mbedtls ported to mbed-classic
Fork of mbedtls by
source/x509write_crt.c@4:bef26f687287, 2016-04-07 (annotated)
- Committer:
- Brian Daniels
- Date:
- Thu Apr 07 11:11:18 2016 +0100
- Revision:
- 4:bef26f687287
- Parent:
- 1:24750b9ad5ef
Adding ported selftest test case
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Christopher Haster |
1:24750b9ad5ef | 1 | /* |
Christopher Haster |
1:24750b9ad5ef | 2 | * X.509 certificate writing |
Christopher Haster |
1:24750b9ad5ef | 3 | * |
Christopher Haster |
1:24750b9ad5ef | 4 | * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved |
Christopher Haster |
1:24750b9ad5ef | 5 | * SPDX-License-Identifier: Apache-2.0 |
Christopher Haster |
1:24750b9ad5ef | 6 | * |
Christopher Haster |
1:24750b9ad5ef | 7 | * Licensed under the Apache License, Version 2.0 (the "License"); you may |
Christopher Haster |
1:24750b9ad5ef | 8 | * not use this file except in compliance with the License. |
Christopher Haster |
1:24750b9ad5ef | 9 | * You may obtain a copy of the License at |
Christopher Haster |
1:24750b9ad5ef | 10 | * |
Christopher Haster |
1:24750b9ad5ef | 11 | * http://www.apache.org/licenses/LICENSE-2.0 |
Christopher Haster |
1:24750b9ad5ef | 12 | * |
Christopher Haster |
1:24750b9ad5ef | 13 | * Unless required by applicable law or agreed to in writing, software |
Christopher Haster |
1:24750b9ad5ef | 14 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
Christopher Haster |
1:24750b9ad5ef | 15 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
Christopher Haster |
1:24750b9ad5ef | 16 | * See the License for the specific language governing permissions and |
Christopher Haster |
1:24750b9ad5ef | 17 | * limitations under the License. |
Christopher Haster |
1:24750b9ad5ef | 18 | * |
Christopher Haster |
1:24750b9ad5ef | 19 | * This file is part of mbed TLS (https://tls.mbed.org) |
Christopher Haster |
1:24750b9ad5ef | 20 | */ |
Christopher Haster |
1:24750b9ad5ef | 21 | /* |
Christopher Haster |
1:24750b9ad5ef | 22 | * References: |
Christopher Haster |
1:24750b9ad5ef | 23 | * - certificates: RFC 5280, updated by RFC 6818 |
Christopher Haster |
1:24750b9ad5ef | 24 | * - CSRs: PKCS#10 v1.7 aka RFC 2986 |
Christopher Haster |
1:24750b9ad5ef | 25 | * - attributes: PKCS#9 v2.0 aka RFC 2985 |
Christopher Haster |
1:24750b9ad5ef | 26 | */ |
Christopher Haster |
1:24750b9ad5ef | 27 | |
Christopher Haster |
1:24750b9ad5ef | 28 | #if !defined(MBEDTLS_CONFIG_FILE) |
Christopher Haster |
1:24750b9ad5ef | 29 | #include "mbedtls/config.h" |
Christopher Haster |
1:24750b9ad5ef | 30 | #else |
Christopher Haster |
1:24750b9ad5ef | 31 | #include MBEDTLS_CONFIG_FILE |
Christopher Haster |
1:24750b9ad5ef | 32 | #endif |
Christopher Haster |
1:24750b9ad5ef | 33 | |
Christopher Haster |
1:24750b9ad5ef | 34 | #if defined(MBEDTLS_X509_CRT_WRITE_C) |
Christopher Haster |
1:24750b9ad5ef | 35 | |
Christopher Haster |
1:24750b9ad5ef | 36 | #include "mbedtls/x509_crt.h" |
Christopher Haster |
1:24750b9ad5ef | 37 | #include "mbedtls/oid.h" |
Christopher Haster |
1:24750b9ad5ef | 38 | #include "mbedtls/asn1write.h" |
Christopher Haster |
1:24750b9ad5ef | 39 | #include "mbedtls/sha1.h" |
Christopher Haster |
1:24750b9ad5ef | 40 | |
Christopher Haster |
1:24750b9ad5ef | 41 | #include <string.h> |
Christopher Haster |
1:24750b9ad5ef | 42 | |
Christopher Haster |
1:24750b9ad5ef | 43 | #if defined(MBEDTLS_PEM_WRITE_C) |
Christopher Haster |
1:24750b9ad5ef | 44 | #include "mbedtls/pem.h" |
Christopher Haster |
1:24750b9ad5ef | 45 | #endif /* MBEDTLS_PEM_WRITE_C */ |
Christopher Haster |
1:24750b9ad5ef | 46 | |
Christopher Haster |
1:24750b9ad5ef | 47 | /* Implementation that should never be optimized out by the compiler */ |
Christopher Haster |
1:24750b9ad5ef | 48 | static void mbedtls_zeroize( void *v, size_t n ) { |
Christopher Haster |
1:24750b9ad5ef | 49 | volatile unsigned char *p = v; while( n-- ) *p++ = 0; |
Christopher Haster |
1:24750b9ad5ef | 50 | } |
Christopher Haster |
1:24750b9ad5ef | 51 | |
Christopher Haster |
1:24750b9ad5ef | 52 | void mbedtls_x509write_crt_init( mbedtls_x509write_cert *ctx ) |
Christopher Haster |
1:24750b9ad5ef | 53 | { |
Christopher Haster |
1:24750b9ad5ef | 54 | memset( ctx, 0, sizeof(mbedtls_x509write_cert) ); |
