[英]How to download the SSL certificate from a website using PowerShell?
I want to download the SSL certificate from, say https://www.outlook.com , using PowerShell. 我想使用PowerShell从https://www.outlook.com下载SSL证书。 Is it possible?
可能吗? Could someone help me?
有人能帮助我吗?
To share more knowledge :-) 分享更多知识:-)
$webRequest = [Net.WebRequest]::Create("https://www.outlook.com")
try { $webRequest.GetResponse() } catch {}
$cert = $webRequest.ServicePoint.Certificate
$bytes = $cert.Export([Security.Cryptography.X509Certificates.X509ContentType]::Cert)
set-content -value $bytes -encoding byte -path "$pwd\Outlook.Com.cer"
My co-worker Michael J. Lyons shared this with me. 我的同事Michael J. Lyons和我分享了这个。
You should be able to get the public key by using the ServicePoint
property on the HttpWebRequest
object. 您应该能够通过使用
HttpWebRequest
对象上的ServicePoint
属性来获取公钥。 This necessary information will be populated once we have made a http request to the site in question. 一旦我们向相关网站发出http请求,就会填充这些必要的信息。
If the request is made to a site which has an untrusted certificate the GetResponse method will throw an exception, However, the ServicePoint
will still contain the Certificate
so we want to ensure we ignore WebException
if the status is a trust failure. 如果请求发送到具有不受信任证书的站点,则GetResponse方法将引发异常,但是,
ServicePoint
仍将包含Certificate
因此我们希望确保在状态为信任失败时忽略WebException
。
So something like the following should work: 所以类似下面这样的东西应该有效:
function Get-PublicKey
{
[OutputType([byte[]])]
PARAM (
[Uri]$Uri
)
if (-Not ($uri.Scheme -eq "https"))
{
Write-Error "You can only get keys for https addresses"
return
}
$request = [System.Net.HttpWebRequest]::Create($uri)
try
{
#Make the request but ignore (dispose it) the response, since we only care about the service point
$request.GetResponse().Dispose()
}
catch [System.Net.WebException]
{
if ($_.Exception.Status -eq [System.Net.WebExceptionStatus]::TrustFailure)
{
#We ignore trust failures, since we only want the certificate, and the service point is still populated at this point
}
else
{
#Let other exceptions bubble up, or write-error the exception and return from this method
throw
}
}
#The ServicePoint object should now contain the Certificate for the site.
$servicePoint = $request.ServicePoint
$key = $servicePoint.Certificate.GetPublicKey()
Write-Output $key
}
Get-PublicKey -Uri "https://www.bing.com"
Get-PublicKey -Uri "https://www.facebook.com"
If you want to call the method many times and some might have the same address, you might want to improve the function by using the ServicePointManager.FindServicePoint(System.Uri)
method, since it will return a cached version if a request has already been made to that site. 如果要多次调用该方法,并且某些方法可能具有相同的地址,则可能需要使用
ServicePointManager.FindServicePoint(System.Uri)
方法来改进该函数,因为如果请求已经过,它将返回缓存版本制作到该网站。 So you could check if the service point has been populated with information. 因此,您可以检查服务点是否已填充信息。 If it hasn't, make the web request.
如果没有,请发出Web请求。 If it has, just use the already existing information, saving yourself an http request.
