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hillcipher_rabinp

v1.0.3

Published

hybridcryptosystem

Downloads

4

Readme

PENGAMANAN DATABASE FIELD-LEVEL ENCRYPTION MENGGUNAKAN HYBRID CRYPTOSYSTEM ALGORITMA HILL CIPHER DAN ALGORITMA RABIN P

Sastra Harapan Gulo

201401066

PROGRAM STUDI S1 ILMU KOMPUTER

FAKULTAS ILMU KOMPUTER DAN TEKNOLOGI INFORMASI

UNIVERSITAS SUMATERA UTARA

MEDAN

2024

Penggunaan Library

Install Library

Untuk penggunaan library dalam pengamanan database, lakukan penginstalan library pada proyek node.js anda dengan menggunakan

npm intasll hillcipher_rabinp

Import Fungsi

Setelah instalasi library, anda haru memanggil fungsi yang tersedia dalam library terlebih dahulu yakni {encrypt, decrypt}.

fungsi encrypt digunakan untuk enkripsi data agar sulit dimengerti sbelum disimpan ke databse, fungsi decrypt digunakan untuk dekripsi data dari database agar kembali kebentuk semua.

const { encrypt, decrypt } = require("hillcipher_rabinp");

Kunci Algoritma Rabin P

Siapkanlah kunci privat (p dan q) algoritma Rabin P dengan syarat p,q adalah bil. prima dan p ≠ q → p ≡ q ≡ 3 mod 4.

Kunci dapat disimpan dalam file enviromen variabel .env untuk keamanan

Contoh Data

{
    "soal": "Kunci enkripsi yang sama dengan proses dekripsi disebut?",
    "pilihana": "password",
    "pilihanb": "simetri",
    "pilihanc": "asimetri",
    "jawaban": "b"
}

Creta Data

Berikut adalah contoh penggunaan fungsi encrypt untuk membuat data baru dalam database

create(req, res) {
    data = {
      soal: req.body.soal,
      pilihana: req.body.pilihana,
      pilihanb: req.body.pilihanb,
      pilihanc: req.body.pilihanc,
      jawaban: req.body.jawaban,
    };
    encrypData = encryp(data, 925789379n, 904318643n);
    console.log(encrypData);

    Soal.create(encrypData)
      .then((post) => {
        res.status(201).json({
          status: "OK",
          data: post,
        });
      })
      .catch((err) => {
        res.status(201).json({
          status: "FAIL",
          message: err.message,
        });
      });
  },

List Data

Berikut adalah contoh penggunaan fungsi decrypt untuk menampilkan data dari database

list(req, res) {
    SoalBaru.findAll()
      .then((soal) => {
        soal.forEach((soals) => {
          data = {
            soal: soals.soal,
            pilihana: soals.pilihana,
            pilihanb: soals.pilihanb,
            pilihanc: soals.pilihanc,
            jawaban: soals.jawaban,
            key: soals.key,
          };

          dataDecrypt = decrypt(data, KEY_RABINP_P, KEY_RABINP_Q);

          Object.assign(soals, dataDecrypt);
        });
        res.status(200).json({
          status: "OK",
          data: {
            soal,
          },
        });
      })
      .catch((err) => {
        res.status(400).json({
          status: "FAIL",
          message: err.message,
        });
      });
  },

Update Kunci Rabin P

Berikut adalah contoh untuk memperbaharui kunci Rabin P yang digunakan

rabinPKeyUpdate(req, res) {
    Soal.findAll()
      .then((soal) => {
        soal.forEach((soals) => {
          data = {
            soal: soals.soal,
            pilihana: soals.pilihana,
            pilihanb: soals.pilihanb,
            pilihanc: soals.pilihanc,
            jawaban: soals.jawaban,
            key: soals.key,
          };

          dataDecrypt = decrypt(data, KEY_RABINP_P, KEY_RABINP_Q);
          delete dataDecrypt.key;
          dataEncrypt = encryp(dataDecrypt, KEY_RABINP_P_NEW, KEY_RABINP_Q_NEW);
          Object.assign(data, dataEncrypt);
          data.id = soals.id;
          console.log(data);
          SoalBaru.create(data)
            .then((post) => {
              soals = data;
            })
            .catch((err) => {
              res.status(201).json({
                status: "FAIL",
                message: err.message,
              });
            });
        });
        res.status(201).json({
          status: "OK",
          data: soal,
        });
      })
      .catch((err) => {
        res.status(400).json({
          status: "FAIL",
          message: err.message,
        });
      });
  },