Christopher Haster |
1:24750b9ad5ef | 55 | |
Christopher Haster |
1:24750b9ad5ef | 56 | mbedtls_mpi_init( &ctx->serial ); |
Christopher Haster |
1:24750b9ad5ef | 57 | ctx->version = MBEDTLS_X509_CRT_VERSION_3; |
Christopher Haster |
1:24750b9ad5ef | 58 | } |
Christopher Haster |
1:24750b9ad5ef | 59 | |
Christopher Haster |
1:24750b9ad5ef | 60 | void mbedtls_x509write_crt_free( mbedtls_x509write_cert *ctx ) |
Christopher Haster |
1:24750b9ad5ef | 61 | { |
Christopher Haster |
1:24750b9ad5ef | 62 | mbedtls_mpi_free( &ctx->serial ); |
Christopher Haster |
1:24750b9ad5ef | 63 | |
Christopher Haster |
1:24750b9ad5ef | 64 | mbedtls_asn1_free_named_data_list( &ctx->subject ); |
Christopher Haster |
1:24750b9ad5ef | 65 | mbedtls_asn1_free_named_data_list( &ctx->issuer ); |
Christopher Haster |
1:24750b9ad5ef | 66 | mbedtls_asn1_free_named_data_list( &ctx->extensions ); |
Christopher Haster |
1:24750b9ad5ef | 67 | |
Christopher Haster |
1:24750b9ad5ef | 68 | mbedtls_zeroize( ctx, sizeof(mbedtls_x509write_cert) ); |
Christopher Haster |
1:24750b9ad5ef | 69 | } |
Christopher Haster |
1:24750b9ad5ef | 70 | |
Christopher Haster |
1:24750b9ad5ef | 71 | void mbedtls_x509write_crt_set_version( mbedtls_x509write_cert *ctx, int version ) |
Christopher Haster |
1:24750b9ad5ef | 72 | { |
Christopher Haster |
1:24750b9ad5ef | 73 | ctx->version = version; |
Christopher Haster |
1:24750b9ad5ef | 74 | } |
Christopher Haster |
1:24750b9ad5ef | 75 | |
Christopher Haster |
1:24750b9ad5ef | 76 | void mbedtls_x509write_crt_set_md_alg( mbedtls_x509write_cert *ctx, mbedtls_md_type_t md_alg ) |
Christopher Haster |
1:24750b9ad5ef | 77 | { |
Christopher Haster |
1:24750b9ad5ef | 78 | ctx->md_alg = md_alg; |
Christopher Haster |
1:24750b9ad5ef | 79 | } |
Christopher Haster |
1:24750b9ad5ef | 80 | |
Christopher Haster |
1:24750b9ad5ef | 81 | void mbedtls_x509write_crt_set_subject_key( mbedtls_x509write_cert *ctx, mbedtls_pk_context *key ) |
Christopher Haster |
1:24750b9ad5ef | 82 | { |
Christopher Haster |
1:24750b9ad5ef | 83 | ctx->subject_key = key; |
Christopher Haster |
1:24750b9ad5ef | 84 | } |
Christopher Haster |
1:24750b9ad5ef | 85 | |
Christopher Haster |
1:24750b9ad5ef | 86 | void mbedtls_x509write_crt_set_issuer_key( mbedtls_x509write_cert *ctx, mbedtls_pk_context *key ) |
Christopher Haster |
1:24750b9ad5ef | 87 | { |
Christopher Haster |
1:24750b9ad5ef | 88 | ctx->issuer_key = key; |
Christopher Haster |
1:24750b9ad5ef | 89 | } |
Christopher Haster |
1:24750b9ad5ef | 90 | |
Christopher Haster |
1:24750b9ad5ef | 91 | int mbedtls_x509write_crt_set_subject_name( mbedtls_x509write_cert *ctx, |
Christopher Haster |
1:24750b9ad5ef | 92 | const char *subject_name ) |
Christopher Haster |
1:24750b9ad5ef | 93 | { |
Christopher Haster |
1:24750b9ad5ef | 94 | return mbedtls_x509_string_to_names( &ctx->subject, subject_name ); |
Christopher Haster |
1:24750b9ad5ef | 95 | } |
Christopher Haster |
1:24750b9ad5ef | 96 | |
Christopher Haster |
1:24750b9ad5ef | 97 | int mbedtls_x509write_crt_set_issuer_name( mbedtls_x509write_cert *ctx, |
Christopher Haster |
1:24750b9ad5ef | 98 | const char *issuer_name ) |
Christopher Haster |
1:24750b9ad5ef | 99 | { |
Christopher Haster |
1:24750b9ad5ef | 100 | return mbedtls_x509_string_to_names( &ctx->issuer, issuer_name ); |
Christopher Haster |
1:24750b9ad5ef | 101 | } |
Christopher Haster |
1:24750b9ad5ef | 102 | |
Christopher Haster |
1:24750b9ad5ef | 103 | int mbedtls_x509write_crt_set_serial( mbedtls_x509write_cert *ctx, const mbedtls_mpi *serial ) |
Christopher Haster |
1:24750b9ad5ef | 104 | { |
Christopher Haster |
1:24750b9ad5ef | 105 | int ret; |
Christopher Haster |
1:24750b9ad5ef | 106 | |
Christopher Haster |
1:24750b9ad5ef | 107 | if( ( ret = mbedtls_mpi_copy( &ctx->serial, serial ) ) != 0 ) |
Christopher Haster |
1:24750b9ad5ef | 108 | return( ret ); |
Christopher Haster |
1:24750b9ad5ef | 109 | |
Christopher Haster |
1:24750b9ad5ef | 110 | return( 0 ); |
Christopher Haster |
1:24750b9ad5ef | 111 | } |
Christopher Haster |
1:24750b9ad5ef | 112 | |
Christopher Haster |
1:24750b9ad5ef | 113 | int mbedtls_x509write_crt_set_validity( mbedtls_x509write_cert *ctx, const char *not_before, |
Christopher Haster |
