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go-library/service/wechatminiprogram/user_phone.go

62 lines
1.6 KiB

package wechatminiprogram
import (
"crypto/aes"
"crypto/cipher"
"encoding/base64"
"encoding/json"
"errors"
)
// UserPhone 请求参数
type UserPhone struct {
SessionKey string `json:"session_key"`
EncryptedData string `json:"encrypted_data"`
Iv string `json:"iv"`
}
// UserPhoneResult 返回参数
type UserPhoneResult struct {
PhoneNumber string `json:"phoneNumber"` // 用户绑定的手机号(国外手机号会有区号)
PurePhoneNumber string `json:"purePhoneNumber"` // 没有区号的手机号
CountryCode string `json:"countryCode"` // 区号
Watermark struct {
AppID string `json:"appid"`
Timestamp int64 `json:"timestamp"`
} `json:"watermark"`
}
// UserPhone 解密手机号信息
func (app *App) UserPhone(param UserPhone) (result UserPhoneResult, err error) {
aesKey, err := base64.StdEncoding.DecodeString(param.SessionKey)
if err != nil {
return result, err
}
cipherText, err := base64.StdEncoding.DecodeString(param.EncryptedData)
if err != nil {
return result, err
}
ivBytes, err := base64.StdEncoding.DecodeString(param.Iv)
if err != nil {
return result, err
}
block, err := aes.NewCipher(aesKey)
if err != nil {
return result, err
}
mode := cipher.NewCBCDecrypter(block, ivBytes)
mode.CryptBlocks(cipherText, cipherText)
cipherText, err = app.pkcs7Unpaid(cipherText, block.BlockSize())
if err != nil {
return result, err
}
err = json.Unmarshal(cipherText, &result)
if err != nil {
return result, err
}
if result.Watermark.AppID != app.AppId {
return result, errors.New("app id not match")
}
return result, nil
}