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sidebar_position: 11 title: Sign Plugin keywords: [“sign”] description: sign plugin

Explanation

• Sign is a native plugin of soul Gateway and is used to process signature authentication of requests.

Plugin Setting

• In soul-admin -> plugin management --> sign set to enable.

Plugin Usage

• Introducing sign dependency in the pom.xml file of the gateway

  <!-- soul sign plugin start-->
  <dependency>
      <groupId>org.dromara</groupId>
      <artifactId>soul-spring-boot-starter-plugin-sign</artifactId>
     <version>${last.version}</version>
  </dependency>
  <!-- soul sign plugin end-->

• Selectors and rules, please refer to: selector.
• Only those matched requests can be authenticated by signature.

Add AK/SK

• In soul-admin --> In authentication management, click Add to add a new AK/SK。

Implementation of Gateway Technology

• Adopt Ak/SK authentication technical scheme.
• Adopt authentication plug-in and Chain of Responsibility Pattern to realize.
• Take effect when the authentication plugin is enabled and all interfaces are configured for authentication.

Authentication Guide

• Step 1: AK/SK is assigned by the gateway. For example, the AK assigned to you is: 1test123456781 SK is: ` 506eeb535cf740d7a755cb49f4a1536'

• Step 2: Decide the gateway path you want to access, such as ` /api/service/abc'

• Step 3: Construct parameters (the following are general parameters)

Field	Value	Description
timestamp	current timestamp(String)	The number of milliseconds of the current time（gateway will filter requests the before 5 minutes）
path	/api/service/abc	The path that you want to request(Modify by yourself according to your configuration of gateway)
version	1.0.0	1.0.0 is a fixed string value

Sort the above two field natually according to the key, then splice fields and fields, finally splice SK. The following is a code example.

Step 1: First, construct a Map.

   Map<String, String> map = Maps.newHashMapWithExpectedSize(2);
   //timestamp is string format of millisecond. String.valueOf(LocalDateTime.now().toInstant(ZoneOffset.of("+8")).toEpochMilli()) 
   map.put("timestamp","1571711067186");  // Value should be string format of milliseconds
   map.put("path", "/api/service/abc");
   map.put("version", "1.0.0");

Step 2: Sort the Keys naturally, then splice the key and values, and finally splice the SK assigned to you.

List<String> storedKeys = Arrays.stream(map.keySet()
                .toArray(new String[]{}))
                .sorted(Comparator.naturalOrder())
                .collect(Collectors.toList());
final String sign = storedKeys.stream()
                .map(key -> String.join("", key, params.get(key)))
                .collect(Collectors.joining()).trim()
                .concat("506EEB535CF740D7A755CB4B9F4A1536");

• The returned sign value should be:path/api/service/abctimestamp1571711067186version1.0.0506EEB535CF740D7A755CB4B9F4A1536

Step 3: Md5 encryption and then capitalization.

DigestUtils.md5DigestAsHex(sign.getBytes()).toUpperCase()

• The final returned value is:A021BF82BE342668B78CD9ADE593D683

Request GateWay

• If your visited path is:/api/service/abc。

• Address: http: domain name of gateway /api/service/abc.

• Set header，header Parameter：

Field	Value	Description
timestamp	1571711067186	Timestamp when signing
appKey	1TEST123456781	The AK value assigned to you
sign	A90E66763793BDBC817CF3B52AAAC041	The signature obtained above
version	1.0.0	1.0.0 is a fixed value.

• The signature plugin will filter requests after 5 minutes by default

• If the authentication fails, will return code 401, message may change.

"code":401,"message":"sign is not pass,Please check you sign algorithm!","data":null}

Extension

• Please refer to: dev-sign.