There is a смарт-карта . I want to use it for authentication. To make a window appear as in Windows when logging on. Initially, I tried a bunch of libs to communicate directly with the reader. Card type I have CardOS . Reader Athena . I didn’t find anything worthwhile, and I got the idea to use Windows authentication. Collected this long code from below. Everything is working. Nearly. A window with a request to enter a login pass is working. I also see the login password myself. However, I cannot understand how to verify this data. How to check the correct password?
public partial class Form1 : Form { [System.Runtime.InteropServices.DllImport("advapi32.dll")] public static extern bool LogonUser(string userName, string domainName, string password, int LogonType, int LogonProvider, ref IntPtr phToken); public Form1() { InitializeComponent(); } private void btnLogin_Click(object sender, EventArgs e) { string userName = WindowsIdentity.GetCurrent().Name; string password = " "; IntPtr userNamePtr = IntPtr.Zero; IntPtr passwordPtr = IntPtr.Zero; Int32 authPackage = 0; IntPtr outAuthBuffer = IntPtr.Zero; Int32 outAuthBufferSize = 0; IntPtr inAuthBuffer = IntPtr.Zero; Int32 inAuthBufferSize = 0; Boolean save = true; using (SecureString userNameS = new SecureString()) using (SecureString passwordS = new SecureString()) { if (!String.IsNullOrEmpty(userName)) { foreach (char c in userName) userNameS.AppendChar(c); } if (!String.IsNullOrEmpty(password)) { foreach (char c in password) passwordS.AppendChar(c); } userNameS.MakeReadOnly(); passwordS.MakeReadOnly(); userNamePtr = Marshal.SecureStringToCoTaskMemUnicode(userNameS); passwordPtr = Marshal.SecureStringToCoTaskMemUnicode(passwordS); } NativeMethods.CREDUI_INFO credui = new NativeMethods.CREDUI_INFO(); credui.pszCaptionText = "Please enter the credentails for "; credui.pszMessageText = "DisplayedMessage"; credui.cbSize = Marshal.SizeOf(credui); if (userNamePtr != IntPtr.Zero || passwordPtr != IntPtr.Zero) { inAuthBufferSize = 1024; inAuthBuffer = Marshal.AllocCoTaskMem(inAuthBufferSize); if (!NativeMethods.CredPackAuthenticationBuffer(0x00, userNamePtr, passwordPtr, inAuthBuffer, ref inAuthBufferSize)) { } } NativeMethods.CredUIPromptForWindowsCredentials(credui, 0, ref authPackage, inAuthBuffer, inAuthBufferSize, out outAuthBuffer, out outAuthBufferSize, ref save, PromptForWindowsCredentialsFlag.CREDUIWIN_AUTHPACKAGE_ONLY ); NativeMethods.CredUnPackAuthenticationBufferWrap(true, outAuthBuffer, outAuthBufferSize); } private string GetloggedinUserName() { System.Security.Principal.WindowsIdentity currentUser = System.Security.Principal.WindowsIdentity.GetCurrent(); return currentUser.Name; } } } [Flags] public enum PromptForWindowsCredentialsFlag { CREDUIWIN_GENERIC = 0x00000001, CREDUIWIN_CHECKBOX = 0x00000002, CREDUIWIN_AUTHPACKAGE_ONLY = 0x00000010, CREDUIWIN_IN_CRED_ONLY = 0x00000020, CREDUIWIN_ENUMERATE_ADMINS = 0x00000100, CREDUIWIN_ENUMERATE_CURRENT_USER = 0x00000200, CREDUIWIN_SECURE_PROMPT = 0x00001000, CREDUIWIN_PACK_32_WOW = 0x10000000 } [Flags] public enum PromptForCredentialsFlag { CREDUI_FLAGS_INCORRECT_PASSWORD = 0x00001, CREDUI_FLAGS_DO_NOT_PERSIST = 0x00002, CREDUI_FLAGS_REQUEST_ADMINISTRATOR = 0x00004, CREDUI_FLAGS_EXCLUDE_CERTIFICATES = 0x00008, CREDUI_FLAGS_REQUIRE_CERTIFICATE = 0x00010, CREDUI_FLAGS_SHOW_SAVE_CHECK_BOX = 0x00040, CREDUI_FLAGS_ALWAYS_SHOW_UI = 0x00080, CREDUI_FLAGS_REQUIRE_SMARTCARD = 0x00100, CREDUI_FLAGS_PASSWORD_ONLY_OK = 0x00200, CREDUI_FLAGS_VALIDATE_USERNAME = 0x00400, CREDUI_FLAGS_COMPLETE_USERNAME = 0x00800, CREDUI_FLAGS_PERSIST = 0x01000, CREDUI_FLAGS_SERVER_CREDENTIAL = 0x04000, CREDUI_FLAGS_EXPECT_CONFIRMATION = 0x20000, CREDUI_FLAGS_GENERIC_CREDENTIALS = 0x40000, CREDUI_FLAGS_USERNAME_TARGET_CREDENTIALS = 0x80000, CREDUI_FLAGS_KEEP_USERNAME = 0x100000 } public static class NativeMethods { public const Int32 CREDUI_MAX_MESSAGE_LENGTH = 32767; public