1:24750b9ad5ef | 114 | const char *not_after ) |
Christopher Haster |
1:24750b9ad5ef | 115 | { |
Christopher Haster |
1:24750b9ad5ef | 116 | if( strlen( not_before ) != MBEDTLS_X509_RFC5280_UTC_TIME_LEN - 1 || |
Christopher Haster |
1:24750b9ad5ef | 117 | strlen( not_after ) != MBEDTLS_X509_RFC5280_UTC_TIME_LEN - 1 ) |
Christopher Haster |
1:24750b9ad5ef | 118 | { |
Christopher Haster |
1:24750b9ad5ef | 119 | return( MBEDTLS_ERR_X509_BAD_INPUT_DATA ); |
Christopher Haster |
1:24750b9ad5ef | 120 | } |
Christopher Haster |
1:24750b9ad5ef | 121 | strncpy( ctx->not_before, not_before, MBEDTLS_X509_RFC5280_UTC_TIME_LEN ); |
Christopher Haster |
1:24750b9ad5ef | 122 | strncpy( ctx->not_after , not_after , MBEDTLS_X509_RFC5280_UTC_TIME_LEN ); |
Christopher Haster |
1:24750b9ad5ef | 123 | ctx->not_before[MBEDTLS_X509_RFC5280_UTC_TIME_LEN - 1] = 'Z'; |
Christopher Haster |
1:24750b9ad5ef | 124 | ctx->not_after[MBEDTLS_X509_RFC5280_UTC_TIME_LEN - 1] = 'Z'; |
Christopher Haster |
1:24750b9ad5ef | 125 | |
Christopher Haster |
1:24750b9ad5ef | 126 | return( 0 ); |
Christopher Haster |
1:24750b9ad5ef | 127 | } |
Christopher Haster |
1:24750b9ad5ef | 128 | |
Christopher Haster |
1:24750b9ad5ef | 129 | int mbedtls_x509write_crt_set_extension( mbedtls_x509write_cert *ctx, |
Christopher Haster |
1:24750b9ad5ef | 130 | const char *oid, size_t oid_len, |
Christopher Haster |
1:24750b9ad5ef | 131 | int critical, |
Christopher Haster |
1:24750b9ad5ef | 132 | const unsigned char *val, size_t val_len ) |
Christopher Haster |
1:24750b9ad5ef | 133 | { |
Christopher Haster |
1:24750b9ad5ef | 134 | return mbedtls_x509_set_extension( &ctx->extensions, oid, oid_len, |
Christopher Haster |
1:24750b9ad5ef | 135 | critical, val, val_len ); |
Christopher Haster |
1:24750b9ad5ef | 136 | } |
Christopher Haster |
1:24750b9ad5ef | 137 | |
Christopher Haster |
1:24750b9ad5ef | 138 | int mbedtls_x509write_crt_set_basic_constraints( mbedtls_x509write_cert *ctx, |
Christopher Haster |
1:24750b9ad5ef | 139 | int is_ca, int max_pathlen ) |
Christopher Haster |
1:24750b9ad5ef | 140 | { |
Christopher Haster |
1:24750b9ad5ef | 141 | int ret; |
Christopher Haster |
1:24750b9ad5ef | 142 | unsigned char buf[9]; |
Christopher Haster |
1:24750b9ad5ef | 143 | unsigned char *c = buf + sizeof(buf); |
Christopher Haster |
1:24750b9ad5ef | 144 | size_t len = 0; |
Christopher Haster |
1:24750b9ad5ef | 145 | |
Christopher Haster |
1:24750b9ad5ef | 146 | memset( buf, 0, sizeof(buf) ); |
Christopher Haster |
1:24750b9ad5ef | 147 | |
Christopher Haster |
1:24750b9ad5ef | 148 | if( is_ca && max_pathlen > 127 ) |
Christopher Haster |
1:24750b9ad5ef | 149 | return( MBEDTLS_ERR_X509_BAD_INPUT_DATA ); |
Christopher Haster |
1:24750b9ad5ef | 150 | |
Christopher Haster |
1:24750b9ad5ef | 151 | if( is_ca ) |
Christopher Haster |
1:24750b9ad5ef | 152 | { |
Christopher Haster |
1:24750b9ad5ef | 153 | if( max_pathlen >= 0 ) |
Christopher Haster |
1:24750b9ad5ef | 154 | { |
Christopher Haster |
1:24750b9ad5ef | 155 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_int( &c, buf, max_pathlen ) ); |
Christopher Haster |
1:24750b9ad5ef | 156 | } |
Christopher Haster |
1:24750b9ad5ef | 157 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_bool( &c, buf, 1 ) ); |
Christopher Haster |
1:24750b9ad5ef | 158 | } |
Christopher Haster |
1:24750b9ad5ef | 159 | |
Christopher Haster |
1:24750b9ad5ef | 160 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) ); |
Christopher Haster |
1:24750b9ad5ef | 161 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_CONSTRUCTED | |
Christopher Haster |
1:24750b9ad5ef | 162 | MBEDTLS_ASN1_SEQUENCE ) ); |
Christopher Haster |
1:24750b9ad5ef | 163 | |
Christopher Haster |
1:24750b9ad5ef | 164 | return mbedtls_x509write_crt_set_extension( ctx, MBEDTLS_OID_BASIC_CONSTRAINTS, |
Christopher Haster |
1:24750b9ad5ef | 165 | MBEDTLS_OID_SIZE( MBEDTLS_OID_BASIC_CONSTRAINTS ), |
Christopher Haster |
1:24750b9ad5ef | 166 | 0, buf + sizeof(buf) - len, len ); |
Christopher Haster |
1:24750b9ad5ef | 167 | } |
Christopher Haster |
1:24750b9ad5ef | 168 | |
Christopher Haster |
1:24750b9ad5ef | 169 | #if defined(MBEDTLS_SHA1_C) |
Christopher Haster |
1:24750b9ad5ef | 170 | int mbedtls_x509write_crt_set_subject_key_identifier( mbedtls_x509write_cert *ctx ) |
