diff options
Diffstat (limited to 'programs/x509/cert_write.c')
| -rw-r--r-- | programs/x509/cert_write.c | 1016 |
1 files changed, 1016 insertions, 0 deletions
diff --git a/programs/x509/cert_write.c b/programs/x509/cert_write.c new file mode 100644 index 00000000000..0b2575e84a9 --- /dev/null +++ b/programs/x509/cert_write.c @@ -0,0 +1,1016 @@ +/* + * Certificate generation and signing + * + * Copyright The Mbed TLS Contributors + * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later + */ + +#include "mbedtls/build_info.h" + +#include "mbedtls/platform.h" +/* md.h is included this early since MD_CAN_XXX macros are defined there. */ +#include "mbedtls/md.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_MD_CAN_SHA256) || \ + !defined(MBEDTLS_PEM_WRITE_C) || !defined(MBEDTLS_MD_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_MD_CAN_SHA256 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/error.h" +#include "test/helpers.h" + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.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_SERIAL_HEX "1" +#define DFL_EXT_SUBJECTALTNAME "" +#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" \ + " In decimal format; it can be used as\n" \ + " alternative to serial_hex, but it's\n" \ + " limited in max length to\n" \ + " unsigned long long int\n" \ + " serial_hex=%%s default: 1\n" \ + " In hex format; it can be used as\n" \ + " alternative to serial\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" \ + " san=%%s default: (none)\n" \ + " Semicolon-separated-list of values:\n" \ + " DNS:value\n" \ + " URI:value\n" \ + " RFC822:value\n" \ + " IP:value (Only IPv4 is supported)\n" \ + " DN:list of comma separated key=value pairs\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" + +typedef enum { + SERIAL_FRMT_UNSPEC, + SERIAL_FRMT_DEC, + SERIAL_FRMT_HEX +} serial_format_t; + +/* + * 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 */ + mbedtls_x509_san_list *san_list; /* subjectAltName 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 (decimal) */ + const char *serial_hex; /* serial number string (hex) */ + 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 parse_serial_decimal_format(unsigned char *obuf, size_t obufmax, + const char *ibuf, size_t *len) +{ + unsigned long long int dec; + unsigned int remaining_bytes = sizeof(dec); + unsigned char *p = obuf; + unsigned char val; + char *end_ptr = NULL; + + errno = 0; + dec = strtoull(ibuf, &end_ptr, 10); + + if ((errno != 0) || (end_ptr == ibuf)) { + return -1; + } + + *len = 0; + + while (remaining_bytes > 0) { + if (obufmax < (*len + 1)) { + return -1; + } + + val = (dec >> ((remaining_bytes - 1) * 8)) & 0xFF; + + /* Skip leading zeros */ + if ((val != 0) || (*len != 0)) { + *p = val; + (*len)++; + p++; + } + + remaining_bytes--; + } + + 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; + serial_format_t serial_frmt = SERIAL_FRMT_UNSPEC; + unsigned char serial[MBEDTLS_X509_RFC5280_MAX_SERIAL_LEN]; + size_t serial_len; + mbedtls_asn1_sequence *ext_key_usage; + mbedtls_entropy_context entropy; + mbedtls_ctr_drbg_context ctr_drbg; + const char *pers = "crt example app"; + mbedtls_x509_san_list *cur, *prev; + mbedtls_asn1_named_data *ext_san_dirname = NULL; + uint8_t ip[4] = { 0 }; + /* + * Set to sane values + */ + mbedtls_x509write_crt_init(&crt); + mbedtls_pk_init(&loaded_issuer_key); + mbedtls_pk_init(&loaded_subject_key); + 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)); + memset(serial, 0, sizeof(serial)); + +#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.serial_hex = DFL_SERIAL_HEX; + 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; + opt.san_list = NULL; + + 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) { + if (serial_frmt != SERIAL_FRMT_UNSPEC) { + mbedtls_printf("Invalid attempt to set the serial more than once\n"); + goto usage; + } + serial_frmt = SERIAL_FRMT_DEC; + opt.serial = q; + } else if (strcmp(p, "serial_hex") == 0) { + if (serial_frmt != SERIAL_FRMT_UNSPEC) { + mbedtls_printf("Invalid attempt to set the serial more than once\n"); + goto usage; + } + serial_frmt = SERIAL_FRMT_HEX; + opt.serial_hex = 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 if (strcmp(q, "any") == 0) { + SET_OID(ext_key_usage->buf, MBEDTLS_OID_ANY_EXTENDED_KEY_USAGE); + } 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, "san") == 0) { + char *subtype_value; + prev = NULL; + + while (q != NULL) { + char *semicolon; + r = q; + + /* Find the first non-escaped ; occurrence and remove escaped ones */ + do { + if ((semicolon = strchr(r, ';')) != NULL) { + if (*(semicolon-1) != '\\') { + r = semicolon; + break; + } + /* Remove the escape character */ + size_t size_left = strlen(semicolon); + memmove(semicolon-1, semicolon, size_left); + *(semicolon + size_left - 1) = '\0'; + /* r will now point at the character after the semicolon */ + r = semicolon; + } + + } while (semicolon != NULL); + + if (semicolon != NULL) { + *r++ = '\0'; + } else { + r = NULL; + } + + cur = mbedtls_calloc(1, sizeof(mbedtls_x509_san_list)); + if (cur == NULL) { + mbedtls_printf("Not enough memory for subjectAltName list\n"); + goto usage; + } + + cur->next = NULL; + + if ((subtype_value = strchr(q, ':')) != NULL) { + *subtype_value++ = '\0'; + } else { + mbedtls_printf( + "Invalid argument for option SAN: Entry must be of the form TYPE:value\n"); + goto usage; + } + if (strcmp(q, "RFC822") == 0) { + cur->node.type = MBEDTLS_X509_SAN_RFC822_NAME; + } else if (strcmp(q, "URI") == 0) { + cur->node.type = MBEDTLS_X509_SAN_UNIFORM_RESOURCE_IDENTIFIER; + } else if (strcmp(q, "DNS") == 0) { + cur->node.type = MBEDTLS_X509_SAN_DNS_NAME; + } else if (strcmp(q, "IP") == 0) { + size_t ip_addr_len = 0; + cur->node.type = MBEDTLS_X509_SAN_IP_ADDRESS; + ip_addr_len = mbedtls_x509_crt_parse_cn_inet_pton(subtype_value, ip); + if (ip_addr_len == 0) { + mbedtls_printf("mbedtls_x509_crt_parse_cn_inet_pton failed to parse %s\n", + subtype_value); + goto exit; + } + cur->node.san.unstructured_name.p = (unsigned char *) ip; + cur->node.san.unstructured_name.len = sizeof(ip); + } else if (strcmp(q, "DN") == 0) { + cur->node.type = MBEDTLS_X509_SAN_DIRECTORY_NAME; + if ((ret = mbedtls_x509_string_to_names(&ext_san_dirname, + subtype_value)) != 0) { + mbedtls_strerror(ret, buf, sizeof(buf)); + mbedtls_printf( + " failed\n ! mbedtls_x509_string_to_names " + "returned -0x%04x - %s\n\n", + (unsigned int) -ret, buf); + goto exit; + } + cur->node.san.directory_name = *ext_san_dirname; + } else { + mbedtls_free(cur); + goto usage; + } + + if (cur->node.type == MBEDTLS_X509_SAN_RFC822_NAME || + cur->node.type == MBEDTLS_X509_SAN_UNIFORM_RESOURCE_IDENTIFIER || + cur->node.type == MBEDTLS_X509_SAN_DNS_NAME) { + q = subtype_value; + cur->node.san.unstructured_name.p = (unsigned char *) q; + cur->node.san.unstructured_name.len = strlen(q); + } + + if (prev == NULL) { + opt.san_list = cur; + } else { + prev->next = cur; + } + + prev = cur; + 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 (serial_frmt == SERIAL_FRMT_HEX) { + ret = mbedtls_test_unhexify(serial, sizeof(serial), + opt.serial_hex, &serial_len); + } else { // SERIAL_FRMT_DEC || SERIAL_FRMT_UNSPEC + ret = parse_serial_decimal_format(serial, sizeof(serial), + opt.serial, &serial_len); + } + + if (ret != 0) { + mbedtls_printf(" failed\n ! Unable to parse serial\n"); + 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_raw(&crt, serial, serial_len); + if (ret != 0) { + mbedtls_strerror(ret, buf, sizeof(buf)); + mbedtls_printf(" failed\n ! mbedtls_x509write_crt_set_serial_raw " + "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_MD_CAN_SHA1) + 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_MD_CAN_SHA1 */ + + 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.san_list != NULL) { + ret = mbedtls_x509write_crt_set_subject_alternative_name(&crt, opt.san_list); + + if (ret != 0) { + mbedtls_printf( + " failed\n ! mbedtls_x509write_crt_set_subject_alternative_name returned %d", + ret); + goto exit; + } + } + + 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_asn1_free_named_data_list(&ext_san_dirname); + mbedtls_x509_crt_free(&issuer_crt); + mbedtls_x509write_crt_free(&crt); + mbedtls_pk_free(&loaded_subject_key); + mbedtls_pk_free(&loaded_issuer_key); + 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 */ + + 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 */ |