c#微软图形-如何在没有登录和密码的情况下进行身份验证？

using System.IdentityModel.Tokens.Jwt;
using System.Security.Claims;
using Microsoft.IdentityModel.Tokens;

// 生成JWT令牌
var tokenHandler = new JwtSecurityTokenHandler();
var key = Encoding.ASCII.GetBytes("your-secret-key");
var tokenDescriptor = new SecurityTokenDescriptor
{
    Subject = new ClaimsIdentity(new Claim[]
    {
        new Claim(ClaimTypes.Name, "username"),
        // 可以添加其他自定义的身份信息
    }),
    Expires = DateTime.UtcNow.AddDays(7),
    SigningCredentials = new SigningCredentials(new SymmetricSecurityKey(key), SecurityAlgorithms.HmacSha256Signature)
};
var token = tokenHandler.CreateToken(tokenDescriptor);
var tokenString = tokenHandler.WriteToken(token);

// 验证JWT令牌
var tokenValidationParameters = new TokenValidationParameters
{
    ValidateIssuerSigningKey = true,
    IssuerSigningKey = new SymmetricSecurityKey(key),
    ValidateIssuer = false,
    ValidateAudience = false
};
var claimsPrincipal = tokenHandler.ValidateToken(tokenString, tokenValidationParameters, out var validatedToken);