1016 lines
39 KiB
C
1016 lines
39 KiB
C
/*
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* Certificate generation and signing
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*
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* Copyright The Mbed TLS Contributors
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* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
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*/
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#include "mbedtls/build_info.h"
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#include "mbedtls/platform.h"
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/* md.h is included this early since MD_CAN_XXX macros are defined there. */
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#include "mbedtls/md.h"
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#if !defined(MBEDTLS_X509_CRT_WRITE_C) || \
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!defined(MBEDTLS_X509_CRT_PARSE_C) || !defined(MBEDTLS_FS_IO) || \
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!defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_CTR_DRBG_C) || \
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!defined(MBEDTLS_ERROR_C) || !defined(MBEDTLS_MD_CAN_SHA256) || \
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!defined(MBEDTLS_PEM_WRITE_C)
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int main(void)
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{
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mbedtls_printf("MBEDTLS_X509_CRT_WRITE_C and/or MBEDTLS_X509_CRT_PARSE_C and/or "
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"MBEDTLS_FS_IO and/or MBEDTLS_MD_CAN_SHA256 and/or "
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"MBEDTLS_ENTROPY_C and/or MBEDTLS_CTR_DRBG_C and/or "
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"MBEDTLS_ERROR_C not defined.\n");
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mbedtls_exit(0);
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}
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#else
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#include "mbedtls/x509_crt.h"
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#include "mbedtls/x509_csr.h"
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#include "mbedtls/oid.h"
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#include "mbedtls/entropy.h"
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#include "mbedtls/ctr_drbg.h"
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#include "mbedtls/error.h"
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#include "test/helpers.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#define SET_OID(x, oid) \
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do { x.len = MBEDTLS_OID_SIZE(oid); x.p = (unsigned char *) oid; } while (0)
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#if defined(MBEDTLS_X509_CSR_PARSE_C)
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#define USAGE_CSR \
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" request_file=%%s default: (empty)\n" \
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" If request_file is specified, subject_key,\n" \
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" subject_pwd and subject_name are ignored!\n"
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#else
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#define USAGE_CSR ""
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#endif /* MBEDTLS_X509_CSR_PARSE_C */
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#define FORMAT_PEM 0
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#define FORMAT_DER 1
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#define DFL_ISSUER_CRT ""
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#define DFL_REQUEST_FILE ""
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#define DFL_SUBJECT_KEY "subject.key"
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#define DFL_ISSUER_KEY "ca.key"
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#define DFL_SUBJECT_PWD ""
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#define DFL_ISSUER_PWD ""
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#define DFL_OUTPUT_FILENAME "cert.crt"
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#define DFL_SUBJECT_NAME "CN=Cert,O=mbed TLS,C=UK"
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#define DFL_ISSUER_NAME "CN=CA,O=mbed TLS,C=UK"
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#define DFL_NOT_BEFORE "20010101000000"
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#define DFL_NOT_AFTER "20301231235959"
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#define DFL_SERIAL "1"
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#define DFL_SERIAL_HEX "1"
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#define DFL_EXT_SUBJECTALTNAME ""
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#define DFL_SELFSIGN 0
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#define DFL_IS_CA 0
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#define DFL_MAX_PATHLEN -1
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#define DFL_SIG_ALG MBEDTLS_MD_SHA256
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#define DFL_KEY_USAGE 0
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#define DFL_EXT_KEY_USAGE NULL
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#define DFL_NS_CERT_TYPE 0
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#define DFL_VERSION 3
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#define DFL_AUTH_IDENT 1
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#define DFL_SUBJ_IDENT 1
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#define DFL_CONSTRAINTS 1
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#define DFL_DIGEST MBEDTLS_MD_SHA256
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#define DFL_FORMAT FORMAT_PEM
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#define USAGE \
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"\n usage: cert_write param=<>...\n" \
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"\n acceptable parameters:\n" \
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USAGE_CSR \
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" subject_key=%%s default: subject.key\n" \
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" subject_pwd=%%s default: (empty)\n" \
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" subject_name=%%s default: CN=Cert,O=mbed TLS,C=UK\n" \
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"\n" \
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" issuer_crt=%%s default: (empty)\n" \
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" If issuer_crt is specified, issuer_name is\n" \
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" ignored!\n" \
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" issuer_name=%%s default: CN=CA,O=mbed TLS,C=UK\n" \
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"\n" \
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" selfsign=%%d default: 0 (false)\n" \
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" If selfsign is enabled, issuer_name and\n" \
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" issuer_key are required (issuer_crt and\n" \
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" subject_* are ignored\n" \
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" issuer_key=%%s default: ca.key\n" \
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" issuer_pwd=%%s default: (empty)\n" \
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" output_file=%%s default: cert.crt\n" \
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" serial=%%s default: 1\n" \
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" In decimal format; it can be used as\n" \
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" alternative to serial_hex, but it's\n" \
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" limited in max length to\n" \
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" unsigned long long int\n" \
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" serial_hex=%%s default: 1\n" \
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" In hex format; it can be used as\n" \
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" alternative to serial\n" \
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" not_before=%%s default: 20010101000000\n" \
