Details

This adds authentication with JWT bearer token

builder.Services.AddAuthentication(options =>
{
    options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
    options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
})
    .AddJwtBearer(options =>
    {
        options.TokenValidationParameters = new TokenValidationParameters
        {
            ValidateIssuer = true,
            ValidateAudience = true,
            ValidateLifetime = true,
            ValidateIssuerSigningKey = true,
            ValidIssuer = builder.Configuration.GetValue<string>("Jwt:Issuer"),
            ValidAudience = builder.Configuration.GetValue<string>("Jwt:Audience"),
            IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(
                builder.Configuration.GetValue<string>("Jwt:Key")))
        };
    });

Configuration settings are gotten from appsettings.json