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authorGravatar Nikias Bassen2014-03-21 18:14:15 +0100
committerGravatar Nikias Bassen2014-03-21 18:14:15 +0100
commit03ad1dc56830bd6e921e58ecce2b8b0fd3aea675 (patch)
treee8d806acde618ba817a165b14943dd1ffec47256 /common/userpref.c
parent1a0ce00184f560556d5e823dc8b1258a79ed5aaa (diff)
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userpref: merge pair_record_generate_from_device_public_key() into pair_record_generate_keys_and_certs()
Diffstat (limited to 'common/userpref.c')
-rw-r--r--common/userpref.c387
1 files changed, 138 insertions, 249 deletions
diff --git a/common/userpref.c b/common/userpref.c
index 5a00d28..cb74945 100644
--- a/common/userpref.c
+++ b/common/userpref.c
@@ -43,8 +43,10 @@
#include <openssl/x509v3.h>
#else
#include <gnutls/gnutls.h>
+#include <gnutls/crypto.h>
#include <gnutls/x509.h>
#include <gcrypt.h>
+#include <libtasn1.h>
#endif
#include <dirent.h>
@@ -389,19 +391,27 @@ static int X509_add_ext_helper(X509 *cert, int nid, char *value)
#endif
/**
- * Private function which generate private keys and certificates.
+ * Private function to generate required private keys and certificates.
+ *
+ * @param pair_record a #PLIST_DICT that will be filled with the keys
+ * and certificates
+ * @param public_key the public key to use (device public key)
*
* @return 1 if keys were successfully generated, 0 otherwise
*/
-userpref_error_t pair_record_generate_keys_and_certs(plist_t pair_record)
+userpref_error_t pair_record_generate_keys_and_certs(plist_t pair_record, key_data_t public_key)
{
userpref_error_t ret = USERPREF_E_SSL_ERROR;
+ key_data_t dev_cert_pem = { NULL, 0 };
key_data_t root_key_pem = { NULL, 0 };
key_data_t root_cert_pem = { NULL, 0 };
key_data_t host_key_pem = { NULL, 0 };
key_data_t host_cert_pem = { NULL, 0 };
+ if (!pair_record || !public_key.data)
+ return USERPREF_E_INVALID_ARG;
+
debug_info("Generating keys and certificates...");
#ifdef HAVE_OPENSSL
@@ -531,6 +541,63 @@ userpref_error_t pair_record_generate_keys_and_certs(plist_t pair_record)
}
}
+ RSA *pubkey = NULL;
+ {
+ BIO *membp = BIO_new_mem_buf(public_key.data, public_key.size);
+ if (!PEM_read_bio_RSAPublicKey(membp, &pubkey, NULL, NULL)) {
+ debug_info("Could not read public key");
+ }
+ BIO_free(membp);
+ }
+
+ X509* dev_cert = X509_new();
+ if (pubkey && dev_cert) {
+ /* generate device certificate */
+ ASN1_INTEGER* sn = ASN1_INTEGER_new();
+ ASN1_INTEGER_set(sn, 0);
+ X509_set_serialNumber(dev_cert, sn);
+ ASN1_INTEGER_free(sn);
+ X509_set_version(dev_cert, 2);
+
+ X509_add_ext_helper(dev_cert, NID_basic_constraints, (char*)"critical,CA:FALSE");
+
+ ASN1_TIME* asn1time = ASN1_TIME_new();
+ ASN1_TIME_set(asn1time, time(NULL));
+ X509_set_notBefore(dev_cert, asn1time);
+ ASN1_TIME_set(asn1time, time(NULL) + (60 * 60 * 24 * 365 * 10));
+ X509_set_notAfter(dev_cert, asn1time);
+ ASN1_TIME_free(asn1time);
+
+ EVP_PKEY* pkey = EVP_PKEY_new();
+ EVP_PKEY_assign_RSA(pkey, pubkey);
+ X509_set_pubkey(dev_cert, pkey);
+ EVP_PKEY_free(pkey);
+
+ X509_add_ext_helper(dev_cert, NID_subject_key_identifier, (char*)"hash");