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" not_after=%%s default: 20301231235959\n" \
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" is_ca=%%d default: 0 (disabled)\n" \
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" max_pathlen=%%d default: -1 (none)\n" \
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" md=%%s default: SHA256\n" \
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" Supported values (if enabled):\n" \
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" MD5, RIPEMD160, SHA1,\n" \
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" SHA224, SHA256, SHA384, SHA512\n" \
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" version=%%d default: 3\n" \
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" Possible values: 1, 2, 3\n" \
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" subject_identifier=%%s default: 1\n" \
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" Possible values: 0, 1\n" \
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" (Considered for v3 only)\n" \
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" san=%%s default: (none)\n" \
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" Semicolon-separated-list of values:\n" \
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" DNS:value\n" \
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" URI:value\n" \
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" RFC822:value\n" \
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" IP:value (Only IPv4 is supported)\n" \
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" DN:list of comma separated key=value pairs\n" \
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" authority_identifier=%%s default: 1\n" \
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" Possible values: 0, 1\n" \
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" (Considered for v3 only)\n" \
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" basic_constraints=%%d default: 1\n" \
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" Possible values: 0, 1\n" \
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" (Considered for v3 only)\n" \
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" key_usage=%%s default: (empty)\n" \
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" Comma-separated-list of values:\n" \
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" digital_signature\n" \
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" non_repudiation\n" \
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" key_encipherment\n" \
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" data_encipherment\n" \
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" key_agreement\n" \
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" key_cert_sign\n" \
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" crl_sign\n" \
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" (Considered for v3 only)\n" \
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" ext_key_usage=%%s default: (empty)\n" \
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" Comma-separated-list of values:\n" \
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" serverAuth\n" \
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" clientAuth\n" \
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" codeSigning\n" \
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" emailProtection\n" \
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" timeStamping\n" \
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" OCSPSigning\n" \
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" ns_cert_type=%%s default: (empty)\n" \
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" Comma-separated-list of values:\n" \
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" ssl_client\n" \
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" ssl_server\n" \
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" email\n" \
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" object_signing\n" \
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" ssl_ca\n" \
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" email_ca\n" \
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" object_signing_ca\n" \
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" format=pem|der default: pem\n" \
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"\n"
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typedef enum {
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SERIAL_FRMT_UNSPEC,
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SERIAL_FRMT_DEC,
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SERIAL_FRMT_HEX
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} serial_format_t;
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/*
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* global options
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*/
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struct options {
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const char *issuer_crt; /* filename of the issuer certificate */
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const char *request_file; /* filename of the certificate request */
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const char *subject_key; /* filename of the subject key file */
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const char *issuer_key; /* filename of the issuer key file */
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const char *subject_pwd; /* password for the subject key file */
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const char *issuer_pwd; /* password for the issuer key file */
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const char *output_file; /* where to store the constructed CRT */
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const char *subject_name; /* subject name for certificate */
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mbedtls_x509_san_list *san_list; /* subjectAltName for certificate */
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const char *issuer_name; /* issuer name for certificate */
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const char *not_before; /* validity period not before */
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const char *not_after; /* validity period not after */
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const char *serial; /* serial number string (decimal) */
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const char *serial_hex; /* serial number string (hex) */
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int selfsign; /* selfsign the certificate */
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int is_ca; /* is a CA certificate */
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int max_pathlen; /* maximum CA path length */
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int authority_identifier; /* add authority identifier to CRT */
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int subject_identifier; /* add subject identifier to CRT */
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int basic_constraints; /* add basic constraints ext to CRT */
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int version; /* CRT version */
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mbedtls_md_type_t md; /* Hash used for signing */
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unsigned char key_usage; /* key usage flags */
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mbedtls_asn1_sequence *ext_key_usage; /* extended key usages */
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unsigned char ns_cert_type; /* NS cert type */
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int format; /* format */
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} opt;
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int write_certificate(mbedtls_x509write_cert *crt, const char *output_file,
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int (*f_rng)(void *, unsigned char *, size_t),
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void *p_rng)
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{
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int ret;
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FILE *f;
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unsigned char output_buf[4096];
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unsigned char *output_start;
