/* * Certificate generation and signing * * Copyright The Mbed TLS Contributors * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later */ #if !defined(MBEDTLS_CONFIG_FILE) #include "mbedtls/config.h" #else #include MBEDTLS_CONFIG_FILE #endif #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/entropy.h" #include "mbedtls/ctr_drbg.h" #include "mbedtls/md.h" #include "mbedtls/error.h" #include #include #include #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 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_KEY_USAGE 0 #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 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" \ " MD2, MD4, 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" \ " 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" \ "\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 */ unsigned char ns_cert_type; /* NS cert type */ } 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]; size_t len = 0; memset(output_buf, 0, 4096); if ((ret = mbedtls_x509write_crt_pem(crt, output_buf, 4096, f_rng, p_rng)) < 0) { return ret; } len = strlen((char *) output_buf); if ((f = fopen(output_file, "w")) == NULL) { return -1; } if (fwrite(output_buf, 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_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, 1024); #if defined(MBEDTLS_USE_PSA_CRYPTO) psa_status_t status = psa_crypto_init(); if (status != PSA_SUCCESS) { mbedtls_fprintf(stderr, "Failed to initialize PSA Crypto implementation: %d\n", (int) status); goto exit; } #endif /* MBEDTLS_USE_PSA_CRYPTO */ if (argc < 2) { 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.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; 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, "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 { 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, 1024); 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, 1024); 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, 1024); 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, 1024); 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, 1024); 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, 1024); 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); if (ret != 0) { mbedtls_strerror(ret, buf, 1024); 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); if (ret != 0) { mbedtls_strerror(ret, buf, 1024); 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) != 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, 1024); 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, 1024); 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, 1024); 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, 1024); 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, 1024); 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, 1024); 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, 1024); 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, 1024); 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.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, 1024); 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, 1024); 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); #if defined(MBEDTLS_USE_PSA_CRYPTO) mbedtls_psa_crypto_free(); #endif /* MBEDTLS_USE_PSA_CRYPTO */ #if defined(_WIN32) mbedtls_printf(" + Press Enter to exit this program.\n"); fflush(stdout); getchar(); #endif 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 */