Jwt 无法有效的发行者或受众答案

【问题标题】：Jwt Unable to valid issuer or audienceJwt 无法有效的发行者或受众
【发布时间】：2019-03-15 06:28:08
【问题描述】：

这是我的令牌解码器。当我尝试对其进行解码时，我的主体最终为空，从而导致此错误：

'IDX10208：无法验证受众。 validationParameters.ValidAudience 为 null 或空格，并且 validationParameters.ValidAudiences 为空。'

当我解码我的令牌进行检查时

“nbf”：1539167980，“exp”：1539168580，“iat”：1539167980，“iss”： "http://localhost:55260", "aud": "http://localhost:55260"

这也是我的令牌生成器运行的主机。为什么委托人会导致问题？

public class DecodeToken
{
    private IConfiguration configuration;
    public DecodeToken(IConfiguration configuration)
    {
        this.configuration = configuration;
    }

    public AuthenticationDto Decode(String Input)
    {
        var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(configuration["JwtAuthentication:SecurityKey"]));
        var handler = new JwtSecurityTokenHandler();
        var tokenSecure = handler.ReadToken(Input) as SecurityToken;
        var validations = new TokenValidationParameters
        {
            ValidateIssuerSigningKey = true,
            IssuerSigningKey = key,
            ValidateIssuer = true,
            ValidateAudience = true,
            ValidateLifetime = false
        };
        SecurityToken securityToken;
        var principal = handler.ValidateToken(Input, validations, out securityToken);
        var jwtSecurityToken = securityToken as JwtSecurityToken;
        if (jwtSecurityToken == null || !jwtSecurityToken.Header.Alg.Equals(SecurityAlgorithms.HmacSha256, StringComparison.InvariantCultureIgnoreCase))
        {
            throw new SecurityTokenException("Invalid Token");
        }
        AuthenticationDto authenticationDto = new AuthenticationDto
        {
            Email = principal.Claims.Where(c => c.Type == "Email").Select(c => c.Value).SingleOrDefault(),
            UserName = principal.Claims.Where(c => c.Type == "UserName").Select(c => c.Value).SingleOrDefault(),
            FirstName = principal.Claims.Where(c => c.Type == "FirstName").Select(c => c.Value).SingleOrDefault(),
            LastName = principal.Claims.Where(c => c.Type == "LastName").Select(c => c.Value).SingleOrDefault(),
            PhoneNumber = principal.Claims.Where(c => c.Type == "PhoneNumber").Select(c => c.Value).SingleOrDefault(),
            Id = principal.Claims.Where(c => c.Type == "Id").Select(c => c.Value).SingleOrDefault(),
            ExpiryDateTime = principal.Claims.Where(c => c.Type == "exp").Select(c => c.Value).SingleOrDefault(),
            Roles = principal.Claims.Where(c => c.Type == "Roles").Select(c => c.Value).ToList(),
        };
        return authenticationDto;
    }
}

这就是我的 Startup.cs 的样子：

services.AddAuthentication(options => {
    options.DefaultAuthenticateScheme = "Jwt";
    options.DefaultChallengeScheme = "Jwt";
})
.AddJwtBearer("Jwt", options =>
{
    options.TokenValidationParameters = new TokenValidationParameters
    {
        ValidateIssuerSigningKey = true,
        IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(Configuration["JwtAuthentication:SecurityKey"])),

        ValidateIssuer = true,
        ValidIssuer = Configuration["JwtAuthentication:Issuer"],

        ValidateAudience = true,
        ValidAudience = Configuration["JwtAuthentication:Audience"],

        ValidateLifetime = true, //validate the expiration and not before values in the token

        ClockSkew = TimeSpan.Zero //5 minute tolerance for the expiration date
    };
    options.Events = new JwtBearerEvents
    {
        OnAuthenticationFailed = context =>
        {
            if (context.Exception.GetType() == typeof(SecurityTokenExpiredException))
            {
                context.Response.Headers.Add("Token-Expired", "true");
            }
            return Task.CompletedTask;
        }
    };
});

我是不是配置有问题？

【问题讨论】：

标签： c# asp.net asp.net-core asp.net-core-mvc jwt

【解决方案1】：

您的错误似乎完全有道理。在ConfigureServices 中，您正在设置TokenValidationParameters，以便它验证您的发行人/受众，并且您正在为ValidIssuer 和ValidAudience 提供值，但您没有做同样的事情 em> 在您的 Decode 函数中，您只设置 ValidateIssuer 和 ValidateAudience 而不设置您期望的值。您需要在Decode 中的validations 变量上配置这些，如下所示：

var validations = new TokenValidationParameters
{
    ValidateIssuerSigningKey = true,
    IssuerSigningKey = key,
    ValidateIssuer = true,
    ValidateAudience = true,
    ValidateLifetime = false,
    // Add these...
    ValidIssuer = configuration["JwtAuthentication:Issuer"],
    ValidAudience = configuration["JwtAuthentication:Audience"]
};

【讨论】：