Task: Add default and e2e encryption package module for cryptojs

README.md

@@ -1,14 +1,15 @@
-# TS Project (Template for TypeScript)
+# CUBETIQ CryptoJS
 
-[![Build Status](https://dci.osa.cubetiqs.com/api/badges/CUBETIQ/ts-project/status.svg)](https://dci.osa.cubetiqs.com/CUBETIQ/ts-project)
+-   Default Encryption
+-   E2E Encryption
 
-- TypeScript
+### Generate for Default Encryption
-- TS Node Dev
-- Husky
-- Prettier
-- ESLint
 
-...
+```js
+const key = crypto.randomBytes(32)
+const iv = crypto.randomBytes(16)
+```
 
 ### Contributors
+
 -   Sambo Chea <sombochea@cubetiqs.com>

package.json

@@ -1,7 +1,7 @@
 {
-    "name": "@cubetiq/ts-project",
+    "name": "@cubetiq/cryptojs",
     "version": "1.0.0",
-    "description": "TS project template",
+    "description": "A basic cryptojs for cubetiq application data encryption and protection.",
     "main": "dist/index.js",
     "scripts": {
         "start": "ts-node-dev --respawn --transpile-only src/index.ts",
@@ -12,11 +12,13 @@
     },
     "repository": {
         "type": "git",
-        "url": "https://git.cubetiqs.com/CUBETIQ/ts-project.git"
+        "url": "https://git.cubetiqs.com/CUBETIQ/cubetiq-cryptojs.git"
     },
     "keywords": [
         "TypeScript",
-        "Nodejs"
+        "Nodejs",
+        "Crypto",
+        "Encryption"
     ],
     "author": "Sambo Chea <sombochea@cubetiqs.com>",
     "license": "ISC",

src/config/index.ts

@@ -0,0 +1,3 @@
+export const DEFAULT_AES_ALGORITHM = "aes-256-cbc"
+export const DEFAULT_BUFFER_TYPE = "base64"
+export const DEFAULT_ENCODING_TYPE = "utf-8"

src/crypto/default-crypto.ts

@@ -0,0 +1,43 @@
+import * as crypto from "crypto"
+import {
+    DEFAULT_AES_ALGORITHM,
+    DEFAULT_BUFFER_TYPE,
+    DEFAULT_ENCODING_TYPE,
+} from "../config"
+import { stringToBuffer } from "../util"
+
+const encrypt = (
+    data: string,
+    key: string | Buffer,
+    iv?: string | Buffer | null
+): string => {
+    const cipher = crypto.createCipheriv(
+        DEFAULT_AES_ALGORITHM,
+        stringToBuffer(key),
+        stringToBuffer(iv || key)
+    )
+    let encrypted = cipher.update(
+        data,
+        DEFAULT_ENCODING_TYPE,
+        DEFAULT_BUFFER_TYPE
+    )
+    encrypted += cipher.final(DEFAULT_BUFFER_TYPE)
+    return encrypted
+}
+
+const decrypt = (data: string, key: Buffer, iv?: Buffer | null): string => {
+    const decipher = crypto.createDecipheriv(
+        DEFAULT_AES_ALGORITHM,
+        stringToBuffer(key),
+        stringToBuffer(iv || key)
+    )
+    let decrypted = decipher.update(
+        data,
+        DEFAULT_BUFFER_TYPE,
+        DEFAULT_ENCODING_TYPE
+    )
+    decrypted += decipher.final(DEFAULT_ENCODING_TYPE)
+    return decrypted
+}
+
+export { encrypt, decrypt }

src/crypto/e2e-crypto.ts

@@ -0,0 +1,30 @@
+import * as crypto from "crypto"
+
+import { DEFAULT_BUFFER_TYPE, DEFAULT_ENCODING_TYPE } from "../config"
+import { readFileString, stringToBuffer } from "../util"
+
+const encrypt = (data: string | Buffer, privOrPubKeyPath: string): string => {
+    const key = readFileString(privOrPubKeyPath)
+    const buffer = stringToBuffer(data)
+    const encrypted = crypto.publicEncrypt(key, buffer)
+    return encrypted.toString(DEFAULT_BUFFER_TYPE)
+}
+
+const decrypt = (
+    data: string | Buffer,
+    privateKeyPath: string,
+    passphrase?: string | null
+): string => {
+    const key = readFileString(privateKeyPath)
+    const buffer = stringToBuffer(data)
+    const decrypted = crypto.privateDecrypt(
+        {
+            key: key,
+            passphrase: passphrase || "",
+        },
+        buffer
+    )
+    return decrypted.toString(DEFAULT_ENCODING_TYPE)
+}
+
+export { encrypt, decrypt }

src/crypto/index.ts

@@ -0,0 +1,4 @@
+import { decrypt, encrypt } from "./default-crypto"
+import { encrypt as e2eEncrypt, decrypt as e2eDecrypt } from "./e2e-crypto"
+
+export { encrypt, decrypt, e2eEncrypt, e2eDecrypt }

src/index.ts

@@ -1 +1 @@
-console.log('Welcome to TS Project!');
+export {}

src/util/file.util.ts

@@ -0,0 +1,10 @@
+import * as fs from "fs"
+import * as path from "path"
+import { DEFAULT_ENCODING_TYPE } from "../config"
+
+export const readFileStringDefaultEncoding = (
+    relativeFilePath: string
+): string => {
+    const absolutePath = path.resolve(relativeFilePath)
+    return fs.readFileSync(absolutePath, DEFAULT_ENCODING_TYPE)
+}

src/util/index.ts

@@ -0,0 +1,12 @@
+import { DEFAULT_BUFFER_TYPE } from "../config"
+import { readFileStringDefaultEncoding } from "./file.util"
+
+const stringToBuffer = (data: string | Buffer): Buffer => {
+    if (data instanceof Buffer) {
+        return data
+    } else {
+        return Buffer.from(data, DEFAULT_BUFFER_TYPE)
+    }
+}
+
+export { readFileStringDefaultEncoding as readFileString, stringToBuffer }