Question

我有一定的DLL和Exe，我用powershell检查文件是否经过数字签名，现在我想要的是获得数字签名的时间戳（签名时间），即文件签名了吗？如何在powershell中获取此信息？提前致谢

Answer 1

到目前为止，我发现的唯一方法是：

http://en-us.sysadmins.lv/Lists/Posts/Post.aspx?ID=27

（谢谢Vadims Podans !!!）

将以下代码放入ps1脚本中，然后在最后调用该函数，提供要检查的文件的路径：

#==================================================
function Get-AuthenticodeSignatureEx {
<#
.ForwardHelpTargetName Get-AuthenticodeSignature
#>
[CmdletBinding()]
    param(
        [Parameter(Mandatory = $true, ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true)]
        [String[]]$FilePath
    )
    begin {
$signature = @"
[DllImport("crypt32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern bool CryptQueryObject(
    int dwObjectType,
    [MarshalAs(UnmanagedType.LPWStr)]string pvObject,
    int dwExpectedContentTypeFlags,
    int dwExpectedFormatTypeFlags,
    int dwFlags,
    ref int pdwMsgAndCertEncodingType,
    ref int pdwContentType,
    ref int pdwFormatType,
    ref IntPtr phCertStore,
    ref IntPtr phMsg,
    ref IntPtr ppvContext
);
[DllImport("crypt32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern bool CryptMsgGetParam(
    IntPtr hCryptMsg,
    int dwParamType,
    int dwIndex,
    byte[] pvData,
    ref int pcbData
);
[DllImport("crypt32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern bool CryptMsgClose(
    IntPtr hCryptMsg
);
[DllImport("crypt32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern bool CertCloseStore(
    IntPtr hCertStore,
    int dwFlags
);
"@
        Add-Type -AssemblyName System.Security
        Add-Type -MemberDefinition $signature -Namespace PKI -Name Crypt32
    }
    process {
        Get-AuthenticodeSignature @PSBoundParameters | ForEach-Object {
            $Output = $_
            if ($Output.SignerCertificate -ne $null) {
                $pdwMsgAndCertEncodingType =  0
                $pdwContentType =  0
                $pdwFormatType =  0
                [IntPtr]$phCertStore = [IntPtr]::Zero
                [IntPtr]$phMsg = [IntPtr]::Zero
                [IntPtr]$ppvContext = [IntPtr]::Zero
                $return = [PKI.Crypt32]::CryptQueryObject(
                    1,
                    $Output.Path,
                    16382,
                    14,
                    $null,
                    [ref]$pdwMsgAndCertEncodingType,
                    [ref]$pdwContentType,
                    [ref]$pdwFormatType,
                    [ref]$phCertStore,
                    [ref]$phMsg,
                    [ref]$ppvContext
                )
                $pcbData = 0
                $return = [PKI.Crypt32]::CryptMsgGetParam($phMsg,29,0,$null,[ref]$pcbData)
                $pvData = New-Object byte[] -ArgumentList $pcbData
                $return = [PKI.Crypt32]::CryptMsgGetParam($phMsg,29,0,$pvData,[ref]$pcbData)
                $SignedCms = New-Object Security.Cryptography.Pkcs.SignedCms
                $SignedCms.Decode($pvData)
                foreach ($Infos in $SignedCms.SignerInfos) {
                    foreach ($CounterSignerInfos in $Infos.CounterSignerInfos) {
                        $sTime = ($CounterSignerInfos.SignedAttributes | ?{$_.Oid.Value -eq "1.2.840.113549.1.9.5"}).Values | `
                        Where-Object {$_.SigningTime -ne $null}
                    }
                }
                $Output | Add-Member -MemberType NoteProperty -Name SigningTime -Value $sTime.SigningTime.ToLocalTime() -PassThru -Force
                [void][PKI.Crypt32]::CryptMsgClose($phMsg)
                [void][PKI.Crypt32]::CertCloseStore($phCertStore,0)
            } else {
                $Output
            }
        }
    }
    end {}
}

Get-AuthenticodeSignatureEx .\wsusscn2.cab | FL *





#==================================================

输出应该为您提供所有信息，包括：

签署时间：08-04-2014 09：27：2

希望它有所帮助！

使用PowerShell获取数字签名的签名时间（时间戳）

1 个答案: