powershell - Powershell 中的 Azure API SharedKeyLite

Question

我正在尝试在 powershell 中实现 SharedKeyLite 授权 header 函数。这是为了连接到 Azure 表 REST API。我错过了一些东西，因为我不断收到错误:

Server failed to authenticate the request. Make sure the value of Authorization header is formed correctly including the signature.

   function GenerateHeader($accountName, $accountKey, $action)
{
    $xmsdate = get-date
    $xmsdate = $xmsdate.ToUniversalTime()
    $xmsdate = $xmsdate.toString('r')
    $newLine = "`n";
    $message = $xmsdate + $newline + "/" + $accountname + "/" + $action;
    $hmacsha = New-Object System.Security.Cryptography.HMACSHA256
    $hmacsha.key = [Convert]::FromBase64String($accesskey)
    $signature = $hmacsha.ComputeHash([Text.Encoding]::UTF8.GetBytes($message))
    $signature = [Convert]::ToBase64String($signature)
    $headers = New-Object "System.Collections.Generic.Dictionary[[String],[String]]"
    $headers.Add("x-ms-version", "2014-02-14")
    $headers.Add("x-ms-date", $xmsdate)
    $headers.Add("Authorization", "SharedKeyLite " + $accountName + ":" + $signature)

    return $headers
}

更新:这是调用该函数的代码。 $action 变量设置为 URI 字符串。

$uriString = "https://$StorageAccountName.table.core.windows.net/Tables"

$headers = GenerateHeader $StorageAccountName $StorageAccountKey "Tables"

Invoke-RestMethod -Uri $uriString -Method $method -Headers $headers -Body $body

这是它抛出的错误。

Invoke-RestMethod : AuthenticationFailedServer failed to authenticate the request. Make sure the value of Authorization header is formed correctly including the signature. RequestId:4215377d-0002-0044-1a92-94cd56000000 Time:2015-05-22T13:21:53.5205261Z At C:\Users\Samuel\Source\BaseDataInstall\BaseDataInstall\AzureHelpers.ps1:45 char:2 + Invoke-RestMethod -Uri $uriString -Method $method -Headers $headers -Body $body + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-RestMethod], WebExc eption + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeRestMethodCommand

编辑:这是函数外部 $headers 变量的示例输出...

Key   : x-ms-version
Value : 2014-02-14

Key   : x-ms-date
Value : Tue, 26 May 2015 19:30:20 GMT

Key   : Authorization
Value : SharedKeyLite <MyStorageName>:lf+ndqhi4OeJhIfLljugT0dfcLbqXDBHwrQJn9Q66HQ=

Answer 1

所以这最终是一个简单的编码错误:(

我觉得现在发布这个有点傻，但我要发布一个答案，因为我在 Powershell 中找不到任何可用的 Azure 授权构建器。这确实适用于 Azure 表...

function GenerateHeader($accountName, $accountKey, $action)
{
    $xmsdate = get-date
    $xmsdate = $xmsdate.ToUniversalTime()
    $xmsdate = $xmsdate.toString('R')
    $newLine = "`n";
    $action = $action.ToLower()
    $message = $xmsdate + $newline + "/" + $accountname + "/" + $action;
    $hmacsha = New-Object System.Security.Cryptography.HMACSHA256
    $hmacsha.key = [Convert]::FromBase64String($accountKey)
    $signature = $hmacsha.ComputeHash([Text.Encoding]::UTF8.GetBytes($message))
    $signature = [Convert]::ToBase64String($signature)
    $headers = New-Object "System.Collections.Generic.Dictionary[[String],[String]]"
    $headers.Add("Content-Type", "application/json")
    $headers.Add("x-ms-date", $xmsdate)
    $headers.Add("Authorization", "SharedKeyLite " + $accountName + ":" + $signature)

    return $headers
}