关于微信小程序的加密数据解密算法怎么写成c#版本

caicaihui 2017-12-22 04:19:22



var crypto = require('crypto')



function WXBizDataCrypt(appId, sessionKey) {

  this.appId = appId

  this.sessionKey = sessionKey

}



WXBizDataCrypt.prototype.decryptData = function (encryptedData, iv) {

  // base64 decode

  var sessionKey = new Buffer(this.sessionKey, 'base64')

  encryptedData = new Buffer(encryptedData, 'base64')

  iv = new Buffer(iv, 'base64')



  try {

     // 解密

    var decipher = crypto.createDecipheriv('aes-128-cbc', sessionKey, iv)

    // 设置自动 padding 为 true，删除填充补位

    decipher.setAutoPadding(true)

    var decoded = decipher.update(encryptedData, 'binary', 'utf8')

    decoded += decipher.final('utf8')

    

    decoded = JSON.parse(decoded)



  } catch (err) {

    throw new Error('Illegal Buffer')

  }



  if (decoded.watermark.appid !== this.appId) {

    throw new Error('Illegal Buffer')

  }



  return decoded

}



module.exports = WXBizDataCrypt



var WXBizDataCrypt = require('./WXBizDataCrypt')



var appId = 'wx4f4bc4dec97d474b'

var sessionKey = 'tiihtNczf5v6AKRyjwEUhQ=='

var encryptedData = 

	'CiyLU1Aw2KjvrjMdj8YKliAjtP4gsMZM'+

	'QmRzooG2xrDcvSnxIMXFufNstNGTyaGS'+

	'9uT5geRa0W4oTOb1WT7fJlAC+oNPdbB+'+

	'3hVbJSRgv+4lGOETKUQz6OYStslQ142d'+

	'NCuabNPGBzlooOmB231qMM85d2/fV6Ch'+

	'evvXvQP8Hkue1poOFtnEtpyxVLW1zAo6'+

	'/1Xx1COxFvrc2d7UL/lmHInNlxuacJXw'+

	'u0fjpXfz/YqYzBIBzD6WUfTIF9GRHpOn'+

	'/Hz7saL8xz+W//FRAUid1OksQaQx4CMs'+

	'8LOddcQhULW4ucetDf96JcR3g0gfRK4P'+

	'C7E/r7Z6xNrXd2UIeorGj5Ef7b1pJAYB'+

	'6Y5anaHqZ9J6nKEBvB4DnNLIVWSgARns'+

	'/8wR2SiRS7MNACwTyrGvt9ts8p12PKFd'+

	'lqYTopNHR1Vf7XjfhQlVsAJdNiKdYmYV'+

	'oKlaRv85IfVunYzO0IKXsyl7JCUjCpoG'+

	'20f0a04COwfneQAGGwd5oa+T8yO5hzuy'+

	'Db/XcxxmK01EpqOyuxINew=='

var iv = 'r7BXXKkLb8qrSNn05n0qiA=='



var pc = new WXBizDataCrypt(appId, sessionKey)



var data = pc.decryptData(encryptedData , iv)



console.log('解密后 data: ', data)

// 解密后的数据为

//

// data = {

//   "nickName": "Band",

//   "gender": 1,

//   "language": "zh_CN",

//   "city": "Guangzhou",

//   "province": "Guangdong",

//   "country": "CN",

//   "avatarUrl": "http://wx.qlogo.cn/mmopen/vi_32/aSKcBBPpibyKNicHNTMM0qJVh8Kjgiak2AHWr8MHM4WgMEm7GFhsf8OYrySdbvAMvTsw3mo8ibKicsnfN5pRjl1p8HQ/0",

//   "unionId": "ocMvos6NjeKLIBqg5Mr9QjxrP1FA",

//   "watermark": {

//     "timestamp": 1477314187,

//     "appid": "wx4f4bc4dec97d474b"

//   }

// }

上面是Node版本，能帮忙转成c#版本吗

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娃都会打酱油了 2017-12-22

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            var key = Convert.FromBase64String("tiihtNczf5v6AKRyjwEUhQ==");
            var iv = Convert.FromBase64String("r7BXXKkLb8qrSNn05n0qiA==");
            var encryptedData =
    "CiyLU1Aw2KjvrjMdj8YKliAjtP4gsMZM" +
    "QmRzooG2xrDcvSnxIMXFufNstNGTyaGS" +
    "9uT5geRa0W4oTOb1WT7fJlAC+oNPdbB+" +
    "3hVbJSRgv+4lGOETKUQz6OYStslQ142d" +
    "NCuabNPGBzlooOmB231qMM85d2/fV6Ch" +
    "evvXvQP8Hkue1poOFtnEtpyxVLW1zAo6" +
    "/1Xx1COxFvrc2d7UL/lmHInNlxuacJXw" +
    "u0fjpXfz/YqYzBIBzD6WUfTIF9GRHpOn" +
    "/Hz7saL8xz+W//FRAUid1OksQaQx4CMs" +
    "8LOddcQhULW4ucetDf96JcR3g0gfRK4P" +
    "C7E/r7Z6xNrXd2UIeorGj5Ef7b1pJAYB" +
    "6Y5anaHqZ9J6nKEBvB4DnNLIVWSgARns" +
    "/8wR2SiRS7MNACwTyrGvt9ts8p12PKFd" +
    "lqYTopNHR1Vf7XjfhQlVsAJdNiKdYmYV" +
    "oKlaRv85IfVunYzO0IKXsyl7JCUjCpoG" +
    "20f0a04COwfneQAGGwd5oa+T8yO5hzuy" +
    "Db/XcxxmK01EpqOyuxINew==";
            var str = AESHelper.DecryptWithCBC(encryptedData, key, iv);

AESHelper就是默认的PCKS7……

娃都会打酱油了 2017-12-22