static int
aes_ctr_init(archive_crypto_ctx *ctx, const uint8_t *key, size_t key_len)
{
BCRYPT_ALG_HANDLE hAlg;
BCRYPT_KEY_HANDLE hKey;
DWORD keyObj_len, aes_key_len;
PBYTE keyObj;
ULONG result;
NTSTATUS status;
BCRYPT_KEY_LENGTHS_STRUCT key_lengths;
ctx->hAlg = NULL;
ctx->hKey = NULL;
ctx->keyObj = NULL;
switch (key_len) {
case 16: aes_key_len = 128; break;
case 24: aes_key_len = 192; break;
case 32: aes_key_len = 256; break;
default: return -1;
}
status = BCryptOpenAlgorithmProvider(&hAlg, BCRYPT_AES_ALGORITHM,
MS_PRIMITIVE_PROVIDER, 0);
if (!BCRYPT_SUCCESS(status))
return -1;
status = BCryptGetProperty(hAlg, BCRYPT_KEY_LENGTHS, (PUCHAR)&key_lengths,
sizeof(key_lengths), &result, 0);
if (!BCRYPT_SUCCESS(status)) {
BCryptCloseAlgorithmProvider(hAlg, 0);
return -1;
}
if (key_lengths.dwMinLength > aes_key_len
|| key_lengths.dwMaxLength < aes_key_len) {
BCryptCloseAlgorithmProvider(hAlg, 0);
return -1;
}
status = BCryptGetProperty(hAlg, BCRYPT_OBJECT_LENGTH, (PUCHAR)&keyObj_len,
sizeof(keyObj_len), &result, 0);
if (!BCRYPT_SUCCESS(status)) {
BCryptCloseAlgorithmProvider(hAlg, 0);
return -1;
}
keyObj = (PBYTE)HeapAlloc(GetProcessHeap(), 0, keyObj_len);
if (keyObj == NULL) {
BCryptCloseAlgorithmProvider(hAlg, 0);
return -1;
}
status = BCryptSetProperty(hAlg, BCRYPT_CHAINING_MODE,
(PUCHAR)BCRYPT_CHAIN_MODE_ECB, sizeof(BCRYPT_CHAIN_MODE_ECB), 0);
if (!BCRYPT_SUCCESS(status)) {
BCryptCloseAlgorithmProvider(hAlg, 0);
HeapFree(GetProcessHeap(), 0, keyObj);
return -1;
}
status = BCryptGenerateSymmetricKey(hAlg, &hKey,
keyObj, keyObj_len,
(PUCHAR)(uintptr_t)key, (ULONG)key_len, 0);
if (!BCRYPT_SUCCESS(status)) {
BCryptCloseAlgorithmProvider(hAlg, 0);
HeapFree(GetProcessHeap(), 0, keyObj);
return -1;
}
ctx->hAlg = hAlg;
ctx->hKey = hKey;
ctx->keyObj = keyObj;
ctx->keyObj_len = keyObj_len;
ctx->encr_pos = AES_BLOCK_SIZE;
return 0;
}
void
_libssh2_wincng_init(void)
{
int ret;
(void)BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgRNG,
BCRYPT_RNG_ALGORITHM, NULL, 0);
(void)BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgHashMD5,
BCRYPT_MD5_ALGORITHM, NULL, 0);
(void)BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgHashSHA1,
BCRYPT_SHA1_ALGORITHM, NULL, 0);
(void)BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgHmacMD5,
BCRYPT_MD5_ALGORITHM, NULL,
BCRYPT_ALG_HANDLE_HMAC_FLAG);
(void)BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgHmacSHA1,
BCRYPT_SHA1_ALGORITHM, NULL,
BCRYPT_ALG_HANDLE_HMAC_FLAG);
(void)BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgRSA,
BCRYPT_RSA_ALGORITHM, NULL, 0);
(void)BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgDSA,
BCRYPT_DSA_ALGORITHM, NULL, 0);
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgAES_CBC,
BCRYPT_AES_ALGORITHM, NULL, 0);
if (BCRYPT_SUCCESS(ret)) {
ret = BCryptSetProperty(_libssh2_wincng.hAlgAES_CBC, BCRYPT_CHAINING_MODE,
(PBYTE)BCRYPT_CHAIN_MODE_CBC,
sizeof(BCRYPT_CHAIN_MODE_CBC), 0);
if (!BCRYPT_SUCCESS(ret)) {
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgAES_CBC, 0);
}
}
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlgRC4_NA,
BCRYPT_RC4_ALGORITHM, NULL, 0);
if (BCRYPT_SUCCESS(ret)) {
ret = BCryptSetProperty(_libssh2_wincng.hAlgRC4_NA, BCRYPT_CHAINING_MODE,
(PBYTE)BCRYPT_CHAIN_MODE_NA,
sizeof(BCRYPT_CHAIN_MODE_NA), 0);
if (!BCRYPT_SUCCESS(ret)) {
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgRC4_NA, 0);
}
}
ret = BCryptOpenAlgorithmProvider(&_libssh2_wincng.hAlg3DES_CBC,
BCRYPT_3DES_ALGORITHM, NULL, 0);
if (BCRYPT_SUCCESS(ret)) {
ret = BCryptSetProperty(_libssh2_wincng.hAlg3DES_CBC, BCRYPT_CHAINING_MODE,
(PBYTE)BCRYPT_CHAIN_MODE_CBC,
sizeof(BCRYPT_CHAIN_MODE_CBC), 0);
if (!BCRYPT_SUCCESS(ret)) {
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlg3DES_CBC, 0);
}
}
}
int xpfurandom_cleanup(void** data, uint32_t size, void** win_alg_handle, xpfurandom_settings* s) {
NTSTATUS st;
char* x = *data;
st = BCryptCloseAlgorithmProvider(*win_alg_handle, 0);
switch (st){
case STATUS_SUCCESS: break;
case STATUS_INVALID_HANDLE: {
fprintf(stderr, "XPFUrandom: BCryptCloseAlgorithmProvider failed: invalid algorithm handle(STATUS_INVALID_HANDLE)\n");
return FAIL;
}break;
}
SecureZeroMemory(*data, size);
if (x[0]) {
fprintf(stderr, "XPFUrandom: SecureZeroMemory failed, memory not zeroed, will not be freed\n");
return FAIL;
}
if (s->file_out) {
st = fclose(s->file_out);
if (st) {
fprintf(stderr, "XPFUrandom: fclose failed: %s\n", strerror(errno));
return FAIL;
}
}
free(*data);
*data = NULL;
return OK;
}
void
mongoc_crypto_cng_cleanup (void)
{
if (_sha1_hash_algo) {
BCryptCloseAlgorithmProvider (&_sha1_hash_algo, 0);
}
if (_sha1_hmac_algo) {
BCryptCloseAlgorithmProvider (&_sha1_hmac_algo, 0);
}
if (_sha256_hash_algo) {
BCryptCloseAlgorithmProvider (&_sha256_hash_algo, 0);
}
if (_sha256_hash_algo) {
BCryptCloseAlgorithmProvider (&_sha256_hash_algo, 0);
}
}
void
_libssh2_wincng_free(void)
{
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgRNG, 0);
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgHashMD5, 0);
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgHashSHA1, 0);
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgHmacMD5, 0);
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgHmacSHA1, 0);
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgRSA, 0);
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgDSA, 0);
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgAES_CBC, 0);
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlgRC4_NA, 0);
(void)BCryptCloseAlgorithmProvider(_libssh2_wincng.hAlg3DES_CBC, 0);
memset(&_libssh2_wincng, 0, sizeof(_libssh2_wincng));
}
static void xmlSecMSCngSignatureFinalize(xmlSecTransformPtr transform) {
xmlSecMSCngSignatureCtxPtr ctx;
xmlSecAssert(xmlSecMSCngSignatureCheckId(transform));
xmlSecAssert(xmlSecTransformCheckSize(transform, xmlSecMSCngSignatureSize));
ctx = xmlSecMSCngSignatureGetCtx(transform);
xmlSecAssert(ctx != NULL);
if(ctx->data != NULL) {
xmlSecKeyDataDestroy(ctx->data);
}
if (ctx->pbHash != NULL) {
xmlFree(ctx->pbHash);
}
if(ctx->hHashAlg != 0) {
BCryptCloseAlgorithmProvider(ctx->hHashAlg, 0);
}
if(ctx->pbHashObject != NULL) {
xmlFree(ctx->pbHashObject);
}
if(ctx->hHash != 0) {
BCryptDestroyHash(ctx->hHash);
}
memset(ctx, 0, sizeof(xmlSecMSCngSignatureCtx));
}
static void
__hmac_sha1_cleanup(archive_hmac_sha1_ctx *ctx)
{
if (ctx->hAlg != NULL) {
BCryptCloseAlgorithmProvider(ctx->hAlg, 0);
