ed25519 for js (#8)

build.sbt

@@ -14,7 +14,7 @@ val scalaV = scalaVersion := "2.12.8"
 
 val commons = Seq(
   scalaV,
-  version                   := "0.0.6",
+  version                   := "0.0.7",
   fork in Test              := true,
   parallelExecution in Test := false,
   organization              := "one.fluence",
@@ -26,7 +26,7 @@ val commons = Seq(
   bintrayOrganization := Some("fluencelabs"),
   publishMavenStyle   := true,
   bintrayRepository   := "releases",
-  resolvers += Resolver.bintrayRepo("fluencelabs", "releases")
+  resolvers ++= Seq(Resolver.bintrayRepo("fluencelabs", "releases"), Resolver.sonatypeRepo("releases"))
 )
 
 commons
@@ -103,8 +103,10 @@ lazy val `crypto-hashsign` = crossProject(JVMPlatform, JSPlatform)
     )
   )
   .jsSettings(
+    libraryDependencies += "io.scalajs" %%% "nodejs" % "0.4.2",
     npmDependencies in Compile ++= Seq(
-      "elliptic" -> "6.4.1"
+      "elliptic" -> "6.4.1",
+      "supercop.js" -> "2.0.1"
     ),
     scalaJSModuleKind in Test := ModuleKind.CommonJSModule,
     //all JavaScript dependencies will be concatenated to a single file *-jsdeps.js

cipher/js/src/main/scala/fluence/crypto/aes/AesCrypt.scala

@@ -86,7 +86,7 @@ class AesCrypt(password: Array[Char], withIV: Boolean, config: AesConfig) {
       //IV also needs to be transformed in byte array
       val byteIv = iv.map(i ⇒ ByteVector.fromValidHex(i.toString))
       byteIv.map(_.toArray ++ crypted.toArray).getOrElse(crypted.toArray)
-    }("Cannot encrypt data.")
+    }("Cannot encrypt data")
   }
 
   private def decryptData[F[_]: Monad](key: Key, base64Data: String, iv: Option[String]) = {
@@ -95,7 +95,7 @@ class AesCrypt(password: Array[Char], withIV: Boolean, config: AesConfig) {
       val cryptOptions = CryptOptions(iv = iv.map(i ⇒ CryptoJS.enc.Hex.parse(i)), padding = pad, mode = mode)
       val dec = aes.decrypt(base64Data, key, cryptOptions)
       ByteVector.fromValidHex(dec.toString)
-    }("Cannot decrypt data.")
+    }("Cannot decrypt data")
   }
 
   /**
@@ -112,7 +112,7 @@ class AesCrypt(password: Array[Char], withIV: Boolean, config: AesConfig) {
       val (ivOp, data) = dataWithParams
       val base64 = ByteVector(data).toBase64
       (ivOp, base64)
-    }("Cannot detach data and IV.")
+    }("Cannot detach data and IV")
   }
 
   /**
@@ -123,7 +123,7 @@ class AesCrypt(password: Array[Char], withIV: Boolean, config: AesConfig) {
       // get raw key from password and salt
       val keyOption = KeyOptions(BITS, iterations = iterationCount, hasher = CryptoJS.algo.SHA256)
       CryptoJS.PBKDF2(new String(password), salt, keyOption)
-    }("Cannot init secret key.")
+    }("Cannot init secret key")
   }
 }
 

cipher/jvm/src/main/scala/fluence/crypto/aes/AesCrypt.scala

@@ -113,7 +113,7 @@ class AesCrypt(password: Array[Char], withIV: Boolean, config: AesConfig) extend
   ): EitherT[F, CryptoError, Array[Byte]] =
     nonFatalHandling {
       PBEParametersGenerator.PKCS5PasswordToUTF8Bytes(password)
-    }("Cannot init secret key.")
+    }("Cannot init secret key")
 
