diff options
Diffstat (limited to 'programs/x509/cert_write.c')
| -rw-r--r-- | programs/x509/cert_write.c | 890 |
1 files changed, 890 insertions, 0 deletions
diff --git a/programs/x509/cert_write.c b/programs/x509/cert_write.c new file mode 100644 index 000000000..a8910d7f6 --- /dev/null +++ b/programs/x509/cert_write.c @@ -0,0 +1,890 @@ +/* + * Certificate generation and signing + * + * Copyright The Mbed TLS Contributors + * 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. + */ + +#include "mbedtls/build_info.h" + +#include "mbedtls/platform.h" + +#if !defined(MBEDTLS_X509_CRT_WRITE_C) || \ + !defined(MBEDTLS_X509_CRT_PARSE_C) || !defined(MBEDTLS_FS_IO) || \ + !defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_CTR_DRBG_C) || \ + !defined(MBEDTLS_ERROR_C) || !defined(MBEDTLS_SHA256_C) || \ + !defined(MBEDTLS_PEM_WRITE_C) +int main( void ) +{ + mbedtls_printf( "MBEDTLS_X509_CRT_WRITE_C and/or MBEDTLS_X509_CRT_PARSE_C and/or " + "MBEDTLS_FS_IO and/or MBEDTLS_SHA256_C and/or " + "MBEDTLS_ENTROPY_C and/or MBEDTLS_CTR_DRBG_C and/or " + "MBEDTLS_ERROR_C not defined.\n"); + mbedtls_exit( 0 ); +} +#else + +#include "mbedtls/x509_crt.h" +#include "mbedtls/x509_csr.h" +#include "mbedtls/oid.h" +#include "mbedtls/entropy.h" +#include "mbedtls/ctr_drbg.h" +#include "mbedtls/md.h" +#include "mbedtls/error.h" + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#define SET_OID(x, oid) \ + do { x.len = MBEDTLS_OID_SIZE(oid); x.p = (unsigned char*)oid; } while( 0 ) + +#if defined(MBEDTLS_X509_CSR_PARSE_C) +#define USAGE_CSR \ + " request_file=%%s default: (empty)\n" \ + " If request_file is specified, subject_key,\n" \ + " subject_pwd and subject_name are ignored!\n" +#else +#define USAGE_CSR "" +#endif /* MBEDTLS_X509_CSR_PARSE_C */ + +#define FORMAT_PEM 0 +#define FORMAT_DER 1 + +#define DFL_ISSUER_CRT "" +#define DFL_REQUEST_FILE "" +#define DFL_SUBJECT_KEY "subject.key" +#define DFL_ISSUER_KEY "ca.key" +#define DFL_SUBJECT_PWD "" +#define DFL_ISSUER_PWD "" +#define DFL_OUTPUT_FILENAME "cert.crt" +#define DFL_SUBJECT_NAME "CN=Cert,O=mbed TLS,C=UK" +#define DFL_ISSUER_NAME "CN=CA,O=mbed TLS,C=UK" +#define DFL_NOT_BEFORE "20010101000000" +#define DFL_NOT_AFTER "20301231235959" +#define DFL_SERIAL "1" +#define DFL_SELFSIGN 0 +#define DFL_IS_CA 0 +#define DFL_MAX_PATHLEN -1 +#define DFL_SIG_ALG MBEDTLS_MD_SHA256 +#define DFL_KEY_USAGE 0 +#define DFL_EXT_KEY_USAGE NULL +#define DFL_NS_CERT_TYPE 0 +#define DFL_VERSION 3 +#define DFL_AUTH_IDENT 1 +#define DFL_SUBJ_IDENT 1 +#define DFL_CONSTRAINTS 1 +#define DFL_DIGEST MBEDTLS_MD_SHA256 +#define DFL_FORMAT FORMAT_PEM + +#define USAGE \ + "\n usage: cert_write param=<>...\n" \ + "\n acceptable parameters:\n" \ + USAGE_CSR \ + " subject_key=%%s default: subject.key\n" \ + " subject_pwd=%%s default: (empty)\n" \ + " subject_name=%%s default: CN=Cert,O=mbed TLS,C=UK\n" \ + "\n" \ + " issuer_crt=%%s default: (empty)\n" \ + " If issuer_crt is specified, issuer_name is\n" \ + " ignored!