如果有,只需使用已有的信息,为自己保存一个http请求。
From http://poshcode.org/2521 : 来自http://poshcode.org/2521 :
function Get-WebsiteCertificate {
[CmdletBinding()]
param (
[Parameter(Mandatory=$true)] [System.Uri]
$Uri,
[Parameter()] [System.IO.FileInfo]
$OutputFile,
[Parameter()] [Switch]
$UseSystemProxy,
[Parameter()] [Switch]
$UseDefaultCredentials,
[Parameter()] [Switch]
$TrustAllCertificates
)
try {
$request = [System.Net.WebRequest]::Create($Uri)
if ($UseSystemProxy) {
$request.Proxy = [System.Net.WebRequest]::DefaultWebProxy
}
if ($UseSystemProxy -and $UseDefaultCredentials) {
$request.Proxy.Credentials = [System.Net.CredentialCache]::DefaultNetworkCredentials
}
if ($TrustAllCertificates) {
# Create a compilation environment
$Provider=New-Object Microsoft.CSharp.CSharpCodeProvider
$Compiler=$Provider.CreateCompiler()
$Params=New-Object System.CodeDom.Compiler.CompilerParameters
$Params.GenerateExecutable=$False
$Params.GenerateInMemory=$True
$Params.IncludeDebugInformation=$False
$Params.ReferencedAssemblies.Add("System.DLL") > $null
$TASource=@'
namespace Local.ToolkitExtensions.Net.CertificatePolicy {
public class TrustAll : System.Net.ICertificatePolicy {
public TrustAll() {
}
public bool CheckValidationResult(System.Net.ServicePoint sp,
System.Security.Cryptography.X509Certificates.X509Certificate cert,
System.Net.WebRequest req, int problem) {
return true;
}
}
}
'@
$TAResults=$Provider.CompileAssemblyFromSource($Params,$TASource)
$TAAssembly=$TAResults.CompiledAssembly
## We now create an instance of the TrustAll and attach it to the ServicePointManager
$TrustAll=$TAAssembly.CreateInstance("Local.ToolkitExtensions.Net.CertificatePolicy.TrustAll")
[System.Net.ServicePointManager]::CertificatePolicy=$TrustAll
}
$response = $request.GetResponse()
$servicePoint = $request.ServicePoint
$certificate = $servicePoint.Certificate
if ($OutputFile) {
$certBytes = $certificate.Export(
[System.Security.Cryptography.X509Certificates.X509ContentType]::Cert
)
[System.IO.File]::WriteAllBytes( $OutputFile, $certBytes )
$OutputFile.Refresh()
return $OutputFile
} else {
return $certificate
}
} catch {
Write-Error "Failed to get website certificate. The error was '$_'."
return $null
}
<#
.SYNOPSIS
Retrieves the certificate used by a website.
.DESCRIPTION
Retrieves the certificate used by a website. Returns either an object or file.
.PARAMETER Uri
The URL of the website. This should start with https.
.PARAMETER OutputFile
Specifies what file to save the certificate as.
.PARAMETER UseSystemProxy
Whether or not to use the system proxy settings.
.PARAMETER UseDefaultCredentials
Whether or not to use the system logon credentials for the proxy.
.PARAMETER TrustAllCertificates
Ignore certificate errors for certificates that are expired, have a mismatched common name or are self signed.
.EXAMPLE
PS C:\> Get-WebsiteCertificate "https://www.gmail.com" -UseSystemProxy -UseDefaultCredentials -TrustAllCertificates -OutputFile C:\gmail.cer
.INPUTS
Does not accept pipeline input.
.OUTPUTS
System.Security.Cryptography.X509Certificates.X509Certificate, System.IO.FileInfo
#>
}
function Import-Certificate {
<#
.SYNOPSIS
Imports certificate in specified certificate store.
.DESCRIPTION
Imports certificate in specified certificate store.
.PARAMETER CertFile
The certificate file to be imported.
.PARAMETER StoreNames
The certificate store(s) in which the certificate should be imported.
