在x64上从.NET调用CryptUIWizDigitalSign

我试图使用CryptUIWizDigitalSign函数对编译到AnyCPU的.net2.0应用程序中的文件进行数字签名。该调用在x86上运行时工作正常,但在x64上失败,在x64操作系统上编译为x86时也可以工作。有什么更好的马歇尔或从x64打电话吗?

返回的Win32exception是“在对文件进行数字签名时遇到错误…”,本机错误代码为-2146762749。

准则的相关部分包括:

[StructLayout(LayoutKind.Sequential)]
 public struct CRYPTUI_WIZ_DIGITAL_SIGN_INFO {
 public Int32 dwSize;
 public Int32 dwSubjectChoice;
 [MarshalAs(UnmanagedType.LPWStr)]
 public string pwszFileName;
 public Int32 dwSigningCertChoice;
 public IntPtr pSigningCertContext;
 [MarshalAs(UnmanagedType.LPWStr)]
 public string pwszTimestampURL;
 public Int32 dwAdditionalCertChoice;
 public IntPtr pSignExtInfo;
}

[DllImport("Cryptui.dll", CharSet=CharSet.Unicode, SetLastError=true)]
public static extern bool CryptUIWizDigitalSign(int dwFlags, IntPtr hwndParent, string pwszWizardTitle, ref CRYPTUI_WIZ_DIGITAL_SIGN_INFO pDigitalSignInfo, ref IntPtr ppSignContext);

CRYPTUI_WIZ_DIGITAL_SIGN_INFO digitalSignInfo = new CRYPTUI_WIZ_DIGITAL_SIGN_INFO();
digitalSignInfo = new CRYPTUI_WIZ_DIGITAL_SIGN_INFO();
digitalSignInfo.dwSize = Marshal.SizeOf(digitalSignInfo);
digitalSignInfo.dwSubjectChoice = 1;
digitalSignInfo.dwSigningCertChoice = 1;
digitalSignInfo.pSigningCertContext = pSigningCertContext;
digitalSignInfo.pwszTimestampURL = timestampUrl;
digitalSignInfo.dwAdditionalCertChoice = 0;
digitalSignInfo.pSignExtInfo = IntPtr.Zero;
digitalSignInfo.pwszFileName = filepath;
CryptUIWizDigitalSign(1, IntPtr.Zero, null, ref digitalSignInfo, ref pSignContext));

下面是如何检索SigningCertContext(减去各种错误处理)

public IntPtr GetCertContext(String pfxfilename, String pswd)
 IntPtr hMemStore = IntPtr.Zero;
 IntPtr hCertCntxt = IntPtr.Zero;
 IntPtr pProvInfo = IntPtr.Zero;
 uint provinfosize = 0;
 try {                
  byte[] pfxdata = PfxUtility.GetFileBytes(pfxfilename);
  CRYPT_DATA_BLOB ppfx = new CRYPT_DATA_BLOB();
  ppfx.cbData = pfxdata.Length;
  ppfx.pbData = Marshal.AllocHGlobal(pfxdata.Length);
  Marshal.Copy(pfxdata, 0, ppfx.pbData, pfxdata.Length);
  hMemStore = Win32.PFXImportCertStore(ref ppfx, pswd, CRYPT_USER_KEYSET);
  pswd = null;
  if (hMemStore != IntPtr.Zero) {
   Marshal.FreeHGlobal(ppfx.pbData);
   while ((hCertCntxt = Win32.CertEnumCertificatesInStore(hMemStore, hCertCntxt)) != IntPtr.Zero) {
    if (Win32.CertGetCertificateContextProperty(hCertCntxt, CERT_KEY_PROV_INFO_PROP_ID, IntPtr.Zero, ref provinfosize))
     pProvInfo = Marshal.AllocHGlobal((int)provinfosize);
    else
     continue;
    if (Win32.CertGetCertificateContextProperty(hCertCntxt, CERT_KEY_PROV_INFO_PROP_ID, pProvInfo, ref provinfosize))
     break;
   }               
  }
finally {
 if (pProvInfo != IntPtr.Zero)
  Marshal.FreeHGlobal(pProvInfo);
 if (hMemStore != IntPtr.Zero)
  Win32.CertCloseStore(hMemStore, 0);
}
 return hCertCntxt;
}