initital commit

2021-09-15 09:58:01 +08:00
commit d46f96d263
90 changed files with 17509 additions and 0 deletions
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+var Crypto = require('./cryptojs/cryptojs.js').Crypto;
+var app = getApp();
+
+function RdWXBizDataCrypt(appId, sessionKey) {
+  this.appId = appId
+  this.sessionKey = sessionKey
+}
+RdWXBizDataCrypt.prototype.decryptData = function (encryptedData, iv) {
+  // base64 decode ：使用 CryptoJS 中 Crypto.util.base64ToBytes()进行 base64解码
+  var encryptedData = Crypto.util.base64ToBytes(encryptedData)
+  // console.log(sessionKey)
+  var key = Crypto.util.base64ToBytes(this.sessionKey);
+  var iv = Crypto.util.base64ToBytes(iv);
+  // console.log(encryptedData,key,iv)
+  // 对称解密使用的算法为 AES-128-CBC，数据采用PKCS#7填充
+  var mode = new Crypto.mode.CBC(Crypto.pad.pkcs7);
+  try {
+    // 解密
+    var bytes = Crypto.AES.decrypt(encryptedData, key, {
+      asBpytes: true,
+      iv: iv,
+      mode: mode
+    });
+    var decryptResult = JSON.parse(bytes);
+
+  } catch (err) {
+    console.log(err)
+  }
+  if (decryptResult.watermark.appid !== this.appId) {
+    console.log(err)
+  }
+  return decryptResult
+}
+module.exports = RdWXBizDataCrypt