Mongo db sha1到sha256

Question

我想将我的身份验证从sha-1转移到sha 256，然而，即使我创建了一个散列器，我也得到了一个错误，指出它无法使用sha1进行身份验证。代码中没有对这个旧机制的引用，我已经在我的mongo DB中创建了一个sha256用户。这意味着它以某种方式被默认为旧版本。查看代码，我得到警告，说明MongoClientSettings已过时，但浏览web时，我没有看到替代方案，除非我打算使用连接字符串。mongo客户端的文档仍然接受构造函数中的mongoClientSettings吗？我使用的是MongoDB版本4.10和mongocsharpdriver 2.10

public static MongoClientSettings PrepareMongoSettings(string dbName)
    {
        MongoClientSettings mongoSettings = new MongoClientSettings();
        mongoSettings.Server = new MongoServerAddress(Host, Port);
        mongoSettings.ConnectionMode = 0;
        if (!string.IsNullOrWhiteSpace(MongoUsername))
        {
            List<MongoCredential> mongoCredentials = new List<MongoCredential>();
            MongoCredential mongoCred = MongoCredential.CreateCredential("admin", MongoUsername, MongoPassword);
            mongoCredentials.Add(mongoCred);
            mongoSettings.Credentials = mongoCredentials;
        }

        return mongoSettings;
    }

我已经创建的哈希器是相当基本的，密码应该是哈希之前，这段代码它是输入到数据库。

public static class HasherSha256
{
    public static byte[] GetPasswordHash(string username, string password)
    {
        // get salted byte[] buffer, containing username, password and some (constant) salt
        byte[] buffer;
        using (System.IO.MemoryStream stream = new MemoryStream())
        using (System.IO.StreamWriter writer = new StreamWriter(stream))
        {
            writer.Write("MyDB");
            writer.Write(username);
            writer.Write(password);
            writer.Flush();

            buffer = stream.ToArray();
        }
        return ComputeSha256Hash(buffer);
    }

    static byte[] ComputeSha256Hash(byte[] rawData)
    {
        using (SHA256 sHA256 = SHA256.Create())
        {
            return sHA256.ComputeHash(rawData);

        }

    }
}

}

Answer 1

我没有看到任何文档说MongoClientSettings已经过时了。这是连接到MongoDB的一个非常有用的功能。See Documentation here。Credentials已弃用，但被只接受一个凭据的Credential所取代。不是数组。

new MongoClientSettings()
{
    ConnectionMode = ConnectionMode.ReplicaSet,
    Credential = MongoCredential.CreateCredential("admin", Username, Password),
    ReplicaSetName = "ReplicaSetName",
    Servers =  new List<MongoServerAddress>(){new MongoServerAddress("server", 27017), new MongoServerAddress("server2", 27017)}.ToArray(),
    ApplicationName = "AppName",
}