客户端认证支持

客户端凭证

使用client_secret_basic

开箱即用支持使用 HTTP Basic 进行客户端认证，无需任何自定义即可启用该功能。 默认实现由 DefaultOAuth2TokenRequestHeadersConverter 提供。spring-doc.cadn.net.cn

给定以下用于 OAuth 2.0 客户端注册的 Spring Boot 属性：spring-doc.cadn.net.cn

spring:
  security:
    oauth2:
      client:
        registration:
          okta:
            client-id: client-id
            client-secret: client-secret
            client-authentication-method: client_secret_basic
            authorization-grant-type: authorization_code
            ...

以下示例展示了如何配置 WebClientReactiveAuthorizationCodeTokenResponseClient 以禁用客户端凭据的 URL 编码：spring-doc.cadn.net.cn

DefaultOAuth2TokenRequestHeadersConverter<OAuth2AuthorizationCodeGrantRequest> headersConverter =
		new DefaultOAuth2TokenRequestHeadersConverter<>();
headersConverter.setEncodeClientCredentials(false);

WebClientReactiveAuthorizationCodeTokenResponseClient tokenResponseClient =
		new WebClientReactiveAuthorizationCodeTokenResponseClient();
tokenResponseClient.setHeadersConverter(headersConverter);
val headersConverter = DefaultOAuth2TokenRequestHeadersConverter<OAuth2AuthorizationCodeGrantRequest>()
headersConverter.setEncodeClientCredentials(false)

val tokenResponseClient = WebClientReactiveAuthorizationCodeTokenResponseClient()
tokenResponseClient.setHeadersConverter(headersConverter)

使用client_secret_post

开箱即用支持在请求体中包含客户端凭据的客户端认证，无需任何自定义即可启用该功能。spring-doc.cadn.net.cn

以下用于 OAuth 2.0 客户端注册的 Spring Boot 属性展示了相关配置：spring-doc.cadn.net.cn

spring:
  security:
    oauth2:
      client:
        registration:
          okta:
            client-id: client-id
            client-secret: client-secret
            client-authentication-method: client_secret_post
            authorization-grant-type: authorization_code
            ...

JWT Bearer

有关JWT Bearer客户端认证的更多详细信息，请参阅《OAuth 2.0 客户端认证与授权许可的 JSON Web Token (JWT) 配置文件》。spring-doc.cadn.net.cn

JWT Bearer 客户端认证的默认实现是 NimbusJwtClientAuthenticationParametersConverter， 它是一个 Converter，通过在 client_assertion 参数中添加 一个已签名的 JSON Web Token（JWS）来定制Tokens请求参数。spring-doc.cadn.net.cn

用于对 JWS 进行签名的 java.security.PrivateKey 或 javax.crypto.SecretKey 由与 com.nimbusds.jose.jwk.JWK 关联的 NimbusJwtClientAuthenticationParametersConverter 解析器提供。spring-doc.cadn.net.cn

使用private_key_jwt

给定以下用于 OAuth 2.0 客户端注册的 Spring Boot 属性：spring-doc.cadn.net.cn

spring:
  security:
    oauth2:
      client:
        registration:
          okta:
            client-id: okta-client-id
            client-authentication-method: private_key_jwt
            authorization-grant-type: authorization_code
            ...

以下示例展示了如何配置 WebClientReactiveAuthorizationCodeTokenResponseClient：spring-doc.cadn.net.cn

Function<ClientRegistration, JWK> jwkResolver = (clientRegistration) -> {
	if (clientRegistration.getClientAuthenticationMethod().equals(ClientAuthenticationMethod.PRIVATE_KEY_JWT)) {
		// Assuming RSA key type
		RSAPublicKey publicKey = ...
		RSAPrivateKey privateKey = ...
		return new RSAKey.Builder(publicKey)
				.privateKey(privateKey)
				.keyID(UUID.randomUUID().toString())
				.build();
	}
	return null;
};

WebClientReactiveAuthorizationCodeTokenResponseClient tokenResponseClient =
		new WebClientReactiveAuthorizationCodeTokenResponseClient();
tokenResponseClient.addParametersConverter(
		new NimbusJwtClientAuthenticationParametersConverter<>(jwkResolver));
val jwkResolver: Function<ClientRegistration, JWK> =
    Function<ClientRegistration, JWK> { clientRegistration ->
        if (clientRegistration.clientAuthenticationMethod.equals(ClientAuthenticationMethod.PRIVATE_KEY_JWT)) {
            // Assuming RSA key type
            var publicKey: RSAPublicKey = ...
            var privateKey: RSAPrivateKey = ...
            RSAKey.Builder(publicKey)
                    .privateKey(privateKey)
                    .keyID(UUID.randomUUID().toString())
                .build()
        }
        null
    }

val tokenResponseClient = WebClientReactiveAuthorizationCodeTokenResponseClient()
tokenResponseClient.addParametersConverter(
    NimbusJwtClientAuthenticationParametersConverter(jwkResolver)
)