HeapFree(GetProcessHeap(), 0, ctx->hash);
ctx->hAlg = NULL;
}
}
BCryptHashImpl::~BCryptHashImpl()
{
Aws::DeleteArray(m_hashObject);
Aws::DeleteArray(m_hashBuffer);
if (m_algorithmHandle)
{
BCryptCloseAlgorithmProvider(m_algorithmHandle, 0);
}
}
MicrosoftCryptoProvider::~MicrosoftCryptoProvider()
{
#if defined(USE_MS_CRYPTOAPI)
if (m_hProvider)
CryptReleaseContext(m_hProvider, 0);
#elif defined(USE_MS_CNGAPI)
if (m_hProvider)
BCryptCloseAlgorithmProvider(m_hProvider, 0);
#endif
}
static int
__hmac_sha1_init(archive_hmac_sha1_ctx *ctx, const uint8_t *key, size_t key_len)
{
#pragma GCC diagnostic ignored "-Wcast-qual"
BCRYPT_ALG_HANDLE hAlg;
BCRYPT_HASH_HANDLE hHash;
DWORD hash_len;
PBYTE hash;
ULONG result;
NTSTATUS status;
ctx->hAlg = NULL;
status = BCryptOpenAlgorithmProvider(&hAlg, BCRYPT_SHA1_ALGORITHM,
MS_PRIMITIVE_PROVIDER, BCRYPT_ALG_HANDLE_HMAC_FLAG);
if (!BCRYPT_SUCCESS(status))
return -1;
status = BCryptGetProperty(hAlg, BCRYPT_HASH_LENGTH, (PUCHAR)&hash_len,
sizeof(hash_len), &result, 0);
if (!BCRYPT_SUCCESS(status)) {
BCryptCloseAlgorithmProvider(hAlg, 0);
return -1;
}
hash = (PBYTE)HeapAlloc(GetProcessHeap(), 0, hash_len);
if (hash == NULL) {
BCryptCloseAlgorithmProvider(hAlg, 0);
return -1;
}
status = BCryptCreateHash(hAlg, &hHash, NULL, 0,
(PUCHAR)key, (ULONG)key_len, BCRYPT_HASH_REUSABLE_FLAG);
if (!BCRYPT_SUCCESS(status)) {
BCryptCloseAlgorithmProvider(hAlg, 0);
HeapFree(GetProcessHeap(), 0, hash);
return -1;
}
ctx->hAlg = hAlg;
ctx->hHash = hHash;
ctx->hash_len = hash_len;
ctx->hash = hash;
return 0;
}
EXTERN_C static NTSTATUS FLTAPI
ScvnpUnload(_In_ FLT_FILTER_UNLOAD_FLAGS Flags) {
PAGED_CODE();
UNREFERENCED_PARAMETER(Flags);
FltUnregisterFilter(g_ScvnpFilterHandle);
BCryptCloseAlgorithmProvider(g_ScvnpSha1AlgorithmHandle, 0);
LogTermination(nullptr);
return STATUS_SUCCESS;
}
static BOOL sha_check(const WCHAR *file_name)
{
const unsigned char *file_map;
HANDLE file, map;
DWORD size, i;
BCRYPT_HASH_HANDLE hash = NULL;
BCRYPT_ALG_HANDLE alg = NULL;
UCHAR sha[32];
char buf[1024];
BOOL ret = FALSE;
file = CreateFileW(file_name, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_READONLY, NULL);
if(file == INVALID_HANDLE_VALUE) {
WARN("Could not open file: %u\n", GetLastError());
return FALSE;
}
size = GetFileSize(file, NULL);
map = CreateFileMappingW(file, NULL, PAGE_READONLY, 0, 0, NULL);
CloseHandle(file);
if(!map)
return FALSE;
file_map = MapViewOfFile(map, FILE_MAP_READ, 0, 0, 0);
CloseHandle(map);
if(!file_map)
return FALSE;
if(BCryptOpenAlgorithmProvider(&alg, BCRYPT_SHA256_ALGORITHM, MS_PRIMITIVE_PROVIDER, 0))
goto end;
if(BCryptCreateHash(alg, &hash, NULL, 0, NULL, 0, 0))
goto end;
if(BCryptHashData(hash, (UCHAR *)file_map, size, 0))
goto end;
if(BCryptFinishHash(hash, sha, sizeof(sha), 0))
goto end;
for(i=0; i < sizeof(sha); i++)
sprintf(buf + i * 2, "%02x", sha[i]);
ret = !strcmp(buf, addon->sha);
if(!ret)
WARN("Got %s, expected %s\n", buf, addon->sha);
end:
UnmapViewOfFile(file_map);
if(hash) BCryptDestroyHash(hash);
if(alg) BCryptCloseAlgorithmProvider(alg, 0);
return ret;
}
int sha256_hash(uint8_t *hash, uint8_t *data, size_t len)
{
int res = 0;
NTSTATUS status;
BCRYPT_ALG_HANDLE sha = NULL;
BCRYPT_HASH_HANDLE ctx = NULL;
status = BCryptOpenAlgorithmProvider(
&sha,
BCRYPT_SHA256_ALGORITHM,
NULL,
BCRYPT_HASH_REUSABLE_FLAG);
status = BCryptCreateHash(
sha,
&ctx,
NULL,
0,
NULL,
0,
0);
status = BCryptHashData(
ctx,
(PBYTE)data,
len,
0);
status = BCryptFinishHash(
ctx,
hash,
32,
0);
cleanup:
if (NULL != ctx) {
BCryptDestroyHash(ctx);
}
if( NULL != sha ) {
BCryptCloseAlgorithmProvider(
sha,
0);
}
return res;
}
static int
aes_ctr_release(archive_crypto_ctx *ctx)
{
if (ctx->hAlg != NULL) {
BCryptCloseAlgorithmProvider(ctx->hAlg, 0);
ctx->hAlg = NULL;
BCryptDestroyKey(ctx->hKey);
ctx->hKey = NULL;
HeapFree(GetProcessHeap(), 0, ctx->keyObj);
ctx->keyObj = NULL;
}
memset(ctx, 0, sizeof(*ctx));
return 0;
}
static void read_entropy(uint8_t *entropy, size_t size)
{
NTSTATUS nts = 0;
BCRYPT_ALG_HANDLE hAlgorithm = 0;
nts = BCryptOpenAlgorithmProvider(&hAlgorithm, BCRYPT_RNG_ALGORITHM, NULL, 0);
if (BCRYPT_SUCCESS(nts)) {
nts = BCryptGenRandom(hAlgorithm, (PUCHAR)entropy, (ULONG)size, 0);
(void)BCryptCloseAlgorithmProvider(hAlgorithm, 0);
}
if (!BCRYPT_SUCCESS(nts)) {
perror("ptls_minicrypto_random_bytes: could not open BCrypt RNG Algorithm");
abort();
}
}
static int
pbkdf2_sha1(const char *pw, size_t pw_len, const uint8_t *salt,
size_t salt_len, unsigned rounds, uint8_t *derived_key,
size_t derived_key_len)
{
NTSTATUS status;
BCRYPT_ALG_HANDLE hAlg;
status = BCryptOpenAlgorithmProvider(&hAlg, BCRYPT_SHA1_ALGORITHM,
MS_PRIMITIVE_PROVIDER, BCRYPT_ALG_HANDLE_HMAC_FLAG);
if (!BCRYPT_SUCCESS(status))
return -1;
status = BCryptDeriveKeyPBKDF2(hAlg,
(PUCHAR)(uintptr_t)pw, (ULONG)pw_len,
(PUCHAR)(uintptr_t)salt, (ULONG)salt_len, rounds,
(PUCHAR)derived_key, (ULONG)derived_key_len, 0);
BCryptCloseAlgorithmProvider(hAlg, 0);
return (BCRYPT_SUCCESS(status)) ? 0: -1;
}
static void test_md5(void)
{
static const char expected[] =
"e2a3e68d23ce348b8f68b3079de3d4c9";
static const char expected_hmac[] =
"7bda029b93fa8d817fcc9e13d6bdf092";
BCRYPT_ALG_HANDLE alg;
BCRYPT_HASH_HANDLE hash;
UCHAR buf[512], buf_hmac[1024], md5[16], md5_hmac[16];
ULONG size, len;
char str[65];
NTSTATUS ret;
alg = NULL;
ret = BCryptOpenAlgorithmProvider(&alg, BCRYPT_MD5_ALGORITHM, MS_PRIMITIVE_PROVIDER, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(alg != NULL, "alg not set\n");
len = size = 0xdeadbeef;
ret = BCryptGetProperty(NULL, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len, sizeof(len), &size, 0);
ok(ret == STATUS_INVALID_HANDLE, "got %08x\n", ret);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, NULL, (UCHAR *)&len, sizeof(len), &size, 0);
ok(ret == STATUS_INVALID_PARAMETER, "got %08x\n", ret);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len, sizeof(len), NULL, 0);
ok(ret == STATUS_INVALID_PARAMETER, "got %08x\n", ret);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, NULL, sizeof(len), &size, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(size == sizeof(len), "got %u\n", size);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len, 0, &size, 0);
ok(ret == STATUS_BUFFER_TOO_SMALL, "got %08x\n", ret);
ok(len == 0xdeadbeef, "got %u\n", len);
ok(size == sizeof(len), "got %u\n", size);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len , sizeof(len), &size, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(len != 0xdeadbeef, "len not set\n");
