| /* |
| * X.509 certificate writing |
| * |
| * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved |
| * SPDX-License-Identifier: Apache-2.0 |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may |
| * not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| * This file is part of mbed TLS (https://tls.mbed.org) |
| */ |
| /* |
| * References: |
| * - certificates: RFC 5280, updated by RFC 6818 |
| * - CSRs: PKCS#10 v1.7 aka RFC 2986 |
| * - attributes: PKCS#9 v2.0 aka RFC 2985 |
| */ |
| |
| #if !defined(MBEDTLS_CONFIG_FILE) |
| #include "mbedtls/config.h" |
| #else |
| #include MBEDTLS_CONFIG_FILE |
| #endif |
| |
| #if defined(MBEDTLS_X509_CRT_WRITE_C) |
| |
| #include "mbedtls/x509_crt.h" |
| #include "mbedtls/oid.h" |
| #include "mbedtls/asn1write.h" |
| #include "mbedtls/sha1.h" |
| #include "mbedtls/platform_util.h" |
| |
| #include <string.h> |
| |
| #if defined(MBEDTLS_PEM_WRITE_C) |
| #include "mbedtls/pem.h" |
| #endif /* MBEDTLS_PEM_WRITE_C */ |
| |
| /* |
| * For the currently used signature algorithms the buffer to store any signature |
| * must be at least of size MAX(MBEDTLS_ECDSA_MAX_LEN, MBEDTLS_MPI_MAX_SIZE) |
| */ |
| #if MBEDTLS_ECDSA_MAX_LEN > MBEDTLS_MPI_MAX_SIZE |
| #define SIGNATURE_MAX_SIZE MBEDTLS_ECDSA_MAX_LEN |
| #else |
| #define SIGNATURE_MAX_SIZE MBEDTLS_MPI_MAX_SIZE |
| #endif |
| |
| void mbedtls_x509write_crt_init( mbedtls_x509write_cert *ctx ) |
| { |
| memset( ctx, 0, sizeof( mbedtls_x509write_cert ) ); |
| |
| mbedtls_mpi_init( &ctx->serial ); |
| ctx->version = MBEDTLS_X509_CRT_VERSION_3; |
| } |
| |
| void mbedtls_x509write_crt_free( mbedtls_x509write_cert *ctx ) |
| { |
| mbedtls_mpi_free( &ctx->serial ); |
| |
| mbedtls_asn1_free_named_data_list( &ctx->subject ); |
| mbedtls_asn1_free_named_data_list( &ctx->issuer ); |
| mbedtls_asn1_free_named_data_list( &ctx->extensions ); |
| |
| mbedtls_platform_zeroize( ctx, sizeof( mbedtls_x509write_cert ) ); |
| } |
| |
| void mbedtls_x509write_crt_set_version( mbedtls_x509write_cert *ctx, int version ) |
| { |
| ctx->version = version; |
| } |
| |
| void mbedtls_x509write_crt_set_md_alg( mbedtls_x509write_cert *ctx, mbedtls_md_type_t md_alg ) |
| { |
| ctx->md_alg = md_alg; |
| } |
| |
| void mbedtls_x509write_crt_set_subject_key( mbedtls_x509write_cert *ctx, mbedtls_pk_context *key ) |
| { |
| ctx->subject_key = key; |
| } |
| |
| void mbedtls_x509write_crt_set_issuer_key( mbedtls_x509write_cert *ctx, mbedtls_pk_context *key ) |
| { |
| ctx->issuer_key = key; |
| } |
| |
| int mbedtls_x509write_crt_set_subject_name( mbedtls_x509write_cert *ctx, |
| const char *subject_name ) |
| { |
| return mbedtls_x509_string_to_names( &ctx->subject, subject_name ); |
| } |
| |
| int mbedtls_x509write_crt_set_issuer_name( mbedtls_x509write_cert *ctx, |
| const char *issuer_name ) |
| { |
| return mbedtls_x509_string_to_names( &ctx->issuer, issuer_name ); |
| } |
| |
| int mbedtls_x509write_crt_set_serial( mbedtls_x509write_cert *ctx, const mbedtls_mpi *serial ) |
| { |
| int ret; |
| |
| if( ( ret = mbedtls_mpi_copy( &ctx->serial, serial ) ) != 0 ) |
| return( ret ); |
| |
| return( 0 ); |
| } |
| |
| int mbedtls_x509write_crt_set_validity( mbedtls_x509write_cert *ctx, const char *not_before, |
