I added functionality to get the RSSI, BER, and Cell Neighbor for reporting connection issues to M2X
Dependencies: WncControllerK64F
mbedtls/source/pkwrite.c@12:0071cb144c7a, 2016-11-01 (annotated)
- Committer:
- JMF
- Date:
- Tue Nov 01 14:22:56 2016 +0000
- Revision:
- 12:0071cb144c7a
Adding mbedtls files
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
JMF | 12:0071cb144c7a | 1 | /* |
JMF | 12:0071cb144c7a | 2 | * Public Key layer for writing key files and structures |
JMF | 12:0071cb144c7a | 3 | * |
JMF | 12:0071cb144c7a | 4 | * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved |
JMF | 12:0071cb144c7a | 5 | * SPDX-License-Identifier: Apache-2.0 |
JMF | 12:0071cb144c7a | 6 | * |
JMF | 12:0071cb144c7a | 7 | * Licensed under the Apache License, Version 2.0 (the "License"); you may |
JMF | 12:0071cb144c7a | 8 | * not use this file except in compliance with the License. |
JMF | 12:0071cb144c7a | 9 | * You may obtain a copy of the License at |
JMF | 12:0071cb144c7a | 10 | * |
JMF | 12:0071cb144c7a | 11 | * http://www.apache.org/licenses/LICENSE-2.0 |
JMF | 12:0071cb144c7a | 12 | * |
JMF | 12:0071cb144c7a | 13 | * Unless required by applicable law or agreed to in writing, software |
JMF | 12:0071cb144c7a | 14 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
JMF | 12:0071cb144c7a | 15 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
JMF | 12:0071cb144c7a | 16 | * See the License for the specific language governing permissions and |
JMF | 12:0071cb144c7a | 17 | * limitations under the License. |
JMF | 12:0071cb144c7a | 18 | * |
JMF | 12:0071cb144c7a | 19 | * This file is part of mbed TLS (https://tls.mbed.org) |
JMF | 12:0071cb144c7a | 20 | */ |
JMF | 12:0071cb144c7a | 21 | |
JMF | 12:0071cb144c7a | 22 | #if !defined(MBEDTLS_CONFIG_FILE) |
JMF | 12:0071cb144c7a | 23 | #include "mbedtls/config.h" |
JMF | 12:0071cb144c7a | 24 | #else |
JMF | 12:0071cb144c7a | 25 | #include MBEDTLS_CONFIG_FILE |
JMF | 12:0071cb144c7a | 26 | #endif |
JMF | 12:0071cb144c7a | 27 | |
JMF | 12:0071cb144c7a | 28 | #if defined(MBEDTLS_PK_WRITE_C) |
JMF | 12:0071cb144c7a | 29 | |
JMF | 12:0071cb144c7a | 30 | #include "mbedtls/pk.h" |
JMF | 12:0071cb144c7a | 31 | #include "mbedtls/asn1write.h" |
JMF | 12:0071cb144c7a | 32 | #include "mbedtls/oid.h" |
JMF | 12:0071cb144c7a | 33 | |
JMF | 12:0071cb144c7a | 34 | #include <string.h> |
JMF | 12:0071cb144c7a | 35 | |
JMF | 12:0071cb144c7a | 36 | #if defined(MBEDTLS_RSA_C) |
JMF | 12:0071cb144c7a | 37 | #include "mbedtls/rsa.h" |
JMF | 12:0071cb144c7a | 38 | #endif |
JMF | 12:0071cb144c7a | 39 | #if defined(MBEDTLS_ECP_C) |
JMF | 12:0071cb144c7a | 40 | #include "mbedtls/ecp.h" |
JMF | 12:0071cb144c7a | 41 | #endif |
JMF | 12:0071cb144c7a | 42 | #if defined(MBEDTLS_ECDSA_C) |
JMF | 12:0071cb144c7a | 43 | #include "mbedtls/ecdsa.h" |
JMF | 12:0071cb144c7a | 44 | #endif |
JMF | 12:0071cb144c7a | 45 | #if defined(MBEDTLS_PEM_WRITE_C) |
JMF | 12:0071cb144c7a | 46 | #include "mbedtls/pem.h" |
JMF | 12:0071cb144c7a | 47 | #endif |
JMF | 12:0071cb144c7a | 48 | |
JMF | 12:0071cb144c7a | 49 | #if defined(MBEDTLS_PLATFORM_C) |
JMF | 12:0071cb144c7a | 50 | #include "mbedtls/platform.h" |
JMF | 12:0071cb144c7a | 51 | #else |
JMF | 12:0071cb144c7a | 52 | #include <stdlib.h> |
