bcrypt: Implement BCryptDuplicateHash.

dlls/bcrypt/bcrypt.spec

@@ -11,7 +11,7 @@
 @ stdcall BCryptDestroyHash(ptr)
 @ stub BCryptDestroyKey
 @ stub BCryptDestroySecret
-@ stub BCryptDuplicateHash
+@ stdcall BCryptDuplicateHash(ptr ptr ptr long long)
 @ stub BCryptDuplicateKey
 @ stub BCryptEncrypt
 @ stdcall BCryptEnumAlgorithms(long ptr ptr long)

dlls/bcrypt/bcrypt_main.c

@@ -536,6 +536,27 @@ end:
     return STATUS_SUCCESS;
 }
 
+NTSTATUS WINAPI BCryptDuplicateHash( BCRYPT_HASH_HANDLE handle, BCRYPT_HASH_HANDLE *handle_copy,
+                                     UCHAR *object, ULONG objectlen, ULONG flags )
+{
+    struct hash *hash_orig = handle;
+    struct hash *hash_copy;
+
+    TRACE( "%p, %p, %p, %u, %u\n", handle, handle_copy, object, objectlen, flags );
+
+    if (!hash_orig || hash_orig->hdr.magic != MAGIC_HASH) return STATUS_INVALID_HANDLE;
+    if (!handle_copy) return STATUS_INVALID_PARAMETER;
+    if (object) FIXME( "ignoring object buffer\n" );
+
+    if (!(hash_copy = HeapAlloc( GetProcessHeap(), 0, sizeof(*hash_copy) )))
+        return STATUS_NO_MEMORY;
+
+    memcpy( hash_copy, hash_orig, sizeof(*hash_orig) );
+
+    *handle_copy = hash_copy;
+    return STATUS_SUCCESS;
+}
+
 NTSTATUS WINAPI BCryptDestroyHash( BCRYPT_HASH_HANDLE handle )
 {
     struct hash *hash = handle;

dlls/ncrypt/ncrypt.spec

@@ -13,7 +13,7 @@
 @ stdcall BCryptDestroyHash(ptr) bcrypt.BCryptDestroyHash
 @ stub BCryptDestroyKey
 @ stub BCryptDestroySecret
-@ stub BCryptDuplicateHash
+@ stdcall BCryptDuplicateHash(ptr ptr ptr long long) bcrypt.BCryptDuplicateHash
 @ stub BCryptDuplicateKey
 @ stub BCryptEncrypt
 @ stdcall BCryptEnumAlgorithms(long ptr ptr long) bcrypt.BCryptEnumAlgorithms