Question

我可以通过设置validate-jwt属性，使用Azure API管理中的<issuer-signing-keys>策略成功验证使用HS256签名的JWT。但是如何验证使用RS256签名的JWT？我尝试将公钥或证书放在<issuer-signing-keys>中，但它不起作用。

Answer 1

目前验证rsa签名令牌的唯一方法是使用openid url。

Answer 2

我能够使用以下策略验证这样的令牌

<issuer-signing-keys>
    <key certificate-id="my-rsa-cert" />
</issuer-signing-keys>

您可以通过以下步骤做到这一点：

使用以下命令创建证书

openssl.exe req -x509 -nodes -sha256 -days 3650 -subj "/CN=Local" -newkey rsa:2048 -keyout Local.key -out Local.crt
openssl.exe pkcs12 -export -in Local.crt -inkey Local.key -CSP "Microsoft Enhanced RSA and AES Cryptographic Provider" -out Local.pfx
在 API 管理中加载证书“Local.pfx”，ID 为“my-rsa-cert”。

使用以下代码从证书生成令牌

 /////////////////////////////////////////////
 // Token Generation
 var CLIENT_ID = "Local";
 var ISSUER_GUID = "b0123cec-86bb-4eb2-8704-dcf7cb2cc279";

 var filePath = @"..\..\..\Cert\Local.pfx";
 var x509Certificate2 = new X509Certificate2(filePath, "<certpwd>");

 var signingCredentials = new X509SigningCredentials(x509Certificate2, SecurityAlgorithms.RsaSha256Signature); //, SecurityAlgorithms.Sha256Digest
 var tokenHandler = new JwtSecurityTokenHandler();

 var originalIssuer = $"{CLIENT_ID}";
 var issuer = originalIssuer;

 DateTime utcNow = DateTime.UtcNow;
DateTime expired = utcNow + TimeSpan.FromHours(1);

 var claims = new List<Claim> {
         new Claim("aud", "https://login.microsoftonline.com/{YOUR_TENENT_ID}/oauth2/token", ClaimValueTypes.String, issuer, originalIssuer),
         new Claim("exp", "1460534173", ClaimValueTypes.DateTime, issuer, originalIssuer),
         new Claim("jti", $"{ISSUER_GUID}", ClaimValueTypes.String, issuer, originalIssuer),
         new Claim("nbf", "1460533573", ClaimValueTypes.String, issuer, originalIssuer),
         new Claim("sub", $"{CLIENT_ID}", ClaimValueTypes.String, issuer, originalIssuer)
     };

 ClaimsIdentity subject = new ClaimsIdentity(claims: claims);

 var tokenDescriptor = new SecurityTokenDescriptor
 {
     Subject = subject,
     Issuer = issuer,
     Expires = expired,

     //TokenIssuerName = "self",
     //AppliesToAddress = "https://www.mywebsite.com",
     //Lifetime = new Lifetime(now, now.AddMinutes(60)),
     SigningCredentials = signingCredentials,
 };

 JwtSecurityToken jwtToken = tokenHandler.CreateToken(tokenDescriptor) as JwtSecurityToken;
 jwtToken.Header.Remove("typ");
 var token = tokenHandler.WriteToken(jwtToken);

 this.Output = jwtToken.ToString();
 this.Output += "\r\n" + token.ToString();


 JwtSecurityToken jwtToken = tokenHandler.CreateToken(tokenDescriptor) as JwtSecurityToken;
 jwtToken.Header.Remove("typ");
 var token = tokenHandler.WriteToken(jwtToken);

使用生成的不记名令牌向 API 发送请求

如何使用Azure API管理中的validate-jwt策略验证使用RS256算法签名的JWT

2 个答案: