如何通过 PowerShell 从证书文件中导出根证书和中间签名证书？

Question

使用 PowerShell；我需要一个证书文件 (.cer/.crt)，并将中间和根签名证书文件导出到同一目录。我能做的最多就是获取证书颁发者名称（中间 CA）。我如何利用 PowerShell 确定中间和根签名 CA 并保存这些证书？

$cert = New-Object System.Security.Cryptography.X509Certificates.X509Certificate2 D:\Netscaler_Certificates\example.2021.cer
$cert.IssuerName

给我：

Name                                   Oid                                RawData            
----                                   ---                                -------            
CN=Subordinate CA, DC=domain, DC=com   System.Security.Cryptography.Oid   {48, 99, 49...}

Answer 1

您需要构建证书链，然后导出链元素：

$cert = New-Object System.Security.Cryptography.X509Certificates.X509Certificate2 D:\Netscaler_Certificates\example.2021.cer
$chain = new-object security.cryptography.x509certificates.x509chain
[void]$chain.Build($cert)
$chain.ChainElements | %{
    sc -path .$($_.Certificate.GetNameInfo("dnsName",$false)).cer -value $_.Certificate.RawData -encoding byte
}

Answer 2

...并“托管”您刚刚从上一个答案中导出的证书，下一行可以是：

(($chain.ChainElements.Certificate.Subject | Select-Object -Skip 1) -Replace ", .*").trimstart("CN=")

如何通过 PowerShell 从证书文件中导出根证书和中间签名证书？

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