ok(size == sizeof(len), "got %u\n", size);
test_hash_length(alg, 16);
test_alg_name(alg, "MD5");
hash = NULL;
len = sizeof(buf);
ret = BCryptCreateHash(alg, &hash, buf, len, NULL, 0, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(hash != NULL, "hash not set\n");
ret = BCryptHashData(hash, NULL, 0, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ret = BCryptHashData(hash, (UCHAR *)"test", sizeof("test"), 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
test_hash_length(hash, 16);
test_alg_name(hash, "MD5");
memset(md5, 0, sizeof(md5));
ret = BCryptFinishHash(hash, md5, sizeof(md5), 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
format_hash( md5, sizeof(md5), str );
ok(!strcmp(str, expected), "got %s\n", str);
ret = BCryptDestroyHash(hash);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ret = BCryptCloseAlgorithmProvider(alg, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
alg = NULL;
ret = BCryptOpenAlgorithmProvider(&alg, BCRYPT_MD5_ALGORITHM, MS_PRIMITIVE_PROVIDER, BCRYPT_ALG_HANDLE_HMAC_FLAG);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(alg != NULL, "alg not set\n");
hash = NULL;
len = sizeof(buf_hmac);
ret = BCryptCreateHash(alg, &hash, buf_hmac, len, (UCHAR *)"key", sizeof("key"), 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(hash != NULL, "hash not set\n");
ret = BCryptHashData(hash, (UCHAR *)"test", sizeof("test"), 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
test_hash_length(hash, 16);
test_alg_name(hash, "MD5");
memset(md5_hmac, 0, sizeof(md5_hmac));
ret = BCryptFinishHash(hash, md5_hmac, sizeof(md5_hmac), 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
format_hash( md5_hmac, sizeof(md5_hmac), str );
ok(!strcmp(str, expected_hmac), "got %s\n", str);
ret = BCryptDestroyHash(hash);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ret = BCryptCloseAlgorithmProvider(alg, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
}
UINT SfDecryptPayload(
LPWSTR lpParameter
)
{
BOOL cond = FALSE, bSuccess = FALSE;
PBYTE cng_object, hashdata, decrypted, enc_data, extracted;
ULONG obj_sz, rlen, hdatasz, enc_data_size;
BCRYPT_ALG_HANDLE h_alg = NULL;
BCRYPT_HASH_HANDLE h_hash = NULL;
BCRYPT_KEY_HANDLE h_rc4key = NULL;
NTSTATUS status;
HANDLE pheap = NULL;
PIMAGE_FILE_HEADER fheader;
PVOID pdll = NULL;
WCHAR InputFile[MAX_PATH + 1], OutputFile[MAX_PATH + 1];
rlen = 0;
RtlSecureZeroMemory(InputFile, sizeof(InputFile));
GetCommandLineParam(lpParameter, 1, InputFile, MAX_PATH, &rlen);
if (rlen == 0) {
SfcuiPrintText(g_ConOut,
T_SFDECRYPTUSAGE,
g_ConsoleOutput, FALSE);
return (UINT)-1;
}
do {
rlen = 0;
GetCommandLineParam(lpParameter, 2, OutputFile, MAX_PATH, &rlen);
if (rlen == 0)
_strcpy(OutputFile, TEXT("out.bin"));
pdll = SfuCreateFileMappingNoExec(InputFile);
if (pdll == NULL)
break;
enc_data_size = 0;
enc_data = SfuQueryResourceData(2, pdll, &enc_data_size);
if (enc_data == NULL)
break;
fheader = &(RtlImageNtHeader(pdll)->FileHeader);
status = BCryptOpenAlgorithmProvider(&h_alg, BCRYPT_MD5_ALGORITHM, NULL, 0);
if (!NT_SUCCESS(status))
break;
obj_sz = 0;
rlen = 0;
status = BCryptGetProperty(h_alg, BCRYPT_OBJECT_LENGTH, (PUCHAR)&obj_sz, sizeof(obj_sz), &rlen, 0);
if (!NT_SUCCESS(status))
break;
hdatasz = 0;
rlen = 0;
status = BCryptGetProperty(h_alg, BCRYPT_HASH_LENGTH, (PUCHAR)&hdatasz, sizeof(hdatasz), &rlen, 0);
if (!NT_SUCCESS(status))
break;
pheap = HeapCreate(0, 0, 0);
if (pheap == NULL)
break;
cng_object = HeapAlloc(pheap, HEAP_ZERO_MEMORY, obj_sz);
if (cng_object == NULL)
break;
hashdata = HeapAlloc(pheap, HEAP_ZERO_MEMORY, hdatasz);
if (hashdata == NULL)
break;
status = BCryptCreateHash(h_alg, &h_hash, cng_object, obj_sz, NULL, 0, 0);
if (!NT_SUCCESS(status))
break;
status = BCryptHashData(h_hash, (PUCHAR)fheader, sizeof(IMAGE_FILE_HEADER), 0);
if (!NT_SUCCESS(status))
break;
status = BCryptFinishHash(h_hash, hashdata, hdatasz, 0);
if (!NT_SUCCESS(status))
break;
BCryptDestroyHash(h_hash);
BCryptCloseAlgorithmProvider(h_alg, 0);
HeapFree(pheap, 0, cng_object);
h_alg = NULL;
h_hash = NULL;
status = BCryptOpenAlgorithmProvider(&h_alg, BCRYPT_RC4_ALGORITHM, NULL, 0);
if (!NT_SUCCESS(status))
break;
obj_sz = 0;
rlen = 0;
status = BCryptGetProperty(h_alg, BCRYPT_OBJECT_LENGTH, (PUCHAR)&obj_sz, sizeof(obj_sz), &rlen, 0);
if (!NT_SUCCESS(status))
break;
cng_object = HeapAlloc(pheap, HEAP_ZERO_MEMORY, obj_sz);
if (cng_object == NULL)
break;
status = BCryptGenerateSymmetricKey(h_alg, &h_rc4key, cng_object, obj_sz, hashdata, hdatasz, 0);
if (!NT_SUCCESS(status))
break;
decrypted = HeapAlloc(pheap, HEAP_ZERO_MEMORY, enc_data_size);
if (decrypted == NULL)
break;
rlen = 0;
status = BCryptEncrypt(h_rc4key, enc_data, enc_data_size, NULL, NULL, 0, decrypted, enc_data_size, &rlen, 0);
if (!NT_SUCCESS(status))
break;
bSuccess = FALSE;
enc_data_size = rlen;
rlen = 0;
extracted = SfcabExtractMemory(decrypted, enc_data_size, &rlen);
if (extracted) {
if (SfuWriteBufferToFile(OutputFile, extracted, rlen, FALSE, FALSE) == rlen) {
bSuccess = TRUE;
}
LocalFree(extracted);
}
else {
//failed to extract, drop cab as is
if (SfuWriteBufferToFile(OutputFile, decrypted, enc_data_size, FALSE, FALSE) == enc_data_size) {
bSuccess = TRUE;
}
}
if (bSuccess) {
SfcuiPrintText(g_ConOut,
T_SFDECRYPTED,
g_ConsoleOutput, FALSE);
SfcuiPrintText(g_ConOut,
OutputFile,
g_ConsoleOutput, FALSE);
}
} while (cond);
if (bSuccess == FALSE) {
SfcuiPrintText(g_ConOut,
T_SFDECRYPTFAIL,
g_ConsoleOutput, FALSE);
}
if (h_rc4key != NULL)
BCryptDestroyKey(h_rc4key);
if (h_hash != NULL)
BCryptDestroyHash(h_hash);
if (h_alg != NULL)
BCryptCloseAlgorithmProvider(h_alg, 0);
if (pheap != NULL)
HeapDestroy(pheap);
if (pdll != 0)
NtUnmapViewOfSection(NtCurrentProcess(), (PVOID)pdll);
return 0;
}
//
// Generate MD5 hash from the given string
//
std::wstring FlickrUploader::CalculateMD5Hash(const std::wstring& buffer)
{
#define NT_SUCCESS(Status) (((NTSTATUS)(Status)) >= 0)
#define STATUS_UNSUCCESSFUL ((NTSTATUS)0xC0000001L)
// Convert wstring to string
std::string byteString(buffer.begin(), buffer.end());
// Open an algorithm handle
BCRYPT_ALG_HANDLE algorithm = nullptr;
NTSTATUS status = BCryptOpenAlgorithmProvider(&algorithm, BCRYPT_MD5_ALGORITHM, nullptr, 0);
// Calculate the size of the buffer to hold the hash object
unsigned long dataSize = 0;
