pChecksAD

0.0.4

Public/Azure/Get-LogAnalyticsSignature.ps1

                                Function Get-LogAnalyticsSignature {

    [cmdletbinding()]

    Param (

        $customerId,

        $sharedKey,

        $date,

        $contentLength,

        $method,

        $contentType,

        $resource

    )

    $xHeaders = "x-ms-date:" + $date

    $stringToHash = $method + "`n" + $contentLength + "`n" + $contentType + "`n" + $xHeaders + "`n" + $resource

    $bytesToHash = [Text.Encoding]::UTF8.GetBytes($stringToHash)

    $keyBytes = [Convert]::FromBase64String($sharedKey)

    $sha256 = New-Object System.Security.Cryptography.HMACSHA256

    $sha256.Key = $keyBytes

    $calculatedHash = $sha256.ComputeHash($bytesToHash)

    $encodedHash = [Convert]::ToBase64String($calculatedHash)

    $authorization = 'SharedKey {0}:{1}' -f $customerId,$encodedHash

    return $authorization

}