Private/New-MimecastHeader.ps1
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function New-MimecastHeader{ param( [string]$Uri ) $Keys = Get-MimecastAPIKeys $Appinfo = Get-MimecastAppInfo $accessKey = $Keys.AccessKey $secretKey = $Keys.SecretKey $appId = $Appinfo.AppId $appKey = $Appinfo.AppKey #Generate request header values $hdrDate = (Get-Date).ToUniversalTime().ToString("ddd, dd MMM yyyy HH:mm:ss UTC") $requestId = [guid]::NewGuid().guid #Create the HMAC SHA1 of the Base64 decoded secret key for the Authorization header $sha = New-Object System.Security.Cryptography.HMACSHA1 $sha.key = [Convert]::FromBase64String($secretKey) $sig = $sha.ComputeHash([Text.Encoding]::UTF8.GetBytes($hdrDate + ":" + $requestId + ":" + $Uri + ":" + $appKey)) $sig = [Convert]::ToBase64String($sig) #Create Headers $headers = @{ "Authorization" = "MC $($accessKey): $sig" "x-mc-date" = $hdrDate "x-mc-app-id" = $appId "x-mc-req-id" = $requestId "Content-Type" = "application/json" } $headers } |