This post shows how to configure a require strong password in ASP.NET Identity using C#.NET.
Open your IdentityConfig.cs class
manager.PasswordValidator = new PasswordValidator
{
RequiredLength = 6, // Minimum length of the password
RequireNonLetterOrDigit = true, // Must include a special character
RequireDigit = true, // Must include a number
RequireLowercase = true, // Must include a lowercase character
RequireUppercase = true // Must include an uppercase character
};
Use the PasswordValidator properties to define your own password validation policy.