rsaenh: Don't return salt for algorithms that don't support it.

dlls/rsaenh/rsaenh.c

@@ -3513,8 +3513,16 @@ BOOL WINAPI RSAENH_CPGetKeyParam(HCRYPTPROV hProv, HCRYPTKEY hKey, DWORD dwParam
                               pCryptKey->dwBlockLen);
         
         case KP_SALT:
-            return copy_param(pbData, pdwDataLen, 
-                    &pCryptKey->abKeyValue[pCryptKey->dwKeyLen], pCryptKey->dwSaltLen);
+            switch (pCryptKey->aiAlgid) {
+                case CALG_RC2:
+                case CALG_RC4:
+                    return copy_param(pbData, pdwDataLen,
+                            &pCryptKey->abKeyValue[pCryptKey->dwKeyLen],
+                            pCryptKey->dwSaltLen);
+                default:
+                    SetLastError(NTE_BAD_KEY);
+                    return FALSE;
+            }
 
         case KP_PADDING:
             dwValue = PKCS5_PADDING;

dlls/rsaenh/tests/rsaenh.c

@@ -744,7 +744,6 @@ static void test_aes(int keylen)
 
     /* AES provider doesn't support salt */
     result = CryptGetKeyParam(hKey, KP_SALT, NULL, &dwLen, 0);
-    todo_wine
     ok(!result && (GetLastError() == NTE_BAD_KEY || GetLastError() == ERROR_NO_TOKEN /* Win7 */),
        "expected NTE_BAD_KEY or ERROR_NO_TOKEN, got %08x\n", GetLastError());
 
@@ -1742,7 +1741,6 @@ static void test_rsa_encrypt(void)
 
     /* An RSA key doesn't support salt */
     result = CryptGetKeyParam(hRSAKey, KP_SALT, NULL, &dwLen, 0);
-    todo_wine
     ok(!result && GetLastError() == NTE_BAD_KEY,
        "expected NTE_BAD_KEY, got %08x\n", GetLastError());