\n" \ + " issuer_name=%%s default: CN=CA,O=mbed TLS,C=UK\n" \ + "\n" \ + " selfsign=%%d default: 0 (false)\n" \ + " If selfsign is enabled, issuer_name and\n" \ + " issuer_key are required (issuer_crt and\n" \ + " subject_* are ignored\n" \ + " issuer_key=%%s default: ca.key\n" \ + " issuer_pwd=%%s default: (empty)\n" \ + " output_file=%%s default: cert.crt\n" \ + " serial=%%s default: 1\n" \ + " not_before=%%s default: 20010101000000\n"\ + " not_after=%%s default: 20301231235959\n"\ + " is_ca=%%d default: 0 (disabled)\n" \ + " max_pathlen=%%d default: -1 (none)\n" \ + " md=%%s default: SHA256\n" \ + " Supported values (if enabled):\n" \ + " MD5, RIPEMD160, SHA1,\n" \ + " SHA224, SHA256, SHA384, SHA512\n" \ + " version=%%d default: 3\n" \ + " Possible values: 1, 2, 3\n"\ + " subject_identifier=%%s default: 1\n" \ + " Possible values: 0, 1\n" \ + " (Considered for v3 only)\n"\ + " authority_identifier=%%s default: 1\n" \ + " Possible values: 0, 1\n" \ + " (Considered for v3 only)\n"\ + " basic_constraints=%%d default: 1\n" \ + " Possible values: 0, 1\n" \ + " (Considered for v3 only)\n"\ + " key_usage=%%s default: (empty)\n" \ + " Comma-separated-list of values:\n" \ + " digital_signature\n" \ + " non_repudiation\n" \ + " key_encipherment\n" \ + " data_encipherment\n" \ + " key_agreement\n" \ + " key_cert_sign\n" \ + " crl_sign\n" \ + " (Considered for v3 only)\n"\ + " ext_key_usage=%%s default: (empty)\n" \ + " Comma-separated-list of values:\n" \ + " serverAuth\n" \ + " clientAuth\n" \ + " codeSigning\n" \ + " emailProtection\n" \ + " timeStamping\n" \ + " OCSPSigning\n" \ + " ns_cert_type=%%s default: (empty)\n" \ + " Comma-separated-list of values:\n" \ + " ssl_client\n" \ + " ssl_server\n" \ + " email\n" \ + " object_signing\n" \ + " ssl_ca\n" \ + " email_ca\n" \ + " object_signing_ca\n" \ + " format=pem|der default: pem\n" \ + "\n" + + +/* + * global options + */ +struct options +{ + const char *issuer_crt; /* filename of the issuer certificate */ + const char *request_file; /* filename of the certificate request */ + const char *subject_key; /* filename of the subject key file */ + const char *issuer_key; /* filename of the issuer key file */ + const char *subject_pwd; /* password for the subject key file */ + const char *issuer_pwd; /* password for the issuer key file */ + const char *output_file; /* where to store the constructed CRT */ + const char *subject_name; /* subject name for certificate */ + const char *issuer_name; /* issuer name for certificate */ + const char *not_before; /* validity period not before */ + const char *not_after; /* validity period not after */ + const char *serial; /* serial number string */ + int selfsign; /* selfsign the certificate */ + int is_ca; /* is a CA certificate */ + int max_pathlen; /* maximum CA path length */ + int authority_identifier; /* add authority identifier to CRT */ + int subject_identifier; /* add subject identifier to CRT */ + int basic_constraints; /* add basic constraints ext to CRT */ + int version; /* CRT version */ + mbedtls_md_type_t md; /* Hash used for signing */ + unsigned char key_usage; /* key usage flags */ + mbedtls_asn1_sequence *ext_key_usage; /* extended key usages */ + unsigned char ns_cert_type; /* NS