   /**
    * Setup AES CBC cipher
@@ -132,7 +132,7 @@ class AesCrypt(password: Array[Char], withIV: Boolean, config: AesConfig) extend
       cipher.init(encrypt, params)
 
       cipher
-    }("Cannot setup aes cipher.")
+    }("Cannot setup aes cipher")
   }
 
   private def cipherBytes[F[_]: Monad](
@@ -146,7 +146,7 @@ class AesCrypt(password: Array[Char], withIV: Boolean, config: AesConfig) extend
       val lastBlockLength = cipher.doFinal(buf, outputLength)
       //remove padding
       buf.slice(0, outputLength + lastBlockLength)
-    }("Error in cipher processing.")
+    }("Error in cipher processing")
   }
 
   /**
@@ -176,7 +176,7 @@ class AesCrypt(password: Array[Char], withIV: Boolean, config: AesConfig) extend
       val ivData = data.slice(0, ivSize)
       val encData = data.slice(ivSize, data.length)
       DetachedData(ivData, encData)
-    }("Cannot detach data and IV.")
+    }("Cannot detach data and IV")
   }
 
   private def paramsWithIV[F[_]: Monad](

core/src/main/scala/fluence/crypto/CryptoError.scala

@@ -20,6 +20,7 @@ package fluence.crypto
 import cats.Applicative
 import cats.data.EitherT
 
+import scala.language.higherKinds
 import scala.util.control.{NoStackTrace, NonFatal}
 
 case class CryptoError(message: String, causedBy: Option[Throwable] = None) extends NoStackTrace {

hashsign/js/src/main/scala/fluence/crypto/CryptoJsHelpers.scala

@@ -0,0 +1,29 @@
+/*
+ * 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.crypto
+
+import io.scalajs.nodejs.buffer.Buffer
+import scodec.bits.ByteVector
+
+import scala.language.higherKinds
+
+object CryptoJsHelpers {
+  implicit class ByteVectorOp(bv: ByteVector) {
+    def toJsBuffer: Buffer = Buffer.from(bv.toHex, "hex")
+  }
+}

hashsign/js/src/main/scala/fluence/crypto/ecdsa/Ecdsa.scala

@@ -37,38 +37,46 @@ import scala.scalajs.js.typedarray.Uint8Array
 class Ecdsa(ec: EC, hasher: Option[Crypto.Hasher[Array[Byte], Array[Byte]]]) {
   import CryptoError.nonFatalHandling
 
+  /**
+   * Restores key pair by secret key.
+   *
+   */
+  def restoreKeyPair[F[_]](secretKey: KeyPair.Secret)(implicit F: Monad[F]): EitherT[F, CryptoError, KeyPair] = {
+    for {
+      secret ← nonFatalHandling {
+        val key = ec.keyFromPrivate(secretKey.value.toHex, "hex")
+        val publicHex = key.getPublic(compact = true, "hex")
+        val secretHex = key.getPrivate("hex")
+        val public = ByteVector.fromValidHex(publicHex)
+        val secret = ByteVector.fromValidHex(secretHex)
+        KeyPair.fromByteVectors(public, secret)
+      }("Incorrect secret key format")
+    } yield secret
+  }
+
   val generateKeyPair: Crypto.KeyPairGenerator =
     new Crypto.Func[Option[Array[Byte]], KeyPair] {
       override def apply[F[_]](input: Option[Array[Byte]])(implicit F: Monad[F]): EitherT[F, CryptoError, KeyPair] =
         nonFatalHandling {
           val seedJs = input.map(bs ⇒ js.Dynamic.literal(entropy = bs.toJSArray))
           val key = ec.genKeyPair(seedJs)
-          val publicHex = key.getPublic(true, "hex")
+          val publicHex = key.getPublic(compact = true, "hex")
           val secretHex = key.getPrivate("hex")
           val public = ByteVector.fromValidHex(publicHex)
           val secret = ByteVector.fromValidHex(secretHex)
           KeyPair.fromByteVectors(public, secret)
-        }("Failed to generate key pair.")
+        }("Failed to generate key pair")
     }
 