| const char *not_after ) |
| { |
| if( strlen( not_before ) != MBEDTLS_X509_RFC5280_UTC_TIME_LEN - 1 || |
| strlen( not_after ) != MBEDTLS_X509_RFC5280_UTC_TIME_LEN - 1 ) |
| { |
| return( MBEDTLS_ERR_X509_BAD_INPUT_DATA ); |
| } |
| strncpy( ctx->not_before, not_before, MBEDTLS_X509_RFC5280_UTC_TIME_LEN ); |
| strncpy( ctx->not_after , not_after , MBEDTLS_X509_RFC5280_UTC_TIME_LEN ); |
| ctx->not_before[MBEDTLS_X509_RFC5280_UTC_TIME_LEN - 1] = 'Z'; |
| ctx->not_after[MBEDTLS_X509_RFC5280_UTC_TIME_LEN - 1] = 'Z'; |
| |
| return( 0 ); |
| } |
| |
| int mbedtls_x509write_crt_set_extension( mbedtls_x509write_cert *ctx, |
| const char *oid, size_t oid_len, |
| int critical, |
| const unsigned char *val, size_t val_len ) |
| { |
| return mbedtls_x509_set_extension( &ctx->extensions, oid, oid_len, |
| critical, val, val_len ); |
| } |
| |
| int mbedtls_x509write_crt_set_basic_constraints( mbedtls_x509write_cert *ctx, |
| int is_ca, int max_pathlen ) |
| { |
| int ret; |
| unsigned char buf[9]; |
| unsigned char *c = buf + sizeof(buf); |
| size_t len = 0; |
| |
| memset( buf, 0, sizeof(buf) ); |
| |
| if( is_ca && max_pathlen > 127 ) |
| return( MBEDTLS_ERR_X509_BAD_INPUT_DATA ); |
| |
| if( is_ca ) |
| { |
| if( max_pathlen >= 0 ) |
| { |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_int( &c, buf, max_pathlen ) ); |
| } |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_bool( &c, buf, 1 ) ); |
| } |
| |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) ); |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_CONSTRUCTED | |
| MBEDTLS_ASN1_SEQUENCE ) ); |
| |
| return mbedtls_x509write_crt_set_extension( ctx, MBEDTLS_OID_BASIC_CONSTRAINTS, |
| MBEDTLS_OID_SIZE( MBEDTLS_OID_BASIC_CONSTRAINTS ), |
| 0, buf + sizeof(buf) - len, len ); |
| } |
| |
| #if defined(MBEDTLS_SHA1_C) |
| int mbedtls_x509write_crt_set_subject_key_identifier( mbedtls_x509write_cert *ctx ) |
| { |
| int ret; |
| unsigned char buf[MBEDTLS_MPI_MAX_SIZE * 2 + 20]; /* tag, length + 2xMPI */ |
| unsigned char *c = buf + sizeof(buf); |
| size_t len = 0; |
| |
| memset( buf, 0, sizeof(buf) ); |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_pk_write_pubkey( &c, buf, ctx->subject_key ) ); |
| |
| ret = mbedtls_sha1_ret( buf + sizeof( buf ) - len, len, |
| buf + sizeof( buf ) - 20 ); |
| if( ret != 0 ) |
| return( ret ); |
| c = buf + sizeof( buf ) - 20; |
| len = 20; |
| |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) ); |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_OCTET_STRING ) ); |
| |
| return mbedtls_x509write_crt_set_extension( ctx, MBEDTLS_OID_SUBJECT_KEY_IDENTIFIER, |
| MBEDTLS_OID_SIZE( MBEDTLS_OID_SUBJECT_KEY_IDENTIFIER ), |
| 0, buf + sizeof(buf) - len, len ); |
| } |
| |
| int mbedtls_x509write_crt_set_authority_key_identifier( mbedtls_x509write_cert *ctx ) |
| { |
| int ret; |
| unsigned char buf[MBEDTLS_MPI_MAX_SIZE * 2 + 20]; /* tag, length + 2xMPI */ |
| unsigned char *c = buf + sizeof( buf ); |
| size_t len = 0; |
| |
| memset( buf, 0, sizeof(buf) ); |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_pk_write_pubkey( &c, buf, ctx->issuer_key ) ); |
| |