JMF | 12:0071cb144c7a | 53 | #define mbedtls_calloc calloc |
JMF | 12:0071cb144c7a | 54 | #define mbedtls_free free |
JMF | 12:0071cb144c7a | 55 | #endif |
JMF | 12:0071cb144c7a | 56 | |
JMF | 12:0071cb144c7a | 57 | #if defined(MBEDTLS_RSA_C) |
JMF | 12:0071cb144c7a | 58 | /* |
JMF | 12:0071cb144c7a | 59 | * RSAPublicKey ::= SEQUENCE { |
JMF | 12:0071cb144c7a | 60 | * modulus INTEGER, -- n |
JMF | 12:0071cb144c7a | 61 | * publicExponent INTEGER -- e |
JMF | 12:0071cb144c7a | 62 | * } |
JMF | 12:0071cb144c7a | 63 | */ |
JMF | 12:0071cb144c7a | 64 | static int pk_write_rsa_pubkey( unsigned char **p, unsigned char *start, |
JMF | 12:0071cb144c7a | 65 | mbedtls_rsa_context *rsa ) |
JMF | 12:0071cb144c7a | 66 | { |
JMF | 12:0071cb144c7a | 67 | int ret; |
JMF | 12:0071cb144c7a | 68 | size_t len = 0; |
JMF | 12:0071cb144c7a | 69 | |
JMF | 12:0071cb144c7a | 70 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( p, start, &rsa->E ) ); |
JMF | 12:0071cb144c7a | 71 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( p, start, &rsa->N ) ); |
JMF | 12:0071cb144c7a | 72 | |
JMF | 12:0071cb144c7a | 73 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) ); |
JMF | 12:0071cb144c7a | 74 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_CONSTRUCTED | |
JMF | 12:0071cb144c7a | 75 | MBEDTLS_ASN1_SEQUENCE ) ); |
JMF | 12:0071cb144c7a | 76 | |
JMF | 12:0071cb144c7a | 77 | return( (int) len ); |
JMF | 12:0071cb144c7a | 78 | } |
JMF | 12:0071cb144c7a | 79 | #endif /* MBEDTLS_RSA_C */ |
JMF | 12:0071cb144c7a | 80 | |
JMF | 12:0071cb144c7a | 81 | #if defined(MBEDTLS_ECP_C) |
JMF | 12:0071cb144c7a | 82 | /* |
JMF | 12:0071cb144c7a | 83 | * EC public key is an EC point |
JMF | 12:0071cb144c7a | 84 | */ |
JMF | 12:0071cb144c7a | 85 | static int pk_write_ec_pubkey( unsigned char **p, unsigned char *start, |
JMF | 12:0071cb144c7a | 86 | mbedtls_ecp_keypair *ec ) |
JMF | 12:0071cb144c7a | 87 | { |
JMF | 12:0071cb144c7a | 88 | int ret; |
JMF | 12:0071cb144c7a | 89 | size_t len = 0; |
JMF | 12:0071cb144c7a | 90 | unsigned char buf[MBEDTLS_ECP_MAX_PT_LEN]; |
JMF | 12:0071cb144c7a | 91 | |
JMF | 12:0071cb144c7a | 92 | if( ( ret = mbedtls_ecp_point_write_binary( &ec->grp, &ec->Q, |
JMF | 12:0071cb144c7a | 93 | MBEDTLS_ECP_PF_UNCOMPRESSED, |
JMF | 12:0071cb144c7a | 94 | &len, buf, sizeof( buf ) ) ) != 0 ) |
JMF | 12:0071cb144c7a | 95 | { |
JMF | 12:0071cb144c7a | 96 | return( ret ); |
JMF | 12:0071cb144c7a | 97 | } |
JMF | 12:0071cb144c7a | 98 | |
JMF | 12:0071cb144c7a | 99 | if( *p < start || (size_t)( *p - start ) < len ) |
JMF | 12:0071cb144c7a | 100 | return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL ); |
JMF | 12:0071cb144c7a | 101 | |
JMF | 12:0071cb144c7a | 102 | *p -= len; |
JMF | 12:0071cb144c7a | 103 | memcpy( *p, buf, len ); |
JMF | 12:0071cb144c7a | 104 | |
JMF | 12:0071cb144c7a | 105 | return( (int) len ); |
JMF | 12:0071cb144c7a | 106 | } |
JMF | 12:0071cb144c7a | 107 | |
JMF | 12:0071cb144c7a | 108 | /* |
JMF | 12:0071cb144c7a | 109 | * ECParameters ::= CHOICE { |
JMF | 12:0071cb144c7a | 110 | * namedCurve OBJECT IDENTIFIER |
JMF | 12:0071cb144c7a | 111 | * } |
JMF | 12:0071cb144c7a | 112 | */ |
JMF | 12:0071cb144c7a | 113 | static int pk_write_ec_param( unsigned char **p, unsigned char *start, |
