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微信支付退款结果通知golang AES-256-ECB解密

时间:2018-09-26 11:30 作者:QQ地带 我要评论

处理微信支付退款结果通知时,需要对返回数据进行AES-256-ECB解密,golang标准库未支持AES ECB加解密,特此记录。
 
一、解密方式
解密步骤如下
 
对加密串A做base64解码,得到加密串B
对商户key做md5,得到32位小写key* ( key设置路径:微信商户平台(pay.weixin.qq.com)–>账户设置–>API安全–>密钥设置 )
用key*对加密串B做AES-256-ECB解密
二、Golang 示例代码
package main
 
import (
"encoding/base64"
"fmt"
"strings"
"github.com/nanjishidu/gomini/gocrypto"
)
 
func main() {
var (
paykey   = "ziR0QKsTUfMOuochC9RfCdmfHECorQAP"
req_info = `YYwp8C48th0wnQzTqeI+41pflB26v+smFj9z6h9RPBgxTyZyxc+4YNEz7QEgZNWj/6rIb2MfyWMZmCc41CfjKSssoSZPXxOhUayb6KvNSZ1p6frOX1PDWzhyruXK7ouNND+gDsG4yZ0XXzsL4/pYNwLLba/71QrnkJ/BHcByk4EXnglju5DLup9pJQSnTxjomI9Rxu57m9jg5lLQFxMWXyeASZJNvof0ulnHlWJswS4OxKOkmW7VEyKyLGV6npoOm03Qsx2wkRxLsSa9gPpg4hdaReeUqh1FMbm7aWjyrVYT/MEZWg98p4GomEIYvz34XfDncTezX4bf/ZiSLXt79aE1/YTZrYfymXeCrGjlbe0rg/T2ezJHAC870u2vsVbY1/KcE2A443N+DEnAziXlBQ1AeWq3Rqk/O6/TMM0lomzgctAOiAMg+bh5+Gu1ubA9O3E+vehULydD5qx2o6i3+qA9ORbH415NyRrQdeFq5vmCiRikp5xYptWiGZA0tkoaLKMPQ4ndE5gWHqiBbGPfULZWokI+QjjhhBmwgbd6J0VqpRorwOuzC/BHdkP72DCdNcm7IDUpggnzBIy0+seWIkcHEryKjge3YDHpJeQCqrAH0CgxXHDt1xtbQbST1VqFyuhPhUjDXMXrknrGPN/oE1t0rLRq+78cI+k8xe5E6seeUXQsEe8r3358mpcDYSmXWSXVZxK6er9EF98APqHwcndyEJD2YyCh/mMVhERuX+7kjlRXSiNUWa/Cv/XAKFQuvUYA5ea2eYWtPRHa4DpyuF1SNsaqVKfgqKXZrJHfAgslVpSVqUpX4zkKszHF4kwMZO3M7J1P94Mxa7Tm9mTOJePOoHPXeEB+m9rX6pSfoi3mJDQ5inJ+Vc4gOkg/Wd/lqiy6TTyP/dHDN6/v+AuJx5AXBo/2NDD3fWhHjkqEKIuARr2ClZt9ZRQO4HkXdZo7CN06sGCHk48Tg8PmxnxKcMZm7Aoquv5yMIM2gWSWIRJhwJ8cUpafIHc+GesDlbF6Zbt+/KXkafJAQq2RklEN+WvZ/zFz113EPgWPjp16TwBoziq96MMekvWKY/vdhjol8VFtGH9F61Oy1Xwf6DJtPw==`
)
b, err := base64.StdEncoding.DecodeString(req_info)
if err != nil {
fmt.Println(b, err)
return
}
gocrypto.SetAesKey(strings.ToLower(gocrypto.Md5(paykey)))
plaintext, err := gocrypto.AesECBDecrypt(b)
if err != nil {
fmt.Println(err)
return
}
fmt.Println(string(plaintext))
}
三、Golang 第三方库
支持常见加解密
 
github.com/nanjishidu/gomini/gocrypto

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