Christopher Haster |
1:24750b9ad5ef | 171 | { |
Christopher Haster |
1:24750b9ad5ef | 172 | int ret; |
Christopher Haster |
1:24750b9ad5ef | 173 | unsigned char buf[MBEDTLS_MPI_MAX_SIZE * 2 + 20]; /* tag, length + 2xMPI */ |
Christopher Haster |
1:24750b9ad5ef | 174 | unsigned char *c = buf + sizeof(buf); |
Christopher Haster |
1:24750b9ad5ef | 175 | size_t len = 0; |
Christopher Haster |
1:24750b9ad5ef | 176 | |
Christopher Haster |
1:24750b9ad5ef | 177 | memset( buf, 0, sizeof(buf) ); |
Christopher Haster |
1:24750b9ad5ef | 178 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_pk_write_pubkey( &c, buf, ctx->subject_key ) ); |
Christopher Haster |
1:24750b9ad5ef | 179 | |
Christopher Haster |
1:24750b9ad5ef | 180 | mbedtls_sha1( buf + sizeof(buf) - len, len, buf + sizeof(buf) - 20 ); |
Christopher Haster |
1:24750b9ad5ef | 181 | c = buf + sizeof(buf) - 20; |
Christopher Haster |
1:24750b9ad5ef | 182 | len = 20; |
Christopher Haster |
1:24750b9ad5ef | 183 | |
Christopher Haster |
1:24750b9ad5ef | 184 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) ); |
Christopher Haster |
1:24750b9ad5ef | 185 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_OCTET_STRING ) ); |
Christopher Haster |
1:24750b9ad5ef | 186 | |
Christopher Haster |
1:24750b9ad5ef | 187 | return mbedtls_x509write_crt_set_extension( ctx, MBEDTLS_OID_SUBJECT_KEY_IDENTIFIER, |
Christopher Haster |
1:24750b9ad5ef | 188 | MBEDTLS_OID_SIZE( MBEDTLS_OID_SUBJECT_KEY_IDENTIFIER ), |
Christopher Haster |
1:24750b9ad5ef | 189 | 0, buf + sizeof(buf) - len, len ); |
Christopher Haster |
1:24750b9ad5ef | 190 | } |
Christopher Haster |
1:24750b9ad5ef | 191 | |
Christopher Haster |
1:24750b9ad5ef | 192 | int mbedtls_x509write_crt_set_authority_key_identifier( mbedtls_x509write_cert *ctx ) |
Christopher Haster |
1:24750b9ad5ef | 193 | { |
Christopher Haster |
1:24750b9ad5ef | 194 | int ret; |
Christopher Haster |
1:24750b9ad5ef | 195 | unsigned char buf[MBEDTLS_MPI_MAX_SIZE * 2 + 20]; /* tag, length + 2xMPI */ |
Christopher Haster |
1:24750b9ad5ef | 196 | unsigned char *c = buf + sizeof(buf); |
Christopher Haster |
1:24750b9ad5ef | 197 | size_t len = 0; |
Christopher Haster |
1:24750b9ad5ef | 198 | |
Christopher Haster |
1:24750b9ad5ef | 199 | memset( buf, 0, sizeof(buf) ); |
Christopher Haster |
1:24750b9ad5ef | 200 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_pk_write_pubkey( &c, buf, ctx->issuer_key ) ); |
Christopher Haster |
1:24750b9ad5ef | 201 | |
Christopher Haster |
1:24750b9ad5ef | 202 | mbedtls_sha1( buf + sizeof(buf) - len, len, buf + sizeof(buf) - 20 ); |
Christopher Haster |
1:24750b9ad5ef | 203 | c = buf + sizeof(buf) - 20; |
Christopher Haster |
1:24750b9ad5ef | 204 | len = 20; |
Christopher Haster |
1:24750b9ad5ef | 205 | |
Christopher Haster |
1:24750b9ad5ef | 206 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) ); |
Christopher Haster |
1:24750b9ad5ef | 207 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_CONTEXT_SPECIFIC | 0 ) ); |
Christopher Haster |
1:24750b9ad5ef | 208 | |
Christopher Haster |
1:24750b9ad5ef | 209 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) ); |
Christopher Haster |
1:24750b9ad5ef | 210 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_CONSTRUCTED | |
Christopher Haster |
1:24750b9ad5ef | 211 | MBEDTLS_ASN1_SEQUENCE ) ); |
Christopher Haster |
1:24750b9ad5ef | 212 | |
Christopher Haster |
1:24750b9ad5ef | 213 | return mbedtls_x509write_crt_set_extension( ctx, MBEDTLS_OID_AUTHORITY_KEY_IDENTIFIER, |
Christopher Haster |
1:24750b9ad5ef | 214 | MBEDTLS_OID_SIZE( MBEDTLS_OID_AUTHORITY_KEY_IDENTIFIER ), |
Christopher Haster |
1:24750b9ad5ef | 215 | 0, buf + sizeof(buf) - len, len ); |
Christopher Haster |
1:24750b9ad5ef | 216 | } |
Christopher Haster |
1:24750b9ad5ef | 217 | #endif /* MBEDTLS_SHA1_C */ |
Christopher Haster |
1:24750b9ad5ef | 218 | |
Christopher Haster |
1:24750b9ad5ef | 219 | int mbedtls_x509write_crt_set_key_usage( mbedtls_x509write_cert *ctx, |
Christopher Haster |
1:24750b9ad5ef | 220 | unsigned int key_usage ) |
Christopher Haster |
1:24750b9ad5ef | 221 | { |
Christopher Haster |
1:24750b9ad5ef | 222 | unsigned char buf[4], ku; |
Christopher Haster |