unsigned long hashObjectSize = 0;
if (NT_SUCCESS(status))
{
status = BCryptGetProperty(algorithm, BCRYPT_OBJECT_LENGTH, (unsigned char*)&hashObjectSize, sizeof(unsigned long), &dataSize, 0);
}
// Allocate the hash object on the heap
unsigned char* hashObject = nullptr;
if (NT_SUCCESS(status))
{
hashObject = (unsigned char*) HeapAlloc(GetProcessHeap (), 0, hashObjectSize);
if (nullptr == hashObject)
{
status = STATUS_UNSUCCESSFUL;
}
}
// Calculate the length of the hash
unsigned long hashSize = 0;
if (NT_SUCCESS(status))
{
status = BCryptGetProperty(algorithm, BCRYPT_HASH_LENGTH, (unsigned char*)&hashSize, sizeof(unsigned long), &dataSize, 0);
}
// Allocate the hash buffer on the heap
unsigned char* hash = nullptr;
if (NT_SUCCESS(status))
{
hash = (unsigned char*)HeapAlloc (GetProcessHeap(), 0, hashSize);
if (nullptr == hash)
{
status = STATUS_UNSUCCESSFUL;
}
}
// Create a hash
BCRYPT_HASH_HANDLE cryptHash = nullptr;
if (NT_SUCCESS(status))
{
status = BCryptCreateHash(algorithm, &cryptHash, hashObject, hashObjectSize, nullptr, 0, 0);
}
// Hash data
if (NT_SUCCESS(status))
{
status = BCryptHashData(cryptHash, (unsigned char*)byteString.c_str(), static_cast<unsigned long>(byteString.length()), 0);
}
// Close the hash and get hash data
if (NT_SUCCESS(status))
{
status = BCryptFinishHash(cryptHash, hash, hashSize, 0);
}
std::wstring resultString;
// If no issues, then copy the bytes to the output string
if (NT_SUCCESS(status))
{
std::wostringstream hexString;
for (unsigned short i = 0; i < hashSize; i++)
{
hexString << std::setfill(L'0') << std::setw(2) << std::hex << hash[i];
}
resultString = hexString.str();
}
// Cleanup
if(algorithm)
{
BCryptCloseAlgorithmProvider(algorithm, 0);
}
if (cryptHash)
{
BCryptDestroyHash(cryptHash);
}
if(hashObject)
{
HeapFree(GetProcessHeap(), 0, hashObject);
}
if(hash)
{
HeapFree(GetProcessHeap(), 0, hash);
}
return resultString;
}
int main(int argc, char **argv)
{
// Handles for RSA
BCRYPT_ALG_HANDLE hAlgo = NULL;
BCRYPT_KEY_HANDLE hKey = NULL;
FILE_CRYPTO_INFO cryptoInfo;
PBYTE psPlainText = NULL;
DWORD dwBytesWritten = 0;
DWORD dwBytesRead = 0;
CCRYPT_STATUS status;
// TEST DATA //
PBYTE pbData1 = "Hello world!\n";
PBYTE pbData2 = "Hello person!\n";
PBYTE pbData3 = "This is cool!\n";
if (argc != 2) {
printf("USAGE: %s <encrypt|decrypt>\n\n", argv[0]);
return -1;
}
// --------------------------------------------------------------------------
//
// Testing encrypting/writing to file
//
// --------------------------------------------------------------------------
if (strcmp(argv[1], "encrypt") == 0)
{
if (CCRYPT_STATUS_SUCCESS != (status = CCryptCreateFile(&cryptoInfo, TEXT("test.log"), CCRYPT_FILE_WRITE))) {
printf("CCryptCreateFile error: %x\n", status);
return -1;
}
// Write data to file
if (!CCryptWriteFile(&cryptoInfo, pbData1, strlen(pbData1), &dwBytesWritten)) {
printf("CCryptWriteFile error: %x\n", GetLastError());
return -1;
}
if (!CCryptWriteFile(&cryptoInfo, pbData2, strlen(pbData2), &dwBytesWritten)) {
printf("CCryptWriteFile error: %x\n", GetLastError());
return -1;
}
if (!CCryptWriteFile(&cryptoInfo, pbData3, strlen(pbData3), &dwBytesWritten)) {
printf("CCryptWriteFile error: %x\n", GetLastError());
return -1;
}
// Import our RSA public key to encrypt AES key
if (CCRYPT_STATUS_SUCCESS != (status = RSAImportKey(&hAlgo, &hKey, TEXT("public.key"), BCRYPT_RSAPUBLIC_BLOB))) {
printf("RSAImportKey error (public): %x\n", status);
return -1;
}
// Finalize the file write
if (!CCryptFinalizeFile(&cryptoInfo, hKey)) {
printf("CCryptFinalizeFile error: %d\n", GetLastError());
return -1;
}
CCryptCloseHandle(&cryptoInfo);
BCryptDestroyKey(hKey);
BCryptCloseAlgorithmProvider(hAlgo, 0);
}
// --------------------------------------------------------------------------
//
// Testing reading/decrypting from file
//
// --------------------------------------------------------------------------
else
{
if (CCRYPT_STATUS_SUCCESS != (status = CCryptCreateFile(&cryptoInfo, TEXT("test.log"), CCRYPT_FILE_READ))) {
printf("CCryptCreateFile error: %x\n", status);
return -1;
}
// Import our RSA private key to decrypt AES key
if (CCRYPT_STATUS_SUCCESS != (status = RSAImportKey(&hAlgo, &hKey, TEXT("private.key"), BCRYPT_RSAPRIVATE_BLOB))) {
printf("RSAImportKey error (private): %x\n", status);
return -1;
}
if (!CCryptReadFile(&cryptoInfo, hKey, &psPlainText, &dwBytesRead))
{
printf("CCryptReadFile error: %x\n", GetLastError());
return -1;
}
printf("Plain text: %s\n\n", psPlainText);
if (psPlainText != NULL) {
HeapFree(GetProcessHeap(), 0, psPlainText);
}
CCryptCloseHandle(&cryptoInfo);
BCryptDestroyKey(hKey);
BCryptCloseAlgorithmProvider(hAlgo, 0);
}
return 0;
}
static void test_sha512(void)
{
static const char expected[] =
"d55ced17163bf5386f2cd9ff21d6fd7fe576a915065c24744d09cfae4ec84ee1e"
"f6ef11bfbc5acce3639bab725b50a1fe2c204f8c820d6d7db0df0ecbc49c5ca";
BCRYPT_ALG_HANDLE alg;
BCRYPT_HASH_HANDLE hash;
UCHAR buf[512], sha512[64];
ULONG size, len;
char str[129];
NTSTATUS ret;
alg = NULL;
ret = BCryptOpenAlgorithmProvider(&alg, BCRYPT_SHA512_ALGORITHM, MS_PRIMITIVE_PROVIDER, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(alg != NULL, "alg not set\n");
len = size = 0xdeadbeef;
ret = BCryptGetProperty(NULL, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len, sizeof(len), &size, 0);
ok(ret == STATUS_INVALID_HANDLE, "got %08x\n", ret);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, NULL, (UCHAR *)&len, sizeof(len), &size, 0);
ok(ret == STATUS_INVALID_PARAMETER, "got %08x\n", ret);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len, sizeof(len), NULL, 0);
ok(ret == STATUS_INVALID_PARAMETER, "got %08x\n", ret);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, NULL, sizeof(len), &size, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(size == sizeof(len), "got %u\n", size);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len, 0, &size, 0);
ok(ret == STATUS_BUFFER_TOO_SMALL, "got %08x\n", ret);
ok(len == 0xdeadbeef, "got %u\n", len);
ok(size == sizeof(len), "got %u\n", size);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len , sizeof(len), &size, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(len != 0xdeadbeef, "len not set\n");
ok(size == sizeof(len), "got %u\n", size);
test_hash_length(alg, 64);
test_alg_name(alg, "SHA512");
hash = NULL;
len = sizeof(buf);
ret = BCryptCreateHash(alg, &hash, buf, len, NULL, 0, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(hash != NULL, "hash not set\n");