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size_t len = 0;
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memset(output_buf, 0, 4096);
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if (opt.format == FORMAT_DER) {
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ret = mbedtls_x509write_crt_der(crt, output_buf, 4096,
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f_rng, p_rng);
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if (ret < 0) {
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return ret;
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}
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len = ret;
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output_start = output_buf + 4096 - len;
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} else {
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ret = mbedtls_x509write_crt_pem(crt, output_buf, 4096,
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f_rng, p_rng);
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if (ret < 0) {
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return ret;
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}
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len = strlen((char *) output_buf);
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output_start = output_buf;
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}
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if ((f = fopen(output_file, "w")) == NULL) {
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return -1;
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}
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if (fwrite(output_start, 1, len, f) != len) {
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fclose(f);
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return -1;
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}
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fclose(f);
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return 0;
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}
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int parse_serial_decimal_format(unsigned char *obuf, size_t obufmax,
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const char *ibuf, size_t *len)
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{
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unsigned long long int dec;
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unsigned int remaining_bytes = sizeof(dec);
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unsigned char *p = obuf;
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unsigned char val;
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char *end_ptr = NULL;
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errno = 0;
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dec = strtoull(ibuf, &end_ptr, 10);
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if ((errno != 0) || (end_ptr == ibuf)) {
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return -1;
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}
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*len = 0;
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while (remaining_bytes > 0) {
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if (obufmax < (*len + 1)) {
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return -1;
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}
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val = (dec >> ((remaining_bytes - 1) * 8)) & 0xFF;
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/* Skip leading zeros */
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if ((val != 0) || (*len != 0)) {
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*p = val;
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(*len)++;
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p++;
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}
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remaining_bytes--;
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}
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return 0;
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}
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int main(int argc, char *argv[])
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{
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int ret = 1;
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int exit_code = MBEDTLS_EXIT_FAILURE;
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mbedtls_x509_crt issuer_crt;
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mbedtls_pk_context loaded_issuer_key, loaded_subject_key;
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mbedtls_pk_context *issuer_key = &loaded_issuer_key,
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*subject_key = &loaded_subject_key;
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char buf[1024];
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char issuer_name[256];
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int i;
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char *p, *q, *r;
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#if defined(MBEDTLS_X509_CSR_PARSE_C)
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char subject_name[256];
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mbedtls_x509_csr csr;
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#endif
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mbedtls_x509write_cert crt;
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serial_format_t serial_frmt = SERIAL_FRMT_UNSPEC;
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unsigned char serial[MBEDTLS_X509_RFC5280_MAX_SERIAL_LEN];
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size_t serial_len;
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mbedtls_asn1_sequence *ext_key_usage;
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mbedtls_entropy_context entropy;
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mbedtls_ctr_drbg_context ctr_drbg;
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const char *pers = "crt example app";
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mbedtls_x509_san_list *cur, *prev;
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mbedtls_asn1_named_data *ext_san_dirname = NULL;
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uint8_t ip[4] = { 0 };
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/*
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* Set to sane values
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*/
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mbedtls_x509write_crt_init(&crt);
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mbedtls_pk_init(&loaded_issuer_key);
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mbedtls_pk_init(&loaded_subject_key);
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mbedtls_ctr_drbg_init(&ctr_drbg);
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mbedtls_entropy_init(&entropy);
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#if defined(MBEDTLS_X509_CSR_PARSE_C)
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mbedtls_x509_csr_init(&csr);
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#endif
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mbedtls_x509_crt_init(&issuer_crt);
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memset(buf, 0, sizeof(buf));
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memset(serial, 0, sizeof(serial));
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#if defined(MBEDTLS_USE_PSA_CRYPTO)
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psa_status_t status = psa_crypto_init();
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if (status != PSA_SUCCESS) {
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mbedtls_fprintf(stderr, "Failed to initialize PSA Crypto implementation: %d\n",
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(int) status);
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goto exit;
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}
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#endif /* MBEDTLS_USE_PSA_CRYPTO */
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if (argc < 2) {
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usage:
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mbedtls_printf(USAGE);
