A Guide to Base64 Encoding and Decoding in PowerShell

Base64 encoding and decoding is a commonly used technique in various scenarios, such as securely transmitting and storing binary data. In PowerShell, performing Base64 encoding and decoding is straightforward and can be accomplished using built-in methods. In this article, we will explore how to encode and decode data using PowerShell, showcasing the simplicity and power of these operations.

Encoding Data with Base64:
To encode data in Base64 using PowerShell, follow these steps:

Step 1: Define the text you want to encode:

$Text = 'This is a secret and should be hidden'

Step 2: Convert the text to bytes using the Unicode encoding:

$Bytes = [System.Text.Encoding]::Unicode.GetBytes($Text)

Step 3: Perform the Base64 encoding:

$EncodedText = [Convert]::ToBase64String($Bytes)

The result is the Base64 encoded text:

VABoAGkAcwAgAGkAcwAgAGEAIABzAGUAYwByAGUAdAAgAGEAbgBkACAAcwBoAG8AdQBsAGQAIABiAGUAIABoAGkAZABlAG4A

Decoding Base64 Data:
To decode Base64 encoded data using PowerShell, follow these steps:

Step 1: Define the Base64 encoded text:

$EncodedText = 'VABoAGkAcwAgAGkAcwAgAGEAIABzAGUAYwByAGUAdAAgAGEAbgBkACAAcwBoAG8AdQBsAGQAIABiAGUAIABoAGkAZABlAG4A'

Step 2: Perform the Base64 decoding and convert the bytes back to text:

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

The result is the decoded text:

This is a secret and should be hidden

Base64 encoding and decoding in PowerShell is a simple and powerful way to handle binary data. In this article, we explored how to encode and decode data using PowerShell, showcasing the step-by-step process and providing practical examples. Understanding these techniques equips you with a valuable skill for handling Base64 encoded data in various scenarios, such as securely transmitting sensitive information or working with binary data. Experiment with Base64 encoding and decoding in your PowerShell scripts and explore the possibilities it offers in your daily tasks.