Initialize encryption and JavaScript reverse-engineering study repository

Document the project structure and setup while excluding local dependencies and IDE settings.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

对称加密-2026-08-21/1. js环境实现des加解密.js

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+var crypro_js = require("crypto-js");
+
+
+var source_data = "你好，世界！"
+var des_key = "12345678"
+var iv = "12345678";
+
+
+var byte_iv = crypro_js.enc.Utf8.parse(iv);
+var key = crypro_js.enc.Utf8.parse(des_key);
+var data = crypro_js.enc.Utf8.parse(source_data);
+
+function des_ecb_encrypt() {
+    // 进行加密
+    /*
+    * 加密操作
+    *   des对称加密，需要三个形参
+    *   1. 明文字节
+    *   2. 密钥字节
+    *   3. 配置对象
+    *       (1) mode 工作模式 ECB, CBC, CFB, OFB, CTR
+    *       (2) padding 填充模式， Pkcs7，
+    *
+    **/
+    var encrypted = crypro_js.DES.encrypt(data, key, {
+        mode: crypro_js.mode.ECB, // 工作模式
+        padding: crypro_js.pad.Pkcs7 // 填充模式
+    })
+    return encrypted.toString();
+
+}
+
+function des_ecb_decrypt() {
+    var encrypt_data = des_ecb_encrypt();
+
+    var decrypted = crypro_js.DES.decrypt(encrypt_data, key, {
+        mode: crypro_js.mode.ECB, // 工作模式
+        padding: crypro_js.pad.Pkcs7 // 填充模式
+    })
+    return decrypted.toString(crypro_js.enc.Utf8);
+}
+
+
+// console.log(des_ecb_encrypt())
+// console.log(des_ecb_decrypt())
+
+function des_cbc_encrypt() {
+
+    var encrypted = crypro_js.DES.encrypt(data, key, {
+        iv: byte_iv,
+        mode: crypro_js.mode.CBC, // 工作模式
+        padding: crypro_js.pad.Pkcs7 // 填充模式
+    })
+    return encrypted.toString();
+
+}
+
+function des_cbc_decrypt() {
+    var encrypt_data = des_cbc_encrypt();
+
+    var decrypted = crypro_js.DES.decrypt(encrypt_data, key, {
+        iv: byte_iv,
+        mode: crypro_js.mode.CBC, // 工作模式
+        padding: crypro_js.pad.Pkcs7 // 填充模式
+    })
+    return decrypted.toString(crypro_js.enc.Utf8);
+}
+
+
+console.log(des_cbc_decrypt());

对称加密-2026-08-21/2. python实现des加解密.py

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+import base64
+from Crypto.Cipher import DES
+from Crypto.Util.Padding import pad, unpad
+
+
+def des_encrypt(plain_text):
+    cipher = DES.new(des_key, DES.MODE_CBC, iv)
+    encrypted = cipher.encrypt(pad(plain_text.encode("utf-8"), DES.block_size))
+    return base64.b64encode(encrypted)
+
+
+def des_decrypt(cipher_text):
+    cipher = DES.new(des_key, DES.MODE_CBC, iv)
+    decrypt_byte_data = base64.b64decode(cipher_text)
+    decrypted = unpad(cipher.decrypt(decrypt_byte_data), DES.block_size)
+    return decrypted.decode("utf-8")
+
+
+source_data = "你好，世界！"
+des_key = "12345678".encode("utf-8")
+iv = "12345678".encode("utf-8")
+if __name__ == "__main__":
+    enc_data = des_encrypt(source_data)
+    print(enc_data)
+    print(des_decrypt(des_encrypt(source_data)))

对称加密-2026-08-21/实战案例-自然科学/调用解密.py

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+import json
+import time
+
+import requests
+import execjs
+
+headers = {
+    "Accept": "application/json, text/plain, */*",
+    "Accept-Language": "zh-CN,zh;q=0.9",
+    "Authorization": "Bearer false",
+    "Connection": "keep-alive",
+    "Content-Type": "application/json;charset=UTF-8",
+    "Origin": "https://kd.nsfc.cn",
+    "Referer": "https://kd.nsfc.cn/finalSearchList?s=%E7%AC%AC%E4%B8%80%E6%80%A7%E5%8E%9F%E7%90%86%E8%AE%A1%E7%AE%97",
+    "Sec-Fetch-Dest": "empty",
+    "Sec-Fetch-Mode": "cors",
+    "Sec-Fetch-Site": "same-origin",
+    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.36",
+    "sec-ch-ua": "\"Chromium\";v=\"152\", \"Not?A_Brand\";v=\"24\", \"Google Chrome\";v=\"152\"",
+    "sec-ch-ua-mobile": "?0",
+    "sec-ch-ua-platform": "\"Windows\""
+}
+with open("js解密.js", "r", encoding="utf-8") as f:
+    js_code = f.read()
+
+
+ctx = execjs.compile(js_code)
+
+url = 'https://kd.nsfc.cn/api/baseQuery/completionQueryResultsData'
+for page in range(1, 11):
+    data = {
+        "complete": True,
+        "fuzzyKeyword": "第一性原理计算",
+        "isFuzzySearch": True,
+        "conclusionYear": "近五年",
+        "dependUnit": "",
+        "keywords": "",
+        "pageNum": page,
+        "pageSize": 10,
+        "projectType": "",
+        "projectTypeName": "",
+        "code": "",
+        "ratifyYear": "",
+        "order": "enddate",
+        "ordering": "desc",
+        "codeScreening": "",
+        "dependUnitScreening": "",
+        "keywordsScreening": "",
+        "projectTypeNameScreening": ""
+    }
+    response = requests.post(url, headers=headers, json=data)
+    result = ctx.call("g", response.text)
+    print(json.loads(result))
+    time.sleep(1)
+