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I want to secure azure function using Authorization level


I want to secure azure function using Authorization level

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I want to secure azure function using Authorization level
Tag : chash , By : shenol
Date : September 12 2020, 02:00 PM

seems to work fine Functions lets you use keys to make it harder to access your HTTP function endpoints during development.
To secure an endpoint in production you need to use authentication + Authorization using the options:

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How to safely call Azure Function with function level authorization in Xamarin mobile app?


Tag : azure , By : mobi phil
Date : March 29 2020, 07:55 AM
Hope this helps Just to make sure I understand, your concern is about embedding secrets (the ?code=XXX value) in your iOS/Android app, correct? If so, yes, this is generally considered bad security practice. It's best to assume that anyone who can download your app will have the ability to discover these secrets and use them any way they want.
The recommended way to authenticate with a backend service, such as Azure Functions, from a mobile device is to use interactive authentication - i.e. some kind of OAuth flow. You can build it yourself, or you can use the built-in functionality of Azure Functions and Azure App Service to help you (Azure Functions is built on top of App Service). Here is a resource which might be useful:

Function level authorization authorization keys in azure which mechnisam it is using?


Tag : azure , By : Vlad Sirenko
Date : March 29 2020, 07:55 AM
I wish this help you It is simple keys. You pass a key as query parameter on each request. You don't obtain some temporal tokens like you would on oauth.
https://docs.microsoft.com/en-us/azure/azure-functions/functions-bindings-http-webhook#authorization-keys

Function Level Authorization Authorize keys in Azure can we manage these keys through CICD


Tag : azure , By : lamberms
Date : March 29 2020, 07:55 AM
this one helps. everything is being managed through rest api (ultimately) so this ask makes very little sense. you can manage those only using the rest calls (as far as I know).
function Add-AzureFunctionKey {

    Param(
        [string]$appName,
        [string]$resourceGroup,
        [string]$funcKeyName,
        [string]$funcKeyValue
    )

    $AzureContext = Get-AzureRmContext
    if(!$AzureContext){
        Write-Output "Please login to your Azure Account"
        Login-AzureRmAccount
    }
    $SubscriptionId = (Get-AzureRmSubscription | select Name, State, SubscriptionId, TenantId | Out-GridView -Title "Azure Subscription Selector" -PassThru).SubscriptionId
    Get-AzureRmSubscription -SubscriptionId $SubscriptionId | Select-AzureRmSubscription

    $PublishingProfile = (Get-AzureRmWebAppPublishingProfile -ResourceGroupName $resourceGroup -Name $appName)

    $user = (Select-Xml -Xml $PublishingProfile -XPath "//publishData/publishProfile[contains(@profileName,'Web Deploy')]/@userName").Node.Value
    $pass = (Select-Xml -Xml $PublishingProfile -XPath "//publishData/publishProfile[contains(@profileName,'Web Deploy')]/@userPWD").Node.Value

    $pair = "$($user):$($pass)"
    $kuduCredentials = [System.Convert]::ToBase64String([System.Text.Encoding]::ASCII.GetBytes($pair))

    $authToken = Invoke-RestMethod -Uri "https://$appName.scm.azurewebsites.net/api/functions/admin/token" -Headers @{Authorization = ("Basic {0}" -f $kuduCredentials)} -Method GET

    $Functions = Invoke-RestMethod -Method GET -Headers @{Authorization = ("Bearer {0}" -f $authToken)} -Uri "https://$appName.azurewebsites.net/admin/functions"
    $Functions = $Functions.Name
    ForEach ($functionName in $Functions) {
        $data = @{ 
            "name"  = "$funcKeyName"
            "value" = "$funcKeyValue"
        }
        $json = $data | ConvertTo-Json;

        $keys = Invoke-RestMethod -Method PUT -Headers @{Authorization = ("Bearer {0}" -f $authToken)} -ContentType "application/json" -Uri "https://$appName.azurewebsites.net/admin/functions/$functionName/keys/$funcKeyName" -body $json
        Write-Output "Function $FunctionName Key updated $keys"
    }
}

Retrieve keys from Authorization keys function level authorization in Azure using C#


Tag : chash , By : Mark W
Date : March 29 2020, 07:55 AM
This might help you I need to get the keys through code, not through a portal. For doing this I have found REST API in Google. This is the link to Azure Key management API, but do this we need to do an authentication. , Regarding the issue, please refer to the following code.
 #install Microsoft.Azure.Management.ResourceManager.Fluent and Microsoft.Azure.Management.Fluent    
string clientId = "client id";
     string secret = "secret key";
     string tenant = "tenant id";
     var functionName ="functionName";
     var webFunctionAppName = "functionApp name";
     string resourceGroup = "resource group name";
     var credentials = new AzureCredentials(new ServicePrincipalLoginInformation { ClientId = clientId, ClientSecret = secret}, tenant, AzureEnvironment.AzureGlobalCloud);
     var azure = Azure
              .Configure()
              .Authenticate(credentials)
              .WithDefaultSubscription();

     var webFunctionApp = azure.AppServices.FunctionApps.GetByResourceGroup(resourceGroup, webFunctionAppName);
     var ftpUsername = webFunctionApp.GetPublishingProfile().FtpUsername;
     var username = ftpUsername.Split('\\').ToList()[1];
     var password = webFunctionApp.GetPublishingProfile().FtpPassword;
     var base64Auth = Convert.ToBase64String(Encoding.Default.GetBytes($"{username}:{password}"));
     var apiUrl = new Uri($"https://{webFunctionAppName}.scm.azurewebsites.net/api");
     var siteUrl = new Uri($"https://{webFunctionAppName}.azurewebsites.net");
     string JWT;
     using (var client = new HttpClient())
      {
         client.DefaultRequestHeaders.Add("Authorization", $"Basic {base64Auth}");

         var result = client.GetAsync($"{apiUrl}/functions/admin/token").Result;
         JWT = result.Content.ReadAsStringAsync().Result.Trim('"'); //get  JWT for call funtion key
       }
     using (var client = new HttpClient())
     {
        client.DefaultRequestHeaders.Add("Authorization", "Bearer " + JWT);
        var key = client.GetAsync($"{siteUrl}/admin/functions/{functionName}/keys").Result.Content.ReadAsStringAsync().Result;
      }

Correct authorization strategy using Azure AD to secure a CLI to REST API


Tag : development , By : Shawazi
Date : March 29 2020, 07:55 AM
around this issue Use the Application Roles.
Here you will find good description what application roles are and how to handle them:
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