使用Live Id从Universal App登录到Web Api

Question

我正在尝试实现以下功能：

1. 用户从Windows Phone 8.1（或Universal）应用程序登录Live Id帐户。
2. App访问我使用ASP.NET Web Api 2开发的Web Api
3. 在此Web Api中，我需要对用户进行身份验证。
4. 稍后，我想在Web应用程序中验证同一用户

这就是我正在做的事情，它不起作用。

在我的Windows Phone应用程序中：

var authClient = new LiveAuthClient("http://myservice.cloudapp.net");
LiveLoginResult result = await authClient.LoginAsync(new string[] { "wl.signin" });

if (result.Status == LiveConnectSessionStatus.Connected)
{
    connected = true;
    var identity = await ConnectToApi(result.Session.AuthenticationToken);
    Debug.WriteLine(identity);
}

然后

private async Task<string> ConnectToApi(string token)
{
    using (var client = new HttpClient())
    {
        client.BaseAddress = new Uri("http://myservice.cloudapp.net/");
        client.DefaultRequestHeaders.Accept.Clear();
        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
        client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);

        // HTTP GET
        HttpResponseMessage response = await client.GetAsync("api/values");
        if (response.IsSuccessStatusCode)
        {
            string result = await response.Content.ReadAsStringAsync();
            return result;
        }
        else
            return response.ReasonPhrase;
    }
}

然后在我的网络API中我有以下内容

public void ConfigureAuth(IAppBuilder app)
{

    app.UseMicrosoftAccountAuthentication(
        clientId: "my client id",
        clientSecret: "my secret");

}

我将http://myservice.cloudapp.net注册为重定向网址。

问题是身份验证不起作用，web api操作无法识别用户。

Answer 1

我完全错了。首先，我实际上需要使用app.UseJwtBearerAuthentication方法。这个例子在这里找到http://code.lawrab.com/2014/01/securing-webapi-with-live-id.html。但是当我尝试时，我在输出中出现了这个错误

IDX10500: Signature validation failed. Unable to resolve SecurityKeyIdentifier: 'SecurityKeyIdentifier
    (
    IsReadOnly = False,
    Count = 1,
    Clause[0] = System.IdentityModel.Tokens.NamedKeySecurityKeyIdentifierClause
    )

这个花了我一段时间来弄清楚，直到我发现这篇文章：JwtSecurityTokenHandler 4.0.0 Breaking Changes?

把这些东西放在一起，我得到的解决方案现在似乎在我的测试环境中工作：

public void ConfigureAuth(IAppBuilder app)
    {
        var sha256 = new SHA256Managed();
        var sKey = "<Secret key>" + "JWTSig";
        var secretBytes = new UTF8Encoding(true, true).GetBytes(sKey);
        var signingKey = sha256.ComputeHash(secretBytes);
        var securityKeyProvider = new SymmetricKeyIssuerSecurityTokenProvider("urn:windows:liveid", signingKey);
        var securityKey = securityKeyProvider.SecurityTokens.First().SecurityKeys.First();

        var jwtOptions = new JwtBearerAuthenticationOptions()
        {
            //AllowedAudiences = new[] { "<url>" },
            //IssuerSecurityTokenProviders = new[] 
            //{ 
            //  new SymmetricKeyIssuerSecurityTokenProvider("urn:windows:liveid",signingKey)
            //},
            TokenValidationParameters = new System.IdentityModel.Tokens.TokenValidationParameters()
            {
                IssuerSigningKeyResolver = (token, securityToken, keyIdentifier, validationParameters) =>
                    {
                        return securityKey;
                    },
                ValidAudience = "<url>",
                ValidIssuer = securityKeyProvider.Issuer
            }

        };
        app.UseJwtBearerAuthentication(jwtOptions);

    }