mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
c0d3573632
qemu/tests/test-crypto-secret.c

453 lines
11 KiB
C
Raw Normal View History

crypto: add QCryptoSecret object class for password/key handling Introduce a new QCryptoSecret object class which will be used for providing passwords and keys to other objects which need sensitive credentials. The new object can provide secret values directly as properties, or indirectly via a file. The latter includes support for file descriptor passing syntax on UNIX platforms. Ordinarily passing secret values directly as properties is insecure, since they are visible in process listings, or in log files showing the CLI args / QMP commands. It is possible to use AES-256-CBC to encrypt the secret values though, in which case all that is visible is the ciphertext. For ad hoc developer testing though, it is fine to provide the secrets directly without encryption so this is not explicitly forbidden. The anticipated scenario is that libvirtd will create a random master key per QEMU instance (eg /var/run/libvirt/qemu/$VMNAME.key) and will use that key to encrypt all passwords it provides to QEMU via '-object secret,....'. This avoids the need for libvirt (or other mgmt apps) to worry about file descriptor passing. It also makes life easier for people who are scripting the management of QEMU, for whom FD passing is significantly more complex. Providing data inline (insecure, only for ad hoc dev testing) $QEMU -object secret,id=sec0,data=letmein Providing data indirectly in raw format printf "letmein" > mypasswd.txt $QEMU -object secret,id=sec0,file=mypasswd.txt Providing data indirectly in base64 format $QEMU -object secret,id=sec0,file=mykey.b64,format=base64 Providing data with encryption $QEMU -object secret,id=master0,file=mykey.b64,format=base64 \ -object secret,id=sec0,data=[base64 ciphertext],\ keyid=master0,iv=[base64 IV],format=base64 Note that 'format' here refers to the format of the ciphertext data. The decrypted data must always be in raw byte format. More examples are shown in the updated docs. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2015-10-14 11:58:38 +03:00
/*
* QEMU Crypto secret handling
*
* Copyright (c) 2015 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include <glib.h>
#include "crypto/init.h"
#include "crypto/secret.h"
static void test_secret_direct(void)
{
Object *sec = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"sec0",
&error_abort,
"data", "123456",
NULL);
char *pw = qcrypto_secret_lookup_as_utf8("sec0",
&error_abort);
g_assert_cmpstr(pw, ==, "123456");
object_unparent(sec);
g_free(pw);
}
static void test_secret_indirect_good(void)
{
Object *sec;
char *fname = NULL;
int fd = g_file_open_tmp("secretXXXXXX",
&fname,
NULL);
g_assert(fd >= 0);
g_assert_nonnull(fname);
g_assert(write(fd, "123456", 6) == 6);
sec = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"sec0",
&error_abort,
"file", fname,
NULL);
char *pw = qcrypto_secret_lookup_as_utf8("sec0",
&error_abort);
g_assert_cmpstr(pw, ==, "123456");
object_unparent(sec);
g_free(pw);
close(fd);
g_free(fname);
}
static void test_secret_indirect_badfile(void)
{
Object *sec = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"sec0",
NULL,
"file", "does-not-exist",
NULL);
g_assert(sec == NULL);
}
static void test_secret_indirect_emptyfile(void)
{
Object *sec;
char *fname = NULL;
int fd = g_file_open_tmp("secretXXXXXX",
&fname,
NULL);
g_assert(fd >= 0);
g_assert_nonnull(fname);
sec = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"sec0",
&error_abort,
"file", fname,
NULL);
char *pw = qcrypto_secret_lookup_as_utf8("sec0",
&error_abort);
g_assert_cmpstr(pw, ==, "");
object_unparent(sec);
g_free(pw);
close(fd);
g_free(fname);
}
static void test_secret_noconv_base64_good(void)
{
Object *sec = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"sec0",
&error_abort,
"data", "MTIzNDU2",
"format", "base64",
NULL);
char *pw = qcrypto_secret_lookup_as_base64("sec0",
&error_abort);
g_assert_cmpstr(pw, ==, "MTIzNDU2");
object_unparent(sec);
g_free(pw);
}
static void test_secret_noconv_base64_bad(void)
{
Object *sec = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"sec0",
NULL,
"data", "MTI$NDU2",
"format", "base64",
NULL);
g_assert(sec == NULL);
}
static void test_secret_noconv_utf8(void)
{
Object *sec = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"sec0",
&error_abort,
"data", "123456",
"format", "raw",
NULL);
char *pw = qcrypto_secret_lookup_as_utf8("sec0",
&error_abort);
g_assert_cmpstr(pw, ==, "123456");
object_unparent(sec);
g_free(pw);
}
static void test_secret_conv_base64_utf8valid(void)
{
Object *sec = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"sec0",
&error_abort,
"data", "MTIzNDU2",
"format", "base64",
NULL);
char *pw = qcrypto_secret_lookup_as_utf8("sec0",
&error_abort);
g_assert_cmpstr(pw, ==, "123456");
object_unparent(sec);
g_free(pw);
}
static void test_secret_conv_base64_utf8invalid(void)
{
Object *sec = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"sec0",