+ X509_add_ext_helper(dev_cert, NID_key_usage, (char*)"critical,digitalSignature,keyEncipherment");
+
+ /* sign device certificate with root private key */
+ if (X509_sign(dev_cert, root_pkey, EVP_sha1())) {
+ /* if signing succeeded, export in PEM format */
+ BIO* membp = BIO_new(BIO_s_mem());
+ if (PEM_write_bio_X509(membp, dev_cert) > 0) {
+ char *bdata = NULL;
+ dev_cert_pem.size = BIO_get_mem_data(membp, &bdata);
+ dev_cert_pem.data = (unsigned char*)malloc(dev_cert_pem.size);
+ if (dev_cert_pem.data) {
+ memcpy(dev_cert_pem.data, bdata, dev_cert_pem.size);
+ }
+ BIO_free(membp);
+ membp = NULL;
+ }
+ } else {
+ debug_info("ERROR: Signing device certificate with root private key failed!");
+ }
+ }
+
+ X509V3_EXT_cleanup();
+ X509_free(dev_cert);
+
EVP_PKEY_free(root_pkey);
EVP_PKEY_free(host_pkey);
@@ -605,175 +672,8 @@ userpref_error_t pair_record_generate_keys_and_certs(plist_t pair_record)
gnutls_x509_crt_export(host_cert, GNUTLS_X509_FMT_PEM, host_cert_pem.data, &host_cert_export_size);
host_cert_pem.size = host_cert_export_size;
- /* restore gnutls env */
- gnutls_global_deinit();
- gnutls_global_init();
-#endif
- if (NULL != root_cert_pem.data && 0 != root_cert_pem.size &&
- NULL != host_cert_pem.data && 0 != host_cert_pem.size)
- ret = USERPREF_E_SUCCESS;
-
- /* now set keys and certificates */
- pair_record_set_item_from_key_data(pair_record, USERPREF_HOST_PRIVATE_KEY_KEY, &host_key_pem);
- pair_record_set_item_from_key_data(pair_record, USERPREF_HOST_CERTIFICATE_KEY, &host_cert_pem);
- pair_record_set_item_from_key_data(pair_record, USERPREF_ROOT_PRIVATE_KEY_KEY, &root_key_pem);
- pair_record_set_item_from_key_data(pair_record, USERPREF_ROOT_CERTIFICATE_KEY, &root_cert_pem);
-
- if (root_key_pem.data)
- free(root_key_pem.data);
- if (root_cert_pem.data)
- free(root_cert_pem.data);
- if (host_key_pem.data)
- free(host_key_pem.data);
- if (host_cert_pem.data)
- free(host_cert_pem.data);
-
- return ret;
-}
-
-/**
- * Generates the device certificate from the public key as well as the host
- * and root certificates.
- *
- * @param pair_record The pair record to use for lookup of key pairs
- * @param public_key The public key of the device to use for generation.
- *
- * @return USERPREF_E_SUCCESS on success, USERPREF_E_INVALID_ARG when a
- * parameter is NULL, USERPREF_E_INVALID_CONF if the internal configuration
- * system failed, USERPREF_E_SSL_ERROR if the certificates could not be
- * generated
- */
-userpref_error_t pair_record_generate_from_device_public_key(plist_t pair_record, key_data_t public_key)
-{
- if (!pair_record || !public_key.data)
- return USERPREF_E_INVALID_ARG;
-
- userpref_error_t uret = USERPREF_E_UNKNOWN_ERROR;
-
-#ifdef HAVE_OPENSSL
- BIO *membio = BIO_new_mem_buf(public_key.data, public_key.size);
- RSA *pubkey = NULL;
- if (!PEM_read_bio_RSAPublicKey(membio, &pubkey, NULL, NULL)) {
- debug_info("Could not read public key");
- }
- BIO_free(membio);
-
- /* now generate certificates */
- key_data_t root_privkey, host_privkey;
- key_data_t root_cert, host_cert;
-
- X509* dev_cert = X509_new();
-
- root_cert.data = NULL;
- root_cert.size = 0;
- host_cert.data = NULL;
- host_cert.size = 0;
