Hans Leidekker : ncrypt: Implement NCryptExportKey().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 07f9952a2450c7d203a0b1a5c6e501cd870867ed
URL:    https://gitlab.winehq.org/wine/wine/-/commit/07f9952a2450c7d203a0b1a5c6e501c...

Author: Hans Leidekker 
Date:   Wed Nov 23 18:49:20 2022 +0100

ncrypt: Implement NCryptExportKey().

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=53966

---

dlls/ncrypt/main.c      | 27 +++++++++++++++++++++++++++
 dlls/ncrypt/ncrypt.spec |  2 +-
 include/ncrypt.h        |  5 ++++-
 3 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/dlls/ncrypt/main.c b/dlls/ncrypt/main.c
index 89fbfcb795a..6f79985108d 100644
--- a/dlls/ncrypt/main.c
+++ b/dlls/ncrypt/main.c
@@ -413,6 +413,33 @@ SECURITY_STATUS WINAPI NCryptImportKey(NCRYPT_PROV_HANDLE provider, NCRYPT_KEY_H
     return ERROR_SUCCESS;
 }

+SECURITY_STATUS WINAPI NCryptExportKey(NCRYPT_KEY_HANDLE key, NCRYPT_KEY_HANDLE encrypt_key, const WCHAR *type,
+                                       NCryptBufferDesc *params, BYTE *output, DWORD output_len, DWORD *ret_len,
+                                       DWORD flags)
+{
+    struct object *object = (struct object *)key;
+
+    TRACE("(%#Ix, %#Ix, %s, %p, %p, %lu, %p, %#lx)\n", key, encrypt_key, wine_dbgstr_w(type), params, output,
+          output_len, ret_len, flags);
+
+    if (encrypt_key)
+    {
+        FIXME("Key blob encryption not implemented\n");
+        return NTE_NOT_SUPPORTED;
+    }
+    if (params)
+    {
+        FIXME("Parameter information not implemented\n");
+        return NTE_NOT_SUPPORTED;
+    }
+    if (flags == NCRYPT_SILENT_FLAG)
+    {
+        FIXME("Silent flag not implemented\n");
+    }
+
+    return map_ntstatus(BCryptExportKey(object->key.bcrypt_key, NULL, type, output, output_len, ret_len, 0));
+}
+
 SECURITY_STATUS WINAPI NCryptIsAlgSupported(NCRYPT_PROV_HANDLE provider, const WCHAR *algid, DWORD flags)
 {
     static const ULONG supported = BCRYPT_CIPHER_OPERATION |\
diff --git a/dlls/ncrypt/ncrypt.spec b/dlls/ncrypt/ncrypt.spec
index 60b367260d5..99fb9a59ee4 100644
--- a/dlls/ncrypt/ncrypt.spec
+++ b/dlls/ncrypt/ncrypt.spec
@@ -70,7 +70,7 @@
 @ stdcall NCryptEnumAlgorithms(long long ptr ptr long)
 @ stdcall NCryptEnumKeys(long wstr ptr ptr long)
 @ stub NCryptEnumStorageProviders
-@ stub NCryptExportKey
+@ stdcall NCryptExportKey(long long wstr ptr ptr long ptr long)
 @ stdcall NCryptFinalizeKey(long long)
 @ stdcall NCryptFreeBuffer(ptr)
 @ stdcall NCryptFreeObject(long)
diff --git a/include/ncrypt.h b/include/ncrypt.h
index 18198fdc5bb..bd77c692fc6 100644
--- a/include/ncrypt.h
+++ b/include/ncrypt.h
@@ -110,9 +110,12 @@ typedef ULONG_PTR NCRYPT_SECRET_HANDLE;
 #define NCRYPT_SCARD_PIN_ID                     L"SmartCardPinId"
 #define NCRYPT_SCARD_PIN_INFO                   L"SmartCardPinInfo"

-SECURITY_STATUS WINAPI NCryptCreatePersistedKey(NCRYPT_PROV_HANDLE, NCRYPT_KEY_HANDLE *, const WCHAR *, const WCHAR *, DWORD, DWORD);
+SECURITY_STATUS WINAPI NCryptCreatePersistedKey(NCRYPT_PROV_HANDLE, NCRYPT_KEY_HANDLE *, const WCHAR *, const WCHAR *,
+                                                DWORD, DWORD);
 SECURITY_STATUS WINAPI NCryptDecrypt(NCRYPT_KEY_HANDLE, BYTE *, DWORD, void *, BYTE *, DWORD, DWORD *, DWORD);
 SECURITY_STATUS WINAPI NCryptEncrypt(NCRYPT_KEY_HANDLE, BYTE *, DWORD, void *, BYTE *, DWORD, DWORD *, DWORD);
+SECURITY_STATUS WINAPI NCryptExportKey(NCRYPT_KEY_HANDLE, NCRYPT_KEY_HANDLE, const WCHAR *, NCryptBufferDesc *, BYTE *,
+                                       DWORD, DWORD *, DWORD);
 SECURITY_STATUS WINAPI NCryptFinalizeKey(NCRYPT_KEY_HANDLE, DWORD);
 SECURITY_STATUS WINAPI NCryptFreeObject(NCRYPT_HANDLE);
 SECURITY_STATUS WINAPI NCryptGetProperty(NCRYPT_HANDLE, const WCHAR *, BYTE *, DWORD, DWORD *, DWORD);