使用client_secret_jwt

给定以下用于 OAuth 2.0 客户端注册的 Spring Boot 属性：spring-doc.cadn.net.cn

spring:
  security:
    oauth2:
      client:
        registration:
          okta:
            client-id: okta-client-id
            client-secret: okta-client-secret
            client-authentication-method: client_secret_jwt
            authorization-grant-type: client_credentials
            ...

以下示例展示了如何配置 WebClientReactiveClientCredentialsTokenResponseClient：spring-doc.cadn.net.cn

Function<ClientRegistration, JWK> jwkResolver = (clientRegistration) -> {
	if (clientRegistration.getClientAuthenticationMethod().equals(ClientAuthenticationMethod.CLIENT_SECRET_JWT)) {
		SecretKeySpec secretKey = new SecretKeySpec(
				clientRegistration.getClientSecret().getBytes(StandardCharsets.UTF_8),
				"HmacSHA256");
		return new OctetSequenceKey.Builder(secretKey)
				.keyID(UUID.randomUUID().toString())
				.build();
	}
	return null;
};

WebClientReactiveClientCredentialsTokenResponseClient tokenResponseClient =
		new WebClientReactiveClientCredentialsTokenResponseClient();
tokenResponseClient.addParametersConverter(
		new NimbusJwtClientAuthenticationParametersConverter<>(jwkResolver));
val jwkResolver = Function<ClientRegistration, JWK?> { clientRegistration: ClientRegistration ->
    if (clientRegistration.clientAuthenticationMethod == ClientAuthenticationMethod.CLIENT_SECRET_JWT) {
        val secretKey = SecretKeySpec(
            clientRegistration.clientSecret.toByteArray(StandardCharsets.UTF_8),
            "HmacSHA256"
        )
        OctetSequenceKey.Builder(secretKey)
            .keyID(UUID.randomUUID().toString())
            .build()
    }
    null
}

val tokenResponseClient = WebClientReactiveClientCredentialsTokenResponseClient()
tokenResponseClient.addParametersConverter(
    NimbusJwtClientAuthenticationParametersConverter(jwkResolver)
)

自定义 JWT 断言

NimbusJwtClientAuthenticationParametersConverter 生成的 JWT 默认包含 iss、sub、aud、jti、iat 和 exp 声明。您可以通过向 setJwtClientAssertionCustomizer() 提供 Consumer<NimbusJwtClientAuthenticationParametersConverter.JwtClientAuthenticationContext<T>> 来自定义标头和/或声明。以下示例展示了如何自定义 JWT 的声明：spring-doc.cadn.net.cn

Function<ClientRegistration, JWK> jwkResolver = ...

NimbusJwtClientAuthenticationParametersConverter<OAuth2ClientCredentialsGrantRequest> converter =
		new NimbusJwtClientAuthenticationParametersConverter<>(jwkResolver);
converter.setJwtClientAssertionCustomizer((context) -> {
	context.getHeaders().header("custom-header", "header-value");
	context.getClaims().claim("custom-claim", "claim-value");
});
val jwkResolver = ...

val converter: NimbusJwtClientAuthenticationParametersConverter<OAuth2ClientCredentialsGrantRequest> =
    NimbusJwtClientAuthenticationParametersConverter(jwkResolver)
converter.setJwtClientAssertionCustomizer { context ->
    context.headers.header("custom-header", "header-value")
    context.claims.claim("custom-claim", "claim-value")
}

公共认证

开箱即用支持公共客户端认证，无需任何自定义即可启用。spring-doc.cadn.net.cn

以下用于 OAuth 2.0 客户端注册的 Spring Boot 属性展示了相关配置：spring-doc.cadn.net.cn

spring:
  security:
    oauth2:
      client:
        registration:
          okta:
            client-id: client-id
            client-authentication-method: none
            authorization-grant-type: authorization_code
            ...

通过代码交换证明密钥（PKCE）支持公共客户端。 当client-authentication-method设置为“none”（ClientAuthenticationMethod.NONE）时，将自动使用PKCE。spring-doc.cadn.net.cn