JMF | 12:0071cb144c7a | 114 | mbedtls_ecp_keypair *ec ) |
JMF | 12:0071cb144c7a | 115 | { |
JMF | 12:0071cb144c7a | 116 | int ret; |
JMF | 12:0071cb144c7a | 117 | size_t len = 0; |
JMF | 12:0071cb144c7a | 118 | const char *oid; |
JMF | 12:0071cb144c7a | 119 | size_t oid_len; |
JMF | 12:0071cb144c7a | 120 | |
JMF | 12:0071cb144c7a | 121 | if( ( ret = mbedtls_oid_get_oid_by_ec_grp( ec->grp.id, &oid, &oid_len ) ) != 0 ) |
JMF | 12:0071cb144c7a | 122 | return( ret ); |
JMF | 12:0071cb144c7a | 123 | |
JMF | 12:0071cb144c7a | 124 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_oid( p, start, oid, oid_len ) ); |
JMF | 12:0071cb144c7a | 125 | |
JMF | 12:0071cb144c7a | 126 | return( (int) len ); |
JMF | 12:0071cb144c7a | 127 | } |
JMF | 12:0071cb144c7a | 128 | #endif /* MBEDTLS_ECP_C */ |
JMF | 12:0071cb144c7a | 129 | |
JMF | 12:0071cb144c7a | 130 | int mbedtls_pk_write_pubkey( unsigned char **p, unsigned char *start, |
JMF | 12:0071cb144c7a | 131 | const mbedtls_pk_context *key ) |
JMF | 12:0071cb144c7a | 132 | { |
JMF | 12:0071cb144c7a | 133 | int ret; |
JMF | 12:0071cb144c7a | 134 | size_t len = 0; |
JMF | 12:0071cb144c7a | 135 | |
JMF | 12:0071cb144c7a | 136 | #if defined(MBEDTLS_RSA_C) |
JMF | 12:0071cb144c7a | 137 | if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_RSA ) |
JMF | 12:0071cb144c7a | 138 | MBEDTLS_ASN1_CHK_ADD( len, pk_write_rsa_pubkey( p, start, mbedtls_pk_rsa( *key ) ) ); |
JMF | 12:0071cb144c7a | 139 | else |
JMF | 12:0071cb144c7a | 140 | #endif |
JMF | 12:0071cb144c7a | 141 | #if defined(MBEDTLS_ECP_C) |
JMF | 12:0071cb144c7a | 142 | if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_ECKEY ) |
JMF | 12:0071cb144c7a | 143 | MBEDTLS_ASN1_CHK_ADD( len, pk_write_ec_pubkey( p, start, mbedtls_pk_ec( *key ) ) ); |
JMF | 12:0071cb144c7a | 144 | else |
JMF | 12:0071cb144c7a | 145 | #endif |
JMF | 12:0071cb144c7a | 146 | return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE ); |
JMF | 12:0071cb144c7a | 147 | |
JMF | 12:0071cb144c7a | 148 | return( (int) len ); |
JMF | 12:0071cb144c7a | 149 | } |
JMF | 12:0071cb144c7a | 150 | |
JMF | 12:0071cb144c7a | 151 | int mbedtls_pk_write_pubkey_der( mbedtls_pk_context *key, unsigned char *buf, size_t size ) |
JMF | 12:0071cb144c7a | 152 | { |
JMF | 12:0071cb144c7a | 153 | int ret; |
JMF | 12:0071cb144c7a | 154 | unsigned char *c; |
JMF | 12:0071cb144c7a | 155 | size_t len = 0, par_len = 0, oid_len; |
JMF | 12:0071cb144c7a | 156 | const char *oid; |
JMF | 12:0071cb144c7a | 157 | |
JMF | 12:0071cb144c7a | 158 | c = buf + size; |
JMF | 12:0071cb144c7a | 159 | |
JMF | 12:0071cb144c7a | 160 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_pk_write_pubkey( &c, buf, key ) ); |
JMF | 12:0071cb144c7a | 161 | |
JMF | 12:0071cb144c7a | 162 | if( c - buf < 1 ) |
JMF | 12:0071cb144c7a | 163 | return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL ); |
JMF | 12:0071cb144c7a | 164 | |
JMF | 12:0071cb144c7a | 165 | /* |
JMF | 12:0071cb144c7a | 166 | * SubjectPublicKeyInfo ::= SEQUENCE { |
JMF | 12:0071cb144c7a | 167 | * algorithm AlgorithmIdentifier, |
JMF | 12:0071cb144c7a | 168 | * subjectPublicKey BIT STRING } |
JMF | 12:0071cb144c7a | 169 | */ |
JMF | 12:0071cb144c7a | 170 | *--c = 0; |
JMF | 12:0071cb144c7a | 171 | len += 1; |
JMF | 12:0071cb144c7a | 172 | |
