Migrate password hash from ASP.NET Identity 2.0 to 3.0

Question

Currently, I have password hashes generated using ASP.NET Identity 2.0.

Is it possible to verify these passwords using new ASP.NET Identity 3.0?

Answer 1

Try to set PasswordHasherCompatibilityMode to V2(below code was not tested) :

    public void ConfigureServices(IServiceCollection services)
    {
        services.Configure<PasswordHasherOptions>(options => options.CompatibilityMode = PasswordHasherCompatibilityMode.IdentityV2);
    }

also see How to set PasswordHasherCompatibilityMode.IdentityV3 in ASP.NET 5 Identity?