Functions/ConvertFrom-JWT.ps1
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function ConvertFrom-JWT { [CmdletBinding()] [OutputType([pscustomobject])] param ( [Parameter( Mandatory, ValueFromPipeline, HelpMessage='Enter the JWT you want to convert to human readable text.' )] [ValidatePattern('(^[\w-]*\.[\w-]*\.[\w-]*$)')] [string]$JWT ) begin { } process { $header, $payload, $signature = $JWT.Split('.') -replace '-','+' -replace '_','/' $reversedJWT = [PSCustomObject]@{ 'Header' = ([System.Text.Encoding]::UTF8.GetString([Convert]::FromBase64String($header)) | ConvertFrom-Json) 'Payload' = ([System.Text.Encoding]::UTF8.GetString([Convert]::FromBase64String("$payload==")) | ConvertFrom-Json) } } end { Write-Output -InputObject $reversedJWT } } |