crypto.ts

/**
 * References:
 * - https://qiita.com/Ishidall/items/bb0e0db86a2f56fb1022
 */
import * as crypto from "crypto"

const ENCRYPT_METHOD = "aes-256-cbc" // 暗号化方式
const ENCRYPTION_KEY = "" // 32byte
const IV = Buffer.from("") // 16byte
const ENCODING = "hex" // 最終的な文字列のエンコード方式

/**
 * 暗号化
 * @param data 暗号化したいデータ
 */
export const encrypt = (data: any) => {
  const cipher = crypto.createCipheriv(ENCRYPT_METHOD, Buffer.from(ENCRYPTION_KEY), IV)
  const encrypted = cipher.update(data)
  const encryptedBuffer = Buffer.concat([encrypted, cipher.final()])
  return encryptedBuffer.toString(ENCODING)
}

/**
 * 複合する
 * @param encrypted 暗号化されたテキスト
 */
export const decrypt = (encrypted: string) => {
  const encryptedText = Buffer.from(encrypted, ENCODING)
  const decipher = crypto.createDecipheriv(ENCRYPT_METHOD, Buffer.from(ENCRYPTION_KEY), IV)
  const decrypted = decipher.update(encryptedText)
  const decryptedBuffer = Buffer.concat([decrypted, decipher.final()])
  return decryptedBuffer.toString()
}