JMF | 12:0071cb144c7a | 173 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) ); |
JMF | 12:0071cb144c7a | 174 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_BIT_STRING ) ); |
JMF | 12:0071cb144c7a | 175 | |
JMF | 12:0071cb144c7a | 176 | if( ( ret = mbedtls_oid_get_oid_by_pk_alg( mbedtls_pk_get_type( key ), |
JMF | 12:0071cb144c7a | 177 | &oid, &oid_len ) ) != 0 ) |
JMF | 12:0071cb144c7a | 178 | { |
JMF | 12:0071cb144c7a | 179 | return( ret ); |
JMF | 12:0071cb144c7a | 180 | } |
JMF | 12:0071cb144c7a | 181 | |
JMF | 12:0071cb144c7a | 182 | #if defined(MBEDTLS_ECP_C) |
JMF | 12:0071cb144c7a | 183 | if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_ECKEY ) |
JMF | 12:0071cb144c7a | 184 | { |
JMF | 12:0071cb144c7a | 185 | MBEDTLS_ASN1_CHK_ADD( par_len, pk_write_ec_param( &c, buf, mbedtls_pk_ec( *key ) ) ); |
JMF | 12:0071cb144c7a | 186 | } |
JMF | 12:0071cb144c7a | 187 | #endif |
JMF | 12:0071cb144c7a | 188 | |
JMF | 12:0071cb144c7a | 189 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_algorithm_identifier( &c, buf, oid, oid_len, |
JMF | 12:0071cb144c7a | 190 | par_len ) ); |
JMF | 12:0071cb144c7a | 191 | |
JMF | 12:0071cb144c7a | 192 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) ); |
JMF | 12:0071cb144c7a | 193 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_CONSTRUCTED | |
JMF | 12:0071cb144c7a | 194 | MBEDTLS_ASN1_SEQUENCE ) ); |
JMF | 12:0071cb144c7a | 195 | |
JMF | 12:0071cb144c7a | 196 | return( (int) len ); |
JMF | 12:0071cb144c7a | 197 | } |
JMF | 12:0071cb144c7a | 198 | |
JMF | 12:0071cb144c7a | 199 | int mbedtls_pk_write_key_der( mbedtls_pk_context *key, unsigned char *buf, size_t size ) |
JMF | 12:0071cb144c7a | 200 | { |
JMF | 12:0071cb144c7a | 201 | int ret; |
JMF | 12:0071cb144c7a | 202 | unsigned char *c = buf + size; |
JMF | 12:0071cb144c7a | 203 | size_t len = 0; |
JMF | 12:0071cb144c7a | 204 | |
JMF | 12:0071cb144c7a | 205 | #if defined(MBEDTLS_RSA_C) |
JMF | 12:0071cb144c7a | 206 | if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_RSA ) |
JMF | 12:0071cb144c7a | 207 | { |
JMF | 12:0071cb144c7a | 208 | mbedtls_rsa_context *rsa = mbedtls_pk_rsa( *key ); |
JMF | 12:0071cb144c7a | 209 | |
JMF | 12:0071cb144c7a | 210 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, buf, &rsa->QP ) ); |
JMF | 12:0071cb144c7a | 211 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, buf, &rsa->DQ ) ); |
JMF | 12:0071cb144c7a | 212 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, buf, &rsa->DP ) ); |
JMF | 12:0071cb144c7a | 213 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, buf, &rsa->Q ) ); |
JMF | 12:0071cb144c7a | 214 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, buf, &rsa->P ) ); |
JMF | 12:0071cb144c7a | 215 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, buf, &rsa->D ) ); |
JMF | 12:0071cb144c7a | 216 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, buf, &rsa->E ) ); |
JMF | 12:0071cb144c7a | 217 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, buf, &rsa->N ) ); |
JMF | 12:0071cb144c7a | 218 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_int( &c, buf, 0 ) ); |
JMF | 12:0071cb144c7a | 219 | |
JMF | 12:0071cb144c7a | 220 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) ); |
