rsaenh: Don't reset the salt length after setting a salt for Base and Strong providers.

dlls/rsaenh/rsaenh.c

@@ -3462,6 +3462,8 @@ BOOL WINAPI RSAENH_CPSetKeyParam(HCRYPTPROV hProv, HCRYPTKEY hKey, DWORD dwParam
             switch (pCryptKey->aiAlgid) {
                 case CALG_RC2:
                 case CALG_RC4:
+                {
+                    KEYCONTAINER *pKeyContainer = get_key_container(pCryptKey->hProv);
                     if (!pbData)
                     {
                         SetLastError(ERROR_INVALID_PARAMETER);
@@ -3474,11 +3476,13 @@ BOOL WINAPI RSAENH_CPSetKeyParam(HCRYPTPROV hProv, HCRYPTKEY hKey, DWORD dwParam
                            pbData, 11);
                     pCryptKey->dwSaltLen = 11;
                     setup_key(pCryptKey);
-                    /* Strange but true: salt length reset to 0 after setting
-                     * it via KP_SALT.
-                     */
-                    pCryptKey->dwSaltLen = 0;
+                    /* After setting the salt value if the provider is not base or
+                     * strong the salt length will be reset. */
+                    if (pKeyContainer->dwPersonality != RSAENH_PERSONALITY_BASE &&
+                        pKeyContainer->dwPersonality != RSAENH_PERSONALITY_STRONG)
+                        pCryptKey->dwSaltLen = 0;
                     break;
+                }
                 default:
                     SetLastError(NTE_BAD_KEY);
                     return FALSE;

dlls/rsaenh/tests/rsaenh.c

@@ -62,7 +62,7 @@ static const cryptdata cTestData[4] = {
        12,12,16}
 };
 
-static int win2k;
+static int win2k, nt4;
 
 /*
  * 1. Take the MD5 Hash of the container name (with an extra null byte)
@@ -249,7 +249,10 @@ static void test_prov(void)
     SetLastError(0xdeadbeef);
     result = CryptGetProvParam(hProv, PP_SIG_KEYSIZE_INC, (BYTE*)&dwInc, &dwLen, 0);
     if (!result && GetLastError() == NTE_BAD_TYPE)
+    {
         skip("PP_SIG_KEYSIZE_INC is not supported (win9x or NT)\n");
+        nt4++;
+    }
     else
         ok(result && dwInc==8, "%08x, %d\n", GetLastError(), dwInc);
     
@@ -1472,16 +1475,16 @@ static void test_rc2(void)
         result = CryptDecrypt(hKey, 0, TRUE, 0, pbData, &dwDataLen);
         ok(result, "%08x\n", GetLastError());
 
-        /* Setting the salt also succeeds... */
+        /* Setting the salt value will not reset the salt length in base or strong providers */
         result = CryptSetKeyParam(hKey, KP_SALT, pbData, 0);
         ok(result, "setting salt failed: %08x\n", GetLastError());
-        /* but the resulting salt length is now zero? */
         dwLen = 0;
         result = CryptGetKeyParam(hKey, KP_SALT, NULL, &dwLen, 0);
         ok(result, "%08x\n", GetLastError());
-        ok(dwLen == 0 ||
-           broken(dwLen == 11), /* Win9x/WinMe/NT4 */
-           "unexpected salt length %d\n", dwLen);
+        if (BASE_PROV || STRONG_PROV)
+            ok(dwLen == 11, "expected salt length 11, got %d\n", dwLen);
+        else
+            ok(dwLen == 0 || broken(nt4 && dwLen == 11), "expected salt length 0, got %d\n", dwLen);
         /* What sizes salt can I set? */
         salt.pbData = pbData;
         for (i=0; i<24; i++)
@@ -1719,16 +1722,16 @@ static void test_rc4(void)
         result = CryptDecrypt(hKey, 0, TRUE, 0, pbData, &dwDataLen);
         ok(result, "%08x\n", GetLastError());
 
-        /* Setting the salt also succeeds... */
+        /* Setting the salt value will not reset the salt length in base or strong providers */
         result = CryptSetKeyParam(hKey, KP_SALT, pbData, 0);
         ok(result, "setting salt failed: %08x\n", GetLastError());
-        /* but the resulting salt length is now zero? */
         dwLen = 0;
         result = CryptGetKeyParam(hKey, KP_SALT, NULL, &dwLen, 0);
         ok(result, "%08x\n", GetLastError());
-        ok(dwLen == 0 ||
-           broken(dwLen == 11), /* Win9x/WinMe/NT4 */
-           "unexpected salt length %d\n", dwLen);
+        if (BASE_PROV || STRONG_PROV || nt4)
+            ok(dwLen == 11, "expected salt length 11, got %d\n", dwLen);
+        else
+            ok(dwLen == 0 || broken(nt4 && dwLen == 11), "expected salt length 0, got %d\n", dwLen);
         /* What sizes salt can I set? */
         salt.pbData = pbData;
         for (i=0; i<24; i++)