Public/Azure/Get-WELogAnalyticsSignature.ps1

Function Get-WELogAnalyticsSignature {
    [cmdletbinding()]
    Param (
        $ALWorkspaceID,
        $WorkspacePrimaryKey,
        $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)
    $keyBytes = [Convert]::FromBase64String($WorkspacePrimaryKey)

    $sha256 = New-Object System.Security.Cryptography.HMACSHA256
    $sha256.Key = $keyBytes
    $calculatedHash = $sha256.ComputeHash($bytesToHash)
    $encodedHash = [Convert]::ToBase64String($calculatedHash)
    $authorization = 'SharedKey {0}:{1}' -f $ALWorkspaceID,$encodedHash
    return $authorization
}