qemu

test-crypto-afsplit.c (5997B)

---

 /*
  * 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 2.1 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();
 }