PowerShell Encoding & Decoding (Base64)

PowerShell provides an easy method for Base64 encoding and decoding.

Encoding:

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

The result is this base64 encoded text:
VABoAGkAcwAgAGkAcwAgAGEAIABzAGUAYwByAGUAdAAgAGEAbgBkACAAcwBoAG8AdQBsAGQAIABiAGUAIABoAGkAZABlAG4A

Decoding:
Decoding the base64 encoded blob using PowerShell is simple.

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