&error_abort,
"data", "f0VMRgIBAQAAAA==",
"format", "base64",
NULL);
char *pw = qcrypto_secret_lookup_as_utf8("sec0",
NULL);
g_assert(pw == NULL);
object_unparent(sec);
}
static void test_secret_conv_utf8_base64(void)
{
Object *sec = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"sec0",
&error_abort,
"data", "123456",
NULL);
char *pw = qcrypto_secret_lookup_as_base64("sec0",
&error_abort);
g_assert_cmpstr(pw, ==, "MTIzNDU2");
object_unparent(sec);
g_free(pw);
}
static void test_secret_crypt_raw(void)
{
Object *master = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"master",
&error_abort,
"data", "9miloPQCzGy+TL6aonfzVcptibCmCIhKzrnlfwiWivk=",
"format", "base64",
NULL);
Object *sec = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"sec0",
&error_abort,
"data",
"\xCC\xBF\xF7\x09\x46\x19\x0B\x52\x2A\x3A\xB4\x6B\xCD\x7A\xB0\xB0",
"format", "raw",
"keyid", "master",
"iv", "0I7Gw/TKuA+Old2W2apQ3g==",
NULL);
char *pw = qcrypto_secret_lookup_as_utf8("sec0",
&error_abort);
g_assert_cmpstr(pw, ==, "123456");
object_unparent(sec);
object_unparent(master);
g_free(pw);
}
static void test_secret_crypt_base64(void)
{
Object *master = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"master",
&error_abort,
"data", "9miloPQCzGy+TL6aonfzVcptibCmCIhKzrnlfwiWivk=",
"format", "base64",
NULL);
Object *sec = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"sec0",
&error_abort,
"data", "zL/3CUYZC1IqOrRrzXqwsA==",
"format", "base64",
"keyid", "master",
"iv", "0I7Gw/TKuA+Old2W2apQ3g==",
NULL);
char *pw = qcrypto_secret_lookup_as_utf8("sec0",
&error_abort);
g_assert_cmpstr(pw, ==, "123456");
object_unparent(sec);
object_unparent(master);
g_free(pw);
}
static void test_secret_crypt_short_key(void)
{
Object *master = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"master",
&error_abort,
"data", "9miloPQCzGy+TL6aonfzVc",
"format", "base64",
NULL);
Object *sec = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"sec0",
NULL,
"data", "zL/3CUYZC1IqOrRrzXqwsA==",
"format", "raw",
"keyid", "master",
"iv", "0I7Gw/TKuA+Old2W2apQ3g==",
NULL);
g_assert(sec == NULL);
object_unparent(master);
}
static void test_secret_crypt_short_iv(void)
{
Object *master = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"master",
&error_abort,
"data", "9miloPQCzGy+TL6aonfzVcptibCmCIhKzrnlfwiWivk=",
"format", "base64",
NULL);
Object *sec = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"sec0",
NULL,
"data", "zL/3CUYZC1IqOrRrzXqwsA==",
"format", "raw",
"keyid", "master",
"iv", "0I7Gw/TKuA+Old2W2a",
NULL);
g_assert(sec == NULL);
object_unparent(master);
}
static void test_secret_crypt_missing_iv(void)
{
Object *master = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"master",
&error_abort,
"data", "9miloPQCzGy+TL6aonfzVcptibCmCIhKzrnlfwiWivk=",
"format", "base64",
NULL);
Object *sec = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"sec0",
NULL,
"data", "zL/3CUYZC1IqOrRrzXqwsA==",
"format", "raw",
"keyid", "master",
NULL);
g_assert(sec == NULL);
object_unparent(master);
}
static void test_secret_crypt_bad_iv(void)
{
Object *master = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"master",
&error_abort,
"data", "9miloPQCzGy+TL6aonfzVcptibCmCIhKzrnlfwiWivk=",
"format", "base64",
NULL);
Object *sec = object_new_with_props(
TYPE_QCRYPTO_SECRET,
object_get_objects_root(),
"sec0",
NULL,
"data", "zL/3CUYZC1IqOrRrzXqwsA==",
"format", "raw",
"keyid", "master",
"iv", "0I7Gw/TK$$uA+Old2W2a",
NULL);
g_assert(sec == NULL);
object_unparent(master);
}
int main(int argc, char **argv)
{
module_call_init(MODULE_INIT_QOM);
g_test_init(&argc, &argv, NULL);
g_assert(qcrypto_init(NULL) == 0);
g_test_add_func("/crypto/secret/direct",
test_secret_direct);
g_test_add_func("/crypto/secret/indirect/good",
test_secret_indirect_good);
g_test_add_func("/crypto/secret/indirect/badfile",
test_secret_indirect_badfile);
g_test_add_func("/crypto/secret/indirect/emptyfile",
test_secret_indirect_emptyfile);
g_test_add_func("/crypto/secret/noconv/base64/good",
test_secret_noconv_base64_good);
g_test_add_func("/crypto/secret/noconv/base64/bad",
test_secret_noconv_base64_bad);
g_test_add_func("/crypto/secret/noconv/utf8",
test_secret_noconv_utf8);
g_test_add_func("/crypto/secret/conv/base64/utf8valid",
test_secret_conv_base64_utf8valid);
g_test_add_func("/crypto/secret/conv/base64/utf8invalid",
test_secret_conv_base64_utf8invalid);
g_test_add_func("/crypto/secret/conv/utf8/base64",
test_secret_conv_utf8_base64);
g_test_add_func("/crypto/secret/crypt/raw",
test_secret_crypt_raw);
g_test_add_func("/crypto/secret/crypt/base64",
test_secret_crypt_base64);
g_test_add_func("/crypto/secret/crypt/shortkey",
test_secret_crypt_short_key);
g_test_add_func("/crypto/secret/crypt/shortiv",
test_secret_crypt_short_iv);
g_test_add_func("/crypto/secret/crypt/missingiv",
test_secret_crypt_missing_iv);
g_test_add_func("/crypto/secret/crypt/badiv",
test_secret_crypt_bad_iv);
return g_test_run();
}
Reference in New Issue Copy Permalink