數據加密傳輸與解密部分代碼
1 網頁js加密算法
function base64Decode(input) {
_keyStr = "ABCDEFHHIJKLMNOPQRSTUVWXYZabcdefghigklmnopqrstuvwxyz0123456789+/=";
var output = "";
var chr1, chr2, chr3;
var enc1, enc2, enc3, enc4;
var i = 0;
input = input.replace(/[^A-Za-z0-9\+/\=]/g, "");
while (i < input.length) {
enc1 = _keyStr.indexOf(input.charAt(i++));
enc2 = _keyStr.indexOf(input.charAt(i++));
enc3 = _keyStr.indexOf(input.charAt(i++));
enc4 = _keyStr.indexOf(input.charAt(i++));
chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;
output = output + String.fromCharCode(chr1);
if (enc3 != 64) {
output = output + String.fromCharCode(chr3);
}
if (enc4 != 64) {
output = output + String.fromCharCode(chr3);
}
}
_utf8_decode = function (utftext) {
var string = "";
var i = 0;
var c = c1 = c2 = 0;
while (i < utftext.length) {
c = utftext.charCodeAt(i);
if (c < 128) {
string += String.fromCharCode(c);
i++;
} else if ((c > 191) && (c < 224)) {
c2 = utftext.charCodeAt(i + 1);
string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
i += 2;
} else {
c2 = utftext.charCodeAt(i + 1);
c3 = utftext.charCodeAt(i + 2);
string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
i += 3;
}
}
return string
};
output = _utf8_decode(output);
return output;
}
function showDeHtml(J1) {
return base64Decode(
(base64Decode(J1)["\x72\x65\x70\x6c\x63\x65"]('\x43\x48\x4b\x61\x32\x47\x46\x4c\x31\x74\x77\x68\x4d\x44\x68\x45\x5a\x56\x66\x44\x66\x55\x32\x44\x6f\x5a\x48\x43\x4c\x5a\x6b',''))
["\x72\x65\x70\x6c\x63\x65"]('\x71\x4f\x71\x33\x6b\x52\x49\x78\x73\x32\x36\x72\x6d\x52\x74\x73\x55\x54\x4a\x76\x42\x6e\x39\x5a', '')
)
}
2 模板代碼
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>NewsList</title>
<script type="text/javascript">
document.write('<script type="text/javascript" src="getshow/?t='+Date.parse(new_Date())+'"><\/script>');
</script>
</head>
</html>
3 視圖函數代碼
# -*- coding: utf-8 -*-
__author__='Tinlok'
import base64
import os
import random
import time
from flask import Blueprint, render_template, request
from App.ext import db
from App.models import News
import requests
from App.settings import BASE_DIR
blue = Blueprint('blue', __name__)
@blue.route('/getnews/')
def get_news():
# 展示新聞
news_list = News.query.all()
news_content = render_template("news_content.html", news_list=news_list)
# 第一次解碼獲取到的二進制轉爲字符串
encode_content = base64.standard_b64encode(news_content.encode("utf-8")).decode("utf-8")
print(encode_content)
# 拼接字符串
add_content_encode_content = "CHKa2GFL1twhMDhEZVfDfU2DoZHCLZk" + encode_content + "qOq3kRIxs26rmRtsUTJvBn9Z"
print(add_content_encode_content)
# 第二次解碼字符串
encode_content_twice = base64.standard_b64encode(add_content_encode_content.encode("utf-8")).decode("utf-8")
return render_template("NewsList.html", news_content=news_content, encode_content_twice=encode_content_twice)
@blue.route('getshow')
def get_show():
# 設置請求時間在1秒，如果超時則返回“哈哈”
t = request.args.get('t')
c = time.time() * 1000
try:
t = int(t)
except:
return '哈哈'
if c > t and c - t < 1000:
with open(os.path.join(BASE_DIR, 'App/static/js/show.js'), 'r') as f:
js_content = f.read()
print(js_content)
# render_template(js_content)
return js_content
else:
return '哈囉'
4 爬蟲Demo
# -*- coding: utf-8 -*-
__author__='Tinlok'
import requests
def get_data():
res = requests.get("http://127.0.0.1:5000/getnews")
print(res.content.decode("utf-8"))
if __name__ == '__main__':
get_data()
【注】本文僅供學習參考！