1:24750b9ad5ef | 223 | unsigned char *c; |
Christopher Haster |
1:24750b9ad5ef | 224 | int ret; |
Christopher Haster |
1:24750b9ad5ef | 225 | |
Christopher Haster |
1:24750b9ad5ef | 226 | /* We currently only support 7 bits, from 0x80 to 0x02 */ |
Christopher Haster |
1:24750b9ad5ef | 227 | if( ( key_usage & ~0xfe ) != 0 ) |
Christopher Haster |
1:24750b9ad5ef | 228 | return( MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE ); |
Christopher Haster |
1:24750b9ad5ef | 229 | |
Christopher Haster |
1:24750b9ad5ef | 230 | c = buf + 4; |
Christopher Haster |
1:24750b9ad5ef | 231 | ku = (unsigned char) key_usage; |
Christopher Haster |
1:24750b9ad5ef | 232 | |
Christopher Haster |
1:24750b9ad5ef | 233 | if( ( ret = mbedtls_asn1_write_bitstring( &c, buf, &ku, 7 ) ) != 4 ) |
Christopher Haster |
1:24750b9ad5ef | 234 | return( ret ); |
Christopher Haster |
1:24750b9ad5ef | 235 | |
Christopher Haster |
1:24750b9ad5ef | 236 | ret = mbedtls_x509write_crt_set_extension( ctx, MBEDTLS_OID_KEY_USAGE, |
Christopher Haster |
1:24750b9ad5ef | 237 | MBEDTLS_OID_SIZE( MBEDTLS_OID_KEY_USAGE ), |
Christopher Haster |
1:24750b9ad5ef | 238 | 1, buf, 4 ); |
Christopher Haster |
1:24750b9ad5ef | 239 | if( ret != 0 ) |
Christopher Haster |
1:24750b9ad5ef | 240 | return( ret ); |
Christopher Haster |
1:24750b9ad5ef | 241 | |
Christopher Haster |
1:24750b9ad5ef | 242 | return( 0 ); |
Christopher Haster |
1:24750b9ad5ef | 243 | } |
Christopher Haster |
1:24750b9ad5ef | 244 | |
Christopher Haster |
1:24750b9ad5ef | 245 | int mbedtls_x509write_crt_set_ns_cert_type( mbedtls_x509write_cert *ctx, |
Christopher Haster |
1:24750b9ad5ef | 246 | unsigned char ns_cert_type ) |
Christopher Haster |
1:24750b9ad5ef | 247 | { |
Christopher Haster |
1:24750b9ad5ef | 248 | unsigned char buf[4]; |
Christopher Haster |
1:24750b9ad5ef | 249 | unsigned char *c; |
Christopher Haster |
1:24750b9ad5ef | 250 | int ret; |
Christopher Haster |
1:24750b9ad5ef | 251 | |
Christopher Haster |
1:24750b9ad5ef | 252 | c = buf + 4; |
Christopher Haster |
1:24750b9ad5ef | 253 | |
Christopher Haster |
1:24750b9ad5ef | 254 | if( ( ret = mbedtls_asn1_write_bitstring( &c, buf, &ns_cert_type, 8 ) ) != 4 ) |
Christopher Haster |
1:24750b9ad5ef | 255 | return( ret ); |
Christopher Haster |
1:24750b9ad5ef | 256 | |
Christopher Haster |
1:24750b9ad5ef | 257 | ret = mbedtls_x509write_crt_set_extension( ctx, MBEDTLS_OID_NS_CERT_TYPE, |
Christopher Haster |
1:24750b9ad5ef | 258 | MBEDTLS_OID_SIZE( MBEDTLS_OID_NS_CERT_TYPE ), |
Christopher Haster |
1:24750b9ad5ef | 259 | 0, buf, 4 ); |
Christopher Haster |
1:24750b9ad5ef | 260 | if( ret != 0 ) |
Christopher Haster |
1:24750b9ad5ef | 261 | return( ret ); |
Christopher Haster |
1:24750b9ad5ef | 262 | |
Christopher Haster |
1:24750b9ad5ef | 263 | return( 0 ); |
Christopher Haster |
1:24750b9ad5ef | 264 | } |
Christopher Haster |
1:24750b9ad5ef | 265 | |
Christopher Haster |
1:24750b9ad5ef | 266 | static int x509_write_time( unsigned char **p, unsigned char *start, |
Christopher Haster |
1:24750b9ad5ef | 267 | const char *time, size_t size ) |
Christopher Haster |
1:24750b9ad5ef | 268 | { |
Christopher Haster |
1:24750b9ad5ef | 269 | int ret; |
Christopher Haster |
1:24750b9ad5ef | 270 | size_t len = 0; |
Christopher Haster |
1:24750b9ad5ef | 271 | |
Christopher Haster |
1:24750b9ad5ef | 272 | /* |
Christopher Haster |
1:24750b9ad5ef | 273 | * write MBEDTLS_ASN1_UTC_TIME if year < 2050 (2 bytes shorter) |
Christopher Haster |
1:24750b9ad5ef | 274 | */ |
Christopher Haster |
1:24750b9ad5ef | 275 | if( time[0] == '2' && time[1] == '0' && time [2] < '5' ) |
Christopher Haster |
1:24750b9ad5ef | 276 | { |
Christopher Haster |
1:24750b9ad5ef | 277 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_raw_buffer( p, start, |
Christopher Haster |
1:24750b9ad5ef | 278 | (const unsigned char *) time + 2, |
Christopher Haster |
1:24750b9ad5ef | 279 | size - 2 ) ); |
Christopher Haster |
1:24750b9ad5ef | 280 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) ); |
Christopher Haster |
1:24750b9ad5ef | 281 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_UTC_TIME ) ); |
Christopher Haster |
1:24750b9ad5ef | 282 | } |
Christopher Haster |
1:24750b9ad5ef | 283 | else |
Christopher Haster |