   def sign[F[_]: Monad](keyPair: KeyPair, message: ByteVector): EitherT[F, CryptoError, Signature] =
     for {
       secret ← nonFatalHandling {
         ec.keyFromPrivate(keyPair.secretKey.value.toHex, "hex")
-      }("Cannot get private key from key pair.")
-      hash ← hash(message)
+      }("Cannot get private key from key pair")
+      hash ← JsCryptoHasher.hashJs(message, hasher)
       signHex ← nonFatalHandling(secret.sign(new Uint8Array(hash)).toDER("hex"))("Cannot sign message")
     } yield Signature(ByteVector.fromValidHex(signHex))
 
-  def hash[F[_]: Monad](message: ByteVector): EitherT[F, CryptoError, js.Array[Byte]] = {
-    val arr = message.toArray
-    hasher
-      .fold(EitherT.pure[F, CryptoError](arr)) { h ⇒
-        h[F](arr)
-      }
-      .map(_.toJSArray)
-  }
-
   def verify[F[_]: Monad](
     pubKey: KeyPair.Public,
     signature: Signature,
@@ -79,8 +87,8 @@ class Ecdsa(ec: EC, hasher: Option[Crypto.Hasher[Array[Byte], Array[Byte]]]) {
         val hex = pubKey.value.toHex
         ec.keyFromPublic(hex, "hex")
       }("Incorrect public key format.")
-      hash ← hash(message)
-      verify ← nonFatalHandling(public.verify(new Uint8Array(hash), signature.sign.toHex))("Cannot verify message.")
+      hash ← JsCryptoHasher.hashJs(message, hasher)
+      verify ← nonFatalHandling(public.verify(new Uint8Array(hash), signature.sign.toHex))("Cannot verify message")
       _ ← EitherT.cond[F](verify, (), CryptoError("Signature is not verified"))
     } yield ()
 }

