How to get all secrets in one call Azure key vault

Question

I am using sample code explain here

https://github.com/Azure-Samples/app-service-msi-keyvault-dotnet

but they only explained how can we get single secrete not list of secrete.

so to get all secrete I'm using this code sample

var all = kv.GetSecretsAsync(url).GetAwaiter().GetResult();
foreach (var secret in all)
{
    secretlist.Add(secret.Id);
}

but it is only getting the secret id, not value. I want to get all secrets value also so can anyone help how I can do this?

Answer 1

Looking at the documentation, the KeyVaultClient Class doesn't contain a method to get all secrets including their values. The GetSecrets method 'List secrets in a specified key vault.' and returns a list with items of type SecretItem, which doesn't contain the value but only contains secret metadata.

This is in line with the Key Vault REST API, where there's a GetSecrets that returns... you guessed it... a list of SecretItems.

Long story short: if you want all values of all secrets, you have to iterate the list and get every one explicitly.

Answer 2

You have to get all secrets, returning an IPage of SecretItem, and then iterate through each one to get the SecretBundle like this. Here's my code that handles the operation:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Azure.KeyVault;
using Microsoft.IdentityModel.Clients.ActiveDirectory;
using Newtonsoft.Json;

namespace TradingReplay.Engine
{
    public class SecurityCredentials : Serialisable<SecurityCredentials, SecurityCredentials>
    {
        public string VaultUrl { get; set; }
        public string ApplicationId {get; set;}
        private string ApplicationSecret { get; set; }
        internal Dictionary<string, string> Cache { get; set; } = new Dictionary<string, string>();

        public SecurityCredentials()
        { }

        public SecurityCredentials(string vaultUrl, string applicationId, string applicationSecret)
        {
            VaultUrl = vaultUrl;
            ApplicationId = applicationId;
            ApplicationSecret = applicationSecret;
        }

        public async Task<SecurityCredentials> InitialiseAzure()
        {
            var client = new KeyVaultClient(new KeyVaultClient.AuthenticationCallback(GetAccessTokenAsync), new HttpClient());
            var secrets = await client.GetSecretsAsync(VaultUrl);

            foreach (var item in secrets)
                Cache.Add(item.Identifier.Name, await GetSecretAsync(client, item.Identifier.Name));

            return this;
        }

        public async Task<string> GetSecretAsync(string key)
        {
            if (Cache.TryGetValue(key, out var value))
                return value;
            else
            {
                var client = new KeyVaultClient(new KeyVaultClient.AuthenticationCallback(GetAccessTokenAsync), new HttpClient());
                var secret = await GetSecretAsync(client, key);
                Cache.Add(key, secret);
                return secret;
            }
        }

        public async Task<string> GetSecretAsync(KeyVaultClient client, string key)
        {
            var secret = await client.GetSecretAsync(VaultUrl, key);
            return secret.Value;
        }

        private async Task<string> GetAccessTokenAsync(string authority, string resource, string scope)
        {
            var appCredentials = new ClientCredential(ApplicationId, ApplicationSecret);
            var context = new AuthenticationContext(authority, TokenCache.DefaultShared);

            var result = await context.AcquireTokenAsync(resource, appCredentials);

            return result.AccessToken;
        }
    }
}

For testing purposes I have registered an application to access my Azure instances, and to initialize the class all I do is:

var credentials = await new SecurityCredentials("<vaultUrl>", "<applicationId>", "<applicationSecret>").InitialiseAzure();

and then can call:

credentials["<secretName>"];

Answer 3

You can use listPropertiesOfSecrets method which returns all keys. This way you can iterate and get all secrets from vault.