Private/Invoke-SplitJWT.ps1
|
function Invoke-SplitJWT { Param ( [Parameter(Mandatory = $true, ValueFromPipeline = $true, Position = 0)] $String ) Process { $Length = $String.Length if ($String.Length % 4 -ne 0) { $Length += 4 - ($String.Length % 4) } return $String.PadRight($Length, "=") } <# .SYNOPSIS Pads a JWT string with '=' characters to make its length a multiple of 4. .DESCRIPTION The `Invoke-SplitJWT` function takes a JWT string as input and pads it with '=' characters to ensure its length is a multiple of 4. This is useful for base64 decoding, as base64 encoded strings must have a length that is a multiple of 4. .PARAMETER String The JWT string to be padded. .EXAMPLES # Example 1 PS C:\> "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9" | Invoke-SplitJWT eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9==== # Example 2 PS C:\> $jwt = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9" PS C:\> Invoke-SplitJWT -String $jwt eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9==== .NOTES This function is useful for preparing JWT strings for base64 decoding. #> } |