hashsign/js/src/main/scala/fluence/crypto/ed25519/Ed25519.scala

@@ -0,0 +1,110 @@
+/*
+ * 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.crypto.ed25519
+
+import cats.Monad
+import cats.data.EitherT
+import fluence.crypto.CryptoError.nonFatalHandling
+import fluence.crypto.facade.ed25519.Supercop
+import fluence.crypto.hash.JsCryptoHasher
+import fluence.crypto.{Crypto, CryptoError, KeyPair, CryptoJsHelpers}
+import fluence.crypto.signature.{SignAlgo, Signature, SignatureChecker, Signer}
+import io.scalajs.nodejs.buffer.Buffer
+import scodec.bits.ByteVector
+
+import scala.language.higherKinds
+
+class Ed25519(hasher: Option[Crypto.Hasher[Array[Byte], Array[Byte]]]) {
+
+  import CryptoJsHelpers._
+
+  def sign[F[_]: Monad](keyPair: KeyPair, message: ByteVector): EitherT[F, CryptoError, Signature] =
+    for {
+      hash ← JsCryptoHasher.hash(message, hasher)
+      sign ← nonFatalHandling {
+        Supercop.sign(
+          Buffer.from(ByteVector(hash).toHex, "hex"),
+          keyPair.publicKey.value.toJsBuffer,
+          keyPair.secretKey.value.toJsBuffer
+        )
+      }("Error on signing message by js/ed25519 signature")
+    } yield Signature(ByteVector.fromValidHex(sign.toString("hex")))
+
+  def verify[F[_]: Monad](
+    pubKey: KeyPair.Public,
+    signature: Signature,
+    message: ByteVector
+  ): EitherT[F, CryptoError, Unit] =
+    for {
+      hash ← JsCryptoHasher.hash(message, hasher)
+      verify ← nonFatalHandling(
+        Supercop.verify(signature.sign.toJsBuffer, ByteVector(hash).toJsBuffer, pubKey.value.toJsBuffer)
+      )("Cannot verify message")
+      _ ← EitherT.cond[F](verify, (), CryptoError("Signature is not verified"))
+    } yield ()
+
+  val generateKeyPair: Crypto.KeyPairGenerator =
+    new Crypto.Func[Option[Array[Byte]], KeyPair] {
+      override def apply[F[_]](
+        input: Option[Array[Byte]]
+      )(implicit F: Monad[F]): EitherT[F, CryptoError, KeyPair] = {
+        for {
+          seed ← nonFatalHandling(input.map(ByteVector(_).toJsBuffer).getOrElse(Supercop.createSeed()))(
+            "Error on seed creation"
+          )
+          jsKeyPair ← nonFatalHandling(Supercop.createKeyPair(seed))("Error on key pair generation.")
+          keyPair ← nonFatalHandling(
+            KeyPair.fromByteVectors(
+              ByteVector.fromValidHex(jsKeyPair.publicKey.toString("hex")),
+              ByteVector.fromValidHex(jsKeyPair.secretKey.toString("hex"))
+            )
+          )("Error on decoding public and secret keys")
+        } yield keyPair
+      }
+    }
+}
+
+object Ed25519 {
+
+  val ed25519: Ed25519 = new Ed25519(Some(JsCryptoHasher.Sha256))
+
+  val signAlgo: SignAlgo = {
+    SignAlgo(
+      name = "ed25519",
+      generateKeyPair = ed25519.generateKeyPair,
+      signer = kp ⇒
+        Signer(
+          kp.publicKey,
+          new Crypto.Func[ByteVector, Signature] {
+            override def apply[F[_]](
+              input: ByteVector
+            )(implicit F: Monad[F]): EitherT[F, CryptoError, Signature] =
+              ed25519.sign(kp, input)
+          }
+      ),
+      checker = pk ⇒
+        new SignatureChecker {
+          override def check[F[_]: Monad](
+            signature: fluence.crypto.signature.Signature,
+            plain: ByteVector
+          ): EitherT[F, CryptoError, Unit] =
+            ed25519.verify(pk, signature, plain)
+      }
+    )
+  }
+}

hashsign/js/src/main/scala/fluence/crypto/facade/ed25519/Supercop.scala

@@ -0,0 +1,38 @@
+/*
+ * 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.crypto.facade.ed25519
+
+import io.scalajs.nodejs.buffer.Buffer
+
+import scala.scalajs.js
+import scala.scalajs.js.annotation.JSImport
+
+@js.native
+trait KeyPair extends js.Object {
+  val publicKey: Buffer
+  val secretKey: Buffer
+}
+
+@js.native
+@JSImport("supercop.js", JSImport.Namespace)
+object Supercop extends js.Object {
+  def verify(sig: Buffer, msg: Buffer, pubKey: Buffer): Boolean = js.native
+  def sign(msg: Buffer, pubKey: Buffer, privKey: Buffer): Buffer = js.native
+  def createKeyPair(seed: Buffer): KeyPair = js.native
+  def createSeed(): Buffer = js.native
+}

hashsign/js/src/main/scala/fluence/crypto/hash/JsCryptoHasher.scala

@@ -17,10 +17,14 @@
 
 package fluence.crypto.hash
 
+import cats.Monad
+import cats.data.EitherT
 import fluence.crypto.{Crypto, CryptoError}
 import fluence.crypto.facade.ecdsa.{SHA1, SHA256}
 import scodec.bits.ByteVector
 