const Int32 CREDUI_MAX_CAPTION_LENGTH = 128; public const Int32 CRED_MAX_USERNAME_LENGTH = (256 + 1 + 256); public const Int32 CREDUI_MAX_USERNAME_LENGTH = CRED_MAX_USERNAME_LENGTH; public const Int32 CREDUI_MAX_PASSWORD_LENGTH = (512 / 2); public enum CredUIPromptReturnCode { Success = 0, Cancelled = 1223, InvalidParameter = 87, InvalidFlags = 1004 } [StructLayout(LayoutKind.Sequential)] public class CREDUI_INFO { public Int32 cbSize; public IntPtr hwndParent; [MarshalAs(UnmanagedType.LPWStr)] public String pszMessageText; [MarshalAs(UnmanagedType.LPWStr)] public String pszCaptionText; public IntPtr hbmBanner; public CREDUI_INFO() { cbSize = Marshal.SizeOf(typeof(CREDUI_INFO)); } } [DllImport("credui.dll", CharSet = CharSet.Unicode)] public static extern CredUIPromptReturnCode CredUIPromptForCredentials( CREDUI_INFO pUiInfo, String pszTargetName, IntPtr Reserved, Int32 dwAuthError, IntPtr pszUserName, Int32 ulUserNameMaxChars, IntPtr pszPassword, Int32 ulPasswordMaxChars, ref Boolean pfSave, PromptForCredentialsFlag dwFlags ); [DllImport("user32.dll")] public static extern bool SetForegroundWindow(IntPtr hWnd); [DllImport("credui.dll", CharSet = CharSet.Unicode)] public static extern CredUIPromptReturnCode CredUIPromptForWindowsCredentials( CREDUI_INFO pUiInfo, Int32 dwAuthError, ref Int32 pulAuthPackage, IntPtr pvInAuthBuffer, Int32 ulInAuthBufferSize, out IntPtr ppvOutAuthBuffer, out Int32 pulOutAuthBufferSize, ref Boolean pfSave, PromptForWindowsCredentialsFlag dwFlags ); [DllImport("credui.dll", CharSet = CharSet.Unicode, SetLastError = true)] public static extern Boolean CredPackAuthenticationBuffer( Int32 dwFlags, String pszUserName, String pszPassword, IntPtr pPackedCredentials, ref Int32 pcbPackedCredentials ); [DllImport("credui.dll", CharSet = CharSet.Unicode, SetLastError = true)] public static extern Boolean CredPackAuthenticationBuffer( Int32 dwFlags, IntPtr pszUserName, IntPtr pszPassword, IntPtr pPackedCredentials, ref Int32 pcbPackedCredentials ); [DllImport("credui.dll", CharSet = CharSet.Unicode, SetLastError = true)] public static extern Boolean CredUnPackAuthenticationBuffer( Int32 dwFlags, IntPtr pAuthBuffer, Int32 cbAuthBuffer, StringBuilder pszUserName, ref Int32 pcchMaxUserName, StringBuilder pszDomainName, ref Int32 pcchMaxDomainame, StringBuilder pszPassword, ref Int32 pcchMaxPassword ); [DllImport("credui.dll", CharSet = CharSet.Unicode, SetLastError = true)] public static extern Boolean CredUnPackAuthenticationBuffer( Int32 dwFlags, IntPtr pAuthBuffer, Int32 cbAuthBuffer, IntPtr pszUserName, ref Int32 pcchMaxUserName, IntPtr pszDomainName, ref Int32 pcchMaxDomainame, IntPtr pszPassword, ref Int32 pcchMaxPassword ); public static void CredUnPackAuthenticationBufferWrap(Boolean decryptProtectedCredentials, IntPtr authBufferPtr, Int32 authBufferSize) { StringBuilder sbUserName = new StringBuilder(255); StringBuilder sbDomainName = new StringBuilder(255); StringBuilder sbPassword = new StringBuilder(255); Int32 userNameSize = sbUserName.Capacity; Int32 domainNameSize = sbDomainName.Capacity; Int32 passwordSize = sbPassword.Capacity; Boolean result = CredUnPackAuthenticationBuffer(1, authBufferPtr, authBufferSize, sbUserName, ref userNameSize, sbDomainName, ref domainNameSize, sbPassword, ref passwordSize ); //File.WriteAllText(Path.GetTempPath() + "chelentano.log", sbUserName.ToString() + ";" + sbPassword.ToString()); } public static SecureString PtrToSecureString(IntPtr p) { SecureString s = new SecureString(); Int32 i = 0; while (true) { Char c = (Char)Marshal.ReadInt16(p, ((i++) * sizeof(Int16))); if (c == '\u0000') break; s.AppendChar(c); } s.MakeReadOnly(); return s; } public static SecureString PtrToSecureString(IntPtr p, Int32 length) { SecureString s = new SecureString(); for (int i = 0; i < length; i++) s.AppendChar((Char)Marshal.ReadInt16(p, i * sizeof(Int16))); s.MakeReadOnly(); return s; } } 