ret = BCryptHashData(hash, (UCHAR *)"test", sizeof("test"), 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
test_hash_length(hash, 64);
test_alg_name(hash, "SHA512");
memset(sha512, 0, sizeof(sha512));
ret = BCryptFinishHash(hash, sha512, sizeof(sha512), 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
format_hash( sha512, sizeof(sha512), str );
ok(!strcmp(str, expected), "got %s\n", str);
ret = BCryptDestroyHash(hash);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ret = BCryptCloseAlgorithmProvider(alg, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
}
static void test_sha384(void)
{
static const char expected[] =
"62b21e90c9022b101671ba1f808f8631a8149f0f12904055839a35c1ca78ae5363eed1e743a692d70e0504b0cfd12ef9";
BCRYPT_ALG_HANDLE alg;
BCRYPT_HASH_HANDLE hash;
UCHAR buf[512], sha384[48];
ULONG size, len;
char str[97];
NTSTATUS ret;
alg = NULL;
ret = BCryptOpenAlgorithmProvider(&alg, BCRYPT_SHA384_ALGORITHM, MS_PRIMITIVE_PROVIDER, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(alg != NULL, "alg not set\n");
len = size = 0xdeadbeef;
ret = BCryptGetProperty(NULL, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len, sizeof(len), &size, 0);
ok(ret == STATUS_INVALID_HANDLE, "got %08x\n", ret);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, NULL, (UCHAR *)&len, sizeof(len), &size, 0);
ok(ret == STATUS_INVALID_PARAMETER, "got %08x\n", ret);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len, sizeof(len), NULL, 0);
ok(ret == STATUS_INVALID_PARAMETER, "got %08x\n", ret);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, NULL, sizeof(len), &size, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(size == sizeof(len), "got %u\n", size);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len, 0, &size, 0);
ok(ret == STATUS_BUFFER_TOO_SMALL, "got %08x\n", ret);
ok(len == 0xdeadbeef, "got %u\n", len);
ok(size == sizeof(len), "got %u\n", size);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len , sizeof(len), &size, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(len != 0xdeadbeef, "len not set\n");
ok(size == sizeof(len), "got %u\n", size);
test_hash_length(alg, 48);
test_alg_name(alg, "SHA384");
hash = NULL;
len = sizeof(buf);
ret = BCryptCreateHash(alg, &hash, buf, len, NULL, 0, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(hash != NULL, "hash not set\n");
ret = BCryptHashData(hash, (UCHAR *)"test", sizeof("test"), 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
test_hash_length(hash, 48);
test_alg_name(hash, "SHA384");
memset(sha384, 0, sizeof(sha384));
ret = BCryptFinishHash(hash, sha384, sizeof(sha384), 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
format_hash( sha384, sizeof(sha384), str );
ok(!strcmp(str, expected), "got %s\n", str);
ret = BCryptDestroyHash(hash);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ret = BCryptCloseAlgorithmProvider(alg, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
}
static void test_sha256(void)
{
static const char expected[] =
"ceb73749c899693706ede1e30c9929b3fd5dd926163831c2fb8bd41e6efb1126";
BCRYPT_ALG_HANDLE alg;
BCRYPT_HASH_HANDLE hash;
UCHAR buf[512], sha256[32];
ULONG size, len;
char str[65];
NTSTATUS ret;
alg = NULL;
ret = BCryptOpenAlgorithmProvider(&alg, BCRYPT_SHA256_ALGORITHM, MS_PRIMITIVE_PROVIDER, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(alg != NULL, "alg not set\n");
len = size = 0xdeadbeef;
ret = BCryptGetProperty(NULL, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len, sizeof(len), &size, 0);
ok(ret == STATUS_INVALID_HANDLE, "got %08x\n", ret);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, NULL, (UCHAR *)&len, sizeof(len), &size, 0);
ok(ret == STATUS_INVALID_PARAMETER, "got %08x\n", ret);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len, sizeof(len), NULL, 0);
ok(ret == STATUS_INVALID_PARAMETER, "got %08x\n", ret);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, NULL, sizeof(len), &size, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(size == sizeof(len), "got %u\n", size);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len, 0, &size, 0);
ok(ret == STATUS_BUFFER_TOO_SMALL, "got %08x\n", ret);
ok(len == 0xdeadbeef, "got %u\n", len);
ok(size == sizeof(len), "got %u\n", size);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len , sizeof(len), &size, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(len != 0xdeadbeef, "len not set\n");
ok(size == sizeof(len), "got %u\n", size);
test_hash_length(alg, 32);
test_alg_name(alg, "SHA256");
hash = NULL;
len = sizeof(buf);
ret = BCryptCreateHash(alg, &hash, buf, len, NULL, 0, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(hash != NULL, "hash not set\n");
ret = BCryptHashData(hash, (UCHAR *)"test", sizeof("test"), 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
test_hash_length(hash, 32);
test_alg_name(hash, "SHA256");
memset(sha256, 0, sizeof(sha256));
ret = BCryptFinishHash(hash, sha256, sizeof(sha256), 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
format_hash( sha256, sizeof(sha256), str );
ok(!strcmp(str, expected), "got %s\n", str);
ret = BCryptDestroyHash(hash);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ret = BCryptCloseAlgorithmProvider(alg, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
}
static void test_sha512(void)
{
static const char expected[] =
"d55ced17163bf5386f2cd9ff21d6fd7fe576a915065c24744d09cfae4ec84ee1e"
"f6ef11bfbc5acce3639bab725b50a1fe2c204f8c820d6d7db0df0ecbc49c5ca";
static const char expected_hmac[] =
"415fb6b10018ca03b38a1b1399c42ac0be5e8aceddb9a73103f5e543bf2d888f2"
"eecf91373941f9315dd730a77937fa92444450fbece86f409d9cb5ec48c6513";
BCRYPT_ALG_HANDLE alg;
BCRYPT_HASH_HANDLE hash;
UCHAR buf[512], buf_hmac[1024], sha512[64], sha512_hmac[64];
ULONG size, len;
char str[129];
NTSTATUS ret;
alg = NULL;
ret = BCryptOpenAlgorithmProvider(&alg, BCRYPT_SHA512_ALGORITHM, MS_PRIMITIVE_PROVIDER, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(alg != NULL, "alg not set\n");
len = size = 0xdeadbeef;
ret = BCryptGetProperty(NULL, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len, sizeof(len), &size, 0);
ok(ret == STATUS_INVALID_HANDLE, "got %08x\n", ret);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, NULL, (UCHAR *)&len, sizeof(len), &size, 0);
ok(ret == STATUS_INVALID_PARAMETER, "got %08x\n", ret);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len, sizeof(len), NULL, 0);
