I am trying to enable HTTPS traffic for my API service (using Dropwizard Java). However, I need to provide a keystore containing the SSL certificate for the Dropwizard configuration:
server:
applicationConnectors:
- type: https
port: 8443
keyStorePath: example.keystore
keyStorePassword: example
validateCerts: false
I have my .pfx certificate in a Key Vault in Azure, so I was wondering how I can also store a .jks keystore file in an Azure Key Vault?
I could alternatively just transfer the .jks keystore file directly to the virtual machine, but I am not sure if this would be very secure. How can I upload .jks files into Microsoft Azure Vault?
You can store a .jks (or any file) as a keyvault Secret if you base64 encode it and the total size is less then 25kb.
For example from the cli:
OUTPUT="$(base64 -w0 < test.txt)" & az keyvault secret set --name mysecret --vault-name myvault --value $OUTPUT
When retrieving the secret you can decode it and write the output to file.
Related
I have some .cer certificates (only public key) in my classic cloud service. I don't quite understand how am I supposed to migrate those to extended support.
.pfx certificates, I can pre-upload to Key Vault before executing New-AzCloudService with command az keyvault certificate import. That command does not work with .cer (it expects private key inside certificate).
If I don't upload the certificate, New-AzCloudService understandably fails because it can't find the certificate mentioned in .cscfg.
I have created an Azure App Service Certificate - Wildcard and have linked it to an Azure Key Vault, also done with Domain Verification. Now I want to export this certificate as PFX and use in other components.
However, If I go to the Key Vault secret it shows up as blank.
I have tried running powershell scripts to export/download the cert but doesn't work.
The powershell script to export the cert from Key Vault is taken from https://azure.github.io/AppService/2017/02/24/Creating-a-local-PFX-copy-of-App-Service-Certificate.html
As this used the retired AzureRM module, I found a more up to date code which uses Azure Powershell scripts # https://raw.githubusercontent.com/Anitalex/poshscripts/a7e6c8153ab9f9979792eb8c07497cd42e39778d/azure/ExportWebAppCertificate.ps1
But similar set of steps..
I have tried Re-Keying the certificate in the App Service Certificate and the problem persists ?
Argh...
Here is the solution which doesn't seem to be documented anywhere..
I don't know if it's the only way, but looks like it - We have to
Create an Azure WebApp ( or an AppService)
Turn on TLS/SSL
Set an Identity - either System Assigned/User Assigned
Grant this Identity required permission to the KeyVault [ won't work with the Azure role-based access control (preview) ]
Go to the tab "Private Key Certificates (.pfx)"
Use the "Import App Service Certificate" - you will need to select your cert from the dropdowns.
Once the certificate is successfully imported, the pfx will be populated in the Key Vault certificate and now you can download.
Is there any limitation in importing pkcs12 into Azure key vault, basically I need to import a root CA cert, intermediate CA cert and a leaf cert and its private key in a single file. Is this possible with Azure key vault?
In Azure KeyVault, certificates can be imported in either PFX or PEM format, so the formats you mentioned won't work unless you convert them to PEM or PFX.
Here are some instructions for how to do that.
See more information about importing KeyVault certificates here.
I have found plenty of guides on how to set up Lets Encrypt for Azure Windows Web App Services, but I can't find any at all for Linux based services.
Here are two example of such tutorials (that require windows).
https://www.hanselman.com/blog/SecuringAnAzureAppServiceWebsiteUnderSSLInMinutesWithLetsEncrypt.aspx
https://www.youtube.com/watch?v=C6V_mBo-gnE
In the tutorials above, and all other tutorials I have found you need to use Web App Extensions to do the actual updating of the cert every 3 months. But these are not available on Linux apps.
This is all you see in the Azure portal when you try to navigate to it.
So, does anyone have any links, or helpful tips on how to set up automated Let's encrypt certificates for Azure Linux Services?
I'm sure people would want Lets Encrypt for Linux apps as well?
You could set up a Let's Encrypt SSL Cert for Azure Web App with Linux in 5 steps.
Install Certbot client
Create Let's Encrypt Cert with Certbot (Manually)
Convert PEM to PFX for Azure using OpenSSL
openssl pkcs12 -inkey /work-dir-path/live/website.com/privkey.pem -in /work-dir-path/live/website.com/cert.pem -export -out /work-dir-path/live/website.com/cert.pfx
Upload PFX cert to Azure Portal with Azure CLI method
az webapp config hostname add --webapp-name $webappname --resource-group $resourceGroup \ --hostname $fqdn
thumbprint=$(az webapp config ssl upload --certificate-file $pfxPath \ --certificate-password $pfxPassword --name $webappname --resource-group $resourceGroup \ --query thumbprint --output tsv)
Bind uploaded SSL certificate to your webapp Portal with Azure CLI method
az webapp config ssl bind --certificate-thumbprint $thumbprint --ssl-type SNI \ --name $webappname --resource-group $resourceGroup
Alternatively, Azure lets you create a free certificate and add it your App Service app at the click of a couple buttons. It's issued by DigiCert, managed by App Service, and renewed automatically. See Azure docs.
I found a very good solution to this issue recently. You can use the let's encrypt web app renewer to install and renew your certificates for the Linux Web Apps.
Create a free app plan for windows
Create a web app for windows
Follow the instructions on the Github page - set it up to renew the linux web app certs (as many as you want)
Schedule a job to hit the webook or use a azure function or any other option to trigger the job every 3 months.
There are a few tricks to getting it working correctly with .net core on linux especially if you are using spa services. I had to set the letsencrypt:webAppName-webRootPath configuretion to d:\home\site\wwwroot\wwwroot because of the spa static files.
Done!
I'm looking for a code sample which demonstrates how to connect to an azure key vault and grab a secret from the vault without having to store creds in plain text but instead using certificates and an SPN for authentication to the vault. Has anyone done anything like this before who is willing to shed some light on this?
I'm trying to securely retrieve credentials from azure without ever having to save creds locally, and this has proven to be harder than I originally thought.
yes you can use certificate based authentication while accessing Azure key vault.
Here is a very good article on the same using dot net.
Certificate base authentication
Alternatively Azure Key Vault provides a way to securely store credentials and other keys and secrets, but your code needs to authenticate to Key Vault to retrieve them. Managed Service Identity (MSI) makes solving this problem simpler by giving Azure services an automatically managed identity in Azure Active Directory (Azure AD). You can use this identity to authenticate to any service that supports Azure AD authentication, including Key Vault, without having any credentials in your code.
Run the assign-identity command to create the identity for this application:
az webapp identity assign --name <app_name> --resource-group "<YourResourceGroupName>"
This command is the equivalent of going to the portal and switching Managed service identity to On in the web application properties.
Assign permissions to your application to read secrets from Key Vault
{
"principalId": "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
"tenantId": "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
"type": "SystemAssigned"
}
Then, run this command using the name of your Key Vault and the value of PrincipalId copied from above:
az keyvault set-policy --name '<YourKeyVaultName>' --object-id <PrincipalId> --secret-permissions get
Deploy the Node App to Azure and retrieve the secret value
Deploy your node js app ,After this when you browse https://.azurewebsites.net you can see the secret value. Make sure that you replaced the name with your vault name