+import scala.language.higherKinds
+import scala.scalajs.js
 import scala.scalajs.js.JSConverters._
 import scala.scalajs.js.typedarray.Uint8Array
 import scala.util.Try
@@ -44,4 +48,27 @@ object JsCryptoHasher {
         ByteVector.fromValidHex(sha1.digest("hex")).toArray
       }.toEither.left.map(err ⇒ CryptoError("Cannot calculate Sha256 hash", Some(err)))
     }
+
+  /**
+   * Calculates hash of message.
+   *
+   * @return hash in JS array
+   */
+  def hashJs[F[_]: Monad](message: ByteVector, hasher: Option[Crypto.Hasher[Array[Byte], Array[Byte]]]): EitherT[F, CryptoError, js.Array[Byte]] = {
+    hash(message, hasher)
+      .map(_.toJSArray)
+  }
+
+  /**
+   * Calculates hash of message.
+   *
+   * @return hash in Scala array
+   */
+  def hash[F[_]: Monad](message: ByteVector, hasher: Option[Crypto.Hasher[Array[Byte], Array[Byte]]]): EitherT[F, CryptoError, Array[Byte]] = {
+    val arr = message.toArray
+    hasher
+      .fold(EitherT.pure[F, CryptoError](arr)) { h ⇒
+        h[F](arr)
+      }
+  }
 }

hashsign/js/src/test/scala/fluence/crypto/Ed25519Spec.scala

@@ -0,0 +1,97 @@
+/*
+ * 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.crypto
+
+import cats.data.EitherT
+import fluence.crypto.signature.Signature
+import org.scalatest.{Matchers, WordSpec}
+import scodec.bits.ByteVector
+import cats.instances.try_._
+import fluence.crypto.ed25519.Ed25519
+
+import scala.util.{Random, Try}
+
+class Ed25519Spec extends WordSpec with Matchers {
+  def rndBytes(size: Int): Array[Byte] = Random.nextString(10).getBytes
+
+  def rndByteVector(size: Int) = ByteVector(rndBytes(size))
+
+  private implicit class TryEitherTExtractor[A <: Throwable, B](et: EitherT[Try, A, B]) {
+
+    def extract: B =
+      et.value.map {
+        case Left(e) ⇒ fail(e) // for making test fail message more describable
+        case Right(v) ⇒ v
+      }.get
+
+    def isOk: Boolean = et.value.fold(_ ⇒ false, _.isRight)
+  }
+
+  "ed25519 algorithm" should {
+    "correct sign and verify data" in {
+      val algorithm = Ed25519.ed25519
+
+      val keys = algorithm.generateKeyPair.unsafe(None)
+      val pubKey = keys.publicKey
+      val data = rndByteVector(10)
+      val sign = algorithm.sign[Try](keys, data).extract
+
+      algorithm.verify[Try](pubKey, sign, data).isOk shouldBe true
+
+      val randomData = rndByteVector(10)
+      val randomSign = algorithm.sign(keys, randomData).extract
+
+      algorithm.verify(pubKey, randomSign, data).isOk shouldBe false
+
+      algorithm.verify(pubKey, sign, randomData).isOk shouldBe false
+    }
+
+    "correctly work with signer and checker" in {
+      val algo = Ed25519.signAlgo
+      val keys = algo.generateKeyPair.unsafe(None)
+      val signer = algo.signer(keys)
+      val checker = algo.checker(keys.publicKey)
+
+      val data = rndByteVector(10)
+      val sign = signer.sign(data).extract
+
+      checker.check(sign, data).isOk shouldBe true
+
+      val randomSign = signer.sign(rndByteVector(10)).extract
+      checker.check(randomSign, data).isOk shouldBe false
+    }
+
+    "throw an errors on invalid data" in {
+      val algo = Ed25519.signAlgo
+      val keys = algo.generateKeyPair.unsafe(None)
+      val signer = algo.signer(keys)
+      val checker = algo.checker(keys.publicKey)
+      val data = rndByteVector(10)
+
+      val sign = signer.sign(data).extract
+
+      the[CryptoError] thrownBy checker.check(Signature(rndByteVector(10)), data).value.flatMap(_.toTry).get
+      val invalidChecker = algo.checker(KeyPair.fromByteVectors(rndByteVector(10), rndByteVector(10)).publicKey)
+      the[CryptoError] thrownBy invalidChecker
+        .check(sign, data)
+        .value
+        .flatMap(_.toTry)
+        .get
+    }
+  }
+}

