PowerShell Password Encription.

I log in to windows 2008R2 as user A and I execute the below powershell script

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$credential = Get-Credential
$credential.Password | ConvertFrom-SecureString | Set-Content e:\ow.txt

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This generates encrypted password in e:\ow.txt. This password encrypted string i can use any powershell program using below line.

$password = Get-Content e:\ow.txt  | ConvertTo-SecureString -AsPlainText -Force

Question: This secure string only works when i log in as user A. If I log in asuser B it wouldn't work. Is there any mechanism where this secure string should work with any user ?

Thanks in advance.