Keyvault Authentication using username and password - azure

Question

The customer has created a key vault and store the credentials . To authenticate key vault , I have created the application in the node and using client id and client secret , I am able to read the secrets. But now the customer wants not to use the client id and client secret , instead use the username and password of the AZURE to access the keyvault in the program. Its one dedicated user for the keyvault access with no MFA.
I am not sure if we can access the keyvault with username and password from the node js. Kindly suggest.
Thanks

Answer 1

For this requirement, I also think that use username-password flow is unnecessary and client credential flow should be better (as juunas mentioned in comments). But if the customer still want to use username-password flow to implement, I can provide a sample as below for your reference:
1. You should register an app in AD with native platform but not web platform.
And please check if "Treat application as a public client" is enabled.
If your app is web platform, when you run the node js code it will show error message to ask you provide "client secret" even if you use username-password flow.
2. You need to add the azure key vault permission to your app.
And do not forget grant admin consent for it.
3. Then you can refer to the code below to get the secret value.
const KeyVault = require('azure-keyvault');
const { AuthenticationContext } = require('adal-node');
const clientId = '<clientId>';
const username = '<username>';
const password = '<password>';
var secretAuthenticator = function (challenge, callback) {
var context = new AuthenticationContext(challenge.authorization);
return context.acquireTokenWithUsernamePassword(challenge.resource, username, password, clientId, function(
err,
tokenResponse,
) {
if (err) throw err;
var authorizationValue = tokenResponse.tokenType + ' ' + tokenResponse.accessToken;
return callback(null, authorizationValue);
});
};
var credentials = new KeyVault.KeyVaultCredentials(secretAuthenticator);
var client = new KeyVault.KeyVaultClient(credentials);
client.getSecret("https://<keyvaultname>.vault.azure.net/", "<secret name>", "<secret version>", function (err, result) {
if (err) throw err;
console.log("secret value is: " + result.value);
});