hashsign/js/src/test/scala/fluence/crypto/EllipticSpec.scala

@@ -26,9 +26,9 @@ import scodec.bits.ByteVector
 
 import scala.util.{Random, Try}
 
-class EcdsaSpec extends WordSpec with Matchers {
+class EllipticSpec extends WordSpec with Matchers {
 
-  def rndBytes(size: Int) = Random.nextString(10).getBytes
+  def rndBytes(size: Int): Array[Byte] = Random.nextString(10).getBytes
 
   def rndByteVector(size: Int) = ByteVector(rndBytes(size))
 

hashsign/jvm/src/main/scala/fluence/crypto/ecdsa/Ecdsa.scala

@@ -142,36 +142,36 @@ class Ecdsa(curveType: String, scheme: String, hasher: Option[Crypto.Hasher[Arra
   ): EitherT[F, CryptoError, Unit] =
     for {
       ec ← curveSpec
-      keySpec ← nonFatalHandling(new ECPublicKeySpec(ec.getCurve.decodePoint(publicKey), ec))("Cannot read public key.")
+      keySpec ← nonFatalHandling(new ECPublicKeySpec(ec.getCurve.decodePoint(publicKey), ec))("Cannot read public key")
       keyFactory ← getKeyFactory
       signProvider ← getSignatureProvider
       verify ← nonFatalHandling {
         signProvider.initVerify(keyFactory.generatePublic(keySpec))
         signProvider.update(hasher.map(_.unsafe(message)).getOrElse(message))
         signProvider.verify(signature)
-      }("Cannot verify message.")
+      }("Cannot verify message")
 
       _ ← EitherT.cond[F](verify, (), CryptoError("Signature is not verified"))
     } yield ()
 
   private def curveSpec[F[_]: Monad] =
     nonFatalHandling(ECNamedCurveTable.getParameterSpec(curveType).asInstanceOf[ECParameterSpec])(
-      "Cannot get curve parameters."
+      "Cannot get curve parameters"
     )
 
   private def getKeyPairGenerator[F[_]: Monad] =
     nonFatalHandling(KeyPairGenerator.getInstance(ECDSA, BouncyCastleProvider.PROVIDER_NAME))(
-      "Cannot get key pair generator."
+      "Cannot get key pair generator"
     )
 
   private def getKeyFactory[F[_]: Monad] =
     nonFatalHandling(KeyFactory.getInstance(ECDSA, BouncyCastleProvider.PROVIDER_NAME))(
-      "Cannot get key factory instance."
+      "Cannot get key factory instance"
     )
 
   private def getSignatureProvider[F[_]: Monad] =
     nonFatalHandling(Signature.getInstance(scheme, BouncyCastleProvider.PROVIDER_NAME))(
-      "Cannot get signature instance."
+      "Cannot get signature instance"
     )
 }
 

hashsign/jvm/src/main/scala/fluence/crypto/eddsa/Ed25519.scala

@@ -137,13 +137,21 @@ object Ed25519 {
   /**
    * Keys in tendermint are generating with a random seed of 32 bytes
    */
-  val tendermintEd25519 = new Ed25519(256)
-  val tendermintAlgo: SignAlgo = signAlgo(256)
+  val ed25519 = new Ed25519(256)
+  val signAlgo: SignAlgo = signAlgoInit(256)
 
-  def ed25519(strength: Int) = new Ed25519(strength)
+  /**
+   *
+   * @param strength the size, in bits, of the keys we want to produce
+   */
+  def ed25519Init(strength: Int) = new Ed25519(strength)
 
