Public/Helpers/New-JWT.ps1
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function New-JWT { [CmdletBinding()] Param ( [Parameter(Mandatory = $true)] [string]$Audience, [Parameter(Mandatory = $true)] [string]$Issuer, [Parameter(Mandatory = $true)] [string]$Subject, [Parameter(Mandatory = $true)] [int]$ExpirationMinutes, [Parameter(Mandatory = $true)] [string]$SigningKey ) $header = @{ alg = "HS256" typ = "JWT" } $payload = @{ aud = $Audience iss = $Issuer iat = [math]::Floor([System.DateTimeOffset]::Now.ToUnixTimeSeconds()) nbf = [math]::Floor([System.DateTimeOffset]::Now.ToUnixTimeSeconds()) exp = [math]::Floor(([System.DateTimeOffset]::Now.AddMinutes($ExpirationMinutes)).ToUnixTimeSeconds()) sub = $Subject } $headerJson = $header | ConvertTo-Json -Compress $payloadJson = $payload | ConvertTo-Json -Compress $headerBase64 = [System.Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes($headerJson)) $payloadBase64 = [System.Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes($payloadJson)) $signature = [System.Convert]::ToBase64String([System.Security.Cryptography.HMACSHA256]::new([System.Text.Encoding]::UTF8.GetBytes($SigningKey)).ComputeHash([System.Text.Encoding]::UTF8.GetBytes("$headerBase64.$payloadBase64"))) $jwt = "$headerBase64.$payloadBase64.$signature" return $jwt } |