.PARAMETER LocalMachine
Using the local machine certificate store to import the certificate
.PARAMETER CurrentUser
Using the current user certificate store to import the certificate
.PARAMETER CertPassword
The password which may be used to protect the certificate file
.EXAMPLE
PS C:\> Import-Certificate C:\Temp\myCert.cer
Imports certificate file myCert.cer into the current users personal store
.EXAMPLE
PS C:\> Import-Certificate -CertFile C:\Temp\myCert.cer -StoreNames my
Imports certificate file myCert.cer into the current users personal store
.EXAMPLE
PS C:\> Import-Certificate -Cert $certificate -StoreNames my -StoreType LocalMachine
Imports the certificate stored in $certificate into the local machines personal store
.EXAMPLE
PS C:\> Import-Certificate -Cert $certificate -SN my -ST Machine
Imports the certificate stored in $certificate into the local machines personal store using alias names
.EXAMPLE
PS C:\> ls cert:\currentUser\TrustedPublisher | Import-Certificate -ST Machine -SN TrustedPublisher
Copies the certificates found in current users TrustedPublishers store to local machines TrustedPublisher using alias
.INPUTS
System.String|System.Security.Cryptography.X509Certificates.X509Certificate2, System.String, System.String
.OUTPUTS
NA
.NOTES
NAME: Import-Certificate
AUTHOR: Patrick Sczepanksi (Original anti121)
VERSION: 20110502
#Requires -Version 2.0
.LINK
http://poshcode.org/2643
http://poshcode.org/1937 (Link to original script)
#>
[CmdletBinding()]
param
(
[Parameter(ValueFromPipeline=$true,Mandatory=$true, Position=0, ParameterSetName="CertFile")]
[System.IO.FileInfo]
$CertFile,
[Parameter(ValueFromPipeline=$true,Mandatory=$true, Position=0, ParameterSetName="Cert")]
[System.Security.Cryptography.X509Certificates.X509Certificate2]
$Cert,
[Parameter(Position=1)]
[Alias("SN")]
[string[]] $StoreNames = "My",
[Parameter(Position=2)]
[Alias("Type","ST")]
[ValidateSet("LocalMachine","Machine","CurrentUser","User")]
[string]$StoreType = "CurrentUser",
[Parameter(Position=3)]
[Alias("Password","PW")]
[string] $CertPassword
)
begin
{
[void][System.Reflection.Assembly]::LoadWithPartialName("System.Security")
}
process
{
switch ($pscmdlet.ParameterSetName) {
"CertFile" {
try {
$Cert = New-Object System.Security.Cryptography.X509Certificates.X509Certificate2 $($CertFile.FullName),$CertPassword
}
catch {
Write-Error ("Error reading '$CertFile': $_ .") -ErrorAction:Continue
}
}
"Cert" {
}
default {
Write-Error "Missing parameter:`nYou need to specify either a certificate or a certificate file name."
}
}
switch -regex ($storeType) {
"Machine$" { $StoreScope = "LocalMachine" }
"User$" { $StoreScope = "CurrentUser" }
}
if ( $Cert ) {
$StoreNames | ForEach-Object {
$StoreName = $_
Write-Verbose " [Import-Certificate] :: $($Cert.Subject) ($($Cert.Thumbprint))"
Write-Verbose " [Import-Certificate] :: Import into cert:\$StoreScope\$StoreName"
if (Test-Path "cert:\$StoreScope\$StoreName") {
try
{
$store = New-Object System.Security.Cryptography.X509Certificates.X509Store $StoreName, $StoreScope
$store.Open([System.Security.Cryptography.X509Certificates.OpenFlags]::ReadWrite)
$store.Add($Cert)
if ( $CertFile ) {
Write-Verbose " [Import-Certificate] :: Successfully added '$CertFile' to 'cert:\$StoreScope\$StoreName'."
} else {
Write-Verbose " [Import-Certificate] :: Successfully added '$($Cert.Subject) ($($Cert.Thumbprint))' to 'cert:\$StoreScope\$StoreName'."
}
}
catch
{
Write-Error ("Error adding '$($Cert.Subject) ($($Cert.Thumbprint))' to 'cert:\$StoreScope\$StoreName': $_ .") -ErrorAction:Continue
}
if ( $store ) {
$store.Close()
}
}
else {
Write-Warning "Certificate store '$StoreName' does not exist. Skipping..."
}
}
} else {
Write-Warning "No certificates found."
}
}
end {
Write-Host "Finished importing certificates."
}
}
I successfully used these functions like this: 我成功地使用了这样的函数:
##Import self-signed certificate
Get-WebsiteCertificate $baseUrl local.cer -trust | Out-Null
Import-Certificate -certfile local.cer -SN Root | Out-Null
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