JMF | 12:0071cb144c7a | 221 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_CONSTRUCTED | |
JMF | 12:0071cb144c7a | 222 | MBEDTLS_ASN1_SEQUENCE ) ); |
JMF | 12:0071cb144c7a | 223 | } |
JMF | 12:0071cb144c7a | 224 | else |
JMF | 12:0071cb144c7a | 225 | #endif /* MBEDTLS_RSA_C */ |
JMF | 12:0071cb144c7a | 226 | #if defined(MBEDTLS_ECP_C) |
JMF | 12:0071cb144c7a | 227 | if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_ECKEY ) |
JMF | 12:0071cb144c7a | 228 | { |
JMF | 12:0071cb144c7a | 229 | mbedtls_ecp_keypair *ec = mbedtls_pk_ec( *key ); |
JMF | 12:0071cb144c7a | 230 | size_t pub_len = 0, par_len = 0; |
JMF | 12:0071cb144c7a | 231 | |
JMF | 12:0071cb144c7a | 232 | /* |
JMF | 12:0071cb144c7a | 233 | * RFC 5915, or SEC1 Appendix C.4 |
JMF | 12:0071cb144c7a | 234 | * |
JMF | 12:0071cb144c7a | 235 | * ECPrivateKey ::= SEQUENCE { |
JMF | 12:0071cb144c7a | 236 | * version INTEGER { ecPrivkeyVer1(1) } (ecPrivkeyVer1), |
JMF | 12:0071cb144c7a | 237 | * privateKey OCTET STRING, |
JMF | 12:0071cb144c7a | 238 | * parameters [0] ECParameters {{ NamedCurve }} OPTIONAL, |
JMF | 12:0071cb144c7a | 239 | * publicKey [1] BIT STRING OPTIONAL |
JMF | 12:0071cb144c7a | 240 | * } |
JMF | 12:0071cb144c7a | 241 | */ |
JMF | 12:0071cb144c7a | 242 | |
JMF | 12:0071cb144c7a | 243 | /* publicKey */ |
JMF | 12:0071cb144c7a | 244 | MBEDTLS_ASN1_CHK_ADD( pub_len, pk_write_ec_pubkey( &c, buf, ec ) ); |
JMF | 12:0071cb144c7a | 245 | |
JMF | 12:0071cb144c7a | 246 | if( c - buf < 1 ) |
JMF | 12:0071cb144c7a | 247 | return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL ); |
JMF | 12:0071cb144c7a | 248 | *--c = 0; |
JMF | 12:0071cb144c7a | 249 | pub_len += 1; |
JMF | 12:0071cb144c7a | 250 | |
JMF | 12:0071cb144c7a | 251 | MBEDTLS_ASN1_CHK_ADD( pub_len, mbedtls_asn1_write_len( &c, buf, pub_len ) ); |
JMF | 12:0071cb144c7a | 252 | MBEDTLS_ASN1_CHK_ADD( pub_len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_BIT_STRING ) ); |
JMF | 12:0071cb144c7a | 253 | |
JMF | 12:0071cb144c7a | 254 | MBEDTLS_ASN1_CHK_ADD( pub_len, mbedtls_asn1_write_len( &c, buf, pub_len ) ); |
JMF | 12:0071cb144c7a | 255 | MBEDTLS_ASN1_CHK_ADD( pub_len, mbedtls_asn1_write_tag( &c, buf, |
JMF | 12:0071cb144c7a | 256 | MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 1 ) ); |
JMF | 12:0071cb144c7a | 257 | len += pub_len; |
JMF | 12:0071cb144c7a | 258 | |
JMF | 12:0071cb144c7a | 259 | /* parameters */ |
JMF | 12:0071cb144c7a | 260 | MBEDTLS_ASN1_CHK_ADD( par_len, pk_write_ec_param( &c, buf, ec ) ); |
JMF | 12:0071cb144c7a | 261 | |
JMF | 12:0071cb144c7a | 262 | MBEDTLS_ASN1_CHK_ADD( par_len, mbedtls_asn1_write_len( &c, buf, par_len ) ); |
JMF | 12:0071cb144c7a | 263 | MBEDTLS_ASN1_CHK_ADD( par_len, mbedtls_asn1_write_tag( &c, buf, |
JMF | 12:0071cb144c7a | 264 | MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_CONSTRUCTED | 0 ) ); |
JMF | 12:0071cb144c7a | 265 | len += par_len; |
JMF | 12:0071cb144c7a | 266 | |
JMF | 12:0071cb144c7a | 267 | /* privateKey: write as MPI then fix tag */ |
JMF | 12:0071cb144c7a | 268 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, buf, &ec->d ) ); |
JMF | 12:0071cb144c7a | 269 | *c = MBEDTLS_ASN1_OCTET_STRING; |
JMF | 12:0071cb144c7a | 270 | |
JMF | 12:0071cb144c7a | 271 | /* version */ |
