Question

有没有人知道如何确定用户的证书何时设置为过期？我知道我可以通过以下代码获取给定用户的所有证书：

Set objUserTemplate = _
    GetObject("LDAP://cn=userTemplate,OU=Management,dc=NA,dc=fabrikam,dc=com")
arrUserCertificates = objUserTemplate.GetEx("userCertificate")

但是，我该如何评估给定证书的到期日期呢？我确实在这里看到了这个java代码：http://forums.novell.com/novell-developer-forums/dev-ldap/364977-q-retrieving-users-public-key-over-ldap.html，

X509Certificate cert = ( X509Certificate )it.next();
java.util.Date expires = cert.getNotAfter();
GregorianCalendar calNow = new GregorianCalendar();
GregorianCalendar calExp = new GregorianCalendar();
calExp.setTime( expires );
//issuerDN = cert.getIssuerDN().getName();
int daysTilExp = com.willeke.utility.DateUtils.daysPast( calExp );
long diffDays = com.willeke.utility.DateUtils.diffDayPeriods( calNow,
calExp );
if( diffDays <= 0 )
{
String mex = " Will expire in: " + diffDays + " days!";

但我不确定我是否可以在VB中使用getNotAfter方法，或者我将如何使用它。有没有人有任何想法？如果可能的话，我想帮助在VBScript / VB.Net / VBA等中进行此查询。

我确实发现这个VBScript code here似乎正在做我想要完成的事情，但看起来相当复杂，因为java代码似乎更简单。有一种更简单的方法可以在VB的某些风格中执行此查询吗？

来自cruto网站：

On Error Resume Next

Const E_ADS_PROPERTY_NOT_FOUND  = &h8000500D
Const ForWriting = 2
Const WshRunning = 0

Set objUser = GetObject _
    ("GC://cn=MyerKen,ou=Management,dc=NA,dc=fabrikam,dc=com")
objUser.GetInfoEx Array("userCertificate"), 0
arrUserCertificates = objUser.GetEx("userCertificate")

If Err.Number = E_ADS_PROPERTY_NOT_FOUND Then
    WScript.Echo "No assigned certificates"
    WScript.Quit
Else
    Set objShell = CreateObject("WScript.Shell")
    Set objFSO = CreateObject("Scripting.FileSystemObject")
    strPath = "." 
    intFileCounter = 0

    For Each arrUserCertificate in arrUserCertificates
        strFileName = "file" & intFileCounter
        strFullName = objFSO.BuildPath(strPath, strFileName)
        Set objFile = objFSO.OpenTextFile(strFullName, ForWriting, True)

        For i = 1 To LenB(arrUserCertificate)
            ReDim Preserve arrUserCertificatesChar(i - 1)
            arrUserCertificatesChar(i-1) = _
                Hex(AscB(MidB(arrUserCertificate, i, 3)))
        Next

        intCounter=0
        For Each HexVal in arrUserCertificatesChar
            intCounter=intCounter + 1
            If Len(HexVal) = 1 Then 
                objFile.Write(0 & HexVal & " ")
            Else
                objFile.Write(HexVal & " ")
            End If
        Next
        objFile.Close
        Set objFile = Nothing

        Set objExecCmd1 = objShell.Exec _
            ("certutil -decodeHex " & strFileName & " " & strFileName & ".cer")
        Do While objExecCmd1.Status = WshRunning
            WScript.Sleep 100
        Loop
        Set objExecCmd1 = Nothing

        Set objExecCmd2 = objShell.Exec("certutil " & strFileName & ".cer")
        Set objStdOut = objExecCmd2.StdOut
        Set objExecCmd2 = Nothing

        WScript.Echo VbCrLf & "Certificate " & intFileCounter + 1
        While Not objStdOut.AtEndOfStream
            strLine = objStdOut.ReadLine
            If InStr(strLine, "Issuer:") Then
                WScript.Echo Trim(strLine)
                WScript.Echo vbTab & Trim(objStdOut.ReadLine)
            End If
            If InStr(strLine, "Subject:") Then
                Wscript.Echo Trim(strLine)
                WScript.Echo vbTab & Trim(objStdOut.ReadLine)
            End If
            If InStr(strLine, "NotAfter:") Then
                strLine = Trim(strLine)
                WScript.Echo "Expires:"
                Wscript.Echo vbTab & Mid(strLine, 11)
            End If
        Wend

        objFSO.DeleteFile(strFullName)
        objFSO.DeleteFile(strPath & "\" & strFileName & ".cer") 

        intFileCounter = intFileCounter + 1
    Next
End If

更新我确实看到我可以import the certificate into the CAPICOM反对返回ValidToDate属性，但显然它存储在AD中的格式是错误的格式，根据此帖子：{{ 3}}

有谁知道CAPICOM导入功能的格式是什么？

Answer 1

Microsoft有一个名为CAPICOM的ActiveX控件，它允许您以编程方式访问证书的各种属性。 MSDN CAPICOM article详细介绍了这些功能。 Platform SDK（从Where to get it链接链接）包括样本，文档和可再发行控件。样本包括VBScript示例。我找到了Platform SDK here的下载。

简而言之，一旦您检索到证书，您就会找到 ValidFromDate 和 ValidToDate 属性。

找出用户证书何时到期

1 个答案: