Update wallet project to work new AES changes

core/src/main/scala/org/bitcoins/core/crypto/MnemonicCode.scala

@@ -18,8 +18,10 @@ import scala.io.Source
   */
 sealed abstract class MnemonicCode {
   require(
-    MnemonicCode.VALID_LENGTHS.contains(words.length),
-    s"Number of words must be one of the following: ${MnemonicCode.VALID_LENGTHS.mkString(", ")} "
+    MnemonicCode.VALID_LENGTHS.contains(words.length), {
+      val validLengths = MnemonicCode.VALID_LENGTHS.mkString(", ")
+      s"Number of words must be one of the following: $validLengths, got: ${words.length} "
+    }
   )
 
   require({

db-commons/src/main/scala/org/bitcoins/db/DbCommonsColumnMappers.scala

@@ -159,11 +159,6 @@ abstract class DbCommonsColumnMappers {
     MappedColumnType
       .base[ScriptType, String](_.toString, ScriptType.fromStringExn)
 
-  implicit val aesSaltMapper: BaseColumnType[AesSalt] =
-    MappedColumnType.base[AesSalt, String](
-      _.value.toHex,
-      hex => AesSalt(ByteVector.fromValidHex(hex)))
-
 }
 
 object DbCommonsColumnMappers extends DbCommonsColumnMappers

wallet-test/src/test/scala/org/bitcoins/wallet/EncryptedMnemonicTest.scala

@@ -10,17 +10,14 @@ class EncryptedMnemonicTest extends BitcoinSUnitTest {
   behavior of "EncryptedMnemonic"
 
   it must "fail to decrypt with a bad password" in {
-    val password = AesPassword("good")
-    val badPassword = AesPassword("bad")
+    val password = AesPassword.fromNonEmptyString("good")
+    val badPassword = AesPassword.fromNonEmptyString("bad")
 
     def getMnemonic(): MnemonicCode =
       CryptoGenerators.mnemonicCode.sample.getOrElse(getMnemonic())
 
     val mnemonic = getMnemonic()
-    val encrypted = EncryptedMnemonicHelper.encrypt(mnemonic, password) match {
-      case Success(value)     => value
-      case Failure(exception) => fail(exception)
-    }
+    val encrypted = EncryptedMnemonicHelper.encrypt(mnemonic, password)
 
     val decrypted = encrypted.toMnemonic(badPassword)
 
@@ -31,10 +28,7 @@ class EncryptedMnemonicTest extends BitcoinSUnitTest {
   it must "have encryption/decryption symmetry" in {
     forAll(CryptoGenerators.mnemonicCode, CryptoGenerators.aesPassword) {
       (code, password) =>
-        val encrypted = EncryptedMnemonicHelper.encrypt(code, password) match {
-          case Success(e)         => e
-          case Failure(exception) => fail(exception)
-        }
+        val encrypted = EncryptedMnemonicHelper.encrypt(code, password)
         val decrypted = encrypted.toMnemonic(password) match {
           case Success(clear) => clear
           case Failure(exc)   => fail(exc)

wallet-test/src/test/scala/org/bitcoins/wallet/WalletUnitTest.scala

@@ -150,7 +150,7 @@ class WalletUnitTest extends BitcoinSWalletTest {
 
   it should "fail to unlock the wallet with a bad password" in {
     wallet: UnlockedWalletApi =>
-      val badpassphrase = AesPassword("bad")
+      val badpassphrase = AesPassword.fromNonEmptyString("bad")
       val locked = wallet.lock()
       wallet.unlock(badpassphrase) match {
         case MnemonicNotFound          => fail(MnemonicNotFound)

wallet/src/main/scala/org/bitcoins/wallet/EncryptedMnemonic.scala

@@ -2,40 +2,50 @@ package org.bitcoins.wallet
 
 import java.nio.charset.StandardCharsets
 
-import org.bitcoins.core.crypto.{
-  AesCrypt,
-  AesEncryptedData,
-  AesPassword,
-  MnemonicCode
-}
+import org.bitcoins.core.crypto.{AesCrypt, AesEncryptedData, MnemonicCode}
 import scodec.bits.ByteVector
 
 import scala.util.Try
+import org.bitcoins.core.crypto.AesSalt
+import org.bitcoins.core.crypto.AesPassword
+import org.bitcoins.core.util.BitcoinSLogger
+import scala.util.Success
+import scala.util.Failure
 