JMF | 12:0071cb144c7a | 272 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_int( &c, buf, 1 ) ); |
JMF | 12:0071cb144c7a | 273 | |
JMF | 12:0071cb144c7a | 274 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) ); |
JMF | 12:0071cb144c7a | 275 | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_CONSTRUCTED | |
JMF | 12:0071cb144c7a | 276 | MBEDTLS_ASN1_SEQUENCE ) ); |
JMF | 12:0071cb144c7a | 277 | } |
JMF | 12:0071cb144c7a | 278 | else |
JMF | 12:0071cb144c7a | 279 | #endif /* MBEDTLS_ECP_C */ |
JMF | 12:0071cb144c7a | 280 | return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE ); |
JMF | 12:0071cb144c7a | 281 | |
JMF | 12:0071cb144c7a | 282 | return( (int) len ); |
JMF | 12:0071cb144c7a | 283 | } |
JMF | 12:0071cb144c7a | 284 | |
JMF | 12:0071cb144c7a | 285 | #if defined(MBEDTLS_PEM_WRITE_C) |
JMF | 12:0071cb144c7a | 286 | |
JMF | 12:0071cb144c7a | 287 | #define PEM_BEGIN_PUBLIC_KEY "-----BEGIN PUBLIC KEY-----\n" |
JMF | 12:0071cb144c7a | 288 | #define PEM_END_PUBLIC_KEY "-----END PUBLIC KEY-----\n" |
JMF | 12:0071cb144c7a | 289 | |
JMF | 12:0071cb144c7a | 290 | #define PEM_BEGIN_PRIVATE_KEY_RSA "-----BEGIN RSA PRIVATE KEY-----\n" |
JMF | 12:0071cb144c7a | 291 | #define PEM_END_PRIVATE_KEY_RSA "-----END RSA PRIVATE KEY-----\n" |
JMF | 12:0071cb144c7a | 292 | #define PEM_BEGIN_PRIVATE_KEY_EC "-----BEGIN EC PRIVATE KEY-----\n" |
JMF | 12:0071cb144c7a | 293 | #define PEM_END_PRIVATE_KEY_EC "-----END EC PRIVATE KEY-----\n" |
JMF | 12:0071cb144c7a | 294 | |
JMF | 12:0071cb144c7a | 295 | /* |
JMF | 12:0071cb144c7a | 296 | * Max sizes of key per types. Shown as tag + len (+ content). |
JMF | 12:0071cb144c7a | 297 | */ |
JMF | 12:0071cb144c7a | 298 | |
JMF | 12:0071cb144c7a | 299 | #if defined(MBEDTLS_RSA_C) |
JMF | 12:0071cb144c7a | 300 | /* |
JMF | 12:0071cb144c7a | 301 | * RSA public keys: |
JMF | 12:0071cb144c7a | 302 | * SubjectPublicKeyInfo ::= SEQUENCE { 1 + 3 |
JMF | 12:0071cb144c7a | 303 | * algorithm AlgorithmIdentifier, 1 + 1 (sequence) |
JMF | 12:0071cb144c7a | 304 | * + 1 + 1 + 9 (rsa oid) |
JMF | 12:0071cb144c7a | 305 | * + 1 + 1 (params null) |
JMF | 12:0071cb144c7a | 306 | * subjectPublicKey BIT STRING } 1 + 3 + (1 + below) |
JMF | 12:0071cb144c7a | 307 | * RSAPublicKey ::= SEQUENCE { 1 + 3 |
JMF | 12:0071cb144c7a | 308 | * modulus INTEGER, -- n 1 + 3 + MPI_MAX + 1 |
JMF | 12:0071cb144c7a | 309 | * publicExponent INTEGER -- e 1 + 3 + MPI_MAX + 1 |
JMF | 12:0071cb144c7a | 310 | * } |
JMF | 12:0071cb144c7a | 311 | */ |
JMF | 12:0071cb144c7a | 312 | #define RSA_PUB_DER_MAX_BYTES 38 + 2 * MBEDTLS_MPI_MAX_SIZE |
JMF | 12:0071cb144c7a | 313 | |
JMF | 12:0071cb144c7a | 314 | /* |
JMF | 12:0071cb144c7a | 315 | * RSA private keys: |
JMF | 12:0071cb144c7a | 316 | * RSAPrivateKey ::= SEQUENCE { 1 + 3 |
JMF | 12:0071cb144c7a | 317 | * version Version, 1 + 1 + 1 |
JMF | 12:0071cb144c7a | 318 | * modulus INTEGER, 1 + 3 + MPI_MAX + 1 |
JMF | 12:0071cb144c7a | 319 | * publicExponent INTEGER, 1 + 3 + MPI_MAX + 1 |
JMF | 12:0071cb144c7a | 320 | * privateExponent INTEGER, 1 + 3 + MPI_MAX + 1 |
JMF | 12:0071cb144c7a | 321 | * prime1 INTEGER, 1 + 3 + MPI_MAX / 2 + 1 |
JMF | 12:0071cb144c7a | 322 | * prime2 INTEGER, 1 + 3 + MPI_MAX / 2 + 1 |
JMF | 12:0071cb144c7a | 323 | * exponent1 INTEGER, 1 + 3 + MPI_MAX / 2 + 1 |
