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Create an unnamed CNG key through typed native helper

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Shirofune-Security committed 2026-09-21 17:53:39 +09:00
1 parent 718ef8c91d
commit 7184918f66
3 files changed
+10 -5
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scripts/Capi2ProbeWorker.ps1
+1 -4
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@@ -8,10 +8,7 @@ Initialize-WelaCapi2ProbeNative
$before=[Wela.WmiProbe.Native]::Snapshot()
$key=$null;$rsa=$null;$certificate=$null
try {
$parameters=[Security.Cryptography.CngKeyCreationParameters]::new()
$parameters.Provider=[Security.Cryptography.CngProvider]::MicrosoftSoftwareKeyStorageProvider
$parameters.Parameters.Add([Security.Cryptography.CngProperty]::new('Length',[BitConverter]::GetBytes([int]2048),[Security.Cryptography.CngPropertyOptions]::None))
$key=[Security.Cryptography.CngKey]::Create([Security.Cryptography.CngAlgorithm]::Rsa,$null,$parameters)
$key=[Wela.Capi2Probe.Native]::CreateEphemeralRsa()
if(-not $key.IsEphemeral -or $key.KeyName){throw 'The generated CNG key is not ephemeral.'}
$rsa=[Security.Cryptography.RSACng]::new($key)
$request=[Security.Cryptography.X509Certificates.CertificateRequest]::new(('CN=WelaCapi2Probe_'+$Nonce),$rsa,[Security.Cryptography.HashAlgorithmName]::SHA256,[Security.Cryptography.RSASignaturePadding]::Pkcs1)