-case class EncryptedMnemonic(value: AesEncryptedData) {
+case class EncryptedMnemonic(value: AesEncryptedData, salt: AesSalt)
+    extends BitcoinSLogger {
   import org.bitcoins.core.util.EitherUtil.EitherOps._
 
-  def toMnemonic(passphrase: AesPassword): Try[MnemonicCode] = {
-    AesCrypt.decrypt(value, passphrase).toTry.map { decrypted =>
-      val wordsStr = new String(decrypted.toArray, StandardCharsets.UTF_8)
-      val wordsVec = wordsStr.split(" ").toVector
-      MnemonicCode.fromWords(wordsVec)
+  def toMnemonic(password: AesPassword): Try[MnemonicCode] = {
+    val key = password.toKey(salt)
+    AesCrypt.decrypt(value, key).toTry.flatMap { decrypted =>
+      decrypted.decodeUtf8 match {
+        case Left(_) =>
+          // when failing to decode this to a UTF-8 string
+          // we assume it's because of a bad password
+          Failure(ReadMnemonicError.DecryptionError)
+
+        case Right(wordsStr) =>
+          val wordsVec = wordsStr.split(" ").toVector
+          Success(MnemonicCode.fromWords(wordsVec))
+      }
     }
   }
 }
 
 object EncryptedMnemonicHelper {
-  import org.bitcoins.core.util.EitherUtil.EitherOps._
 
   def encrypt(
       mnemonicCode: MnemonicCode,
-      passphrase: AesPassword): Try[EncryptedMnemonic] = {
+      password: AesPassword): EncryptedMnemonic = {
     val wordsStr = mnemonicCode.words.mkString(" ")
     val Right(clearText) = ByteVector.encodeUtf8(wordsStr)
 
-    AesCrypt
-      .encrypt(clearText, passphrase)
-      .toTry
-      .map(EncryptedMnemonic(_))
+    val (key, salt) = password.toKey
+
+    val encryted = AesCrypt
+      .encrypt(clearText, key)
+
+    EncryptedMnemonic(encryted, salt)
   }
 }

wallet/src/main/scala/org/bitcoins/wallet/Wallet.scala

@@ -28,12 +28,7 @@ sealed abstract class Wallet
     */
   override def lock(): LockedWalletApi = {
     logger.debug(s"Locking wallet")
-    val encryptedT = EncryptedMnemonicHelper.encrypt(mnemonicCode, passphrase)
-    val encrypted = encryptedT match {
-      case Failure(exception) =>
-        throw new RuntimeException(s"Could not encrypt mnemonic: $exception")
-      case Success(value) => value
-    }
+    val encrypted = EncryptedMnemonicHelper.encrypt(mnemonicCode, passphrase)
 
     WalletStorage.writeMnemonicToDisk(encrypted)
     logger.debug("Locked wallet")
@@ -120,7 +115,7 @@ object Wallet extends CreateWalletApi with BitcoinSLogger {
     WalletImpl(mnemonicCode)
 
   // todo figure out how to handle password part of wallet
-  val badPassphrase = AesPassword("changeMe")
+  val badPassphrase = AesPassword.fromNonEmptyString("changeMe")
 
   // todo fix signature
   override def initializeWithEntropy(entropy: BitVector)(
@@ -143,22 +138,7 @@ object Wallet extends CreateWalletApi with BitcoinSLogger {
       }
 
     val encryptedMnemonicE: Either[InitializeWalletError, EncryptedMnemonic] =
-      mnemonicE.flatMap { mnemonic =>
-        val encryptedT = EncryptedMnemonicHelper
-          .encrypt(mnemonic, badPassphrase)
-
-        val encryptedE: Either[Throwable, EncryptedMnemonic] =
-          encryptedT match {
-            case Failure(exception) => Left(exception)
-            case Success(value)     => Right(value)
-          }
-
-        encryptedE.left
-          .map { err =>
-            logger.error(s"Encryption error when encrypting mnemonic: $err")
-            InitializeWalletError.EncryptionError(err)
-          }
-      }
+      mnemonicE.map { EncryptedMnemonicHelper.encrypt(_, badPassphrase) }
 
     val biasedFinalEither: Either[InitializeWalletError, Future[WalletImpl]] =
       for {

wallet/src/main/scala/org/bitcoins/wallet/WalletStorage.scala

@@ -14,6 +14,7 @@ import java.nio.file.Paths
 import java.nio.file.Path
 import scala.util.Try
 import org.bitcoins.wallet.config.WalletAppConfig
+import org.bitcoins.core.crypto.AesIV
 
 // what do we do if seed exists? error if they aren't equal?
 object WalletStorage extends BitcoinSLogger {
@@ -41,9 +42,9 @@ object WalletStorage extends BitcoinSLogger {
     val jsObject = {
       import MnemonicJsonKeys._
       ujson.Obj(
-        IV -> encrypted.iv.toHex,
+        IV -> encrypted.iv.hex,
         CIPHER_TEXT -> encrypted.cipherText.toHex,
-        SALT -> encrypted.salt.value.toHex
+        SALT -> mnemonic.salt.bytes.toHex
       )
     }
 
@@ -135,6 +136,7 @@ object WalletStorage extends BitcoinSLogger {
     val readJsonTupleEither: Either[
       ReadMnemonicError,
       (String, String, String)] = jsonE.flatMap { json =>
+      logger.trace(s"Read encrypted mnemonic JSON: $json")
       Try {
         val ivString = json(IV).str
         val cipherTextString = json(CIPHER_TEXT).str
@@ -153,13 +155,12 @@ object WalletStorage extends BitcoinSLogger {
       readJsonTupleEither.flatMap {
         case (rawIv, rawCipherText, rawSalt) =>
           val encryptedOpt = for {
-            iv <- ByteVector.fromHex(rawIv)
+            iv <- ByteVector.fromHex(rawIv).map(AesIV.fromValidBytes(_))
             cipherText <- ByteVector.fromHex(rawCipherText)
-            rawSalt <- ByteVector.fromHex(rawSalt)
-            salt = AesSalt(rawSalt)
+            salt <- ByteVector.fromHex(rawSalt).map(AesSalt(_))
           } yield {
             logger.debug(s"Parsed contents of $path into an EncryptedMnemonic")
-            EncryptedMnemonic(AesEncryptedData(cipherText, iv, salt))
+            EncryptedMnemonic(AesEncryptedData(cipherText, iv), salt)
           }
           encryptedOpt
             .map(Right(_))
@@ -208,7 +209,8 @@ sealed trait ReadMnemonicResult
 case class ReadMnemonicSuccess(mnemonic: MnemonicCode)
     extends ReadMnemonicResult
 
-sealed trait ReadMnemonicError extends ReadMnemonicResult
+sealed trait ReadMnemonicError extends ReadMnemonicResult { self: Error =>
+}
 
 object ReadMnemonicError {
 
@@ -216,14 +218,20 @@ object ReadMnemonicError {
     * Something went wrong while decrypting the mnemonic.
     * Most likely the passphrase was bad
     */
-  case object DecryptionError extends ReadMnemonicError
+  case object DecryptionError
+      extends Error(s"Could not decrypt mnemonic!")
+      with ReadMnemonicError
 
   /**
     * Something went wrong while parsing the encrypted
     * mnemonic into valid JSON
     */
-  case class JsonParsingError(message: String) extends ReadMnemonicError
+  case class JsonParsingError(message: String)
+      extends Error(s"Error when parsing JSON: $message")
+      with ReadMnemonicError
 
   /** The encrypted mnemonic was not found on disk */
-  case object NotFoundError extends ReadMnemonicError
+  case object NotFoundError
+      extends Error("Could not find mnemonic!")
+      with ReadMnemonicError
 }