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rsaenh: Load/store key permissions along with key pair value.

This commit is contained in:
Juan Lang 2009-01-28 22:02:25 -08:00 committed by Alexandre Julliard
parent bd41f77d3d
commit 2edda7208f
1 changed files with 105 additions and 0 deletions
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105
dlls/rsaenh/rsaenh.c
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@ -969,6 +969,62 @@ static void store_key_pair(HCRYPTKEY hCryptKey, HKEY hKey, DWORD dwKeySpec, DWOR
}
}
/******************************************************************************
* map_key_spec_to_permissions_name [Internal]
*
* Returns the name of the registry value associated with the permissions for
* a key spec.
*
* PARAMS
* dwKeySpec [I] AT_KEYEXCHANGE or AT_SIGNATURE
*
* RETURNS
* Success: Name of registry value.
* Failure: NULL
*/
static LPCSTR map_key_spec_to_permissions_name(DWORD dwKeySpec)
{
LPCSTR szValueName;
switch (dwKeySpec)
{
case AT_KEYEXCHANGE:
szValueName = "KeyExchangePermissions";
break;
case AT_SIGNATURE:
szValueName = "SignaturePermissions";
break;
default:
WARN("invalid key spec %d\n", dwKeySpec);
szValueName = NULL;
}
return szValueName;
}
/******************************************************************************
* store_key_permissions [Internal]
*
* Stores a key's permissions to the registry
*
* PARAMS
* hCryptKey [I] Handle to the key whose permissions are to be stored
* hKey [I] Registry key where the key permissions are to be stored
* dwKeySpec [I] AT_KEYEXCHANGE or AT_SIGNATURE
*/
static void store_key_permissions(HCRYPTKEY hCryptKey, HKEY hKey, DWORD dwKeySpec)
{
LPCSTR szValueName;
CRYPTKEY *pKey;
if (!(szValueName = map_key_spec_to_permissions_name(dwKeySpec)))
return;
if (lookup_handle(&handle_table, hCryptKey, RSAENH_MAGIC_KEY,
(OBJECTHDR**)&pKey))
RegSetValueExA(hKey, szValueName, 0, REG_DWORD,
(BYTE *)&pKey->dwPermissions,
sizeof(pKey->dwPermissions));
}
/******************************************************************************
* create_container_key [Internal]
*
@ -1092,6 +1148,39 @@ static void store_key_container_keys(KEYCONTAINER *pKeyContainer)
}
}
/******************************************************************************
* store_key_container_permissions [Internal]
*
* Stores key container's key permissions in a persistent location.
*
* PARAMS
* pKeyContainer [I] Pointer to the key container whose key permissions are to
* be saved
*/
static void store_key_container_permissions(KEYCONTAINER *pKeyContainer)
{
HKEY hKey;
DWORD dwFlags;
/* On WinXP, persistent keys are stored in a file located at:
* $AppData$\\Microsoft\\Crypto\\RSA\\$SID$\\some_hex_string
*/
if (pKeyContainer->dwFlags & CRYPT_MACHINE_KEYSET)
dwFlags = CRYPTPROTECT_LOCAL_MACHINE;
else
dwFlags = 0;
if (create_container_key(pKeyContainer, KEY_WRITE, &hKey))
{
store_key_permissions(pKeyContainer->hKeyExchangeKeyPair, hKey,
AT_KEYEXCHANGE);
store_key_permissions(pKeyContainer->hSignatureKeyPair, hKey,
AT_SIGNATURE);
RegCloseKey(hKey);
}
}
/******************************************************************************
* release_key_container_keys [Internal]
*
@ -1123,6 +1212,7 @@ static void destroy_key_container(OBJECTHDR *pObjectHdr)
if (!(pKeyContainer->dwFlags & CRYPT_VERIFYCONTEXT))
{
store_key_container_keys(pKeyContainer);
store_key_container_permissions(pKeyContainer);
release_key_container_keys(pKeyContainer);
}
HeapFree( GetProcessHeap(), 0, pKeyContainer );
@ -1229,6 +1319,21 @@ static BOOL read_key_value(HCRYPTPROV hKeyContainer, HKEY hKey, DWORD dwKeySpec,
HeapFree(GetProcessHeap(), 0, pbKey);
}
}
if (ret)
{
CRYPTKEY *pKey;
if (lookup_handle(&handle_table, *phCryptKey, RSAENH_MAGIC_KEY,
(OBJECTHDR**)&pKey))
{
if ((szValueName = map_key_spec_to_permissions_name(dwKeySpec)))
{
dwLen = sizeof(pKey->dwPermissions);
RegQueryValueExA(hKey, szValueName, 0, NULL,
(BYTE *)&pKey->dwPermissions, &dwLen);
}
}
}
return ret;
}