-
- root_privkey.data = NULL;
- root_privkey.size = 0;
- host_privkey.data = NULL;
- host_privkey.size = 0;
-
- uret = pair_record_import_crt_with_name(pair_record, USERPREF_ROOT_CERTIFICATE_KEY, &root_cert);
- uret = pair_record_import_crt_with_name(pair_record, USERPREF_HOST_CERTIFICATE_KEY, &host_cert);
- uret = pair_record_import_key_with_name(pair_record, USERPREF_ROOT_PRIVATE_KEY_KEY, &root_privkey);
- uret = pair_record_import_key_with_name(pair_record, USERPREF_HOST_PRIVATE_KEY_KEY, &host_privkey);
-
- if (USERPREF_E_SUCCESS == uret) {
- /* generate device certificate */
- ASN1_INTEGER* sn = ASN1_INTEGER_new();
- ASN1_INTEGER_set(sn, 0);
- X509_set_serialNumber(dev_cert, sn);
- ASN1_INTEGER_free(sn);
- X509_set_version(dev_cert, 2);
-
- X509_add_ext_helper(dev_cert, NID_basic_constraints, (char*)"critical,CA:FALSE");
-
- ASN1_TIME* asn1time = ASN1_TIME_new();
- ASN1_TIME_set(asn1time, time(NULL));
- X509_set_notBefore(dev_cert, asn1time);
- ASN1_TIME_set(asn1time, time(NULL) + (60 * 60 * 24 * 365 * 10));
- X509_set_notAfter(dev_cert, asn1time);
- ASN1_TIME_free(asn1time);
-
- /* read root certificate */
- BIO* membp;
- X509* rootCert = NULL;
- membp = BIO_new_mem_buf(root_cert.data, root_cert.size);
- PEM_read_bio_X509(membp, &rootCert, NULL, NULL);
- BIO_free(membp);
- if (!rootCert) {
- debug_info("Could not read RootCertificate");
- } else {
- debug_info("RootCertificate loaded");
- EVP_PKEY* pkey = EVP_PKEY_new();
- EVP_PKEY_assign_RSA(pkey, pubkey);
- X509_set_pubkey(dev_cert, pkey);
- EVP_PKEY_free(pkey);
- X509_free(rootCert);
- }
-
- X509_add_ext_helper(dev_cert, NID_subject_key_identifier, (char*)"hash");
- X509_add_ext_helper(dev_cert, NID_key_usage, (char*)"critical,digitalSignature,keyEncipherment");
+ ret = USERPREF_E_UNKNOWN_ERROR;
- /* read root private key */
- EVP_PKEY* rootPriv = NULL;
- membp = BIO_new_mem_buf(root_privkey.data, root_privkey.size);
- PEM_read_bio_PrivateKey(membp, &rootPriv, NULL, NULL);
- BIO_free(membp);
- if (!rootPriv) {
- debug_info("Could not read RootPrivateKey");
- } else {
- debug_info("RootPrivateKey loaded");
- if (X509_sign(dev_cert, rootPriv, EVP_sha1())) {
- uret = USERPREF_E_SUCCESS;
- } else {
- debug_info("signing failed");
- }
- EVP_PKEY_free(rootPriv);
- }
-
- if (USERPREF_E_SUCCESS == uret) {
- /* if everything went well, export in PEM format */
- key_data_t pem_root_cert = { NULL, 0 };
- key_data_t pem_host_cert = { NULL, 0 };
-
- uret = pair_record_import_crt_with_name(pair_record, USERPREF_ROOT_CERTIFICATE_KEY, &pem_root_cert);
- uret = pair_record_import_crt_with_name(pair_record, USERPREF_HOST_CERTIFICATE_KEY, &pem_host_cert);
-
- if (USERPREF_E_SUCCESS == uret) {
- /* set new keys and certs in pair record */
- membp = BIO_new(BIO_s_mem());
- if (membp && PEM_write_bio_X509(membp, dev_cert) > 0) {
- void *datap;
- int size = BIO_get_mem_data(membp, &datap);
- plist_dict_set_item(pair_record, USERPREF_DEVICE_CERTIFICATE_KEY, plist_new_data(datap, size));
- }
- if (membp)
- BIO_free(membp);
-
- plist_dict_set_item(pair_record, USERPREF_HOST_CERTIFICATE_KEY, plist_new_data((char*)pem_host_cert.data, pem_host_cert.size));
