根据这个答案保护EntityFramework核心应用程序使用的SQLite数据库

EF Core使用Microsoft.Data.Sqlite，目前不支持
加密开箱即用。请参阅
https://github.com/aspnet/Microsoft.Data .Sqlite /问题/ 184 。您可以
自己使用SQLite扩展添加加密。

在GitHub链接中，提供了其他链接， / p>

加密Microsoft.Data.Sqlite

I use SQLite with Entity Framework.

I create the DB with following code:

class MyContext : DbContext
{   
    // DbSets, OnModelCreating(), etc.

    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
    {
        optionsBuilder.UseSqlite("Data Source=c:\\test.db");
    }
}

//this is in my test method
 using (var db = new MyContext())
{
    db.Database.EnsureCreated();
}

The above code works. The DB gets created. But I want to encrypt the DB by providing password in connection string:

optionsBuilder.UseSqlite("Data Source=c:\\test.db;Password=mypassword");

In this case, after EnsureCreated is called, I get exception

An unhandled exception of type 'System.ArgumentException' occurred in System.Data.dll Additional information: Keyword not supported: 'password'.

What is wrong with using password? How can I encrypt that SQLite database?

According to this answer Protect SQLite database used by EntityFramework Core Application

EF Core uses Microsoft.Data.Sqlite, which does not currently support encryption out-of-box. See https://github.com/aspnet/Microsoft.Data.Sqlite/issues/184. You could add encryption yourself using SQLite extensions.

At the GitHub link provided there were other links to an alternative at

Encryption in Microsoft.Data.Sqlite