1:24750b9ad5ef | 284 | { |
Christopher Haster |
1:24750b9ad5ef | 285 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_raw_buffer( p, start, |
Christopher Haster |
1:24750b9ad5ef | 286 | (const unsigned char *) time, |
Christopher Haster |
1:24750b9ad5ef | 287 | size ) ); |
Christopher Haster |
1:24750b9ad5ef | 288 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) ); |
Christopher Haster |
1:24750b9ad5ef | 289 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_GENERALIZED_TIME ) ); |
Christopher Haster |
1:24750b9ad5ef | 290 | } |
Christopher Haster |
1:24750b9ad5ef | 291 | |
Christopher Haster |
1:24750b9ad5ef | 292 | return( (int) len ); |
Christopher Haster |
1:24750b9ad5ef | 293 | } |
Christopher Haster |
1:24750b9ad5ef | 294 | |
Christopher Haster |
1:24750b9ad5ef | 295 | int mbedtls_x509write_crt_der( mbedtls_x509write_cert *ctx, unsigned char *buf, size_t size, |
Christopher Haster |
1:24750b9ad5ef | 296 | int (*f_rng)(void *, unsigned char *, size_t), |
Christopher Haster |
1:24750b9ad5ef | 297 | void *p_rng ) |
Christopher Haster |
1:24750b9ad5ef | 298 | { |
Christopher Haster |
1:24750b9ad5ef | 299 | int ret; |
Christopher Haster |
1:24750b9ad5ef | 300 | const char *sig_oid; |
Christopher Haster |
1:24750b9ad5ef | 301 | size_t sig_oid_len = 0; |
Christopher Haster |
1:24750b9ad5ef | 302 | unsigned char *c, *c2; |
Christopher Haster |
1:24750b9ad5ef | 303 | unsigned char hash[64]; |
Christopher Haster |
1:24750b9ad5ef | 304 | unsigned char sig[MBEDTLS_MPI_MAX_SIZE]; |
Christopher Haster |
1:24750b9ad5ef | 305 | unsigned char tmp_buf[2048]; |
Christopher Haster |
1:24750b9ad5ef | 306 | size_t sub_len = 0, pub_len = 0, sig_and_oid_len = 0, sig_len; |
Christopher Haster |
1:24750b9ad5ef | 307 | size_t len = 0; |
Christopher Haster |
1:24750b9ad5ef | 308 | mbedtls_pk_type_t pk_alg; |
Christopher Haster |
1:24750b9ad5ef | 309 | |
Christopher Haster |
1:24750b9ad5ef | 310 | /* |
Christopher Haster |
1:24750b9ad5ef | 311 | * Prepare data to be signed in tmp_buf |
Christopher Haster |
1:24750b9ad5ef | 312 | */ |
Christopher Haster |
1:24750b9ad5ef | 313 | c = tmp_buf + sizeof( tmp_buf ); |
Christopher Haster |
1:24750b9ad5ef | 314 | |
Christopher Haster |
1:24750b9ad5ef | 315 | /* Signature algorithm needed in TBS, and later for actual signature */ |
Christopher Haster |
1:24750b9ad5ef | 316 | pk_alg = mbedtls_pk_get_type( ctx->issuer_key ); |
Christopher Haster |
1:24750b9ad5ef | 317 | if( pk_alg == MBEDTLS_PK_ECKEY ) |
Christopher Haster |
1:24750b9ad5ef | 318 | pk_alg = MBEDTLS_PK_ECDSA; |
Christopher Haster |
1:24750b9ad5ef | 319 | |
Christopher Haster |
1:24750b9ad5ef | 320 | if( ( ret = mbedtls_oid_get_oid_by_sig_alg( pk_alg, ctx->md_alg, |
Christopher Haster |
1:24750b9ad5ef | 321 | &sig_oid, &sig_oid_len ) ) != 0 ) |
Christopher Haster |
1:24750b9ad5ef | 322 | { |
Christopher Haster |
1:24750b9ad5ef | 323 | return( ret ); |
Christopher Haster |
1:24750b9ad5ef | 324 | } |
Christopher Haster |
1:24750b9ad5ef | 325 | |
Christopher Haster |
1:24750b9ad5ef | 326 | /* |
Christopher Haster |
1:24750b9ad5ef | 327 | * Extensions ::= SEQUENCE SIZE (1..MAX) OF Extension |
Christopher Haster |
1:24750b9ad5ef | 328 | */ |
Christopher Haster |
1:24750b9ad5ef | 329 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_x509_write_extensions( &c, tmp_buf, ctx->extensions ) ); |
Christopher Haster |
1:24750b9ad5ef | 330 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, tmp_buf, len ) ); |
Christopher Haster |
1:24750b9ad5ef | 331 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, tmp_buf, MBEDTLS_ASN1_CONSTRUCTED | |
Christopher Haster |
1:24750b9ad5ef | 332 | MBEDTLS_ASN1_SEQUENCE ) ); |
Christopher Haster |
1:24750b9ad5ef | 333 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, tmp_buf, len ) ); |
Christopher Haster |
1:24750b9ad5ef | 334 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, tmp_buf, MBEDTLS_ASN1_CONTEXT_SPECIFIC | |
Christopher Haster |
1:24750b9ad5ef | 335 | MBEDTLS_ASN1_CONSTRUCTED | 3 ) ); |
Christopher Haster |
1:24750b9ad5ef | 336 | |
Christopher Haster |
1:24750b9ad5ef | 337 | /* |
Christopher Haster |
1:24750b9ad5ef | 338 | * SubjectPublicKeyInfo |
Christopher Haster |
1:24750b9ad5ef | 339 | */ |
Christopher Haster |