- plist_dict_set_item(pair_record, USERPREF_ROOT_CERTIFICATE_KEY, plist_new_data((char*)pem_root_cert.data, pem_root_cert.size));
- plist_dict_set_item(pair_record, USERPREF_ROOT_PRIVATE_KEY_KEY, plist_new_data((char*)root_privkey.data, root_privkey.size));
- plist_dict_set_item(pair_record, USERPREF_HOST_PRIVATE_KEY_KEY, plist_new_data((char*)host_privkey.data, host_privkey.size));
-
- free(pem_root_cert.data);
- free(pem_host_cert.data);
- }
- }
- }
- X509V3_EXT_cleanup();
- X509_free(dev_cert);
-
- if (root_cert.data)
- free(root_cert.data);
- if (host_cert.data)
- free(host_cert.data);
- if (root_privkey.data)
- free(root_privkey.data);
- if (host_privkey.data)
- free(host_privkey.data);
-#else
gnutls_datum_t modulus = { NULL, 0 };
gnutls_datum_t exponent = { NULL, 0 };
@@ -800,7 +700,7 @@ userpref_error_t pair_record_generate_from_device_public_key(plist_t pair_record
ret1 = asn1_read_value(asn1_pub_key, "modulus", modulus.data, (int*)&modulus.size);
ret2 = asn1_read_value(asn1_pub_key, "publicExponent", exponent.data, (int*)&exponent.size);
if (ASN1_SUCCESS == ret1 && ASN1_SUCCESS == ret2)
- uret = USERPREF_E_SUCCESS;
+ ret = USERPREF_E_SUCCESS;
}
if (asn1_pub_key)
asn1_delete_structure(&asn1_pub_key);
@@ -810,83 +710,45 @@ userpref_error_t pair_record_generate_from_device_public_key(plist_t pair_record
}
/* now generate certificates */
- if (USERPREF_E_SUCCESS == uret && 0 != modulus.size && 0 != exponent.size) {
-
- gnutls_global_init();
+ if (USERPREF_E_SUCCESS == ret && 0 != modulus.size && 0 != exponent.size) {
gnutls_datum_t essentially_null = { (unsigned char*)strdup("abababababababab"), strlen("abababababababab") };
- gnutls_x509_privkey_t fake_privkey, root_privkey, host_privkey;
- gnutls_x509_crt_t dev_cert, root_cert, host_cert;
+ gnutls_x509_privkey_t fake_privkey;
+ gnutls_x509_crt_t dev_cert;
gnutls_x509_privkey_init(&fake_privkey);
- gnutls_x509_privkey_init(&root_privkey);
- gnutls_x509_privkey_init(&host_privkey);
-
gnutls_x509_crt_init(&dev_cert);
- gnutls_x509_crt_init(&root_cert);
- gnutls_x509_crt_init(&host_cert);
-
- if (GNUTLS_E_SUCCESS ==
- gnutls_x509_privkey_import_rsa_raw(fake_privkey, &modulus, &exponent, &essentially_null, &essentially_null,
- &essentially_null, &essentially_null)) {
-
- uret = pair_record_import_crt_with_name(pair_record, USERPREF_ROOT_CERTIFICATE_KEY, root_cert);
- uret = pair_record_import_crt_with_name(pair_record, USERPREF_HOST_CERTIFICATE_KEY, host_cert);
- uret = pair_record_import_key_with_name(pair_record, USERPREF_ROOT_PRIVATE_KEY_KEY, root_privkey);
- uret = pair_record_import_key_with_name(pair_record, USERPREF_HOST_PRIVATE_KEY_KEY, host_privkey);
-
- if (USERPREF_E_SUCCESS == uret) {
- /* generate device certificate */
- gnutls_x509_crt_set_key(dev_cert, fake_privkey);
- gnutls_x509_crt_set_serial(dev_cert, "\x00", 1);
- gnutls_x509_crt_set_version(dev_cert, 3);
- gnutls_x509_crt_set_ca_status(dev_cert, 0);
- gnutls_x509_crt_set_activation_time(dev_cert, time(NULL));
- gnutls_x509_crt_set_expiration_time(dev_cert, time(NULL) + (60 * 60 * 24 * 365 * 10));
-
- /* use custom hash generation for compatibility with the "Apple ecosystem" */
