Я пытаюсь использовать CredWrite
, но получите ошибку ERROR_INVALID_PARAMETER 87 (0x57)
. Цель состоит в том, чтобы иметь безопасное место для сохранения пароля пользователя для моего .net-приложения WPF.Кто-нибудь использовал функцию Win32 API CredWrite в .NET?
И мой код:
public class CredMan
{
private const string TARGET_PREFIX = "myappname:";
public static void SavePassword(string username, string password)
{
Win32CredMan.Credential cred = new Win32CredMan.Credential();
cred.Flags = 0;
cred.Type = Win32CredMan.CRED_TYPE.GENERIC;
cred.TargetName = TARGET_PREFIX + username;
var encoding = new System.Text.UTF8Encoding();
cred.CredentialBlob = encoding.GetBytes(password);
cred.Persist = Win32CredMan.CRED_PERSIST.LOCAL_MACHINE;
cred.UserName = username;
bool isGood = Win32CredMan.CredWrite(cred, 0);
int lastError = Marshal.GetLastWin32Error();
}
}
Это win32 упаковщик: (в основном захватил из pinvoke.net)
internal class Win32CredMan
{
[DllImport("Advapi32.dll", EntryPoint = "CredReadW", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern bool CredRead(string target, CRED_TYPE type, int reservedFlag,
[MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(CredentialInMarshaler))]out Credential credential);
[DllImport("Advapi32.dll", EntryPoint = "CredFreeW", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern void CredFree(IntPtr buffer);
[DllImport("Advapi32.dll", SetLastError = true, EntryPoint = "CredWriteW", CharSet = CharSet.Unicode)]
public static extern bool CredWrite([In] Credential userCredential, [In] UInt32 flags);
public enum CRED_TYPE : uint
{
GENERIC = 1,
DOMAIN_PASSWORD = 2,
DOMAIN_CERTIFICATE = 3,
DOMAIN_VISIBLE_PASSWORD = 4,
GENERIC_CERTIFICATE = 5,
DOMAIN_EXTENDED = 6,
MAXIMUM = 7, // Maximum supported cred type
MAXIMUM_EX = (MAXIMUM + 1000), // Allow new applications to run on old OSes
}
public enum CRED_PERSIST : uint
{
SESSION = 1,
LOCAL_MACHINE = 2,
ENTERPRISE = 3,
}
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
public struct CREDENTIAL_ATTRIBUTE
{
string Keyword;
uint Flags;
uint ValueSize;
IntPtr Value;
}
//This type is deliberately not designed to be marshalled.
public class Credential
{
public UInt32 Flags;
public CRED_TYPE Type;
public string TargetName;
public string Comment;
public System.Runtime.InteropServices.ComTypes.FILETIME LastWritten;
public byte[] CredentialBlob;
public CRED_PERSIST Persist;
public CREDENTIAL_ATTRIBUTE[] Attributes;
public string TargetAlias;
public string UserName;
}
}
Посмотрите здесь .... http://stackoverflow.com/questions/2337672/credwrite-returns-win32-error-code-2-error-invalid-function-incorrect-function/2337753#2337753 – t0mm13b
Просто перечитайте код, и похоже, что класс Credential не сортируется (согласно комментарию) .... duh! :) – mlsteeves
http://blogs.msdn.com/peerchan/pages/487834.aspx - У вас есть полное решение, и оно работает. – mlsteeves