| ret = mbedtls_sha1_ret( buf + sizeof( buf ) - len, len, |
| buf + sizeof( buf ) - 20 ); |
| if( ret != 0 ) |
| return( ret ); |
| c = buf + sizeof( buf ) - 20; |
| len = 20; |
| |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) ); |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_CONTEXT_SPECIFIC | 0 ) ); |
| |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) ); |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_CONSTRUCTED | |
| MBEDTLS_ASN1_SEQUENCE ) ); |
| |
| return mbedtls_x509write_crt_set_extension( ctx, MBEDTLS_OID_AUTHORITY_KEY_IDENTIFIER, |
| MBEDTLS_OID_SIZE( MBEDTLS_OID_AUTHORITY_KEY_IDENTIFIER ), |
| 0, buf + sizeof( buf ) - len, len ); |
| } |
| #endif /* MBEDTLS_SHA1_C */ |
| |
| static size_t crt_get_unused_bits_for_named_bitstring( unsigned char bitstring, |
| size_t bit_offset ) |
| { |
| size_t unused_bits; |
| |
| /* Count the unused bits removing trailing 0s */ |
| for( unused_bits = bit_offset; unused_bits < 8; unused_bits++ ) |
| if( ( ( bitstring >> unused_bits ) & 0x1 ) != 0 ) |
| break; |
| |
| return( unused_bits ); |
| } |
| |
| int mbedtls_x509write_crt_set_key_usage( mbedtls_x509write_cert *ctx, |
| unsigned int key_usage ) |
| { |
| unsigned char buf[4], ku; |
| unsigned char *c; |
| int ret; |
| size_t unused_bits; |
| const unsigned int allowed_bits = MBEDTLS_X509_KU_DIGITAL_SIGNATURE | |
| MBEDTLS_X509_KU_NON_REPUDIATION | |
| MBEDTLS_X509_KU_KEY_ENCIPHERMENT | |
| MBEDTLS_X509_KU_DATA_ENCIPHERMENT | |
| MBEDTLS_X509_KU_KEY_AGREEMENT | |
| MBEDTLS_X509_KU_KEY_CERT_SIGN | |
| MBEDTLS_X509_KU_CRL_SIGN; |
| |
| /* Check that nothing other than the allowed flags is set */ |
| if( ( key_usage & ~allowed_bits ) != 0 ) |
| return( MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE ); |
| |
| c = buf + 4; |
| ku = (unsigned char)key_usage; |
| unused_bits = crt_get_unused_bits_for_named_bitstring( ku, 1 ); |
| ret = mbedtls_asn1_write_bitstring( &c, buf, &ku, 8 - unused_bits ); |
| |
| if( ret < 0 ) |
| return( ret ); |
| else if( ret < 3 || ret > 4 ) |
| return( MBEDTLS_ERR_X509_INVALID_FORMAT ); |
| |
| ret = mbedtls_x509write_crt_set_extension( ctx, MBEDTLS_OID_KEY_USAGE, |
| MBEDTLS_OID_SIZE( MBEDTLS_OID_KEY_USAGE ), |
| 1, c, (size_t)ret ); |
| if( ret != 0 ) |
| return( ret ); |
| |
| return( 0 ); |
| } |
| |
| int mbedtls_x509write_crt_set_ns_cert_type( mbedtls_x509write_cert *ctx, |
| unsigned char ns_cert_type ) |
| { |
| unsigned char buf[4]; |
| unsigned char *c; |
| size_t unused_bits; |
| int ret; |
| |
| c = buf + 4; |
| |
| unused_bits = crt_get_unused_bits_for_named_bitstring( ns_cert_type, 0 ); |
| ret = mbedtls_asn1_write_bitstring( &c, |
| buf, |
| &ns_cert_type, |
| 8 - unused_bits ); |
| if( ret < 3 || ret > 4 ) |
| return( ret ); |
| |
| ret = mbedtls_x509write_crt_set_extension( ctx, MBEDTLS_OID_NS_CERT_TYPE, |
| MBEDTLS_OID_SIZE( MBEDTLS_OID_NS_CERT_TYPE ), |
| 0, c, (size_t)ret ); |
| if( ret != 0 ) |
| return( ret ); |
| |
| return( 0 ); |
| } |
| |
| static int x509_write_time( unsigned char **p, unsigned char *start, |
| const char *t, size_t size ) |
| { |
| int ret; |
| size_t len = 0; |
| |
| /* |
| * write MBEDTLS_ASN1_UTC_TIME if year < 2050 (2 bytes shorter) |
| */ |