cert type */ + int format; /* format */ +} opt; + +int write_certificate( mbedtls_x509write_cert *crt, const char *output_file, + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng ) +{ + int ret; + FILE *f; + unsigned char output_buf[4096]; + unsigned char *output_start; + size_t len = 0; + + memset( output_buf, 0, 4096 ); + if ( opt.format == FORMAT_DER ) + { + ret = mbedtls_x509write_crt_der( crt, output_buf, 4096, + f_rng, p_rng ); + if( ret < 0 ) + return( ret ); + + len = ret; + output_start = output_buf + 4096 - len; + } else { + ret = mbedtls_x509write_crt_pem( crt, output_buf, 4096, + f_rng, p_rng ); + if( ret < 0 ) + return( ret ); + + len = strlen( (char *) output_buf ); + output_start = output_buf; + } + + if( ( f = fopen( output_file, "w" ) ) == NULL ) + return( -1 ); + + if( fwrite( output_start, 1, len, f ) != len ) + { + fclose( f ); + return( -1 ); + } + + fclose( f ); + + return( 0 ); +} + +int main( int argc, char *argv[] ) +{ + int ret = 1; + int exit_code = MBEDTLS_EXIT_FAILURE; + mbedtls_x509_crt issuer_crt; + mbedtls_pk_context loaded_issuer_key, loaded_subject_key; + mbedtls_pk_context *issuer_key = &loaded_issuer_key, + *subject_key = &loaded_subject_key; + char buf[1024]; + char issuer_name[256]; + int i; + char *p, *q, *r; +#if defined(MBEDTLS_X509_CSR_PARSE_C) + char subject_name[256]; + mbedtls_x509_csr csr; +#endif + mbedtls_x509write_cert crt; + mbedtls_mpi serial; + mbedtls_asn1_sequence *ext_key_usage; + mbedtls_entropy_context entropy; + mbedtls_ctr_drbg_context ctr_drbg; + const char *pers = "crt example app"; + + /* + * Set to sane values + */ + mbedtls_x509write_crt_init( &crt ); + mbedtls_pk_init( &loaded_issuer_key ); + mbedtls_pk_init( &loaded_subject_key ); + mbedtls_mpi_init( &serial ); + mbedtls_ctr_drbg_init( &ctr_drbg ); + mbedtls_entropy_init( &entropy ); +#if defined(MBEDTLS_X509_CSR_PARSE_C) + mbedtls_x509_csr_init( &csr ); +#endif + mbedtls_x509_crt_init( &issuer_crt ); + memset( buf, 0, sizeof(buf) ); + + if( argc == 0 ) + { + usage: + mbedtls_printf( USAGE ); + goto exit; + } + + opt.issuer_crt = DFL_ISSUER_CRT; + opt.request_file = DFL_REQUEST_FILE; + opt.subject_key = DFL_SUBJECT_KEY; + opt.issuer_key = DFL_ISSUER_KEY; + opt.subject_pwd = DFL_SUBJECT_PWD; + opt.issuer_pwd = DFL_ISSUER_PWD; + opt.output_file = DFL_OUTPUT_FILENAME; + opt.subject_name = DFL_SUBJECT_NAME; + opt.issuer_name = DFL_ISSUER_NAME; + opt.not_before = DFL_NOT_BEFORE; + opt.not_after = DFL_NOT_AFTER; + opt.serial = DFL_SERIAL; + opt.selfsign = DFL_SELFSIGN; + opt.is_ca = DFL_IS_CA; + opt.max_pathlen = DFL_MAX_PATHLEN; + opt.key_usage = DFL_KEY_USAGE; + opt.ext_key_usage = DFL_EXT_KEY_USAGE; + opt.ns_cert_type = DFL_NS_CERT_TYPE; + opt.version = DFL_VERSION - 1; + opt.md = DFL_DIGEST; + opt.subject_identifier = DFL_SUBJ_IDENT; + opt.authority_identifier = DFL_AUTH_IDENT; + opt.basic_constraints = DFL_CONSTRAINTS; + opt.format = DFL_FORMAT; + + for( i = 1; i < argc; i++ ) + { + + p = argv[i]; + if( ( q = strchr( p, '=' ) ) == NULL ) + goto usage; + *q++ = '\0'; + + if( strcmp( p, "request_file" ) == 0 ) + opt.request_file = q; + else if( strcmp( p, "subject_key" ) == 0 ) + opt.subject_key = q; + else if( strcmp( p, "issuer_key" ) == 0 ) + opt.issuer_key = q; + else if( strcmp( p, "subject_pwd" ) == 0 ) + opt.subject_pwd = q; + else if( strcmp( p, "issuer_pwd" ) == 0 ) + opt.issuer_pwd = q; + else if( strcmp( p, "issuer_crt" ) == 0 ) + opt.issuer_crt = q; + else if( strcmp( p, "output_file" ) == 0 ) + opt.output_file = q; + else if( strcmp( p, "subject_name" ) == 0 ) + { + opt.subject_name = q; + } + else if( strcmp( p, "issuer_name" ) == 0 ) + { + opt.issuer_name = q; + } + else if( strcmp( p, "not_before" ) == 0 ) + { + opt.not_before = q; + } + else if( strcmp( p, "not_after" ) == 0 ) + { + opt.not_after = q; + } + else if( strcmp( p, "serial" ) == 0 ) + { + opt.serial = q; + } + else if( strcmp( p, "authority_identifier" ) == 0 ) + { + opt.authority_identifier = atoi( q ); + if( opt.authority_identifier != 0 && + opt.authority_identifier != 1 ) + { + mbedtls_printf( "Invalid argument for option %s\n", p ); + goto usage; + } + } + else if( strcmp( p, "subject_identifier" ) == 0 ) + { + opt.subject_identifier = atoi( q ); + if( opt.subject_identifier != 0 && + opt.subject_identifier != 1 ) + { + mbedtls_printf( "Invalid argument for option %s\n", p ); + goto usage; + } + } + else if( strcmp( p, "basic_constraints" ) == 0 ) + { + opt.basic_constraints = atoi( q ); + if( opt.basic_constraints != 0 && + opt.basic_constraints != 1 ) + { + mbedtls_printf( "Invalid argument for option %s\n", p ); + goto usage; + } + } + else if( strcmp( p, "md" ) == 0 ) + { + const mbedtls_md_info_t *md_info = + mbedtls_md_info_from_string( q ); + if( md_info == NULL ) + { + mbedtls_printf( "Invalid argument for option %s\n", p ); + goto usage; + } + opt.md = mbedtls_md_get_type( md_info ); + } + else if( strcmp( p, "version" ) == 0 ) + { + opt.version = atoi( q ); + if( opt.version < 1 || opt.version > 3 ) + { + mbedtls_printf( "Invalid argument for option %s\n", p ); + goto usage; + } + opt.version--; + } + else if( strcmp( p, "selfsign" ) == 0 ) + { + opt.selfsign = atoi( q ); + if( opt.selfsign < 0 || opt.selfsign > 1 ) + { + mbedtls_printf( "Invalid argument for option %s\n", p ); + goto usage; + } + } + else if( strcmp( p, "is_ca" ) == 0 ) + { + opt.is_ca = atoi( q ); + if( opt.is_ca < 0 || opt.is_ca > 1 ) + { + mbedtls_printf( "Invalid argument for option %s\n", p ); + goto usage; + } + } + else if( strcmp( p, "max_pathlen" ) == 0 ) + { + opt.max_pathlen = atoi( q ); + if( opt.max_pathlen < -1 || opt.max_pathlen > 127 ) + { + mbedtls_printf( "Invalid argument for option %s\n", p ); + goto usage; + } + } + else if( strcmp( p, "key_usage" ) == 0 ) + { + while( q != NULL ) + { + if( ( r = strchr( q, ',' ) ) != NULL ) + *r++ = '\0'; + + if( strcmp( q, "digital_signature" ) == 0 ) + opt.key_usage |= MBEDTLS_X509_KU_DIGITAL_SIGNATURE; + else if( strcmp( q, "non_repudiation" ) == 0 ) + opt.key_usage |= MBEDTLS_X509_KU_NON_REPUDIATION; + else if( strcmp( q, "key_encipherment" ) == 0 ) + opt.key_usage |= MBEDTLS_X509_KU_KEY_ENCIPHERMENT; + else if( strcmp( q, "data_encipherment" ) == 