- const gnutls_digest_algorithm_t dig_sha1 = GNUTLS_DIG_SHA1;
- size_t hash_size = gnutls_hash_get_len(dig_sha1);
- unsigned char hash[hash_size];
- if (gnutls_hash_fast(dig_sha1, der_pub_key.data, der_pub_key.size, (unsigned char*)&hash) < 0) {
- debug_info("ERROR: Failed to generate SHA1 for public key");
- } else {
- gnutls_x509_crt_set_subject_key_id(dev_cert, hash, hash_size);
- }
- gnutls_x509_crt_set_key_usage(dev_cert, GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT);
- gnutls_x509_crt_sign(dev_cert, root_cert, root_privkey);
-
- if (LOCKDOWN_E_SUCCESS == ret) {
- /* if everything went well, export in PEM format */
- size_t export_size = 0;
- gnutls_datum_t dev_pem = { NULL, 0 };
- gnutls_x509_crt_export(dev_cert, GNUTLS_X509_FMT_PEM, NULL, &export_size);
- dev_pem.data = gnutls_malloc(export_size);
- gnutls_x509_crt_export(dev_cert, GNUTLS_X509_FMT_PEM, dev_pem.data, &export_size);
- dev_pem.size = export_size;
-
- gnutls_datum_t pem_root_cert = { NULL, 0 };
- gnutls_datum_t pem_host_cert = { NULL, 0 };
-
- uret = pair_record_import_crt_with_name(pair_record, USERPREF_ROOT_CERTIFICATE_KEY, &pem_root_cert);
- uret = pair_record_import_crt_with_name(pair_record, USERPREF_HOST_CERTIFICATE_KEY, &pem_host_cert);
-
- if (USERPREF_E_SUCCESS == uret) {
- /* set new keys and certs in pair record */
- plist_dict_set_item(pair_record, USERPREF_DEVICE_CERTIFICATE_KEY, plist_new_data(dev_pem.data, dev_pem.size));
- plist_dict_set_item(pair_record, USERPREF_HOST_CERTIFICATE_KEY, plist_new_data(pem_host_cert.data, pem_host_cert.size));
- plist_dict_set_item(pair_record, USERPREF_ROOT_CERTIFICATE_KEY, plist_new_data(pem_root_cert.data, pem_root_cert.size));
- plist_dict_set_item(pair_record, USERPREF_ROOT_PRIVATE_KEY_KEY, plist_new_data(root_privkey.data, root_privkey.size));
- plist_dict_set_item(pair_record, USERPREF_HOST_PRIVATE_KEY_KEY, plist_new_data(host_privkey.data, host_privkey.size));
-
- gnutls_free(pem_root_cert.data);
- gnutls_free(pem_host_cert.data);
-
- if (dev_pem.data)
- gnutls_free(dev_pem.data);
- }
- }
+ if (GNUTLS_E_SUCCESS == gnutls_x509_privkey_import_rsa_raw(fake_privkey, &modulus, &exponent, &essentially_null, &essentially_null, &essentially_null, &essentially_null)) {
+ /* generate device certificate */
+ gnutls_x509_crt_set_key(dev_cert, fake_privkey);
+ gnutls_x509_crt_set_serial(dev_cert, "\x00", 1);
+ gnutls_x509_crt_set_version(dev_cert, 3);
+ gnutls_x509_crt_set_ca_status(dev_cert, 0);
+ gnutls_x509_crt_set_activation_time(dev_cert, time(NULL));
+ gnutls_x509_crt_set_expiration_time(dev_cert, time(NULL) + (60 * 60 * 24 * 365 * 10));
+
+ /* use custom hash generation for compatibility with the "Apple ecosystem" */
+ const gnutls_digest_algorithm_t dig_sha1 = GNUTLS_DIG_SHA1;
+ size_t hash_size = gnutls_hash_get_len(dig_sha1);
+ unsigned char hash[hash_size];
+ if (gnutls_hash_fast(dig_sha1, der_pub_key.data, der_pub_key.size, (unsigned char*)&hash) < 0) {
+ debug_info("ERROR: Failed to generate SHA1 for public key");
+ } else {
+ gnutls_x509_crt_set_subject_key_id(dev_cert, hash, hash_size);
+ }
+
+ gnutls_x509_crt_set_key_usage(dev_cert, GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT);
