function Invoke-DecryptWithCert{
    param(
        [parameter(mandatory=$True,Position=0)]
        $CipherText,
        [System.Security.Cryptography.X509Certificates.X509Certificate]$Certificate
    )

    if(!$Certificate){
        $Certificate = Get-ChildItem Cert:\CurrentUser\My
        if($Certificate.Count -gt 1){ Write-Error -Message "Multiple Certificates detected. Please pass one as a parameter"}
    }elseif($Certificate.GetType().BaseType.Name -ne "X509Certificate"){
        Write-Error -Category InvalidArgument -Message "Certificate not valid"
        Return $Null
    }
    $type = $CipherText.GetType().Name
    if($type -ne "String"){
        Write-Error -Category InvalidArgument -Message "Input must be a string"
    }
    $EncryptedBytes = [System.Convert]::FromBase64String($CipherText)
    $DecryptedBytes = $Certificate.PrivateKey.Decrypt($EncryptedBytes, $true)
    $DecryptedTXT = [system.text.encoding]::UTF8.GetString($DecryptedBytes)
    Return $DecryptedTXT
}

function Invoke-EncryptWithCert{
    param(
        [parameter(mandatory=$True,Position=0)]
        $Input,
        [System.Security.Cryptography.X509Certificates.X509Certificate]$Certificate
    )

    if(!$Certificate){
        $Certificate = Get-ChildItem Cert:\CurrentUser\My
        if($Certificate.Count -gt 1){ Write-Error -Message "Multiple Certificates detected. Please pass one as a parameter"}
    }elseif($Certificate.GetType().BaseType.Name -ne "X509Certificate"){
        Write-Error -Category InvalidArgument -Message "Certificate not valid"
        Return $Null
    }

    if($Input.GetType().Name -eq "PSCredential"){
        $EncodedTXT = [System.Text.Encoding]::UTF8.GetBytes($Input.GetNetworkCredential().Password)
    }elseif($Input.GetType().Name -eq "String"){
        $EncodedTXT = [System.Text.Encoding]::UTF8.GetBytes($Input)
    }else{
        Write-Error -Category InvalidArgument -Message "Input must be either credential or a String type"
        Return $Null
    }

    $EncryptedBytes = $Certificate.PublicKey.Key.Encrypt($EncodedTXT, $true)
    $EncryptedTXT = [System.Convert]::ToBase64String($EncryptedBytes)
    Return $EncryptedTXT
}