| if( t[0] == '2' && t[1] == '0' && t[2] < '5' ) |
| { |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_raw_buffer( p, start, |
| (const unsigned char *) t + 2, |
| size - 2 ) ); |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) ); |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_UTC_TIME ) ); |
| } |
| else |
| { |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_raw_buffer( p, start, |
| (const unsigned char *) t, |
| size ) ); |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) ); |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_GENERALIZED_TIME ) ); |
| } |
| |
| return( (int) len ); |
| } |
| |
| int mbedtls_x509write_crt_der( mbedtls_x509write_cert *ctx, unsigned char *buf, size_t size, |
| int (*f_rng)(void *, unsigned char *, size_t), |
| void *p_rng ) |
| { |
| int ret; |
| const char *sig_oid; |
| size_t sig_oid_len = 0; |
| unsigned char *c, *c2; |
| unsigned char hash[64]; |
| unsigned char sig[SIGNATURE_MAX_SIZE]; |
| unsigned char tmp_buf[2048]; |
| size_t sub_len = 0, pub_len = 0, sig_and_oid_len = 0, sig_len; |
| size_t len = 0; |
| mbedtls_pk_type_t pk_alg; |
| |
| /* |
| * Prepare data to be signed in tmp_buf |
| */ |
| c = tmp_buf + sizeof( tmp_buf ); |
| |
| /* Signature algorithm needed in TBS, and later for actual signature */ |
| |
| /* There's no direct way of extracting a signature algorithm |
| * (represented as an element of mbedtls_pk_type_t) from a PK instance. */ |
| if( mbedtls_pk_can_do( ctx->issuer_key, MBEDTLS_PK_RSA ) ) |
| pk_alg = MBEDTLS_PK_RSA; |
| else if( mbedtls_pk_can_do( ctx->issuer_key, MBEDTLS_PK_ECDSA ) ) |
| pk_alg = MBEDTLS_PK_ECDSA; |
| else |
| return( MBEDTLS_ERR_X509_INVALID_ALG ); |
| |
| if( ( ret = mbedtls_oid_get_oid_by_sig_alg( pk_alg, ctx->md_alg, |
| &sig_oid, &sig_oid_len ) ) != 0 ) |
| { |
| return( ret ); |
| } |
| |
| /* |
| * Extensions ::= SEQUENCE SIZE (1..MAX) OF Extension |
| */ |
| |
| /* Only for v3 */ |
| if( ctx->version == MBEDTLS_X509_CRT_VERSION_3 ) |
| { |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_x509_write_extensions( &c, tmp_buf, ctx->extensions ) ); |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, tmp_buf, len ) ); |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, tmp_buf, MBEDTLS_ASN1_CONSTRUCTED | |
| MBEDTLS_ASN1_SEQUENCE ) ); |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, tmp_buf, len ) ); |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, tmp_buf, MBEDTLS_ASN1_CONTEXT_SPECIFIC | |
| MBEDTLS_ASN1_CONSTRUCTED | 3 ) ); |
| } |
| |
| /* |
| * SubjectPublicKeyInfo |
| */ |
| MBEDTLS_ASN1_CHK_ADD( pub_len, mbedtls_pk_write_pubkey_der( ctx->subject_key, |
| tmp_buf, c - tmp_buf ) ); |
| c -= pub_len; |
| len += pub_len; |
| |
| /* |
| * Subject ::= Name |
| */ |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_x509_write_names( &c, tmp_buf, ctx->subject ) ); |
| |
| /* |
| * Validity ::= SEQUENCE { |
| * notBefore Time, |
| * notAfter Time } |
| */ |
| sub_len = 0; |
| |
| MBEDTLS_ASN1_CHK_ADD( sub_len, x509_write_time( &c, tmp_buf, ctx->not_after, |
| MBEDTLS_X509_RFC5280_UTC_TIME_LEN ) ); |
| |
| MBEDTLS_ASN1_CHK_ADD( sub_len, x509_write_time( &c, tmp_buf, ctx->not_before, |
| MBEDTLS_X509_RFC5280_UTC_TIME_LEN ) ); |
| |
| len += sub_len; |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, tmp_buf, sub_len ) ); |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, tmp_buf, MBEDTLS_ASN1_CONSTRUCTED | |
| MBEDTLS_ASN1_SEQUENCE ) ); |
| |
| /* |
| * Issuer ::= Name |
| */ |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_x509_write_names( &c, tmp_buf, ctx->issuer ) ); |
| |
| /* |
| * Signature ::= AlgorithmIdentifier |
| */ |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_algorithm_identifier( &c, tmp_buf, |
| sig_oid, strlen( sig_oid ), 0 ) ); |
| |
| /* |
| * Serial ::= INTEGER |
| */ |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_mpi( &c, tmp_buf, &ctx->serial ) ); |
| |
| /* |
| * Version ::= INTEGER { v1(0), v2(1), v3(2) } |
| */ |
| |
| /* Can be omitted for v1 */ |
| if( ctx->version != MBEDTLS_X509_CRT_VERSION_1 ) |
| { |
| sub_len = 0; |
| MBEDTLS_ASN1_CHK_ADD( sub_len, mbedtls_asn1_write_int( &c, tmp_buf, ctx->version ) ); |
| len += sub_len; |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, tmp_buf, sub_len ) ); |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, tmp_buf, MBEDTLS_ASN1_CONTEXT_SPECIFIC | |
| MBEDTLS_ASN1_CONSTRUCTED | 0 ) ); |
| } |
| |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, tmp_buf, len ) ); |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, tmp_buf, MBEDTLS_ASN1_CONSTRUCTED | |
| MBEDTLS_ASN1_SEQUENCE ) ); |
| |
| /* |
| * Make signature |
| */ |
| if( ( ret = mbedtls_md( mbedtls_md_info_from_type( ctx->md_alg ), c, |
| len, hash ) ) != 0 ) |
| { |
| return( ret ); |
| } |
| |
| if( ( ret = mbedtls_pk_sign( ctx->issuer_key, ctx->md_alg, hash, 0, sig, &sig_len, |
| f_rng, p_rng ) ) != 0 ) |
| { |
| return( ret ); |
| } |
| |
| /* |
| * Write data to output buffer |
| */ |
| c2 = buf + size; |
| MBEDTLS_ASN1_CHK_ADD( sig_and_oid_len, mbedtls_x509_write_sig( &c2, buf, |
| sig_oid, sig_oid_len, sig, sig_len ) ); |
| |
| if( len > (size_t)( c2 - buf ) ) |
| return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL ); |
| |
| c2 -= len; |
| memcpy( c2, c, len ); |
| |
| len += sig_and_oid_len; |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c2, buf, len ) ); |
| MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c2, buf, MBEDTLS_ASN1_CONSTRUCTED | |
| MBEDTLS_ASN1_SEQUENCE ) ); |
| |
| return( (int) len ); |
| } |
| |
| #define PEM_BEGIN_CRT "-----BEGIN CERTIFICATE-----\n" |
| #define PEM_END_CRT "-----END CERTIFICATE-----\n" |
| |
| #if defined(MBEDTLS_PEM_WRITE_C) |
| int mbedtls_x509write_crt_pem( mbedtls_x509write_cert *crt, unsigned char *buf, size_t size, |
| int (*f_rng)(void *, unsigned char *, size_t), |
| void *p_rng ) |
| { |
| int ret; |
| unsigned char output_buf[4096]; |
| size_t olen = 0; |
| |
| if( ( ret = mbedtls_x509write_crt_der( crt, output_buf, sizeof(output_buf), |
| f_rng, p_rng ) ) < 0 ) |
| { |
| return( ret ); |
| } |
| |
| if( ( ret = mbedtls_pem_write_buffer( PEM_BEGIN_CRT, PEM_END_CRT, |
| output_buf + sizeof(output_buf) - ret, |
| ret, buf, size, &olen ) ) != 0 ) |
| { |
| return( ret ); |
| } |
| |
| return( 0 ); |
| } |
| #endif /* MBEDTLS_PEM_WRITE_C */ |
| |
| #endif /* MBEDTLS_X509_CRT_WRITE_C */ |