ok(ret == STATUS_INVALID_PARAMETER, "got %08x\n", ret);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, NULL, sizeof(len), &size, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(size == sizeof(len), "got %u\n", size);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len, 0, &size, 0);
ok(ret == STATUS_BUFFER_TOO_SMALL, "got %08x\n", ret);
ok(len == 0xdeadbeef, "got %u\n", len);
ok(size == sizeof(len), "got %u\n", size);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len , sizeof(len), &size, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(len != 0xdeadbeef, "len not set\n");
ok(size == sizeof(len), "got %u\n", size);
test_hash_length(alg, 64);
test_alg_name(alg, "SHA512");
hash = NULL;
len = sizeof(buf);
ret = BCryptCreateHash(alg, &hash, buf, len, NULL, 0, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(hash != NULL, "hash not set\n");
ret = BCryptHashData(hash, NULL, 0, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ret = BCryptHashData(hash, (UCHAR *)"test", sizeof("test"), 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
test_hash_length(hash, 64);
test_alg_name(hash, "SHA512");
memset(sha512, 0, sizeof(sha512));
ret = BCryptFinishHash(hash, sha512, sizeof(sha512), 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
format_hash( sha512, sizeof(sha512), str );
ok(!strcmp(str, expected), "got %s\n", str);
ret = BCryptDestroyHash(hash);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ret = BCryptCloseAlgorithmProvider(alg, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
alg = NULL;
ret = BCryptOpenAlgorithmProvider(&alg, BCRYPT_SHA512_ALGORITHM, MS_PRIMITIVE_PROVIDER, BCRYPT_ALG_HANDLE_HMAC_FLAG);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(alg != NULL, "alg not set\n");
hash = NULL;
len = sizeof(buf_hmac);
ret = BCryptCreateHash(alg, &hash, buf_hmac, len, (UCHAR *)"key", sizeof("key"), 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(hash != NULL, "hash not set\n");
ret = BCryptHashData(hash, (UCHAR *)"test", sizeof("test"), 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
test_hash_length(hash, 64);
test_alg_name(hash, "SHA512");
memset(sha512_hmac, 0, sizeof(sha512_hmac));
ret = BCryptFinishHash(hash, sha512_hmac, sizeof(sha512_hmac), 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
format_hash( sha512_hmac, sizeof(sha512_hmac), str );
ok(!strcmp(str, expected_hmac), "got %s\n", str);
ret = BCryptDestroyHash(hash);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ret = BCryptCloseAlgorithmProvider(alg, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
}
EXTERN_C NTSTATUS DriverEntry(_In_ PDRIVER_OBJECT DriverObject,
_In_ PUNICODE_STRING RegistryPath) {
const FLT_OPERATION_REGISTRATION fltCallbacks[] = {
{
IRP_MJ_CLEANUP, FLTFL_OPERATION_REGISTRATION_SKIP_PAGING_IO, nullptr,
ScvnpPostCleanupAndFlushBuffers,
},
{
IRP_MJ_FLUSH_BUFFERS, FLTFL_OPERATION_REGISTRATION_SKIP_PAGING_IO,
nullptr, ScvnpPostCleanupAndFlushBuffers,
},
{IRP_MJ_SET_INFORMATION, FLTFL_OPERATION_REGISTRATION_SKIP_PAGING_IO,
ScvnpPreSetInformation, nullptr},
{IRP_MJ_OPERATION_END}};
const FLT_REGISTRATION filterRegistration = {
sizeof(filterRegistration), // Size
FLT_REGISTRATION_VERSION, // Version
0, // Flags
nullptr, // Context
fltCallbacks, // Operation callbacks
ScvnpUnload, // FilterUnload
nullptr, // InstanceSetup
nullptr, // InstanceQueryTeardown
nullptr, // InstanceTeardownStart
nullptr, // InstanceTeardownComplete
nullptr, // GenerateFileName
nullptr, // GenerateDestinationFileName
nullptr, // NormalizeNameComponent
};
PAGED_CODE();
UNREFERENCED_PARAMETER(RegistryPath);
// DBG_BREAK();
auto status = ScvnpCreateDirectory(SCVNP_OUT_DIRECTORY_PATH);
if (!NT_SUCCESS(status)) {
return status;
}
// Initialize the Log system
status = LogInitialization(
SCVNP_LOG_LEVEL | LOG_OPT_DISABLE_TIME | LOG_OPT_DISABLE_FUNCTION_NAME,
SCVNP_LOG_FILE_PATH, nullptr);
if (!NT_SUCCESS(status)) {
return status;
}
// Initialize the crypt APIs.
status = BCryptOpenAlgorithmProvider(&g_ScvnpSha1AlgorithmHandle,
BCRYPT_SHA1_ALGORITHM, nullptr, 0);
if (!NT_SUCCESS(status)) {
LOG_ERROR("BCryptOpenAlgorithmProvider failed (%08x)", status);
LogTermination(nullptr);
return status;
}
// Register and start a mini filter driver
status = FltRegisterFilter(DriverObject, &filterRegistration,
&g_ScvnpFilterHandle);
if (!NT_SUCCESS(status)) {
LOG_ERROR("FltRegisterFilter failed (%08x)", status);
BCryptCloseAlgorithmProvider(g_ScvnpSha1AlgorithmHandle, 0);
LogTermination(nullptr);
return status;
}
status = FltStartFiltering(g_ScvnpFilterHandle);
if (!NT_SUCCESS(status)) {
LOG_ERROR("FltStartFiltering failed (%08x)", status);
FltUnregisterFilter(g_ScvnpFilterHandle);
BCryptCloseAlgorithmProvider(g_ScvnpSha1AlgorithmHandle, 0);
LogTermination(nullptr);
return status;
}
LOG_INFO("Scavenger installed");
return status;
}
bool aes_decrypt_check(m0_kdbx_header_entry_t *hdr, uint8_t *masterkey, m0_kdbx_payload_t *payload)
{
bool res = false;
BCRYPT_ALG_HANDLE aes = NULL;
BCRYPT_KEY_HANDLE ctx = NULL;
NTSTATUS status = 0;
DWORD len_ciphertext = 0,
tmp_len = 0,
key_objectlen = 0;
PBYTE key_object = NULL;
uint8_t plaintext[32] = {0};
uint8_t iv[256] = {0};
uint8_t ivlen = hdr[ENCRYPTIONIV].len & 0xFF;
// we need to create a local copy of IV, as it is modified during decryption.
memcpy(&iv, hdr[ENCRYPTIONIV].data, ivlen);
// Open an algorithm handle.
status = BCryptOpenAlgorithmProvider(
&aes,
BCRYPT_AES_ALGORITHM,
NULL,
0);
if(!NT_SUCCESS(status)) {
printf("[!] Error 0x%x returned by BCryptOpenAlgorithmProvider\n", status);
goto cleanup;
}
// Calculate the size of the buffer to hold the Key Object.
status = BCryptGetProperty(
aes,
BCRYPT_OBJECT_LENGTH,
(PBYTE)&key_objectlen,
sizeof(DWORD),
&tmp_len,
0);
if(!NT_SUCCESS(status)) {
printf("[!] Error 0x%x returned by BCryptGetProperty\n", status);
goto cleanup;
}
// We should use preallocated memory for better performance...
key_object = (PBYTE)HeapAlloc(GetProcessHeap(), 0, key_objectlen);
if(NULL == key_object) {
printf("[!] memory allocation failed\n");
goto cleanup;
}
status = BCryptSetProperty(
aes,
BCRYPT_CHAINING_MODE,
(PBYTE)BCRYPT_CHAIN_MODE_CBC,
sizeof(BCRYPT_CHAIN_MODE_CBC),
0);
if(!NT_SUCCESS(status)) {
printf("[!] Error 0x%x returned by BCryptSetProperty\n", status);
goto cleanup;
}
// Generate the key from supplied input key bytes.