JMF | 12:0071cb144c7a | 324 | * exponent2 INTEGER, 1 + 3 + MPI_MAX / 2 + 1 |
JMF | 12:0071cb144c7a | 325 | * coefficient INTEGER, 1 + 3 + MPI_MAX / 2 + 1 |
JMF | 12:0071cb144c7a | 326 | * otherPrimeInfos OtherPrimeInfos OPTIONAL 0 (not supported) |
JMF | 12:0071cb144c7a | 327 | * } |
JMF | 12:0071cb144c7a | 328 | */ |
JMF | 12:0071cb144c7a | 329 | #define MPI_MAX_SIZE_2 MBEDTLS_MPI_MAX_SIZE / 2 + \ |
JMF | 12:0071cb144c7a | 330 | MBEDTLS_MPI_MAX_SIZE % 2 |
JMF | 12:0071cb144c7a | 331 | #define RSA_PRV_DER_MAX_BYTES 47 + 3 * MBEDTLS_MPI_MAX_SIZE \ |
JMF | 12:0071cb144c7a | 332 | + 5 * MPI_MAX_SIZE_2 |
JMF | 12:0071cb144c7a | 333 | |
JMF | 12:0071cb144c7a | 334 | #else /* MBEDTLS_RSA_C */ |
JMF | 12:0071cb144c7a | 335 | |
JMF | 12:0071cb144c7a | 336 | #define RSA_PUB_DER_MAX_BYTES 0 |
JMF | 12:0071cb144c7a | 337 | #define RSA_PRV_DER_MAX_BYTES 0 |
JMF | 12:0071cb144c7a | 338 | |
JMF | 12:0071cb144c7a | 339 | #endif /* MBEDTLS_RSA_C */ |
JMF | 12:0071cb144c7a | 340 | |
JMF | 12:0071cb144c7a | 341 | #if defined(MBEDTLS_ECP_C) |
JMF | 12:0071cb144c7a | 342 | /* |
JMF | 12:0071cb144c7a | 343 | * EC public keys: |
JMF | 12:0071cb144c7a | 344 | * SubjectPublicKeyInfo ::= SEQUENCE { 1 + 2 |
JMF | 12:0071cb144c7a | 345 | * algorithm AlgorithmIdentifier, 1 + 1 (sequence) |
JMF | 12:0071cb144c7a | 346 | * + 1 + 1 + 7 (ec oid) |
JMF | 12:0071cb144c7a | 347 | * + 1 + 1 + 9 (namedCurve oid) |
JMF | 12:0071cb144c7a | 348 | * subjectPublicKey BIT STRING 1 + 2 + 1 [1] |
JMF | 12:0071cb144c7a | 349 | * + 1 (point format) [1] |
JMF | 12:0071cb144c7a | 350 | * + 2 * ECP_MAX (coords) [1] |
JMF | 12:0071cb144c7a | 351 | * } |
JMF | 12:0071cb144c7a | 352 | */ |
JMF | 12:0071cb144c7a | 353 | #define ECP_PUB_DER_MAX_BYTES 30 + 2 * MBEDTLS_ECP_MAX_BYTES |
JMF | 12:0071cb144c7a | 354 | |
JMF | 12:0071cb144c7a | 355 | /* |
JMF | 12:0071cb144c7a | 356 | * EC private keys: |
JMF | 12:0071cb144c7a | 357 | * ECPrivateKey ::= SEQUENCE { 1 + 2 |
JMF | 12:0071cb144c7a | 358 | * version INTEGER , 1 + 1 + 1 |
JMF | 12:0071cb144c7a | 359 | * privateKey OCTET STRING, 1 + 1 + ECP_MAX |
JMF | 12:0071cb144c7a | 360 | * parameters [0] ECParameters OPTIONAL, 1 + 1 + (1 + 1 + 9) |
JMF | 12:0071cb144c7a | 361 | * publicKey [1] BIT STRING OPTIONAL 1 + 2 + [1] above |
JMF | 12:0071cb144c7a | 362 | * } |
JMF | 12:0071cb144c7a | 363 | */ |
JMF | 12:0071cb144c7a | 364 | #define ECP_PRV_DER_MAX_BYTES 29 + 3 * MBEDTLS_ECP_MAX_BYTES |
JMF | 12:0071cb144c7a | 365 | |
JMF | 12:0071cb144c7a | 366 | #else /* MBEDTLS_ECP_C */ |
JMF | 12:0071cb144c7a | 367 | |
JMF | 12:0071cb144c7a | 368 | #define ECP_PUB_DER_MAX_BYTES 0 |
JMF | 12:0071cb144c7a | 369 | #define ECP_PRV_DER_MAX_BYTES 0 |
JMF | 12:0071cb144c7a | 370 | |
JMF | 12:0071cb144c7a | 371 | #endif /* MBEDTLS_ECP_C */ |
JMF | 12:0071cb144c7a | 372 | |
JMF | 12:0071cb144c7a | 373 | #define PUB_DER_MAX_BYTES RSA_PUB_DER_MAX_BYTES > ECP_PUB_DER_MAX_BYTES ? \ |
JMF | 12:0071cb144c7a | 374 | RSA_PUB_DER_MAX_BYTES : ECP_PUB_DER_MAX_BYTES |
JMF | 12:0071cb144c7a | 375 | #define PRV_DER_MAX_BYTES RSA_PRV_DER_MAX_BYTES > ECP_PRV_DER_MAX_BYTES ? \ |
JMF | 12:0071cb144c7a | 376 | RSA_PRV_DER_MAX_BYTES : ECP_PRV_DER_MAX_BYTES |
JMF | 12:0071cb144c7a | 377 | |
JMF | 12:0071cb144c7a | 378 | int mbedtls_pk_write_pubkey_pem( mbedtls_pk_context *key, unsigned char *buf, size_t size ) |
JMF | 12:0071cb144c7a | 379 | { |
JMF | 12:0071cb144c7a | 380 | int ret; |
JMF | 12:0071cb144c7a | 381 | unsigned char output_buf[PUB_DER_MAX_BYTES]; |
JMF | 12:0071cb144c7a | 382 | size_t olen = 0; |
JMF | 12:0071cb144c7a | 383 | |
JMF | 12:0071cb144c7a | 384 | if( ( ret = mbedtls_pk_write_pubkey_der( key, output_buf, |
JMF | 12:0071cb144c7a | 385 | sizeof(output_buf) ) ) < 0 ) |
JMF | 12:0071cb144c7a | 386 | { |
JMF | 12:0071cb144c7a | 387 | return( ret ); |
JMF | 12:0071cb144c7a | 388 | } |
JMF | 12:0071cb144c7a | 389 | |
JMF | 12:0071cb144c7a | 390 | if( ( ret = mbedtls_pem_write_buffer( PEM_BEGIN_PUBLIC_KEY, PEM_END_PUBLIC_KEY, |
JMF | 12:0071cb144c7a | 391 | output_buf + sizeof(output_buf) - ret, |
JMF | 12:0071cb144c7a | 392 | ret, buf, size, &olen ) ) != 0 ) |
JMF | 12:0071cb144c7a | 393 | { |
JMF | 12:0071cb144c7a | 394 | return( ret ); |
JMF | 12:0071cb144c7a | 395 | } |
JMF | 12:0071cb144c7a | 396 | |
JMF | 12:0071cb144c7a | 397 | return( 0 ); |
JMF | 12:0071cb144c7a | 398 | } |
JMF | 12:0071cb144c7a | 399 | |
JMF | 12:0071cb144c7a | 400 | int mbedtls_pk_write_key_pem( mbedtls_pk_context *key, unsigned char *buf, size_t size ) |
JMF | 12:0071cb144c7a | 401 | { |
JMF | 12:0071cb144c7a | 402 | int ret; |
JMF | 12:0071cb144c7a | 403 | unsigned char output_buf[PRV_DER_MAX_BYTES]; |
JMF | 12:0071cb144c7a | 404 | const char *begin, *end; |
JMF | 12:0071cb144c7a | 405 | size_t olen = 0; |
JMF | 12:0071cb144c7a | 406 | |
JMF | 12:0071cb144c7a | 407 | if( ( ret = mbedtls_pk_write_key_der( key, output_buf, sizeof(output_buf) ) ) < 0 ) |
JMF | 12:0071cb144c7a | 408 | return( ret ); |
JMF | 12:0071cb144c7a | 409 | |
JMF | 12:0071cb144c7a | 410 | #if defined(MBEDTLS_RSA_C) |
JMF | 12:0071cb144c7a | 411 | if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_RSA ) |
JMF | 12:0071cb144c7a | 412 | { |
JMF | 12:0071cb144c7a | 413 | begin = PEM_BEGIN_PRIVATE_KEY_RSA; |
JMF | 12:0071cb144c7a | 414 | end = PEM_END_PRIVATE_KEY_RSA; |
JMF | 12:0071cb144c7a | 415 | } |
JMF | 12:0071cb144c7a | 416 | else |
JMF | 12:0071cb144c7a | 417 | #endif |
JMF | 12:0071cb144c7a | 418 | #if defined(MBEDTLS_ECP_C) |
JMF | 12:0071cb144c7a | 419 | if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_ECKEY ) |
JMF | 12:0071cb144c7a | 420 | { |
JMF | 12:0071cb144c7a | 421 | begin = PEM_BEGIN_PRIVATE_KEY_EC; |
JMF | 12:0071cb144c7a | 422 | end = PEM_END_PRIVATE_KEY_EC; |
JMF | 12:0071cb144c7a | 423 | } |
JMF | 12:0071cb144c7a | 424 | else |
JMF | 12:0071cb144c7a | 425 | #endif |
JMF | 12:0071cb144c7a | 426 | return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE ); |
JMF | 12:0071cb144c7a | 427 | |
JMF | 12:0071cb144c7a | 428 | if( ( ret = mbedtls_pem_write_buffer( begin, end, |
JMF | 12:0071cb144c7a | 429 | output_buf + sizeof(output_buf) - ret, |
JMF | 12:0071cb144c7a | 430 | ret, buf, size, &olen ) ) != 0 ) |
JMF | 12:0071cb144c7a | 431 | { |
JMF | 12:0071cb144c7a | 432 | return( ret ); |
JMF | 12:0071cb144c7a | 433 | } |
JMF | 12:0071cb144c7a | 434 | |
JMF | 12:0071cb144c7a | 435 | return( 0 ); |
JMF | 12:0071cb144c7a | 436 | } |
JMF | 12:0071cb144c7a | 437 | #endif /* MBEDTLS_PEM_WRITE_C */ |
JMF | 12:0071cb144c7a | 438 | |
JMF | 12:0071cb144c7a | 439 | #endif /* MBEDTLS_PK_WRITE_C */ |