1:24750b9ad5ef | 340 | MBEDTLS_ASN1_CHK_ADD( pub_len, mbedtls_pk_write_pubkey_der( ctx->subject_key, |
Christopher Haster |
1:24750b9ad5ef | 341 | tmp_buf, c - tmp_buf ) ); |
Christopher Haster |
1:24750b9ad5ef | 342 | c -= pub_len; |
Christopher Haster |
1:24750b9ad5ef | 343 | len += pub_len; |
Christopher Haster |
1:24750b9ad5ef | 344 | |
Christopher Haster |
1:24750b9ad5ef | 345 | /* |
Christopher Haster |
1:24750b9ad5ef | 346 | * Subject ::= Name |
Christopher Haster |
1:24750b9ad5ef | 347 | */ |
Christopher Haster |
1:24750b9ad5ef | 348 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_x509_write_names( &c, tmp_buf, ctx->subject ) ); |
Christopher Haster |
1:24750b9ad5ef | 349 | |
Christopher Haster |
1:24750b9ad5ef | 350 | /* |
Christopher Haster |
1:24750b9ad5ef | 351 | * Validity ::= SEQUENCE { |
Christopher Haster |
1:24750b9ad5ef | 352 | * notBefore Time, |
Christopher Haster |
1:24750b9ad5ef | 353 | * notAfter Time } |
Christopher Haster |
1:24750b9ad5ef | 354 | */ |
Christopher Haster |
1:24750b9ad5ef | 355 | sub_len = 0; |
Christopher Haster |
1:24750b9ad5ef | 356 | |
Christopher Haster |
1:24750b9ad5ef | 357 | MBEDTLS_ASN1_CHK_ADD( sub_len, x509_write_time( &c, tmp_buf, ctx->not_after, |
Christopher Haster |
1:24750b9ad5ef | 358 | MBEDTLS_X509_RFC5280_UTC_TIME_LEN ) ); |
Christopher Haster |
1:24750b9ad5ef | 359 | |
Christopher Haster |
1:24750b9ad5ef | 360 | MBEDTLS_ASN1_CHK_ADD( sub_len, x509_write_time( &c, tmp_buf, ctx->not_before, |
Christopher Haster |
1:24750b9ad5ef | 361 | MBEDTLS_X509_RFC5280_UTC_TIME_LEN ) ); |
Christopher Haster |
1:24750b9ad5ef | 362 | |
Christopher Haster |
1:24750b9ad5ef | 363 | len += sub_len; |
Christopher Haster |
1:24750b9ad5ef | 364 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, tmp_buf, sub_len ) ); |
Christopher Haster |
1:24750b9ad5ef | 365 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, tmp_buf, MBEDTLS_ASN1_CONSTRUCTED | |
Christopher Haster |
1:24750b9ad5ef | 366 | MBEDTLS_ASN1_SEQUENCE ) ); |
Christopher Haster |
1:24750b9ad5ef | 367 | |
Christopher Haster |
1:24750b9ad5ef | 368 | /* |
Christopher Haster |
1:24750b9ad5ef | 369 | * Issuer ::= Name |
Christopher Haster |
1:24750b9ad5ef | 370 | */ |
Christopher Haster |
1:24750b9ad5ef | 371 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_x509_write_names( &c, tmp_buf, ctx->issuer ) ); |
Christopher Haster |
1:24750b9ad5ef | 372 | |
Christopher Haster |
1:24750b9ad5ef | 373 | /* |
Christopher Haster |
1:24750b9ad5ef | 374 | * Signature ::= AlgorithmIdentifier |
Christopher Haster |
1:24750b9ad5ef | 375 | */ |
Christopher Haster |
1:24750b9ad5ef | 376 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_algorithm_identifier( &c, tmp_buf, |
Christopher Haster |
1:24750b9ad5ef | 377 | sig_oid, strlen( sig_oid ), 0 ) ); |
Christopher Haster |
1:24750b9ad5ef | 378 | |
Christopher Haster |
1:24750b9ad5ef | 379 | /* |
Christopher Haster |
1:24750b9ad5ef | 380 | * Serial ::= INTEGER |
Christopher Haster |
1:24750b9ad5ef | 381 | */ |
Christopher Haster |
1:24750b9ad5ef | 382 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, tmp_buf, &ctx->serial ) ); |
Christopher Haster |
1:24750b9ad5ef | 383 | |
Christopher Haster |
1:24750b9ad5ef | 384 | /* |
Christopher Haster |
1:24750b9ad5ef | 385 | * Version ::= INTEGER { v1(0), v2(1), v3(2) } |
Christopher Haster |
1:24750b9ad5ef | 386 | */ |
Christopher Haster |
1:24750b9ad5ef | 387 | sub_len = 0; |
Christopher Haster |
1:24750b9ad5ef | 388 | MBEDTLS_ASN1_CHK_ADD( sub_len, mbedtls_asn1_write_int( &c, tmp_buf, ctx->version ) ); |
Christopher Haster |
1:24750b9ad5ef | 389 | len += sub_len; |
Christopher Haster |
1:24750b9ad5ef | 390 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, tmp_buf, sub_len ) ); |
Christopher Haster |
1:24750b9ad5ef | 391 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, tmp_buf, MBEDTLS_ASN1_CONTEXT_SPECIFIC | |
Christopher Haster |
1:24750b9ad5ef | 392 | MBEDTLS_ASN1_CONSTRUCTED | 0 ) ); |
Christopher Haster |
1:24750b9ad5ef | 393 | |
Christopher Haster |
1:24750b9ad5ef | 394 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, tmp_buf, len ) ); |
Christopher Haster |
1:24750b9ad5ef | 395 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, tmp_buf, MBEDTLS_ASN1_CONSTRUCTED | |