status = BCryptGenerateSymmetricKey(
aes,
&ctx,
key_object,
key_objectlen,
masterkey,
32,
0);
if(!NT_SUCCESS(status)) {
printf("[!] Error 0x%x returned by BCryptGenerateSymmetricKey\n", status);
goto cleanup;
}
status = BCryptDecrypt(
ctx,
payload->encrypted,
hdr[STREAMSTARTBYTES].len,
NULL,
iv,
ivlen,
plaintext,
sizeof(plaintext),
&tmp_len,
0);
if(!NT_SUCCESS(status)) {
printf("[!] Error 0x%x returned by BCryptDecrypt\n", status);
goto cleanup;
}
// success!
if (0 == memcmp(plaintext, hdr[STREAMSTARTBYTES].data, hdr[STREAMSTARTBYTES].len)) {
res = true;
payload->decrypted = malloc(hdr[STREAMSTARTBYTES].len);
memcpy(payload->decrypted, plaintext, hdr[STREAMSTARTBYTES].len);
}
cleanup:
if(aes) {
BCryptCloseAlgorithmProvider(aes,0);
}
if (ctx) {
BCryptDestroyKey(ctx);
}
if(key_object) {
HeapFree(GetProcessHeap(), 0, key_object);
}
return res;
}
//----------------------------------------------------------------------------
//
// PerformKeyDerivation
//
//----------------------------------------------------------------------------
NTSTATUS
PeformKeyDerivation(
_In_ DWORD ArrayIndex
)
{
NTSTATUS Status;
BCRYPT_ALG_HANDLE KdfAlgHandle = NULL;
BCRYPT_KEY_HANDLE SecretKeyHandle = NULL;
DWORD ResultLength = 0;
PBYTE DerivedKey = NULL;
DWORD DerivedKeyLength = 0;
Status = BCryptOpenAlgorithmProvider(
&KdfAlgHandle, // Alg Handle pointer
KdfAlgorithmNameArray[ArrayIndex],
// Cryptographic Algorithm name (null terminated unicode string)
NULL, // Provider name; if null, the default provider is loaded
0); // Flags
if( !NT_SUCCESS(Status) )
{
ReportError(Status);
goto cleanup;
}
Status = BCryptGenerateSymmetricKey(
KdfAlgHandle, // Algorithm Handle
&SecretKeyHandle, // A pointer to a key handle
NULL, // Buffer that recieves the key object;NULL implies memory is allocated and freed by the function
0, // Size of the buffer in bytes
(PBYTE) Secret, // Buffer that contains the key material
sizeof(Secret), // Size of the buffer in bytes
0); // Flags
if( !NT_SUCCESS(Status) )
{
ReportError(Status);
goto cleanup;
}
//
// Derive the key
//
DerivedKeyLength = DERIVED_KEY_LEN;
DerivedKey = (PBYTE)HeapAlloc(GetProcessHeap(), 0, DerivedKeyLength);
if( NULL == DerivedKey )
{
Status = STATUS_NO_MEMORY;
ReportError(Status);
goto cleanup;
}
// Generic parameters:
// KDF_GENERIC_PARAMETER and KDF_HASH_ALGORITHM are the generic parameters that can be passed for the following KDF algorithms:
// BCRYPT_SP800108_CTR_HMAC_ALGORITHM
// KDF_GENERIC_PARAMETER = KDF_LABEL||0x00||KDF_CONTEXT
// BCRYPT_SP80056A_CONCAT_ALGORITHM
// KDF_GENERIC_PARAMETER = KDF_ALGORITHMID || KDF_PARTYUINFO || KDF_PARTYVINFO {|| KDF_SUPPPUBINFO } {|| KDF_SUPPPRIVINFO }
// BCRYPT_PBKDF2_ALGORITHM
// KDF_GENERIC_PARAMETER = KDF_SALT
// BCRYPT_CAPI_KDF_ALGORITHM
// KDF_GENERIC_PARAMETER = Not used
//
// Alternatively, KDF specific parameters can be passed.
// For BCRYPT_SP800108_CTR_HMAC_ALGORITHM:
// KDF_HASH_ALGORITHM, KDF_LABEL and KDF_CONTEXT are required
// For BCRYPT_SP80056A_CONCAT_ALGORITHM:
// KDF_HASH_ALGORITHM, KDF_ALGORITHMID, KDF_PARTYUINFO, KDF_PARTYVINFO are required
// KDF_SUPPPUBINFO, KDF_SUPPPRIVINFO are optional
// For BCRYPT_PBKDF2_ALGORITHM
// KDF_HASH_ALGORITHM is required
// KDF_ITERATION_COUNT, KDF_SALT are optional
// Iteration count, (if not specified) will default to 10,000
// For BCRYPT_CAPI_KDF_ALGORITHM
// KDF_HASH_ALGORITHM is required
//
//
// This sample uses KDF specific parameters defined in KeyDerivation.h
//
Status = BCryptKeyDerivation(
SecretKeyHandle, // Handle to the password key
&ParamList[ArrayIndex], // Parameters to the KDF algorithm
DerivedKey, // Address of the buffer which recieves the derived bytes
DerivedKeyLength, // Size of the buffer in bytes
&ResultLength, // Variable that recieves number of bytes copied to above buffer
0); // Flags
if( !NT_SUCCESS(Status) )
{
ReportError(Status);
goto cleanup;
}
//
// DerivedKeyLength bytes have been derived
//
cleanup:
if( NULL != DerivedKey )
{
HeapFree( GetProcessHeap(), 0, DerivedKey);
DerivedKey = NULL;
}
if( NULL != SecretKeyHandle )
{
Status = BCryptDestroyKey(SecretKeyHandle);
if( !NT_SUCCESS(Status) )
{
ReportError(Status);
}
SecretKeyHandle = NULL;
}
if( NULL != KdfAlgHandle )
{
Status = BCryptCloseAlgorithmProvider(KdfAlgHandle,0);
if( !NT_SUCCESS(Status) )
{
ReportError(Status);
}
KdfAlgHandle = NULL;
}
return Status;
}
int aes_transformkey(m0_kdbx_header_entry_t *hdr, uint8_t *tkey, size_t tkeylen)
{
BCRYPT_ALG_HANDLE aes = NULL;
BCRYPT_KEY_HANDLE key = NULL;
NTSTATUS status = 0;
DWORD len_ciphertext = 0,
tmp_len = 0,
key_objectlen = 0;
PBYTE key_object = NULL;
uint64_t rounds = 0;
// Open an algorithm handle.
status = BCryptOpenAlgorithmProvider(
&aes,
BCRYPT_AES_ALGORITHM,
NULL,
0);
if(!NT_SUCCESS(status)) {
printf("[!] Error 0x%x returned by BCryptOpenAlgorithmProvider\n", status);
goto cleanup;
}
// Calculate the size of the buffer to hold the KeyObject.
status = BCryptGetProperty(
aes,
BCRYPT_OBJECT_LENGTH,
(PBYTE)&key_objectlen,
sizeof(DWORD),
&tmp_len,
0);
if(!NT_SUCCESS(status)) {
printf("[!] Error 0x%x returned by BCryptGetProperty\n", status);
goto cleanup;
}
// Allocate the key object on the heap.
key_object = (PBYTE)HeapAlloc(GetProcessHeap(), 0, key_objectlen);
if(NULL == key_object) {
printf("[!] memory allocation failed\n");
goto cleanup;
}
status = BCryptSetProperty(
aes,
BCRYPT_CHAINING_MODE,
(PBYTE)BCRYPT_CHAIN_MODE_ECB,
sizeof(BCRYPT_CHAIN_MODE_ECB),
0);
if(!NT_SUCCESS(status)) {
printf("[!] Error 0x%x returned by BCryptSetProperty\n", status);
goto cleanup;
}
// Generate the key from supplied input key bytes.
