PhonePe集成报错：Package Signature Mismatched，如何匹配应用包签名？

问题代码（Dart） #

void _initPhonePeSdk() {
    PhonePePaymentSdk.init('SANDBOX', merchantId, userId.isNotEmpty ? userId : "USERID", enableLogs)
        .then((isInitialized) => {
              setState(() {
                result = 'PhonePe SDK Initialized - $isInitialized';
              })
            })
        .catchError((error) {
          print('eeeeeeeeeeee: $error');
      _handleError(error);
      return <dynamic>{};
    });
  }

错误日志 #

I/phonepe_payment_sdk(29679): started init
I/InitHandler_PPE(29679): initializing SDK with mid = MERCHANTUAT, env = SANDBOX
I/ObjectFactory_PPE(29679): validating context provided to sdk
I/ObjectFactory_PPE(29679): context provided is valid
I/InitHandler_PPE(29679): SDK initialized, flow id = USERID
I/EventIng_PPE(29679): new event to save= {"eventData":{"sdkApiName":"INIT","manifestMerchantId":"MERCHANTUAT","manifestAppId":"","sdkEnvKey":"SANDBOX","flowId":"USERID","sessionId":"79dbebc15729444e93a325b10867a47d","sdkEventCounter":4},"eventTime":1748120829908,"eventName":"SDK_API_CALLED"}
I/PpeInternal_PPE(29679): syncing config
I/APIHelperV2_PPE(29679): starting sync sdk config api call
I/ConfigApi_PPE(29679): sdk config sync is required
I/EventIng_PPE(29679): new event to save= {"eventData":{"request":"establishBridge","flowId":"USERID","sessionId":"79dbebc15729444e93a325b10867a47d","sdkEventCounter":5},"eventTime":1748120829910,"eventName":"APP_COMM_STARTED"}
I/InitHandler_PPE(29679): not syncing events in init
I/SdkToApp_PPE(29679): sending response back: {"result":false,"failureReason":"PACKAGE_SIGNATURE_MISMATCHED"}
I/EventIng_PPE(29679): new event to save= {"eventData":{"result":"{\"result\":false,\"failureReason\":\"PACKAGE_SIGNATURE_MISMATCHED\"}","flowId":"USERID","sessionId":"79dbebc15729444e93a325b10867a47d","sdkEventCounter":6},"eventTime":1748120829918,"eventName":"APP_RESULT"}
I/ConfigApi_PPE(29679): get sdk config failed
I/EventIng_PPE(29679): new event to save= {"eventData":{"currentTimeStr":"Sun May 25 02:37:10 GMT+05:30 2025","error":"{\"message\":\"Bad Request - Api Mapping Not Found\"}","expiresAtStr":"Sun May 25 02:37:10 
GMT+05:30 2025","responseCode":400,"lastUpdateTimeStr":"Sun May 25 02:37:10 GMT+05:30 2025","flowId":"USERID","sessionId":"79dbebc15729444e93a325b10867a47d","sdkEventCounter":7},"eventTime":1748120830414,"eventName":"SDK_SYNC_CONFIG_FAILED"}

错误原因 #

PACKAGE_SIGNATURE_MISMATCHED错误是因为当前运行的应用签名哈希值，和PhonePe商家后台配置的签名不匹配。PhonePe SDK会验证签名来确保调用来源合法，不匹配就会拒绝初始化。

解决步骤：匹配应用包签名 #

1. 获取应用签名哈希值 #

针对Android平台，常用两种方法：

• 方法一：使用keytool命令
  调试环境（debug包）直接在终端执行：

  keytool -exportcert -alias androiddebugkey -keystore ~/.android/debug.keystore | openssl sha1 -binary | openssl base64
  

  输入密钥库密码（默认android）即可得到哈希值。正式环境替换对应的keystore路径和alias即可。

• 方法二：通过代码获取
  可以引入package_info_plus包，或者编写原生Android代码读取应用签名信息，再做SHA1和Base64编码得到哈希值。

2. 在PhonePe后台配置签名 #

登录PhonePe商家后台（SANDBOX对应测试后台），找到应用配置页面，把获取到的签名哈希值添加到允许列表中。注意要和当前使用的环境（SANDBOX/生产）对应，同时确保merchantId和初始化SDK时传入的一致。

3. 重新测试 #

配置完成后，重新打包运行应用，再次初始化PhonePe SDK即可。

内容的提问来源于stack exchange，提问作者Ash