Christopher Haster |
1:24750b9ad5ef | 396 | MBEDTLS_ASN1_SEQUENCE ) ); |
Christopher Haster |
1:24750b9ad5ef | 397 | |
Christopher Haster |
1:24750b9ad5ef | 398 | /* |
Christopher Haster |
1:24750b9ad5ef | 399 | * Make signature |
Christopher Haster |
1:24750b9ad5ef | 400 | */ |
Christopher Haster |
1:24750b9ad5ef | 401 | mbedtls_md( mbedtls_md_info_from_type( ctx->md_alg ), c, len, hash ); |
Christopher Haster |
1:24750b9ad5ef | 402 | |
Christopher Haster |
1:24750b9ad5ef | 403 | if( ( ret = mbedtls_pk_sign( ctx->issuer_key, ctx->md_alg, hash, 0, sig, &sig_len, |
Christopher Haster |
1:24750b9ad5ef | 404 | f_rng, p_rng ) ) != 0 ) |
Christopher Haster |
1:24750b9ad5ef | 405 | { |
Christopher Haster |
1:24750b9ad5ef | 406 | return( ret ); |
Christopher Haster |
1:24750b9ad5ef | 407 | } |
Christopher Haster |
1:24750b9ad5ef | 408 | |
Christopher Haster |
1:24750b9ad5ef | 409 | /* |
Christopher Haster |
1:24750b9ad5ef | 410 | * Write data to output buffer |
Christopher Haster |
1:24750b9ad5ef | 411 | */ |
Christopher Haster |
1:24750b9ad5ef | 412 | c2 = buf + size; |
Christopher Haster |
1:24750b9ad5ef | 413 | MBEDTLS_ASN1_CHK_ADD( sig_and_oid_len, mbedtls_x509_write_sig( &c2, buf, |
Christopher Haster |
1:24750b9ad5ef | 414 | sig_oid, sig_oid_len, sig, sig_len ) ); |
Christopher Haster |
1:24750b9ad5ef | 415 | |
Christopher Haster |
1:24750b9ad5ef | 416 | c2 -= len; |
Christopher Haster |
1:24750b9ad5ef | 417 | memcpy( c2, c, len ); |
Christopher Haster |
1:24750b9ad5ef | 418 | |
Christopher Haster |
1:24750b9ad5ef | 419 | len += sig_and_oid_len; |
Christopher Haster |
1:24750b9ad5ef | 420 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c2, buf, len ) ); |
Christopher Haster |
1:24750b9ad5ef | 421 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c2, buf, MBEDTLS_ASN1_CONSTRUCTED | |
Christopher Haster |
1:24750b9ad5ef | 422 | MBEDTLS_ASN1_SEQUENCE ) ); |
Christopher Haster |
1:24750b9ad5ef | 423 | |
Christopher Haster |
1:24750b9ad5ef | 424 | return( (int) len ); |
Christopher Haster |
1:24750b9ad5ef | 425 | } |
Christopher Haster |
1:24750b9ad5ef | 426 | |
Christopher Haster |
1:24750b9ad5ef | 427 | #define PEM_BEGIN_CRT "-----BEGIN CERTIFICATE-----\n" |
Christopher Haster |
1:24750b9ad5ef | 428 | #define PEM_END_CRT "-----END CERTIFICATE-----\n" |
Christopher Haster |
1:24750b9ad5ef | 429 | |
Christopher Haster |
1:24750b9ad5ef | 430 | #if defined(MBEDTLS_PEM_WRITE_C) |
Christopher Haster |
1:24750b9ad5ef | 431 | int mbedtls_x509write_crt_pem( mbedtls_x509write_cert *crt, unsigned char *buf, size_t size, |
Christopher Haster |
1:24750b9ad5ef | 432 | int (*f_rng)(void *, unsigned char *, size_t), |
Christopher Haster |
1:24750b9ad5ef | 433 | void *p_rng ) |
Christopher Haster |
1:24750b9ad5ef | 434 | { |
Christopher Haster |
1:24750b9ad5ef | 435 | int ret; |
Christopher Haster |
1:24750b9ad5ef | 436 | unsigned char output_buf[4096]; |
Christopher Haster |
1:24750b9ad5ef | 437 | size_t olen = 0; |
Christopher Haster |
1:24750b9ad5ef | 438 | |
Christopher Haster |
1:24750b9ad5ef | 439 | if( ( ret = mbedtls_x509write_crt_der( crt, output_buf, sizeof(output_buf), |
Christopher Haster |
1:24750b9ad5ef | 440 | f_rng, p_rng ) ) < 0 ) |
Christopher Haster |
1:24750b9ad5ef | 441 | { |
Christopher Haster |
1:24750b9ad5ef | 442 | return( ret ); |
Christopher Haster |
1:24750b9ad5ef | 443 | } |
Christopher Haster |
1:24750b9ad5ef | 444 | |
Christopher Haster |
1:24750b9ad5ef | 445 | if( ( ret = mbedtls_pem_write_buffer( PEM_BEGIN_CRT, PEM_END_CRT, |
Christopher Haster |
1:24750b9ad5ef | 446 | output_buf + sizeof(output_buf) - ret, |
Christopher Haster |
1:24750b9ad5ef | 447 | ret, buf, size, &olen ) ) != 0 ) |
Christopher Haster |
1:24750b9ad5ef | 448 | { |
Christopher Haster |
1:24750b9ad5ef | 449 | return( ret ); |
Christopher Haster |
1:24750b9ad5ef | 450 | } |
Christopher Haster |
1:24750b9ad5ef | 451 | |
Christopher Haster |
1:24750b9ad5ef | 452 | return( 0 ); |
Christopher Haster |
1:24750b9ad5ef | 453 | } |
Christopher Haster |
1:24750b9ad5ef | 454 | #endif /* MBEDTLS_PEM_WRITE_C */ |
Christopher Haster |
1:24750b9ad5ef | 455 | |
Christopher Haster |
1:24750b9ad5ef | 456 | #endif /* MBEDTLS_X509_CRT_WRITE_C */ |