Base64 Encode and Decode string

First, from https://adsecurity.org/?p=478

Encode:

$Text = 'This is a secret and should be hidden'
$Bytes = [System.Text.Encoding]::Unicode.GetBytes($Text)
$EncodedText =[Convert]::ToBase64String($Bytes)
$EncodedText

Decode:

$EncodedText = "VABoAGkAcwAgAGkAcwAgAGEAIABzAGUAYwByAGUAdAAgAGEAbgBkACAAcwBoAG8AdQBsAGQAIABiAGUAIABoAGkAZABlAG4A"
$DecodedText = [System.Text.Encoding]::Unicode.GetString([System.Convert]::FromBase64String($EncodedText))
$DecodedText

And a different format from Lee Holmes (via twitter)

Format-Hex -Input ([Convert]::FromBase64String("VQBzAGUAIABQAG8AdwBlAHIAUwBoAGUAbABsACEA"))

Source

• PowerShell Encoding & Decoding (Base64)
• https://twitter.com/Lee_Holmes/status/743112454616403968