[PATCH 1/6] bcrypt: Implement BCryptDuplicateKey.

[Alistair Leslie-Hughes]

From: Michael Müller

Signed-off-by: Alistair Leslie-Hughes 
---
 dlls/bcrypt/bcrypt.spec   |  2 +-
 dlls/bcrypt/bcrypt_main.c | 67 +++++++++++++++++++++++++++++++++++++++++++++++
 dlls/ncrypt/ncrypt.spec   |  2 +-
 3 files changed, 69 insertions(+), 2 deletions(-)

diff --git a/dlls/bcrypt/bcrypt.spec b/dlls/bcrypt/bcrypt.spec
index 21b54b4..28c2394 100644
--- a/dlls/bcrypt/bcrypt.spec
+++ b/dlls/bcrypt/bcrypt.spec
@@ -12,7 +12,7 @@
 @ stdcall BCryptDestroyKey(ptr)
 @ stub BCryptDestroySecret
 @ stdcall BCryptDuplicateHash(ptr ptr ptr long long)
-@ stub BCryptDuplicateKey
+@ stdcall BCryptDuplicateKey(ptr ptr ptr long long)
 @ stdcall BCryptEncrypt(ptr ptr long ptr ptr long ptr long ptr long)
 @ stdcall BCryptEnumAlgorithms(long ptr ptr long)
 @ stub BCryptEnumContextFunctionProviders
diff --git a/dlls/bcrypt/bcrypt_main.c b/dlls/bcrypt/bcrypt_main.c
index cd44bdf..c571db7 100644
--- a/dlls/bcrypt/bcrypt_main.c
+++ b/dlls/bcrypt/bcrypt_main.c
@@ -953,6 +953,24 @@ static NTSTATUS set_key_property( struct key *key, const WCHAR *prop, UCHAR *val
     return STATUS_NOT_IMPLEMENTED;
 }

+static NTSTATUS key_duplicate( struct key *key_orig, struct key *key_copy )
+{
+    UCHAR *buffer;
+
+    if (!(buffer = HeapAlloc( GetProcessHeap(), 0, key_orig->secret_len ))) return STATUS_NO_MEMORY;
+    memcpy( buffer, key_orig->secret, key_orig->secret_len );
+
+    key_copy->hdr           = key_orig->hdr;
+    key_copy->alg_id        = key_orig->alg_id;
+    key_copy->mode          = key_orig->mode;
+    key_copy->block_size    = key_orig->block_size;
+    key_copy->handle        = NULL;
+    key_copy->secret        = buffer;
+    key_copy->secret_len    = key_orig->secret_len;
+
+    return STATUS_SUCCESS;
+}
+
 static gnutls_cipher_algorithm_t get_gnutls_cipher( const struct key *key )
 {
     switch (key->alg_id)
@@ -1094,6 +1112,25 @@ static NTSTATUS set_key_property( struct key *key, const WCHAR *prop, UCHAR *val
     return STATUS_NOT_IMPLEMENTED;
 }

+static NTSTATUS key_duplicate( struct key *key_orig, struct key *key_copy )
+{
+    UCHAR *buffer;
+
+    if (!(buffer = HeapAlloc( GetProcessHeap(), 0, key_orig->secret_len ))) return STATUS_NO_MEMORY;
+    memcpy( buffer, key_orig->secret, key_orig->secret_len );
+
+    key_copy->hdr           = key_orig->hdr;
+    key_copy->alg_id        = key_orig->alg_id;
+    key_copy->mode          = key_orig->mode;
+    key_copy->block_size    = key_orig->block_size;
+    key_copy->ref_encrypt   = NULL;
+    key_copy->ref_decrypt   = NULL;
+    key_copy->secret        = buffer;
+    key_copy->secret_len    = key_orig->secret_len;
+
+    return STATUS_SUCCESS;
+}
+
 static NTSTATUS key_set_params( struct key *key, UCHAR *iv, ULONG iv_len )
 {
     CCCryptorStatus status;
@@ -1182,6 +1219,12 @@ static NTSTATUS set_key_property( struct key *key, const WCHAR *prop, UCHAR *val
     return STATUS_NOT_IMPLEMENTED;
 }

+static NTSTATUS key_duplicate( struct key *key_orig, struct key *key_copy )
+{
+    ERR( "support for keys not available at build time\n" );
+    return STATUS_NOT_IMPLEMENTED;
+}
+
 static NTSTATUS key_set_params( struct key *key, UCHAR *iv, ULONG iv_len )
 {
     ERR( "support for keys not available at build time\n" );
@@ -1310,6 +1353,30 @@ NTSTATUS WINAPI BCryptExportKey(BCRYPT_KEY_HANDLE export_key, BCRYPT_KEY_HANDLE
     return key_export( key, type, output, output_len, size );
 }

+NTSTATUS WINAPI BCryptDuplicateKey( BCRYPT_KEY_HANDLE handle, BCRYPT_KEY_HANDLE *handle_copy,
+                                    UCHAR *object, ULONG object_len, ULONG flags )
+{
+    struct key *key_orig = handle;
+    struct key *key_copy;
+    NTSTATUS status;
+
+    TRACE( "%p, %p, %p, %u, %08x\n", handle, handle_copy, object, object_len, flags );
+
+    if (!key_orig || key_orig->hdr.magic != MAGIC_KEY) return STATUS_INVALID_HANDLE;
+    if (!handle_copy) return STATUS_INVALID_PARAMETER;
+    if (!(key_copy = HeapAlloc( GetProcessHeap(), 0, sizeof(*key_copy) )))
+        return STATUS_NO_MEMORY;
+
+    if ((status = key_duplicate( key_orig, key_copy )))
+    {
+        HeapFree( GetProcessHeap(), 0, key_copy );
+        return status;
+    }
+
+    *handle_copy = key_copy;
+    return STATUS_SUCCESS;
+}
+
 NTSTATUS WINAPI BCryptDestroyKey( BCRYPT_KEY_HANDLE handle )
 {
     struct key *key = handle;
diff --git a/dlls/ncrypt/ncrypt.spec b/dlls/ncrypt/ncrypt.spec
index 5d5fae0..d0f0f56 100644
--- a/dlls/ncrypt/ncrypt.spec
+++ b/dlls/ncrypt/ncrypt.spec
@@ -14,7 +14,7 @@
 @ stdcall BCryptDestroyKey(ptr) bcrypt.BCryptDestroyKey
 @ stub BCryptDestroySecret
 @ stdcall BCryptDuplicateHash(ptr ptr ptr long long) bcrypt.BCryptDuplicateHash
-@ stub BCryptDuplicateKey
+@ stdcall BCryptDuplicateKey(ptr ptr ptr long long) bcrypt.BCryptDuplicateKey
 @ stdcall BCryptEncrypt(ptr ptr long ptr ptr long ptr long ptr long) bcrypt.BCryptEncrypt
 @ stdcall BCryptEnumAlgorithms(long ptr ptr long) bcrypt.BCryptEnumAlgorithms
 @ stub BCryptEnumContextFunctionProviders