+ gnutls_x509_crt_sign(dev_cert, root_cert, root_privkey);
+
+ if (USERPREF_E_SUCCESS == ret) {
+ /* if everything went well, export in PEM format */
+ size_t export_size = 0;
+ gnutls_datum_t dev_pem = { NULL, 0 };
+ gnutls_x509_crt_export(dev_cert, GNUTLS_X509_FMT_PEM, NULL, &export_size);
+ dev_pem.data = gnutls_malloc(export_size);
+ gnutls_x509_crt_export(dev_cert, GNUTLS_X509_FMT_PEM, dev_pem.data, &export_size);
+ dev_pem.size = export_size;
}
}
@@ -894,19 +756,46 @@ userpref_error_t pair_record_generate_from_device_public_key(plist_t pair_record
free(essentially_null.data);
gnutls_x509_crt_deinit(dev_cert);
- gnutls_x509_crt_deinit(root_cert);
- gnutls_x509_crt_deinit(host_cert);
gnutls_x509_privkey_deinit(fake_privkey);
- gnutls_x509_privkey_deinit(root_privkey);
- gnutls_x509_privkey_deinit(host_privkey);
}
+ gnutls_x509_crt_deinit(root_cert);
+ gnutls_x509_crt_deinit(host_cert);
+ gnutls_x509_privkey_deinit(root_privkey);
+ gnutls_x509_privkey_deinit(host_privkey);
+
gnutls_free(modulus.data);
gnutls_free(exponent.data);
gnutls_free(der_pub_key.data);
+
+ /* restore gnutls env */
+ gnutls_global_deinit();
+ gnutls_global_init();
#endif
- return uret;
+ if (NULL != root_cert_pem.data && 0 != root_cert_pem.size &&
+ NULL != host_cert_pem.data && 0 != host_cert_pem.size)
+ ret = USERPREF_E_SUCCESS;
+
+ /* now set keys and certificates */
+ pair_record_set_item_from_key_data(pair_record, USERPREF_DEVICE_CERTIFICATE_KEY, &dev_cert_pem);
+ pair_record_set_item_from_key_data(pair_record, USERPREF_HOST_PRIVATE_KEY_KEY, &host_key_pem);
+ pair_record_set_item_from_key_data(pair_record, USERPREF_HOST_CERTIFICATE_KEY, &host_cert_pem);
+ pair_record_set_item_from_key_data(pair_record, USERPREF_ROOT_PRIVATE_KEY_KEY, &root_key_pem);
+ pair_record_set_item_from_key_data(pair_record, USERPREF_ROOT_CERTIFICATE_KEY, &root_cert_pem);
+
+ if (dev_cert_pem.data)
+ free(dev_cert_pem.data);
+ if (root_key_pem.data)
+ free(root_key_pem.data);
+ if (root_cert_pem.data)
+ free(root_cert_pem.data);
+ if (host_key_pem.data)
+ free(host_key_pem.data);
+ if (host_cert_pem.data)
+ free(host_cert_pem.data);
+
+ return ret;
}
/**
@@ -933,7 +822,7 @@ userpref_error_t pair_record_import_key_with_name(plist_t pair_record, const cha
ret = pair_record_get_item_as_key_data(pair_record, name, key);
#else
key_data_t pem = { NULL, 0 };
- ret = pair_record_get_item_as_key_data(pair_record, name, pem);
+ ret = pair_record_get_item_as_key_data(pair_record, name, &pem);
if (ret == USERPREF_E_SUCCESS && GNUTLS_E_SUCCESS == gnutls_x509_privkey_import(key, &pem, GNUTLS_X509_FMT_PEM))
ret = USERPREF_E_SUCCESS;
else
@@ -970,7 +859,7 @@ userpref_error_t pair_record_import_crt_with_name(plist_t pair_record, const cha
ret = pair_record_get_item_as_key_data(pair_record, name, cert);
#else
key_data_t pem = { NULL, 0 };
- ret = pair_record_get_item_as_key_data(pair_record, name, pem);
+ ret = pair_record_get_item_as_key_data(pair_record, name, &pem);
if (ret == USERPREF_E_SUCCESS && GNUTLS_E_SUCCESS == gnutls_x509_crt_import(cert, &pem, GNUTLS_X509_FMT_PEM))
ret = USERPREF_E_SUCCESS;
else