-  def signAlgo(strength: Int): SignAlgo = {
-    val algo = ed25519(strength)
+  /**
+   *
+   * @param strength the size, in bits, of the keys we want to produce
+   */
+  def signAlgoInit(strength: Int): SignAlgo = {
+    val algo = ed25519Init(strength)
     SignAlgo(
       name = "ed25519",
       generateKeyPair = algo.generateKeyPair,

hashsign/jvm/src/test/scala/fluence/crypto/Ed25519Spec.scala

@@ -48,7 +48,7 @@ class Ed25519Spec extends WordSpec with Matchers {
 
   "ed25519 algorithm" should {
     "correct sign and verify data" in {
-      val algorithm = Ed25519.ed25519(32)
+      val algorithm = Ed25519.ed25519Init(32)
 
       val keys = algorithm.generateKeyPair.unsafe(None)
       val pubKey = keys.publicKey
@@ -66,7 +66,7 @@ class Ed25519Spec extends WordSpec with Matchers {
     }
 
     "correctly work with signer and checker" in {
-      val algo = Ed25519.signAlgo(32)
+      val algo = Ed25519.signAlgo
       val keys = algo.generateKeyPair.unsafe(None)
       val signer = algo.signer(keys)
       val checker = algo.checker(keys.publicKey)
@@ -81,7 +81,7 @@ class Ed25519Spec extends WordSpec with Matchers {
     }
 
     "throw an errors on invalid data" in {
-      val algo = Ed25519.signAlgo(32)
+      val algo = Ed25519.signAlgo
       val keys = algo.generateKeyPair.unsafe(None)
       val signer = algo.signer(keys)
       val checker = algo.checker(keys.publicKey)
@@ -103,7 +103,7 @@ class Ed25519Spec extends WordSpec with Matchers {
     }
 
     "store and read key from file" in {
-      val algo = Ed25519.signAlgo(32)
+      val algo = Ed25519.signAlgo
       val keys = algo.generateKeyPair.unsafe(None)
 
       val keyFile = File.createTempFile("test", "")
@@ -127,10 +127,10 @@ class Ed25519Spec extends WordSpec with Matchers {
     }
 
     "restore key pair from secret key" in {
-      val algo = Ed25519.signAlgo(32)
+      val algo = Ed25519.signAlgo
       val testKeys = algo.generateKeyPair.unsafe(None)
 
-      val ed25519 = Ed25519.ed25519(32)
+      val ed25519 = Ed25519.ed25519
 
       val newKeys = ed25519.restorePairFromSecret(testKeys.secretKey).extract
 
@@ -158,7 +158,7 @@ class Ed25519Spec extends WordSpec with Matchers {
       val privKey = ByteVector.fromBase64Descriptive(privKeyBase64).right.get
       val pubKey = ByteVector.fromBase64Descriptive(pubKeyBase64).right.get
 
-      val restored = Ed25519.tendermintEd25519
+      val restored = Ed25519.ed25519
         .restorePairFromSecret[Try](KeyPair.Secret(privKey.dropRight(32)))
         .value
         .get

project/FluenceCrossType.scala

@@ -26,4 +26,3 @@ object FluenceCrossType extends sbtcrossproject.CrossType {
   override def sharedSrcDir(projectBase: File, conf: String) =
     Some(shared(projectBase, conf))
 }
-

project/plugins.sbt

@@ -4,7 +4,7 @@ addSbtPlugin("com.typesafe.sbt" % "sbt-native-packager" % "1.3.20")
 
 addSbtPlugin("de.heikoseeberger" % "sbt-header" % "5.2.0")
 
-addSbtPlugin("org.scala-js"       % "sbt-scalajs"              % "0.6.27")
+addSbtPlugin("org.scala-js"       % "sbt-scalajs"              % "0.6.28")
 addSbtPlugin("org.portable-scala" % "sbt-crossproject"         % "0.6.0")
 addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "0.6.0")