我正在尝试使用公钥/私钥,而不是与IdentityServer4的客户端机密共享密钥。此处记录了此方法。
如果是共享密钥,则请求将以纯文本形式包含secret
。
curl -X POST
http://<identityserver>/connect/token
-F client_id=abc
-F client_secret=secret
-F grant_type=client_credentials
-F scope=api1 api2
我的问题是:应该使用公钥/私钥身份验证方法作为secret
传递什么?
为了提供一些背景知识,使用公钥/密钥身份验证的客户端将通过以下步骤向IdentityServer注册
客户端生成一个
.crt
文件,例如// create key $ openssl genrsa -des3 -passout pass:x -out client.pass.key 2048 $ openssl rsa -passin pass:x -in client.pass.key -out client.key // create certificate request (csr) $ openssl req -new -key client.key -out client.csr // create certificate (crt) $ openssl x509 -req -sha256 -days 365 -in client.csr -signkey client.key -out client.crt // export pfx file from key and crt $ openssl pkcs12 -export -out client.pfx -inkey client.key -in client.crt
客户端将与身份服务器共享
client.crt
文件IdentityServer 将通过以下方式注册客户端
var client = new Client { ClientId = "abc", ClientSecrets = { new Secret { Type = IdentityServerConstants.SecretTypes.X509CertificateBase64, Value = "MIIDF...." <================= contents of the crt file } }, AllowedGrantTypes = GrantTypes.ClientCredentials, AllowedScopes = { "api1", "api2" } };
这要归功于 IdentityServer4 中的单元测试!
使用公共/专用身份验证时,不使用client_secret
。相反,使用client_assertion
,即 JWT 令牌。
下面是令牌请求的示例代码。 client.pfx
是从问题中的上述步骤生成的证书捆绑包。
var now = DateTime.UtcNow;
var clientId = "abc";
var tokenEndpoint = "http://localhost:5000/connect/token";
var cert = new X509Certificate2("client.pfx", "1234");
// create client_assertion JWT token
var token = new JwtSecurityToken(
clientId,
tokenEndpoint,
new List<Claim>
{
new Claim("jti", Guid.NewGuid().ToString()),
new Claim(JwtClaimTypes.Subject, clientId),
new Claim(JwtClaimTypes.IssuedAt, now.ToEpochTime().ToString(), ClaimValueTypes.Integer64)
},
now,
now.AddMinutes(1),
new SigningCredentials(
new X509SecurityKey(cert),
SecurityAlgorithms.RsaSha256
)
);
var tokenHandler = new JwtSecurityTokenHandler();
var tokenString = tokenHandler.WriteToken(token);
// token request - note there's no client_secret but a client_assertion which contains the token above
var requestBody = new FormUrlEncodedContent(new Dictionary<string, string>
{
{"client_id", clientId},
{"client_assertion_type", "urn:ietf:params:oauth:client-assertion-type:jwt-bearer"},
{"client_assertion", tokenString},
{"grant_type", "client_credentials"},
{"scope", "api1 api2"}
});
var client = new HttpClient();
var response = await client.PostAsync(tokenEndpoint, requestBody);
var tokenRespone = new TokenResponse(await response.Content.ReadAsStringAsync());
我认为它必须是有符号的 JWT。查看 IDS4 代码库中的 PrivateKeyJwtSecretValidator 类:
https://github.com/IdentityServer/IdentityServer4/blob/2.1.3/src/IdentityServer4/Validation/PrivateKeyJwtSecretValidator.cs