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goto exit;
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}
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opt.issuer_crt = DFL_ISSUER_CRT;
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opt.request_file = DFL_REQUEST_FILE;
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opt.subject_key = DFL_SUBJECT_KEY;
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opt.issuer_key = DFL_ISSUER_KEY;
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opt.subject_pwd = DFL_SUBJECT_PWD;
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opt.issuer_pwd = DFL_ISSUER_PWD;
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opt.output_file = DFL_OUTPUT_FILENAME;
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opt.subject_name = DFL_SUBJECT_NAME;
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opt.issuer_name = DFL_ISSUER_NAME;
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opt.not_before = DFL_NOT_BEFORE;
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opt.not_after = DFL_NOT_AFTER;
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opt.serial = DFL_SERIAL;
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opt.serial_hex = DFL_SERIAL_HEX;
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opt.selfsign = DFL_SELFSIGN;
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opt.is_ca = DFL_IS_CA;
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opt.max_pathlen = DFL_MAX_PATHLEN;
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opt.key_usage = DFL_KEY_USAGE;
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opt.ext_key_usage = DFL_EXT_KEY_USAGE;
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opt.ns_cert_type = DFL_NS_CERT_TYPE;
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opt.version = DFL_VERSION - 1;
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opt.md = DFL_DIGEST;
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opt.subject_identifier = DFL_SUBJ_IDENT;
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opt.authority_identifier = DFL_AUTH_IDENT;
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opt.basic_constraints = DFL_CONSTRAINTS;
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opt.format = DFL_FORMAT;
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opt.san_list = NULL;
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for (i = 1; i < argc; i++) {
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p = argv[i];
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if ((q = strchr(p, '=')) == NULL) {
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goto usage;
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}
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*q++ = '\0';
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if (strcmp(p, "request_file") == 0) {
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opt.request_file = q;
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} else if (strcmp(p, "subject_key") == 0) {
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opt.subject_key = q;
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} else if (strcmp(p, "issuer_key") == 0) {
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opt.issuer_key = q;
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} else if (strcmp(p, "subject_pwd") == 0) {
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opt.subject_pwd = q;
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} else if (strcmp(p, "issuer_pwd") == 0) {
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opt.issuer_pwd = q;
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} else if (strcmp(p, "issuer_crt") == 0) {
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opt.issuer_crt = q;
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} else if (strcmp(p, "output_file") == 0) {
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opt.output_file = q;
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} else if (strcmp(p, "subject_name") == 0) {
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opt.subject_name = q;
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} else if (strcmp(p, "issuer_name") == 0) {
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opt.issuer_name = q;
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} else if (strcmp(p, "not_before") == 0) {
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opt.not_before = q;
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} else if (strcmp(p, "not_after") == 0) {
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opt.not_after = q;
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} else if (strcmp(p, "serial") == 0) {
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if (serial_frmt != SERIAL_FRMT_UNSPEC) {
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mbedtls_printf("Invalid attempt to set the serial more than once\n");
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goto usage;
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}
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serial_frmt = SERIAL_FRMT_DEC;
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opt.serial = q;
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} else if (strcmp(p, "serial_hex") == 0) {
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if (serial_frmt != SERIAL_FRMT_UNSPEC) {
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mbedtls_printf("Invalid attempt to set the serial more than once\n");
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goto usage;
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}
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serial_frmt = SERIAL_FRMT_HEX;
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opt.serial_hex = q;
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} else if (strcmp(p, "authority_identifier") == 0) {
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opt.authority_identifier = atoi(q);
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if (opt.authority_identifier != 0 &&
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opt.authority_identifier != 1) {
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mbedtls_printf("Invalid argument for option %s\n", p);
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goto usage;
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}
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} else if (strcmp(p, "subject_identifier") == 0) {
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opt.subject_identifier = atoi(q);
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if (opt.subject_identifier != 0 &&
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opt.subject_identifier != 1) {
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mbedtls_printf("Invalid argument for option %s\n", p);
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goto usage;
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}
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} else if (strcmp(p, "basic_constraints") == 0) {
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opt.basic_constraints = atoi(q);
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if (opt.basic_constraints != 0 &&
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opt.basic_constraints != 1) {
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mbedtls_printf("Invalid argument for option %s\n", p);
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goto usage;
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}
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} else if (strcmp(p, "md") == 0) {
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const mbedtls_md_info_t *md_info =
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mbedtls_md_info_from_string(q);
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if (md_info == NULL) {
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mbedtls_printf("Invalid argument for option %s\n", p);
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goto usage;
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}
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opt.md = mbedtls_md_get_type(md_info);
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} 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_len = 0;
|
|
cur->node.type = MBEDTLS_X509_SAN_IP_ADDRESS;
|
|
ip_len = mbedtls_x509_crt_parse_cn_inet_pton(subtype_value, ip);
|
|
if (ip_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 */
|