dt_automate/tool/key.go

package tool

/*
@Author   : Uyynot
@Email    : uyynot@qq.com
@Time     : 2023/11/20 10:07
@File     : test.go
@Project  : test
@Desc     :
*/

import (
	"crypto/rand"
	"crypto/rsa"
	"crypto/sha1"
	"crypto/x509"
	"encoding/base64"
	"encoding/json"
	"encoding/pem"
	"errors"
	"log"
)

// 读取私钥文件，解析出私钥对象
func ReadParsePrivaterKey(filename string) (*rsa.PrivateKey, error) {
	// 1、读取私钥文件，获取私钥字节
	// privateKeyBytes, err := os.ReadFile(filename)
	privateKeyBytes := []byte(filename)
	// if err != nil {
	// 	return nil, err
	// }
	// 2、对私钥文件进行编码，生成加密块对象
	block, _ := pem.Decode([]byte(privateKeyBytes))
	if block == nil {
		return nil, errors.New("私钥信息错误！")
	}
	// 3、解析DER编码的私钥，生成私钥对象
	privateKey, err := x509.ParsePKCS1PrivateKey(block.Bytes)
	if err != nil {
		return nil, err
	}
	return privateKey, nil
}

func Keyprin(b64CipherTest string) Auth_s {
	pri_key, err := ReadParsePrivaterKey("-----BEGIN RSA PRIVATE KEY-----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\naNLqThTjLOvcEjq1MahY+dzmK46GtE2L2NiYm+CKNbEyqE55pq6mWrk=\n-----END RSA PRIVATE KEY-----")
	if err != nil {
		log.Println("err:", err)
	}
	//解码base64
	decodeBytes, err := base64.StdEncoding.DecodeString(b64CipherTest)
	if err != nil {
		log.Println(err)
	}
	// log.Println([]byte(decodeBytes))

	// 使用私钥解密密文
	decryptedPlainText, err := rsa.DecryptOAEP(sha1.New(), rand.Reader, pri_key, decodeBytes, nil)
	if err != nil {
		panic(err)
	}
	var auth Auth_s
	if err != json.Unmarshal(decryptedPlainText, &auth) {
		log.Println(err)
	}
	// log.Printf("Decrypted plain text: %v\n", auth.Initial_time)
	// log.Println(auth.Initial_time)
	// log.Println(auth.End_time)
	// log.Println(auth.Surplus_time)
	return auth
}

type Auth_s struct {
	SerialNumber string `json:"serialNumber"` //主板编号
	Username     string `json:"username"`     //用户名
	Initial_time string `json:"initial_time"` //初始时间
	End_time     string `json:"end_time"`     //结束时间
	Surplus_time string `json:"surplus_time"` //授权总时长/天
	Status       string `json:"status"`       //状态
}

// 解密
func KeyStr(b64CipherTest string) string {
	pri_key, err := ReadParsePrivaterKey("-----BEGIN RSA PRIVATE KEY-----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\naNLqThTjLOvcEjq1MahY+dzmK46GtE2L2NiYm+CKNbEyqE55pq6mWrk=\n-----END RSA PRIVATE KEY-----")
	if err != nil {
		log.Println("err:", err)
	}
	//解码base64
	decodeBytes, err := base64.StdEncoding.DecodeString(b64CipherTest)
	if err != nil {
		log.Println(err)
	}
	// log.Println([]byte(decodeBytes))

	// 使用私钥解密密文
	decryptedPlainText, err := rsa.DecryptOAEP(sha1.New(), rand.Reader, pri_key, decodeBytes, nil)
	if err != nil {
		panic(err)
	}
	return string(decryptedPlainText)
}