--- /dev/null
+/*
+ * QEMU Crypto anti-forensic splitter
+ *
+ * Copyright (c) 2015-2016 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 "qemu/osdep.h"
+#include "qapi/error.h"
+#include "crypto/init.h"
+#include "crypto/afsplit.h"
+
+typedef struct QCryptoAFSplitTestData QCryptoAFSplitTestData;
+struct QCryptoAFSplitTestData {
+ const char *path;
+ QCryptoHashAlgorithm hash;
+ uint32_t stripes;
+ size_t blocklen;
+ const uint8_t *key;
+ const uint8_t *splitkey;
+};
+
+static QCryptoAFSplitTestData test_data[] = {
+ {
+ .path = "/crypto/afsplit/sha256/5",
+ .hash = QCRYPTO_HASH_ALG_SHA256,
+ .stripes = 5,
+ .blocklen = 32,
+ .key = (const uint8_t *)
+ "\x00\x01\x02\x03\x04\x05\x06\x07"
+ "\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f"
+ "\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7"
+ "\xa8\xa9\xaa\xab\xac\xad\xae\xaf",
+ .splitkey = (const uint8_t *)
+ "\xfd\xd2\x73\xb1\x7d\x99\x93\x34"
+ "\x70\xde\xfa\x07\xc5\xac\x58\xd2"
+ "\x30\x67\x2f\x1a\x35\x43\x60\x7d"
+ "\x77\x02\xdb\x62\x3c\xcb\x2c\x33"
+ "\x48\x08\xb6\xf1\x7c\xa3\x20\xa0"
+ "\xad\x2d\x4c\xf3\xcd\x18\x6f\x53"
+ "\xf9\xe8\xe7\x59\x27\x3c\xa9\x54"
+ "\x61\x87\xb3\xaf\xf6\xf7\x7e\x64"
+ "\x86\xaa\x89\x7f\x1f\x9f\xdb\x86"
+ "\xf4\xa2\x16\xff\xa3\x4f\x8c\xa1"
+ "\x59\xc4\x23\x34\x28\xc4\x77\x71"
+ "\x83\xd4\xcd\x8e\x89\x1b\xc7\xc5"
+ "\xae\x4d\xa9\xcd\xc9\x72\x85\x70"
+ "\x13\x68\x52\x83\xfc\xb8\x11\x72"
+ "\xba\x3d\xc6\x4a\x28\xfa\xe2\x86"
+ "\x7b\x27\xab\x58\xe1\xa4\xca\xf6"
+ "\x9e\xbc\xfe\x0c\x92\x79\xb3\xec"
+ "\x1c\x5f\x79\x3b\x0d\x1e\xaa\x1a"
+ "\x77\x0f\x70\x19\x4b\xc8\x80\xee"
+ "\x27\x7c\x6e\x4a\x91\x96\x5c\xf4"
+ },
+ {
+ .path = "/crypto/afsplit/sha256/5000",
+ .hash = QCRYPTO_HASH_ALG_SHA256,
+ .stripes = 5000,
+ .blocklen = 16,
+ .key = (const uint8_t *)
+ "\x00\x01\x02\x03\x04\x05\x06\x07"
+ "\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f",
+ },
+ {
+ .path = "/crypto/afsplit/sha1/1000",
+ .hash = QCRYPTO_HASH_ALG_SHA1,
+ .stripes = 1000,
+ .blocklen = 32,
+ .key = (const uint8_t *)
+ "\x00\x01\x02\x03\x04\x05\x06\x07"
+ "\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f"
+ "\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7"
+ "\xa8\xa9\xaa\xab\xac\xad\xae\xaf",
+ },
+ {
+ .path = "/crypto/afsplit/sha256/big",
+ .hash = QCRYPTO_HASH_ALG_SHA256,
+ .stripes = 1000,
+ .blocklen = 64,
+ .key = (const uint8_t *)
+ "\x00\x01\x02\x03\x04\x05\x06\x07"
+ "\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f"
+ "\x00\x01\x02\x03\x04\x05\x06\x07"
+ "\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f"
+ "\x00\x01\x02\x03\x04\x05\x06\x07"
+ "\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f"
+ "\x00\x01\x02\x03\x04\x05\x06\x07"
+ "\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f",
+ },
+};
+
+
+static inline char hex(int i)
+{
+ if (i < 10) {
+ return '0' + i;
+ }
+ return 'a' + (i - 10);
+}
+
+static char *hex_string(const uint8_t *bytes,
+ size_t len)
+{
+ char *hexstr = g_new0(char, len * 2 + 1);
+ size_t i;
+
+ for (i = 0; i < len; i++) {
+ hexstr[i * 2] = hex((bytes[i] >> 4) & 0xf);
+ hexstr[i * 2 + 1] = hex(bytes[i] & 0xf);
+ }
+ hexstr[len * 2] = '\0';
+
+ return hexstr;
+}
+
+static void test_afsplit(const void *opaque)
+{
+ const QCryptoAFSplitTestData *data = opaque;
+ size_t splitlen = data->blocklen * data->stripes;
+ uint8_t *splitkey = g_new0(uint8_t, splitlen);
+ uint8_t *key = g_new0(uint8_t, data->blocklen);
+ gchar *expect, *actual;
+
+ /* First time we round-trip the key */
+ qcrypto_afsplit_encode(data->hash,
+ data->blocklen, data->stripes,
+ data->key, splitkey,
+ &error_abort);
+
+ qcrypto_afsplit_decode(data->hash,
+ data->blocklen, data->stripes,
+ splitkey, key,
+ &error_abort);
+
+ expect = hex_string(data->key, data->blocklen);
+ actual = hex_string(key, data->blocklen);
+
+ g_assert_cmpstr(actual, ==, expect);
+
+ g_free(actual);
+ g_free(expect);
+
+ /* Second time we merely try decoding a previous split */
+ if (data->splitkey) {
+ memset(key, 0, data->blocklen);
+
+ qcrypto_afsplit_decode(data->hash,
+ data->blocklen, data->stripes,
+ data->splitkey, key,
+ &error_abort);
+
+ expect = hex_string(data->key, data->blocklen);
+ actual = hex_string(key, data->blocklen);
+
+ g_assert_cmpstr(actual, ==, expect);
+
+ g_free(actual);
+ g_free(expect);
+ }
+
+ g_free(key);
+ g_free(splitkey);
+}
+
+int main(int argc, char **argv)
+{
+ size_t i;
+
+ g_test_init(&argc, &argv, NULL);
+
+ g_assert(qcrypto_init(NULL) == 0);
+
+ for (i = 0; i < G_N_ELEMENTS(test_data); i++) {
+ if (!qcrypto_hash_supports(test_data[i].hash)) {
+ continue;
+ }
+ g_test_add_data_func(test_data[i].path, &test_data[i], test_afsplit);
+ }
+ return g_test_run();
+}
Code Review / kvmfornfv.git / blobdiff