如何在asp.net core2中正確配置JWT？

Question

我正在嘗試在我的api應用程序中應用基於JSON Web令牌的身份驗證。 問題是每次測試令牌時都會得到無效的令牌簽名。 此外，我無法在我的控制器中獲得我的請求的授權，我認為這可能與生成后者有關。

我發布了所有相關代碼，如果有人可以幫助我，將不勝感激。 源代碼源自github ASPNETCore2JwtAuthentication

appsettings.json

 "BearerTokens": {
  "Key": "iNivDmHLpUA223sqsfhqGbMRdRj1PVkH",
  "Issuer": "http://localhost/",
  "Audience": "http://localhost/",
  "AccessTokenExpirationMinutes": 2,
  "RefreshTokenExpirationMinutes": 60
},

Startup.cs / ConfigureServices

            services.AddAuthorization(options =>
                    {
                        options.AddPolicy(CustomRoles.Admin, policy => policy.RequireRole(CustomRoles.Admin));
                        options.AddPolicy(CustomRoles.User, policy => policy.RequireRole(CustomRoles.User));
                        options.AddPolicy(CustomRoles.Editor, policy => policy.RequireRole(CustomRoles.Editor));
                    });


            services.AddAuthentication(options =>
                {
                    options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
                    options.DefaultSignInScheme = JwtBearerDefaults.AuthenticationScheme;
                    options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
                })
                .AddCookie(cfg => 
                { 
                    cfg.SlidingExpiration = true; 
                })
                .AddJwtBearer(cfg =>
                {
                    cfg.RequireHttpsMetadata = false;
                    cfg.SaveToken = true;
                    cfg.TokenValidationParameters = new TokenValidationParameters
                    {
                        ValidIssuer = Configuration["BearerTokens:Issuer"],
                        ValidAudience = Configuration["BearerTokens:Audience"],
                        IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(Configuration["BearerTokens:Key"])),
                        ValidateIssuerSigningKey = true,
                        ValidateLifetime = true,
                        ClockSkew = TimeSpan.Zero
                    };
                    cfg.Events = new JwtBearerEvents
                    {
                        OnAuthenticationFailed = context =>
                        {
                            var logger = context.HttpContext.RequestServices.GetRequiredService<ILoggerFactory>().CreateLogger(nameof(JwtBearerEvents));
                            logger.LogError("Authentication failed.", context.Exception);
                            return Task.CompletedTask;
                        },
                        OnTokenValidated = context =>
                        {
                            var tokenValidatorService = context.HttpContext.RequestServices.GetRequiredService<ITokenValidatorService>();
                            return tokenValidatorService.ValidateAsync(context);
                        },
                        OnMessageReceived = context =>
                         {
                             return Task.CompletedTask;
                         },
                        OnChallenge = context =>
                        {
                            var logger = context.HttpContext.RequestServices.GetRequiredService<ILoggerFactory>().CreateLogger(nameof(JwtBearerEvents));
                            logger.LogError("OnChallenge error", context.Error, context.ErrorDescription);
                            return Task.CompletedTask;
                        }
                    };
                });


            services.AddCors(options =>
            {
                options.AddPolicy("CorsPolicy",
                    builder => builder
                        .WithOrigins("http://localhost:4200") //Note:  The URL must be specified without a trailing slash (/).
                        .AllowAnyMethod()
                        .AllowAnyHeader()
                        .AllowCredentials());
            });
            services.AddMvc();



**Startup.cs** / Configure


app.UseAuthentication();
app.UseMvc();

TokenStoreService.cs

public async Task<(string accessToken, string refreshToken)> CreateJwtTokens(ApplicationUser user)
{
    var now = DateTimeOffset.UtcNow;
    var accessTokenExpiresDateTime = now.AddMinutes(_configuration.Value.AccessTokenExpirationMinutes);
    var refreshTokenExpiresDateTime = now.AddMinutes(_configuration.Value.RefreshTokenExpirationMinutes);
    var accessToken = await createAccessTokenAsync(user, accessTokenExpiresDateTime.UtcDateTime).ConfigureAwait(false);
    var refreshToken = Guid.NewGuid().ToString().Replace("-", "");

    await AddUserTokenAsync(user, refreshToken, accessToken, refreshTokenExpiresDateTime, accessTokenExpiresDateTime).ConfigureAwait(false); // this method is only to store the generated token in the database, irrelevent to the issue.
    await this.context.SaveChangesAsync();


    return (accessToken, refreshToken);
}

 private async Task<string> createAccessTokenAsync(ApplicationUser user, DateTime expires)
        {
            var claims = new List<Claim>
            {
                // Unique Id for all Jwt tokes
                new Claim(JwtRegisteredClaimNames.Jti, Guid.NewGuid().ToString()),
                // Issuer
                new Claim(JwtRegisteredClaimNames.Iss, _configuration.Value.Issuer),
                // Issued at
                new Claim(JwtRegisteredClaimNames.Iat, DateTime.UtcNow.ToUnixEpochDate().ToString(), ClaimValueTypes.Integer64),
                new Claim(ClaimTypes.NameIdentifier, user.Id.ToString()),
                new Claim(ClaimTypes.Name, user.UserName),
                new Claim("DisplayName", user.LastName),
                // to invalidate the cookie
                new Claim(ClaimTypes.SerialNumber, user.SecurityStamp),
                // custom data
                new Claim(ClaimTypes.UserData, user.Id.ToString())
            };

            // add roles
            var roles = await _rolesService.FindUserRolesAsync(user.Id).ConfigureAwait(false);
            foreach (var role in roles)
            {
                claims.Add(new Claim(ClaimTypes.Role, role.RoleId));
            }

            var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(_configuration.Value.Key));
            var creds = new SigningCredentials(key, SecurityAlgorithms.HmacSha256);
            var token = new JwtSecurityToken(
                issuer: _configuration.Value.Issuer,
                audience: _configuration.Value.Audience,
                claims: claims,
                notBefore: DateTime.UtcNow,
                expires: expires,
                signingCredentials: creds);

            return new JwtSecurityTokenHandler().WriteToken(token);
        }

生成令牌的樣本

eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..q-IphSwiOhzDT9upOO4XOvGQVp_NxymcuW4WWuERe2U

驗證鏈接

Answer 1

所以我的問題是我的ITokenValidatorService的錯誤，這是您用來驗證自己的令牌的自定義方式。

 OnTokenValidated = context =>
                        {
                            var tokenValidatorService = context.HttpContext.RequestServices.GetRequiredService<ITokenValidatorService>();
                            return tokenValidatorService.ValidateAsync(context);
                        },

上面顯示的配置工作正常

但是我仍然想知道為什么JWT 驗證程序不斷返回任何提交的令牌為無效令牌！