #define DER_P_ENUMERATED 10 36*b0d17251Schristos #define DER_P_UTF8STRING 12 37*b0d17251Schristos #define DER_P_SEQUENCE 16 38*b0d17251Schristos #define DER_P_SET 17 39*b0d17251Schristos #define DER_P_NUMERICSTRING 18 40*b0d17251Schristos #define DER_P_PRINTABLESTRING 19 41*b0d17251Schristos #define DER_P_T61STRING 20 42*b0d17251Schristos #define DER_P_VIDEOTEXSTRING 21 43*b0d17251Schristos #define DER_P_IA5STRING 22 44*b0d17251Schristos #define DER_P_UTCTIME 23 45*b0d17251Schristos #define DER_P_GENERALIZEDTIME 24 46*b0d17251Schristos #define DER_P_GRAPHICSTRING 25 47*b0d17251Schristos #define DER_P_ISO64STRING 26 48*b0d17251Schristos #define DER_P_GENERALSTRING 27 49*b0d17251Schristos #define DER_P_UNIVERSALSTRING 28 50*b0d17251Schristos #define DER_P_BMPSTRING 30 51*b0d17251Schristos 52*b0d17251Schristos /* DER Flags, occupying bit 6 in the DER identifier byte */ 53*b0d17251Schristos #define DER_F_PRIMITIVE 0x00 54*b0d17251Schristos #define DER_F_CONSTRUCTED 0x20 55*b0d17251Schristos 56*b0d17251Schristos /* DER classes tags, occupying bits 7-8 in the DER identifier byte */ 57*b0d17251Schristos #define DER_C_UNIVERSAL 0x00 58*b0d17251Schristos #define DER_C_APPLICATION 0x40 59*b0d17251Schristos #define DER_C_CONTEXT 0x80 60*b0d17251Schristos #define DER_C_PRIVATE 0xC0 61*b0d17251Schristos 62*b0d17251Schristos /* 63*b0d17251Schristos * Run-time constructors. 64*b0d17251Schristos * 65*b0d17251Schristos * They all construct DER backwards, so care should be taken to use them 66*b0d17251Schristos * that way. 67*b0d17251Schristos */ 68*b0d17251Schristos 69*b0d17251Schristos /* This can be used for all items that don't have a context */ 70*b0d17251Schristos #define DER_NO_CONTEXT -1 71*b0d17251Schristos 72*b0d17251Schristos int ossl_DER_w_precompiled(WPACKET *pkt, int tag, 73*b0d17251Schristos const unsigned char *precompiled, 74*b0d17251Schristos size_t precompiled_n); 75*b0d17251Schristos 76*b0d17251Schristos int ossl_DER_w_boolean(WPACKET *pkt, int tag, int b); 77*b0d17251Schristos int ossl_DER_w_uint32(WPACKET *pkt, int tag, uint32_t v); 78*b0d17251Schristos int ossl_DER_w_bn(WPACKET *pkt, int tag, const BIGNUM *v); 79*b0d17251Schristos int ossl_DER_w_null(WPACKET *pkt, int tag); 80*b0d17251Schristos int ossl_DER_w_octet_string(WPACKET *pkt, int tag, 81*b0d17251Schristos const unsigned char *data, size_t data_n); 82*b0d17251Schristos int ossl_DER_w_octet_string_uint32(WPACKET *pkt, int tag, uint32_t value); 83*b0d17251Schristos 84*b0d17251Schristos /* 85*b0d17251Schristos * All constructors for constructed elements have a begin and a end function 86*b0d17251Schristos */ 87*b0d17251Schristos int ossl_DER_w_begin_sequence(WPACKET *pkt, int tag); 88*b0d17251Schristos int ossl_DER_w_end_sequence(WPACKET *pkt, int tag); 89