RSA：jsencrypt/Python实现加密

简介：
RSA：jsencrypt/Python实现加密

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RSA公开密钥密码体制

一、浏览器中使用jsencrypt

<script src="https://cdn.bootcdn.net/ajax/libs/jsencrypt/3.1.0/jsencrypt.min.js"></script>

<script>
  // 公钥
  const publicKey =
    'MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDlOJu6TyygqxfWT7eLtGDwajtNFOb9I5XRb6khyfD1Yt3YiCgQWMNW649887VGJiGr/L5i2osbl8C9+WJTeucF+S76xFxdU6jE0NQ+Z+zEdhUTooNRaY5nZiu5PgDB0ED/ZKBUSLKL7eibMxZtMlUDHjm4gwQco1KRMDSmXSMkDwIDAQAB';

  var encrypt = new JSEncrypt();
  encrypt.setPublicKey(publicKey);
  var encrypted = encrypt.encrypt('hello');

  console.log(encrypted);
</script>

二、Node.js使用jsencrypt

安装

npm i jsencrypt

配合vue使用

参考：https://www.jb51.net/article/159904.htm

<template>

</template>

<script>
import JSEncrypt from 'jsencrypt';

export default {
  name: '',
  
  methods: {
    encryptData() {
      // 引入加密模块,对密码进行处理

      // 公钥
      const publicKey =
        'MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDlOJu6TyygqxfWT7eLtGDwajtNFOb9I5XRb6khyfD1Yt3YiCgQWMNW649887VGJiGr/L5i2osbl8C9+WJTeucF+S76xFxdU6jE0NQ+Z+zEdhUTooNRaY5nZiu5PgDB0ED/ZKBUSLKL7eibMxZtMlUDHjm4gwQco1KRMDSmXSMkDwIDAQAB';

      var encrypt = new JSEncrypt();
      encrypt.setPublicKey(publicKey);
      var encrypted = encrypt.encrypt('hello');

      console.log(encrypted);
    },
  },

  created() {
    this.encryptData();
  },
};
</script>

<style scoped>

</style>

三、Python实现1

# -*- coding: utf-8 -*-
import base64
from Crypto.Cipher import PKCS1_v1_5 as Cipher_pksc1_v1_5
from Crypto.PublicKey import RSA


def encrpt(password, public_key):
    public_key = '-----BEGIN PUBLIC KEY-----\n' + public_key + '\n-----END PUBLIC KEY-----'
    rsakey = RSA.importKey(public_key)
    cipher = Cipher_pksc1_v1_5.new(rsakey)
    cipher_text = base64.b64encode(cipher.encrypt(password.encode()))
    return cipher_text.decode()

# key需要修改成自己的
key = 'MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDlOJu6TyygqxfWT7eLtGDwajtNFOb9I5XRb6khyfD1Yt3YiCgQWMNW649887VGJiGr/L5i2osbl8C9+WJTeucF+S76xFxdU6jE0NQ+Z+zEdhUTooNRaY5nZiu5PgDB0ED/ZKBUSLKL7eibMxZtMlUDHjm4gwQco1KRMDSmXSMkDwIDAQAB'

password = encrpt('hello', key)
print(password)

四、Python实现2

参考：python 3 实现js中JSEncrypt encrypt方法，rsa模块根据字符串公钥生成加密字符串

# -*- coding: utf-8 -*-
# coding=utf-8
import base64
import rsa

__all__ = ['rsa_encrypt']


def _str2key(s):
    # 对字符串解码
    b_str = base64.b64decode(s)

    if len(b_str) < 162:
        return False

    hex_str = ''

    # 按位转换成16进制
    for x in b_str:
        h = hex(x)[2:]
        h = h.rjust(2, '0')
        hex_str += h

    # 找到模数和指数的开头结束位置
    m_start = 29 * 2
    e_start = 159 * 2
    m_len = 128 * 2
    e_len = 3 * 2

    modulus = hex_str[m_start:m_start + m_len]
    exponent = hex_str[e_start:e_start + e_len]

    return modulus, exponent


def rsa_encrypt(s, pubkey_str):
    '''
    rsa加密
    :param s:
    :param pubkey_str:公钥
    :return:
    '''
    key = _str2key(pubkey_str)
    modulus = int(key[0], 16)
    exponent = int(key[1], 16)
    pubkey = rsa.PublicKey(modulus, exponent)
    return base64.b64encode(rsa.encrypt(s.encode(), pubkey)).decode()


key = 'MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDlOJu6TyygqxfWT7eLtGDwajtNFOb9I5XRb6khyfD1Yt3YiCgQWMNW649887VGJiGr/L5i2osbl8C9+WJTeucF+S76xFxdU6jE0NQ+Z+zEdhUTooNRaY5nZiu5PgDB0ED/ZKBUSLKL7eibMxZtMlUDHjm4gwQco1KRMDSmXSMkDwIDAQAB'
password = rsa_encrypt('hello', key)
print(password)