0 ) + opt.key_usage |= MBEDTLS_X509_KU_DATA_ENCIPHERMENT; + else if( strcmp( q, "key_agreement" ) == 0 ) + opt.key_usage |= MBEDTLS_X509_KU_KEY_AGREEMENT; + else if( strcmp( q, "key_cert_sign" ) == 0 ) + opt.key_usage |= MBEDTLS_X509_KU_KEY_CERT_SIGN; + else if( strcmp( q, "crl_sign" ) == 0 ) + opt.key_usage |= MBEDTLS_X509_KU_CRL_SIGN; + else + { + mbedtls_printf( "Invalid argument for option %s\n", p ); + goto usage; + } + + q = r; + } + } + else if( strcmp( p, "ext_key_usage" ) == 0 ) + { + mbedtls_asn1_sequence **tail = &opt.ext_key_usage; + + while( q != NULL ) + { + if( ( r = strchr( q, ',' ) ) != NULL ) + *r++ = '\0'; + + ext_key_usage = mbedtls_calloc( 1, sizeof(mbedtls_asn1_sequence) ); + ext_key_usage->buf.tag = MBEDTLS_ASN1_OID; + if( strcmp( q, "serverAuth" ) == 0 ) + SET_OID( ext_key_usage->buf, MBEDTLS_OID_SERVER_AUTH ); + else if( strcmp( q, "clientAuth" ) == 0 ) + SET_OID( ext_key_usage->buf, MBEDTLS_OID_CLIENT_AUTH ); + else if( strcmp( q, "codeSigning" ) == 0 ) + SET_OID( ext_key_usage->buf, MBEDTLS_OID_CODE_SIGNING ); + else if( strcmp( q, "emailProtection" ) == 0 ) + SET_OID( ext_key_usage->buf, MBEDTLS_OID_EMAIL_PROTECTION ); + else if( strcmp( q, "timeStamping" ) == 0 ) + SET_OID( ext_key_usage->buf, MBEDTLS_OID_TIME_STAMPING ); + else if( strcmp( q, "OCSPSigning" ) == 0 ) + SET_OID( ext_key_usage->buf, MBEDTLS_OID_OCSP_SIGNING ); + else + { + mbedtls_printf( "Invalid argument for option %s\n", p ); + goto usage; + } + + *tail = ext_key_usage; + tail = &ext_key_usage->next; + + q = r; + } + } + else if( strcmp( p, "ns_cert_type" ) == 0 ) + { + while( q != NULL ) + { + if( ( r = strchr( q, ',' ) ) != NULL ) + *r++ = '\0'; + + if( strcmp( q, "ssl_client" ) == 0 ) + opt.ns_cert_type |= MBEDTLS_X509_NS_CERT_TYPE_SSL_CLIENT; + else if( strcmp( q, "ssl_server" ) == 0 ) + opt.ns_cert_type |= MBEDTLS_X509_NS_CERT_TYPE_SSL_SERVER; + else if( strcmp( q, "email" ) == 0 ) + opt.ns_cert_type |= MBEDTLS_X509_NS_CERT_TYPE_EMAIL; + else if( strcmp( q, "object_signing" ) == 0 ) + opt.ns_cert_type |= MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING; + else if( strcmp( q, "ssl_ca" ) == 0 ) + opt.ns_cert_type |= MBEDTLS_X509_NS_CERT_TYPE_SSL_CA; + else if( strcmp( q, "email_ca" ) == 0 ) + opt.ns_cert_type |= MBEDTLS_X509_NS_CERT_TYPE_EMAIL_CA; + else if( strcmp( q, "object_signing_ca" ) == 0 ) + opt.ns_cert_type |= MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING_CA; + else + { + mbedtls_printf( "Invalid argument for option %s\n", p ); + goto usage; + } + + q = r; + } + } + else if( strcmp( p, "format" ) == 0 ) + { + if ( strcmp(q, "der" ) == 0 ) opt.format = FORMAT_DER; + else if ( strcmp(q, "pem" ) == 0 ) opt.format = FORMAT_PEM; + else + { + mbedtls_printf( "Invalid argument for option %s\n", p ); + goto usage; + } + } + else + goto usage; + } + + mbedtls_printf("\n"); + + /* + * 0. Seed the PRNG + */ + mbedtls_printf( " . Seeding the random number generator..." ); + fflush( stdout ); + + if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy, + (const unsigned char *) pers, + strlen( pers ) ) ) != 0 ) + { + mbedtls_strerror( ret, buf, sizeof(buf) ); + mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned %d - %s\n", + ret, buf ); + goto exit; + } + + mbedtls_printf( " ok\n" ); + + // Parse serial to MPI + // + mbedtls_printf( " . Reading serial number..." ); + fflush( stdout ); + + if( ( ret = mbedtls_mpi_read_string( &serial, 10, opt.serial ) ) != 0 ) + { + mbedtls_strerror( ret, buf, sizeof(buf) ); + mbedtls_printf( " failed\n ! mbedtls_mpi_read_string " + "returned -0x%04x - %s\n\n", (unsigned int) -ret, buf ); + goto exit; + } + + mbedtls_printf( " ok\n" ); + + // Parse issuer certificate if present + // + if( !opt.selfsign && strlen( opt.issuer_crt ) ) + { + /* + * 1.0.a. Load the certificates + */ + mbedtls_printf( " . Loading the issuer certificate ..." ); + fflush( stdout ); + + if( ( ret = mbedtls_x509_crt_parse_file( &issuer_crt, opt.issuer_crt ) ) != 0 ) + { + mbedtls_strerror( ret, buf, sizeof(buf) ); + mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse_file " + "returned -0x%04x - %s\n\n", (unsigned int) -ret, buf ); + goto exit; + } + + ret = mbedtls_x509_dn_gets( issuer_name, sizeof(issuer_name), + &issuer_crt.subject ); + if( ret < 0 ) + { + mbedtls_strerror( ret, buf, sizeof(buf) ); + mbedtls_printf( " failed\n ! mbedtls_x509_dn_gets " + "returned -0x%04x - %s\n\n", (unsigned int) -ret, buf ); + goto exit; + } + + opt.issuer_name = issuer_name; + + mbedtls_printf( " ok\n" ); + } + +#if defined(MBEDTLS_X509_CSR_PARSE_C) + // Parse certificate request if present + // + if( !opt.selfsign && strlen( opt.request_file ) ) + { + /* + * 1.0.b. Load the CSR + */ + mbedtls_printf( " . Loading the certificate request ..." ); + fflush( stdout ); + + if( ( ret = mbedtls_x509_csr_parse_file( &csr, opt.request_file ) ) != 0 ) + { + mbedtls_strerror( ret, buf, sizeof(buf) ); + mbedtls_printf( " failed\n ! mbedtls_x509_csr_parse_file " + "returned -0x%04x - %s\n\n", (unsigned int) -ret, buf ); + goto exit; + } + + ret = mbedtls_x509_dn_gets( subject_name, sizeof(subject_name), + &csr.subject ); + if( ret < 0 ) + { + mbedtls_strerror( ret, buf, sizeof(buf) ); + mbedtls_printf( " failed\n ! mbedtls_x509_dn_gets " + "returned -0x%04x - %s\n\n", (unsigned int) -ret, buf ); + goto exit; + } + + opt.subject_name = subject_name; + subject_key = &csr.pk; + + mbedtls_printf( " ok\n" ); + } +#endif /* MBEDTLS_X509_CSR_PARSE_C */ + + /* + * 1.1. Load the keys + */ + if( !opt.selfsign && !strlen( opt.request_file ) ) + { + mbedtls_printf( " . Loading the subject key ..." ); + fflush( stdout ); + + ret = mbedtls_pk_parse_keyfile( &loaded_subject_key, opt.subject_key, + opt.subject_pwd, mbedtls_ctr_drbg_random, &ctr_drbg ); + if( ret != 0 ) + { + mbedtls_strerror( ret, buf, sizeof(buf) ); + mbedtls_printf( " failed\n ! mbedtls_pk_parse_keyfile " + "returned -0x%04x - %s\n\n", (unsigned int) -ret, buf ); + goto exit; + } + + mbedtls_printf( " ok\n" ); + } + + mbedtls_printf( " . Loading the issuer key ..." ); + fflush( stdout ); + + ret = mbedtls_pk_parse_keyfile( &loaded_issuer_key, opt.issuer_key, + opt.issuer_pwd, mbedtls_ctr_drbg_random, &ctr_drbg ); + if( ret != 0 ) + { + mbedtls_strerror( ret, buf, sizeof(buf) ); + mbedtls_printf( " failed\n ! mbedtls_pk_parse_keyfile " + "returned -x%02x - %s\n\n", (unsigned int) -ret, buf ); + goto exit; + } + + // Check if key and issuer certificate match + // + if( strlen( opt.issuer_crt ) ) + { + if( mbedtls_pk_check_pair( &issuer_crt.pk, issuer_key, + mbedtls_ctr_drbg_random, &ctr_drbg ) != 0 ) + { + mbedtls_printf( " failed\n ! issuer_key does not match " + "issuer certificate\n\n" ); + goto exit; + } + } + + mbedtls_printf( " ok\n" ); + + if( opt.selfsign ) + { + opt.subject_name = opt.issuer_name; + subject_key = issuer_key; + } + + mbedtls_x509write_crt_set_subject_key( &crt, subject_key ); + mbedtls_x509write_crt_set_issuer_key( &crt, issuer_key ); + + /* + * 1.0. Check the names for validity + */ + if( ( ret = mbedtls_x509write_crt_set_subject_name( &crt, opt.subject_name ) ) != 0 ) + { + mbedtls_strerror( ret, buf, sizeof(buf) ); + mbedtls_printf( " failed\n ! mbedtls_x509write_crt_set_subject_name " + "returned -0x%04x - %s\n\n", (unsigned int) -ret, buf ); + goto exit; + } + + if( ( ret = mbedtls_x509write_crt_set_issuer_name( &crt, opt.issuer_name ) ) != 0 ) + { + mbedtls_strerror( ret, buf, sizeof(buf) ); + mbedtls_printf( " failed\n ! mbedtls_x509write_crt_set_issuer_name " + "returned -0x%04x - %s\n\n", (unsigned int) -ret, buf ); + goto exit; + } + + mbedtls_printf( " . Setting certificate values ..." ); + fflush( stdout ); + + mbedtls_x509write_crt_set_version( &crt, opt.version ); + mbedtls_x509write_crt_set_md_alg( &crt, opt.md ); + + ret = mbedtls_x509write_crt_set_serial( &crt, &serial ); + if( ret != 0 ) + { + mbedtls_strerror( ret, buf, sizeof(buf) ); + mbedtls_printf( " failed\n ! mbedtls_x509write_crt_set_serial " + "returned -0x%04x - %s\n\n", (unsigned int) -ret, buf ); + goto exit; + } + + ret = mbedtls_x509write_crt_set_validity( &crt, opt.not_before, opt.not_after ); + if( ret != 0 ) + { + mbedtls_strerror( ret, buf, sizeof(buf) ); + mbedtls_printf( " failed\n ! mbedtls_x509write_crt_set_validity " + "returned -0x%04x - %s\n\n", (unsigned int) -ret, buf ); + goto exit; + } + + mbedtls_printf( " ok\n" ); + + if( opt.version == MBEDTLS_X509_CRT_VERSION_3 && + opt.basic_constraints != 0 ) + { + mbedtls_printf( " . Adding the Basic Constraints extension ..." ); + fflush( stdout ); + + ret = mbedtls_x509write_crt_set_basic_constraints( &crt, opt.is_ca, + opt.max_pathlen ); + if( ret != 0 ) + { + mbedtls_strerror( ret, buf, sizeof(buf) ); + mbedtls_printf( " failed\n ! x509write_crt_set_basic_constraints " + "returned -0x%04x - %s\n\n", (unsigned int) -ret, buf ); + goto exit; + } + + mbedtls_printf( " ok\n" ); + } + +#if defined(MBEDTLS_SHA1_C) + if( opt.version == MBEDTLS_X509_CRT_VERSION_3 && + opt.subject_identifier != 0 ) + { + mbedtls_printf( " . Adding the Subject Key Identifier ..." ); + fflush( stdout ); + + ret = mbedtls_x509write_crt_set_subject_key_identifier( &crt ); + if( ret != 0 ) + { + mbedtls_strerror( ret, buf, sizeof(buf) ); + mbedtls_printf( " failed\n ! mbedtls_x509write_crt_set_subject" + "_key_identifier returned -0x%04x - %s\n\n", + (unsigned int) -ret, buf ); + goto exit; + } + + mbedtls_printf( " ok\n" ); + } + + if( opt.version == MBEDTLS_X509_CRT_VERSION_3 && + opt.authority_identifier != 0 ) + { + mbedtls_printf( " . Adding the Authority Key Identifier ..." ); + fflush( stdout ); + + ret = mbedtls_x509write_crt_set_authority_key_identifier( &crt ); + if( ret != 0 ) + { + mbedtls_strerror( ret, buf, sizeof(buf) ); + mbedtls_printf( " failed\n ! mbedtls_x509write_crt_set_authority_" + "key_identifier returned -0x%04x - %s\n\n", + (unsigned int) -ret, buf ); + goto exit; + } + + mbedtls_printf( " ok\n" ); + } +#endif /* MBEDTLS_SHA1_C */ + + if( opt.version == MBEDTLS_X509_CRT_VERSION_3 && + opt.key_usage != 0 ) + { + mbedtls_printf( " . Adding the Key Usage extension ..." ); + fflush( stdout ); + + ret = mbedtls_x509write_crt_set_key_usage( &crt, opt.key_usage ); + if( ret != 0 ) + { + mbedtls_strerror( ret, buf, sizeof(buf) ); + mbedtls_printf( " failed\n ! mbedtls_x509write_crt_set_key_usage " + "returned -0x%04x - %s\n\n", (unsigned int) -ret, buf ); + goto exit; + } + + mbedtls_printf( " ok\n" ); + } + + if( opt.ext_key_usage ) + { + mbedtls_printf( " . Adding the Extended Key Usage extension ..." ); + fflush( stdout ); + + ret = mbedtls_x509write_crt_set_ext_key_usage( &crt, opt.ext_key_usage ); + if( ret != 0 ) + { + mbedtls_strerror( ret, buf, sizeof(buf) ); + mbedtls_printf( " failed\n ! mbedtls_x509write_crt_set_ext_key_usage returned -0x%02x - %s\n\n", (unsigned int) -ret, buf ); + goto exit; + } + + mbedtls_printf( " ok\n" ); + } + + if( opt.version == MBEDTLS_X509_CRT_VERSION_3 && + opt.ns_cert_type != 0 ) + { + mbedtls_printf( " . Adding the NS Cert Type extension ..." ); + fflush( stdout ); + + ret = mbedtls_x509write_crt_set_ns_cert_type( &crt, opt.ns_cert_type ); + if( ret != 0 ) + { + mbedtls_strerror( ret, buf, sizeof(buf) ); + mbedtls_printf( " failed\n ! mbedtls_x509write_crt_set_ns_cert_type " + "returned -0x%04x - %s\n\n", (unsigned int) -ret, buf ); + goto exit; + } + + mbedtls_printf( " ok\n" ); + } + + /* + * 1.2. Writing the certificate + */ + mbedtls_printf( " . Writing the certificate..." ); + fflush( stdout ); + + if( ( ret = write_certificate( &crt, opt.output_file, + mbedtls_ctr_drbg_random, &ctr_drbg ) ) != 0 ) + { + mbedtls_strerror( ret, buf, sizeof(buf) ); + mbedtls_printf( " failed\n ! write_certificate -0x%04x - %s\n\n", + (unsigned int) -ret, buf ); + goto exit; + } + + mbedtls_printf( " ok\n" ); + + exit_code = MBEDTLS_EXIT_SUCCESS; + +exit: +#if defined(MBEDTLS_X509_CSR_PARSE_C) + mbedtls_x509_csr_free( &csr ); +#endif /* MBEDTLS_X509_CSR_PARSE_C */ + mbedtls_x509_crt_free( &issuer_crt ); + mbedtls_x509write_crt_free( &crt ); + mbedtls_pk_free( &loaded_subject_key ); + mbedtls_pk_free( &loaded_issuer_key ); + mbedtls_mpi_free( &serial ); + mbedtls_ctr_drbg_free( &ctr_drbg ); + mbedtls_entropy_free( &entropy ); + + mbedtls_exit( exit_code ); +} +#endif /* MBEDTLS_X509_CRT_WRITE_C && MBEDTLS_X509_CRT_PARSE_C && + MBEDTLS_FS_IO && MBEDTLS_ENTROPY_C && MBEDTLS_CTR_DRBG_C && + MBEDTLS_ERROR_C && MBEDTLS_PEM_WRITE_C */ |