Aes encryption with password (#65)

* naive implementation of aes encryption with password

* refactr AesCrypt to F

* made the `codec` cross-platform

core/build.sbt

@@ -1,8 +0,0 @@
-import SbtCommons._
-
-commons
-
-libraryDependencies ++= Seq(
-  scodecBits,
-  cats1
-)

core/src/main/scala/fluence/codec/Codec.scala

@@ -1,94 +0,0 @@
-/*
- * Copyright (C) 2017  Fluence Labs Limited
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-package fluence.codec
-
-import cats.data.Kleisli
-import cats.{ Applicative, ApplicativeError, FlatMap, Traverse }
-import cats.syntax.applicative._
-import scodec.bits.ByteVector
-
-import scala.language.{ higherKinds, implicitConversions }
-
-/**
- * Base trait for serialize/deserialize objects.
- *
- * @tparam A The type of plain object representation
- * @tparam B The type of binary representation
- * @tparam F Encoding/decoding effect
- */
-final case class Codec[F[_], A, B](encode: A ⇒ F[B], decode: B ⇒ F[A]) {
-  self ⇒
-
-  implicit val direct: Kleisli[F, A, B] = Kleisli(encode)
-
-  implicit val inverse: Kleisli[F, B, A] = Kleisli(decode)
-
-  def andThen[C](other: Codec[F, B, C])(implicit F: FlatMap[F]): Codec[F, A, C] =
-    Codec((self.direct andThen other.direct).run, (other.inverse andThen self.inverse).run)
-
-  def compose[C](other: Codec[F, C, A])(implicit F: FlatMap[F]): Codec[F, C, B] =
-    Codec((other.direct andThen self.direct).run, (self.inverse andThen other.inverse).run)
-
-  def swap: Codec[F, B, A] = Codec(decode, encode)
-}
-
-object Codec {
-  implicit def identityCodec[F[_] : Applicative, T]: Codec[F, T, T] =
-    Codec(_.pure[F], _.pure[F])
-
-  implicit def traverseCodec[F[_] : Applicative, G[_] : Traverse, O, B](implicit codec: Codec[F, O, B]): Codec[F, G[O], G[B]] =
-    Codec[F, G[O], G[B]](Traverse[G].traverse[F, O, B](_)(codec.encode), Traverse[G].traverse[F, B, O](_)(codec.decode))
-
-  implicit def toDirect[F[_], A, B](implicit cod: Codec[F, A, B]): Kleisli[F, A, B] =
-    cod.direct
-
-  implicit def toInverse[F[_], A, B](implicit cod: Codec[F, A, B]): Kleisli[F, B, A] =
-    cod.inverse
-
-  implicit def swap[F[_], A, B](implicit cod: Codec[F, A, B]): Codec[F, B, A] =
-    Codec[F, B, A](cod.decode, cod.encode)
-
-  implicit def byteVectorArray[F[_] : Applicative]: Codec[F, Array[Byte], ByteVector] =
-    pure(ByteVector.apply, _.toArray)
-
-  // TODO: descriptive error
-  implicit def byteVectorB64[F[_]](implicit F: ApplicativeError[F, Throwable]): Codec[F, String, ByteVector] =
-    Codec(
-      str ⇒
-        ByteVector.fromBase64(str).fold[F[ByteVector]](
-          F.raiseError(new IllegalArgumentException(s"Given string is not valid b64: $str"))
-        )(_.pure[F]),
-
-      _.toBase64.pure[F]
-    )
-
-  def codec[F[_], O, B](implicit codec: Codec[F, O, B]): Codec[F, O, B] = codec
-
-  /**
-   * Constructs a Codec from pure encode/decode functions and an Applicative
-   *
-   * @param encodeFn Encode function that never fail
-   * @param decodeFn Decode function that never fail
-   * @tparam F Applicative effect
-   * @tparam O Raw type
-   * @tparam B Encoded type
-   * @return New codec for O and B
-   */
-  def pure[F[_] : Applicative, O, B](encodeFn: O ⇒ B, decodeFn: B ⇒ O): Codec[F, O, B] =
-    Codec(encodeFn(_).pure[F], decodeFn(_).pure[F])
-}