src/solvers/Challenge7.scala


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package ixee.cryptopals.solvers

import scala.io.Source
import ixee.cryptopals.utils.ByteUtils._
import ixee.cryptopals.utils.ConversionUtils._
import ixee.cryptopals.utils.FunctionUtils._
import ixee.cryptopals.utils._
import io.github.marklister.base64.Base64._
import javax.crypto.Cipher
import javax.crypto.spec.SecretKeySpec

object Challenge7 {
  val path = "./data/7.txt"

  lazy val ciphertext =
    Source
      .fromFile(path)
      .getLines()
      .toSeq
      .flatten
      .mkString
      .toByteArray

  val key = new SecretKeySpec(
    "YELLOW SUBMARINE".asBytes.toArray,
    "AES"
  )

  def run = {
    val cipher = Cipher.getInstance(
      "AES/ECB/PKCS5Padding"
    )
    cipher.init(Cipher.DECRYPT_MODE, key)
    new String(cipher.doFinal(ciphertext))
  }
}