Private/ConvertFrom-EncryptedBase64.ps1
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function ConvertFrom-EncryptedBase64 { [cmdletbinding()] param ( [string]$B64String ) [System.Reflection.Assembly]::LoadWithPartialName("System.Security") | Out-Null try { $content = [Convert]::FromBase64String($B64String) $envelopedCms = New-Object Security.Cryptography.Pkcs.EnvelopedCms $certCollection = New-Object System.Security.Cryptography.X509Certificates.X509Certificate2Collection $envelopedCms.Decode($content) $envelopedCms.Decrypt($certCollection) $utf8content = [text.encoding]::UTF8.getstring($envelopedCms.ContentInfo.Content) return $utf8content } catch [System.Management.Automation.MethodInvocationException] { Write-Warning "You can't decrypt log files generated from a different device.." Write-Warning $_.Exception.Message } } |