How to convert string to Base64 and vice versa using Powershell

River Yang

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Feb 24, 2017 · 1 min read

Working with Consul without UI is the correct way to go, which also help you with the productivity!!! (True?, hahaha~~)

Anyway, I’m not allowed to have a UI for it, come down to have read the correct value and make sure it’s the one we want it to be in there, I need to do heaps “Get” to get the value, however the value is encoded with Base64…

Here is the way to decode it:

$response = Invoke-RestMethod -Method Get -Uri "http://localhost:8500/v1/kv/hello"
$b  = [System.Convert]::FromBase64String($($response.Value))
[System.Text.Encoding]::UTF8.GetString($b)
Hello World

To encode it:

$b  = [System.Text.Encoding]::UTF8.GetBytes("Hello World")
[System.Convert]::ToBase64String($b)
SGVsbG8gV29ybGQ=

Have fun~