status = BCryptGenerateSymmetricKey(
aes,
&key,
key_object,
key_objectlen,
hdr[TRANSFORMSEED].data,
hdr[TRANSFORMSEED].len,
0);
if(!NT_SUCCESS(status)) {
printf("[!] Error 0x%x returned by BCryptGenerateSymmetricKey\n", status);
goto cleanup;
}
status = BCryptEncrypt(
key,
tkey,
tkeylen,
NULL,
NULL,
0,
NULL,
0,
&len_ciphertext,
0);
if(!NT_SUCCESS(status)) {
printf("[!] Error 0x%x returned by BCryptEncrypt (calculate)\n", status);
goto cleanup;
}
for(rounds = 0; rounds < hdr[TRANSFORMROUNDS].qw; rounds++) {
status = BCryptEncrypt(
key,
tkey,
tkeylen,
NULL,
NULL,
0,
tkey,
tkeylen,
&tmp_len,
0);
if(!NT_SUCCESS(status)) {
printf("[!] Error 0x%x returned by BCryptEncrypt (encrypt)\n", status);
goto cleanup;
}
}
cleanup:
if(aes) {
BCryptCloseAlgorithmProvider(aes,0);
}
if (key) {
BCryptDestroyKey(key);
}
if(key_object) {
HeapFree(GetProcessHeap(), 0, key_object);
}
return status;
}
static void test_sha1(void)
{
static const char expected[] = "961fa64958818f767707072755d7018dcd278e94";
BCRYPT_ALG_HANDLE alg;
BCRYPT_HASH_HANDLE hash;
UCHAR buf[512], sha1[20];
ULONG size, len;
char str[41];
NTSTATUS ret;
alg = NULL;
ret = BCryptOpenAlgorithmProvider(&alg, BCRYPT_SHA1_ALGORITHM, MS_PRIMITIVE_PROVIDER, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(alg != NULL, "alg not set\n");
len = size = 0xdeadbeef;
ret = BCryptGetProperty(NULL, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len, sizeof(len), &size, 0);
ok(ret == STATUS_INVALID_HANDLE, "got %08x\n", ret);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, NULL, (UCHAR *)&len, sizeof(len), &size, 0);
ok(ret == STATUS_INVALID_PARAMETER, "got %08x\n", ret);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len, sizeof(len), NULL, 0);
ok(ret == STATUS_INVALID_PARAMETER, "got %08x\n", ret);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, NULL, sizeof(len), &size, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(size == sizeof(len), "got %u\n", size);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len, 0, &size, 0);
ok(ret == STATUS_BUFFER_TOO_SMALL, "got %08x\n", ret);
ok(len == 0xdeadbeef, "got %u\n", len);
ok(size == sizeof(len), "got %u\n", size);
len = size = 0xdeadbeef;
ret = BCryptGetProperty(alg, BCRYPT_OBJECT_LENGTH, (UCHAR *)&len , sizeof(len), &size, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(len != 0xdeadbeef, "len not set\n");
ok(size == sizeof(len), "got %u\n", size);
test_hash_length(alg, 20);
test_alg_name(alg, "SHA1");
hash = NULL;
len = sizeof(buf);
ret = BCryptCreateHash(alg, &hash, buf, len, NULL, 0, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ok(hash != NULL, "hash not set\n");
ret = BCryptHashData(hash, (UCHAR *)"test", sizeof("test"), 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
test_hash_length(hash, 20);
test_alg_name(hash, "SHA1");
memset(sha1, 0, sizeof(sha1));
ret = BCryptFinishHash(hash, sha1, sizeof(sha1), 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
format_hash( sha1, sizeof(sha1), str );
ok(!strcmp(str, expected), "got %s\n", str);
ret = BCryptDestroyHash(hash);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
ret = BCryptCloseAlgorithmProvider(alg, 0);
ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
}
NTSTATUS KphHashFile(
__in PUNICODE_STRING FileName,
__out PVOID *Hash,
__out PULONG HashSize
)
{
NTSTATUS status;
BCRYPT_ALG_HANDLE hashAlgHandle = NULL;
ULONG querySize;
ULONG hashObjectSize;
ULONG hashSize;
PVOID hashObject = NULL;
PVOID hash = NULL;
BCRYPT_HASH_HANDLE hashHandle = NULL;
OBJECT_ATTRIBUTES objectAttributes;
IO_STATUS_BLOCK iosb;
HANDLE fileHandle = NULL;
FILE_STANDARD_INFORMATION standardInfo;
ULONG remainingBytes;
ULONG bytesToRead;
PVOID buffer = NULL;
PAGED_CODE();
// Open the hash algorithm and allocate memory for the hash object.
if (!NT_SUCCESS(status = BCryptOpenAlgorithmProvider(&hashAlgHandle, KPH_HASH_ALGORITHM, NULL, 0)))
goto CleanupExit;
if (!NT_SUCCESS(status = BCryptGetProperty(hashAlgHandle, BCRYPT_OBJECT_LENGTH,
(PUCHAR)&hashObjectSize, sizeof(ULONG), &querySize, 0)))
{
goto CleanupExit;
}
if (!NT_SUCCESS(status = BCryptGetProperty(hashAlgHandle, BCRYPT_HASH_LENGTH, (PUCHAR)&hashSize,
sizeof(ULONG), &querySize, 0)))
{
goto CleanupExit;
}
if (!(hashObject = ExAllocatePoolWithTag(PagedPool, hashObjectSize, 'vhpK')))
{
status = STATUS_INSUFFICIENT_RESOURCES;
goto CleanupExit;
}
if (!(hash = ExAllocatePoolWithTag(PagedPool, hashSize, 'vhpK')))
{
status = STATUS_INSUFFICIENT_RESOURCES;
goto CleanupExit;
}
if (!NT_SUCCESS(status = BCryptCreateHash(hashAlgHandle, &hashHandle, hashObject, hashObjectSize,
NULL, 0, 0)))
{
goto CleanupExit;
}
// Open the file and compute the hash.
InitializeObjectAttributes(&objectAttributes, FileName, OBJ_KERNEL_HANDLE, NULL, NULL);
if (!NT_SUCCESS(status = ZwCreateFile(&fileHandle, FILE_GENERIC_READ, &objectAttributes,
&iosb, NULL, FILE_ATTRIBUTE_NORMAL, FILE_SHARE_READ, FILE_OPEN,
FILE_NON_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT, NULL, 0)))
{
goto CleanupExit;
}
if (!NT_SUCCESS(status = ZwQueryInformationFile(fileHandle, &iosb, &standardInfo,
sizeof(FILE_STANDARD_INFORMATION), FileStandardInformation)))
{
goto CleanupExit;
}
if (standardInfo.EndOfFile.QuadPart <= 0)
{
status = STATUS_UNSUCCESSFUL;
goto CleanupExit;
}
if (standardInfo.EndOfFile.QuadPart > FILE_MAX_SIZE)
{
status = STATUS_FILE_TOO_LARGE;
goto CleanupExit;
}
if (!(buffer = ExAllocatePoolWithTag(PagedPool, FILE_BUFFER_SIZE, 'vhpK')))
{
status = STATUS_INSUFFICIENT_RESOURCES;
goto CleanupExit;
}
remainingBytes = (ULONG)standardInfo.EndOfFile.QuadPart;
while (remainingBytes != 0)
{
bytesToRead = FILE_BUFFER_SIZE;
if (bytesToRead > remainingBytes)
bytesToRead = remainingBytes;
if (!NT_SUCCESS(status = ZwReadFile(fileHandle, NULL, NULL, NULL, &iosb, buffer, bytesToRead,
NULL, NULL)))
{
goto CleanupExit;
}
if ((ULONG)iosb.Information != bytesToRead)
{
status = STATUS_INTERNAL_ERROR;
goto CleanupExit;
}
if (!NT_SUCCESS(status = BCryptHashData(hashHandle, buffer, bytesToRead, 0)))
goto CleanupExit;
remainingBytes -= bytesToRead;
}
if (!NT_SUCCESS(status = BCryptFinishHash(hashHandle, hash, hashSize, 0)))
goto CleanupExit;
if (NT_SUCCESS(status))
{
*Hash = hash;
*HashSize = hashSize;
hash = NULL; // Don't free this in the cleanup section
}
CleanupExit:
if (buffer)
ExFreePoolWithTag(buffer, 'vhpK');
if (fileHandle)
ZwClose(fileHandle);
if (hashHandle)
BCryptDestroyHash(hashHandle);
if (hash)
ExFreePoolWithTag(hash, 'vhpK');
if (hashObject)
ExFreePoolWithTag(hashObject, 'vhpK');
if (hashAlgHandle)
BCryptCloseAlgorithmProvider(hashAlgHandle, 0);
return status;
}