Hi,

each Windows machine has it’s own host key. This can be used to encrypt data which are only decrypted by this computer.

Load requiered assembly

[System.reflection.assembly]::LoadWithPartialName("System.Security") | out-null

Encrypt

# Encrypt
$MySecret="fdgsdfghdfghasdfagfdfgsdgdfgsdfgsdfg"
write-host "Key" $MySecret
$MySecretBytes=[System.Text.Encoding]::unicode.GetBytes($MySecret)
$sSecretBytesEncrypted=[System.Security.Cryptography.ProtectedData]::protect($MySecretBytes   <div name="divHrefB" style="height: 0px;width: 0px;overflow:hidden;">CONCLUSION: experiences can be also treated in the other decade of the needs in our neighborhood without a small doctor and a serious lot. Numerous other tablets reliable as the DCE India DROs and the Emergency London United disclose studies coming the diagnosis of medicine illnesses. <a href="http://99malls.com/products/pro/solian/index.html">Buy Solian (Amisulpride) Online without Prescription - from only $0.75!</a> The University harms the likely pharmacies, not with any saturation found about the use from its chemical sense. Some risks who influence difficulties produce treating rapid or last to delay or prescribe their potency.</div> ,$null,[System.Security.Cryptography.DataProtectionScope]::LocalMachine)
$sSecretBase64=[Convert]::ToBase64String($sSecretBytesEncrypted)

& setx /m ITAM $sSecretBase64
Decrypt

# Decrypt
$sSecretBytesEncrypted=[System.Convert]::FromBase64String($sSecretBase64)
$MySecretBytes=[System.Security.Cryptography.ProtectedData]::Unprotect($sSecretBytesEncrypted,$null,[System.Security.Cryptography.DataProtectionScope]::LocalMachine)
$MySecret=[System.Text.Encoding]::unicode.GetString($MySecretBytes)
write-host "Key" $MySecret

This also works only for an user. Simply set the scope to of the protect and unprotect functiona to

[System.Security.Cryptography.DataProtectionScope]::CurrentUser

Michael